/* ================================================================
   TechWithDB — Light Theme Stylesheet
   Inspired by terraform-aws-light.html design language
   Clean whites · Purple/Blue/Orange accents · Inter + Fira Code
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Fira+Code:wght@400;500&display=swap');

:root {
  /* Core surfaces */
  --bg:          #f8fafc;
  --surface:     #ffffff;
  --surface-2:   #f1f5f9;
  --border:      #e2e8f0;
  --border-2:    #cbd5e1;

  /* Text scale */
  --text:        #1e293b;
  --text-2:      #475569;
  --text-3:      #64748b;
  --text-4:      #94a3b8;

  /* Brand colors */
  --purple:      #6d28d9;
  --purple-lt:   #7c3aed;
  --purple-bg:   #ede9fe;
  --purple-muted:#ddd6fe;

  /* AWS orange */
  --aws:         #d97706;
  --aws-bg:      #fffbeb;
  --aws-border:  #fde68a;
  --aws-dk:      #b45309;

  /* DevOps / accents */
  --blue:        #2563eb;
  --blue-bg:     #eff6ff;
  --blue-border: #bfdbfe;

  --cyan:        #0891b2;
  --cyan-bg:     #ecfeff;
  --cyan-border: #a5f3fc;

  --green:       #16a34a;
  --green-bg:    #f0fdf4;
  --green-border:#bbf7d0;

  --red:         #dc2626;
  --red-bg:      #fef2f2;
  --red-border:  #fca5a5;

  --yellow:      #ca8a04;
  --yellow-bg:   #fefce8;
  --yellow-border:#fde047;

  /* Code */
  --code-bg:     #f1f5f9;
  --code-surface:#f8faff;

  /* Layout */
  --nav-h:       60px;
  --page-max:    1100px;
  --r:           8px;
  --r-lg:        12px;
  --r-pill:      999px;

  /* Effects */
  --ease:        cubic-bezier(.4,0,.2,1);
  --t:           all .15s var(--ease);
  --sh-card:     0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --sh-hover:    0 4px 16px rgba(0,0,0,.1);
  --sh-purple:   0 4px 14px rgba(109,40,217,.25);

  /* Alias for template compatibility */
  --cyan-soft:   var(--cyan-bg);
  --navy:        #1e293b;
  --muted:       var(--text-3);
  --bg-card:     var(--surface);
  --ink-2:       var(--text-2);
  --ink-3:       var(--text-3);
  --ink-4:       var(--text-4);
  --font-display:'Inter', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 20px);
}
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  max-width: 100vw;
}
img  { max-width: 100%; height: auto; display: block; }
a    { color: var(--purple); text-decoration: none; transition: var(--t); }
a:hover { color: var(--purple-lt); }
strong { font-weight: 700; color: var(--text); }
code, pre { font-family: 'Fira Code', monospace; }

/* ── Utilities ─────────────────────────────────────────────── */
.container, .wrap { max-width: var(--page-max); margin: 0 auto; padding: 0 28px; overflow-x: clip; }

.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 22px; border-radius: var(--r);
  font-family: 'Inter', sans-serif; font-weight: 600; font-size: .88rem;
  cursor: pointer; text-decoration: none; transition: var(--t); border: none; line-height: 1;
}
.btn-primary  {
  background: linear-gradient(135deg, var(--purple) 0%, var(--blue) 100%);
  color: #fff; box-shadow: var(--sh-purple);
}
.btn-primary:hover { color: #fff; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(109,40,217,.35); }
.btn-outline  { border: 1.5px solid var(--border-2); color: var(--text-2); background: var(--surface); }
.btn-outline:hover { border-color: var(--purple); color: var(--purple); background: var(--purple-bg); }
.btn-ghost    { background: var(--surface-2); color: var(--text-2); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--purple-bg); color: var(--purple); }
.btn-sm { padding: 6px 14px; font-size: .8rem; }

/* Badge pills */
.badge, .tag-pill {
  display: inline-block; padding: 2px 10px;
  border-radius: var(--r-pill); font-size: .72rem; font-weight: 700;
  background: var(--surface-2); color: var(--text-3); border: 1px solid var(--border);
}
.badge-aws      { background: var(--aws-bg);    color: var(--aws-dk);   border-color: var(--aws-border); }
.badge-devops   { background: var(--blue-bg);   color: var(--blue);     border-color: var(--blue-border); }
.badge-blog     { background: var(--purple-bg); color: var(--purple);   border-color: var(--purple-muted); }
.badge-interview{ background: var(--green-bg);  color: var(--green);    border-color: var(--green-border); }
.tag-pill-lg    { padding: 3px 13px; font-size: .75rem; }

/* ── Navbar ─────────────────────────────────────────────────── */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 500;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
  height: var(--nav-h);
}
.nav-inner {
  max-width: var(--page-max); margin: 0 auto; padding: 0 28px;
  display: flex; align-items: center; justify-content: space-between; height: 100%;
}
.nav-logo {
  font-size: 1.15rem; font-weight: 800; color: var(--purple);
  text-decoration: none; letter-spacing: -.5px;
  display: flex; align-items: center; gap: 2px;
}
.nav-logo .logo-b { color: var(--aws); }

.nav-links { display: flex; gap: 2px; list-style: none; }
.nav-links a {
  color: var(--text-2); padding: 6px 13px; border-radius: 6px;
  font-size: .875rem; font-weight: 500; text-decoration: none;
  transition: var(--t); display: block;
}
.nav-links a:hover  { color: var(--purple); background: var(--purple-bg); }
.nav-links a.active { color: var(--purple); background: var(--purple-bg); font-weight: 600; }

.nav-has-drop { position: relative; }
.nav-dropdown {
  position: absolute; top: calc(100% + 8px); left: 0;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); min-width: 200px; padding: 6px;
  box-shadow: 0 8px 32px rgba(0,0,0,.1);
  opacity: 0; visibility: hidden; transform: translateY(-6px); transition: var(--t); z-index: 200;
}
.nav-has-drop:hover .nav-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-dropdown a {
  display: flex; align-items: center; gap: 9px;
  padding: 8px 11px; border-radius: 6px; font-size: .83rem;
  color: var(--text-2); border-left: 3px solid transparent;
}
.nav-dropdown a:hover { background: var(--purple-bg); color: var(--purple); border-left-color: var(--purple); }
.nav-dropdown a i { font-size: .82rem; width: 16px; text-align: center; color: var(--aws); }
.nav-drop-divider { height: 1px; background: var(--border); margin: 4px 0; }

.nav-end { display: flex; align-items: center; gap: 8px; }
.nav-search-btn {
  width: 34px; height: 34px; border-radius: 6px;
  background: var(--surface-2); border: 1px solid var(--border);
  color: var(--text-3); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: .85rem; transition: var(--t);
}
.nav-search-btn:hover { background: var(--purple-bg); color: var(--purple); border-color: var(--purple-muted); }
.nav-form-btn {
  padding: 7px 16px;
  background: linear-gradient(135deg, var(--purple) 0%, var(--blue) 100%);
  color: #fff; border-radius: 6px;
  font-size: .82rem; font-weight: 600;
  display: flex; align-items: center; gap: 6px; transition: var(--t);
}
.nav-form-btn:hover { color: #fff; transform: translateY(-1px); box-shadow: var(--sh-purple); }
.nav-burger {
  display: none; width: 34px; height: 34px; border-radius: 6px;
  background: var(--surface-2); border: 1px solid var(--border);
  color: var(--text-2); cursor: pointer;
  align-items: center; justify-content: center; font-size: .95rem;
}
.nav-burger:hover { background: var(--purple-bg); color: var(--purple); }

/* Reading bar */
.reading-bar { position: fixed; top: var(--nav-h); left: 0; right: 0; height: 2px; background: var(--border); z-index: 999; pointer-events: none; }
.reading-bar-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--purple), var(--blue)); transition: width .08s linear; }

/* Mobile drawer */
.mobile-drawer {
  position: fixed; top: var(--nav-h); left: 0; right: 0; bottom: 0;
  background: var(--surface); z-index: 400; overflow-y: auto; padding: 1.25rem 20px;
  border-top: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0,0,0,.12);
  transform: translateX(-100%); transition: transform .3s var(--ease);
}
.mobile-drawer.open { transform: translateX(0); }
.mobile-drawer a {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 12px; border-radius: 8px;
  color: var(--text-2); font-size: .9rem; font-weight: 500;
  border-bottom: 1px solid var(--border); transition: var(--t);
  border-left: 3px solid transparent;
}
.mobile-drawer a:hover { background: var(--purple-bg); color: var(--purple); border-left-color: var(--purple); }
.mobile-drawer a i { color: var(--aws); width: 16px; text-align: center; }
.mobile-form-cta { margin-top: 1.25rem; padding-top: 1.25rem; border-top: 1px solid var(--border); }

/* ── Search overlay ─────────────────────────────────────────── */
.search-overlay {
  position: fixed; inset: 0; z-index: 3000;
  background: rgba(0,0,0,.4); backdrop-filter: blur(4px);
  display: flex; align-items: flex-start; justify-content: center;
  padding-top: 100px; opacity: 0; visibility: hidden; transition: var(--t);
}
.search-overlay.open { opacity: 1; visibility: visible; }
.search-box {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); width: 100%; max-width: 600px;
  overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,.15);
}
.search-row {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
}
.search-row i { color: var(--text-4); font-size: .95rem; }
.search-row input {
  flex: 1; border: none; outline: none; background: transparent;
  font-family: 'Inter', sans-serif; font-size: 1rem; color: var(--text);
}
.search-row input::placeholder { color: var(--text-4); }
.search-hint {
  font-size: .72rem; color: var(--text-4); font-family: 'Fira Code', monospace;
  background: var(--surface-2); border: 1px solid var(--border);
  padding: 3px 8px; border-radius: 5px; white-space: nowrap;
}
.search-results { max-height: 400px; overflow-y: auto; padding: 8px; }
.search-item {
  display: flex; gap: 10px; align-items: center;
  padding: 11px 13px; border-radius: 8px; cursor: pointer;
  transition: var(--t); text-decoration: none; color: inherit;
}
.search-item:hover { background: var(--purple-bg); }
.search-item-icon {
  width: 34px; height: 34px; border-radius: 7px; flex-shrink: 0;
  background: var(--purple-bg); color: var(--purple);
  display: flex; align-items: center; justify-content: center; font-size: .8rem;
}
.search-item-title { font-weight: 600; font-size: .88rem; color: var(--text); }
.search-item-cat   { font-size: .73rem; color: var(--text-4); margin-top: 2px; }
.search-empty { padding: 2rem; text-align: center; color: var(--text-4); font-size: .88rem; }

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--purple) 0%, #4f46e5 50%, var(--cyan) 100%);
  padding: 80px 28px 72px; text-align: center;
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 48px 48px; pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; max-width: var(--page-max); margin: 0 auto; }
.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,.2); color: #fff;
  border: 1px solid rgba(255,255,255,.35); padding: 5px 16px;
  border-radius: var(--r-pill); font-size: .72rem; font-weight: 700;
  letter-spacing: 1px; text-transform: uppercase;
  margin-bottom: 22px; animation: fadeDown .6s ease both;
}
.hero h1 { color: #fff; font-size: clamp(2rem,4vw,3rem); font-weight: 800; line-height: 1.18; margin-bottom: 16px; animation: fadeDown .6s .1s ease both; letter-spacing: -.5px; }
.hero h1 em { color: #fde68a; font-style: normal; }
.hero p { color: rgba(255,255,255,.88); max-width: 520px; margin: 0 auto 32px; font-size: 1rem; line-height: 1.7; animation: fadeDown .6s .2s ease both; }
.hero-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 32px; animation: fadeDown .6s .3s ease both; }
.hero-chips { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; animation: fadeDown .6s .4s ease both; }
.chip { background: rgba(255,255,255,.2); color: #fff; border: 1px solid rgba(255,255,255,.3); padding: 4px 13px; border-radius: var(--r-pill); font-size: .75rem; font-weight: 600; }

/* Hero buttons on dark bg */
.hero .btn-primary { background: #fff; color: var(--purple); box-shadow: 0 4px 14px rgba(0,0,0,.15); }
.hero .btn-primary:hover { background: #f8f9fa; transform: translateY(-1px); color: var(--purple); }
.hero .btn-outline { border-color: rgba(255,255,255,.5); color: #fff; background: rgba(255,255,255,.1); }
.hero .btn-outline:hover { background: rgba(255,255,255,.2); border-color: #fff; color: #fff; }

/* ── Stats bar ──────────────────────────────────────────────── */
.stats-bar {
  background: var(--surface); border-bottom: 1px solid var(--border);
  padding: 20px 28px;
}
.stats-inner {
  max-width: var(--page-max); margin: 0 auto;
  display: flex; gap: 40px; justify-content: center; flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-num   { font-size: 1.65rem; font-weight: 800; line-height: 1.2; display: block; }
.stat-label { font-size: .72rem; color: var(--text-4); font-weight: 600; text-transform: uppercase; letter-spacing: .5px; margin-top: 3px; }
.s-purple { color: var(--purple); }
.s-orange { color: var(--aws); }
.s-green  { color: var(--green); }
.s-blue   { color: var(--blue); }

/* ── Posts section ─────────────────────────────────────────── */
.posts-section, .sec { padding: 56px 0; }
.sec-alt { background: var(--surface); border-bottom: 1px solid var(--border); }
.section-head, .sec-hd { display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px; }
.section-head h2, .sec-title { font-size: 1.4rem; font-weight: 800; color: var(--text); letter-spacing: -.3px; }
.sec-eye { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; color: var(--text-4); display: block; margin-bottom: 4px; }
.view-all { color: var(--purple); font-weight: 600; font-size: .85rem; text-decoration: none; }
.view-all:hover { color: var(--purple-lt); text-decoration: underline; }

/* Post grid */
.posts-grid, .post-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.post-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 22px; box-shadow: var(--sh-card); transition: .2s;
  display: flex; flex-direction: column; animation: fadeUp .5s ease both;
  text-decoration: none; color: inherit;
}
.post-card:hover { transform: translateY(-3px); box-shadow: var(--sh-hover); border-color: var(--purple-muted); }
.post-card:nth-child(1) { animation-delay: .05s; }
.post-card:nth-child(2) { animation-delay: .12s; }
.post-card:nth-child(3) { animation-delay: .19s; }
.post-card:nth-child(4) { animation-delay: .26s; }
.post-card:nth-child(5) { animation-delay: .33s; }
.post-card:nth-child(6) { animation-delay: .40s; }
.card-meta  { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; margin-bottom: 10px; }
.card-date  { color: var(--text-4); font-size: .72rem; margin-left: auto; }
.post-card h3 { font-size: .95rem; font-weight: 700; line-height: 1.4; color: var(--text); margin-bottom: 8px; }
.post-card p  { color: var(--text-3); font-size: .85rem; line-height: 1.6; flex: 1; }
.read-link  { margin-top: 14px; color: var(--purple); font-weight: 600; font-size: .8rem; }

/* ── Service cards ──────────────────────────────────────────── */
.service-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px,1fr)); gap: 12px; }
.svc-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 16px 18px; display: flex; align-items: center; gap: 12px;
  transition: var(--t); text-decoration: none; color: inherit; box-shadow: var(--sh-card);
}
.svc-card:hover { border-color: var(--purple-muted); transform: translateY(-2px); box-shadow: var(--sh-hover); }
.svc-icon  { width: 40px; height: 40px; border-radius: 8px; background: var(--purple-bg); color: var(--purple); display: flex; align-items: center; justify-content: center; font-size: 1.1rem; flex-shrink: 0; }
.svc-icon.aws    { background: var(--aws-bg); color: var(--aws); }
.svc-icon.devops { background: var(--blue-bg); color: var(--blue); }
.svc-name  { font-weight: 700; font-size: .9rem; color: var(--text); }
.svc-count { font-size: .74rem; color: var(--text-3); margin-top: 2px; }

/* ── Featured band ─────────────────────────────────────────── */
.featured-band {
  background: linear-gradient(135deg, var(--purple) 0%, #4f46e5 50%, var(--blue) 100%);
  padding: 56px 28px; position: relative; overflow: hidden;
}
.featured-band::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 40px 40px; pointer-events: none;
}
.featured-inner { max-width: var(--page-max); margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; position: relative; z-index: 1; }
.featured-text h2 { color: #fff; font-size: 1.5rem; font-weight: 800; margin-bottom: 12px; letter-spacing: -.3px; }
.featured-text p  { color: rgba(255,255,255,.8); font-size: .9rem; line-height: 1.7; margin-bottom: 20px; }
.featured-code {
  background: rgba(255,255,255,.1); border-radius: var(--r-lg);
  padding: 24px; border: 1px solid rgba(255,255,255,.15);
  font-family: 'Fira Code', monospace; font-size: .78rem; line-height: 1.8; color: rgba(255,255,255,.8);
  backdrop-filter: blur(4px);
}
.code-line  { display: block; }
.c-comment  { color: rgba(255,255,255,.35); }
.c-key      { color: #a5d6ff; }
.c-val      { color: #c3e6ff; }
.c-str      { color: #a8ff78; }
.c-cyan     { color: #7dd3fc; }
.c-yellow   { color: #fde68a; }

/* ── Category hero ─────────────────────────────────────────── */
.cat-hero {
  background: linear-gradient(135deg, var(--purple) 0%, #4f46e5 60%, var(--blue) 100%);
  padding: 52px 28px 44px; position: relative; overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.cat-hero::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 40px 40px; pointer-events: none;
}
.cat-hero-inner { max-width: var(--page-max); margin: 0 auto; position: relative; z-index: 1; }
.cat-icon {
  width: 52px; height: 52px; border-radius: var(--r); display: flex;
  align-items: center; justify-content: center; font-size: 1.4rem;
  margin-bottom: 14px; background: rgba(255,255,255,.2);
  color: #fff; border: 1px solid rgba(255,255,255,.3);
}
.cat-hero h1 { color: #fff; font-size: clamp(1.5rem,3vw,2.1rem); font-weight: 800; margin-bottom: .75rem; letter-spacing: -.3px; }
.cat-hero p  { color: rgba(255,255,255,.82); font-size: .95rem; max-width: 560px; }
.cat-hero-meta { margin-top: 1rem; font-size: .82rem; color: rgba(255,255,255,.55); }

/* ── Breadcrumb ─────────────────────────────────────────────── */
.breadcrumb {
  display: flex; align-items: center; gap: 7px; flex-wrap: wrap;
  font-size: .8rem; color: rgba(255,255,255,.55); padding: 12px 0 0;
}
.breadcrumb a { color: rgba(255,255,255,.55); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb-sep { color: rgba(255,255,255,.3); font-size: .65rem; }
.breadcrumb span { color: rgba(255,255,255,.85); }
.breadcrumb-light { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; font-size: .8rem; color: var(--text-3); padding: 16px 0 0; }
.breadcrumb-light a { color: var(--text-3); }
.breadcrumb-light a:hover { color: var(--purple); }
.breadcrumb-light span { color: var(--text); }
.breadcrumb-light .breadcrumb-sep { font-size: .65rem; }

/* ── Single article ─────────────────────────────────────────── */
.post-page { padding: 48px 0; }
.post-page-inner { max-width: 740px; margin: 0 auto; }
.post-header { margin-bottom: 36px; }
.post-tags-top { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 14px; }
.post-header h1 { font-size: clamp(1.5rem,3vw,2rem); font-weight: 800; color: var(--text); line-height: 1.25; margin-bottom: 14px; letter-spacing: -.3px; }
.post-meta-row  { display: flex; gap: 18px; color: var(--text-3); font-size: .82rem; flex-wrap: wrap; }
.divider { height: 1px; background: var(--border); margin: 28px 0; }

/* Art header */
.art-header { margin-bottom: 36px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.art-badges { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 14px; }
.art-title  { font-size: clamp(1.4rem,2.5vw,1.9rem); font-weight: 800; color: var(--text); line-height: 1.25; margin-bottom: 12px; letter-spacing: -.3px; }
.art-desc   { color: var(--text-2); font-size: 1rem; margin-bottom: 14px; line-height: 1.65; }
.art-meta   { display: flex; gap: 18px; color: var(--text-3); font-size: .82rem; flex-wrap: wrap; }
.art-meta i { color: var(--aws); margin-right: 5px; }
.art-tags   { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 12px; }
.art-tag    { background: var(--surface-2); color: var(--text-3); border: 1px solid var(--border); padding: 2px 10px; border-radius: var(--r-pill); font-size: .73rem; font-weight: 600; transition: var(--t); }
.art-tag:hover { background: var(--purple-bg); color: var(--purple); border-color: var(--purple-muted); }

/* Article sidebar layout */
.article-layout { display: grid; grid-template-columns: 280px 1fr; gap: 2rem; align-items: start; }
.article-layout > * { min-width: 0; }
.article-sidebar { position: sticky; top: calc(var(--nav-h) + 16px); height: fit-content; align-self: flex-start; max-height: calc(100vh - var(--nav-h) - 32px); overflow-y: auto;}
.toc-box {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 18px; margin-bottom: 14px; overflow: hidden;
  border-top: 3px solid var(--purple);
}
.toc-box h4, .toc-box-title {
  font-size: .72rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; color: var(--text-3); margin-bottom: 12px;
}
.toc-box ul { list-style: none; padding: 0; margin: 0; }
.toc-box ul li a {
  display: block; padding: 5px 9px; border-radius: 5px; font-size: .82rem;
  color: var(--text-3); border-left: 2px solid transparent; transition: var(--t);
}
.toc-box ul li a:hover, .toc-box ul li a.active {
  color: var(--purple); background: var(--purple-bg); border-left-color: var(--purple);
}
.toc-box ul ul { padding-left: 12px; }
.sidebar-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 14px; margin-bottom: 12px;
}
.sidebar-card-title { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--text-3); margin-bottom: 10px; }
.share-btns { display: flex; gap: 7px; }
.share-btns a, .share-btns button {
  flex: 1; height: 34px; border-radius: 6px;
  background: var(--surface-2); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: .82rem; color: var(--text-3); cursor: pointer; transition: var(--t); text-decoration: none;
}
.share-btns a:hover, .share-btns button:hover { background: var(--purple-bg); color: var(--purple); border-color: var(--purple-muted); }

/* ── Prose / Article body ────────────────────────────────────── */
.prose, .post-body { font-size: .97rem; line-height: 1.85; color: var(--text); min-width: 0; overflow-wrap: break-word; word-break: break-word; }
.prose h2, .post-body h2 {
  font-size: 1.3rem; font-weight: 800; color: var(--purple);
  margin: 40px 0 14px; padding: 12px 18px;
  background: linear-gradient(135deg, var(--purple-bg), var(--blue-bg));
  border-left: 5px solid var(--purple);
  border-radius: 0 var(--r-lg) var(--r-lg) 0;
  letter-spacing: -.2px;
}
.prose h3, .post-body h3 {
  font-size: 1.05rem; font-weight: 700; color: var(--text);
  margin: 26px 0 10px; padding-bottom: 8px;
  border-bottom: 2px solid var(--border);
}
.prose h4, .post-body h4 { font-size: .95rem; font-weight: 700; color: var(--text); margin: 18px 0 8px; }
.prose p, .post-body p  { margin-bottom: 16px; color: var(--text-2); }
.prose ul, .prose ol, .post-body ul, .post-body ol { margin: 12px 0 16px 22px; }
.prose li, .post-body li { margin-bottom: 7px; color: var(--text-2); }
.prose a { color: var(--purple); font-weight: 500; text-decoration: underline; text-decoration-color: var(--purple-muted); }
.prose a:hover { color: var(--purple-lt); }

.prose blockquote, .post-body blockquote {
  border-left: 4px solid #38bdf8; background: #f0f9ff; color: #0c4a6e;
  padding: 13px 18px; border-radius: 0 var(--r) var(--r) 0; margin: 20px 0; font-size: .9rem;
}

/* ── CODE BLOCKS ─────────────────────────────────────────────── */
/* Override hljs dark stylesheet to light */
.hljs { background: var(--code-surface) !important; color: #334155 !important; }
.hljs-keyword, .hljs-selector-tag { color: #7c3aed !important; font-weight: 600; }
.hljs-string, .hljs-attribute     { color: #16a34a !important; }
.hljs-comment, .hljs-quote        { color: #94a3b8 !important; font-style: italic; }
.hljs-number, .hljs-literal       { color: #d97706 !important; }
.hljs-attr                        { color: #2563eb !important; }
.hljs-variable, .hljs-template-variable { color: #0891b2 !important; }
.hljs-title, .hljs-section        { color: #7c3aed !important; font-weight: 700; }
.hljs-built_in, .hljs-builtin-name{ color: #0891b2 !important; }
.hljs-type                        { color: #7c3aed !important; }
.hljs-name, .hljs-tag             { color: #2563eb !important; }
.hljs-params                      { color: #475569 !important; }
.hljs-symbol, .hljs-bullet        { color: #d97706 !important; }
.hljs-deletion                    { background: var(--red-bg) !important; color: var(--red) !important; }
.hljs-addition                    { background: var(--green-bg) !important; color: var(--green) !important; }

/* Pre block wrapper */
.prose pre, .post-body pre, .qa-ans-inner pre {
  margin: 18px 0;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh-card);
  background: transparent !important;
  position: relative;
}

/* Code content area */
.prose pre code, .post-body pre code, .qa-ans-inner pre code {
  display: block;
  background: var(--code-surface) !important;
  padding: 16px 100px 16px 18px !important;
  overflow-x: auto;
  font-family: 'Fira Code', monospace;
  font-size: .82rem !important;
  line-height: 1.75;
  color: #334155 !important;
  border-radius: var(--r-lg);
}

/* Copy button — absolute top-right inside pre */

/* Inline code */
.prose :not(pre) > code, .post-body :not(pre) > code {
  background: var(--code-bg); color: var(--purple);
  padding: 2px 7px; border-radius: 5px; font-size: .84em;
  border: 1px solid var(--purple-muted);
}

/* ── Copy Button ─────────────────────────────────────────────── */
.copy-btn {
  position: absolute;
  top: 10px;
  right: 12px;
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--surface); border: 1px solid var(--border-2);
  border-radius: 6px; padding: 5px 11px;
  font-size: .73rem; font-weight: 600; color: var(--text-2);
  cursor: pointer; transition: var(--t);
  font-family: 'Inter', sans-serif;
  white-space: nowrap;
  z-index: 2;
}
.copy-btn:hover { background: var(--purple-bg); color: var(--purple); border-color: var(--purple-muted); }
.copy-btn.copied { background: var(--green-bg); color: var(--green); border-color: var(--green-border); }

/* ── Tables ──────────────────────────────────────────────────── */
.prose table, .post-body table {
  width: 100%; border-collapse: collapse; margin: 1.5rem 0;
  font-size: .88rem; border-radius: var(--r-lg); overflow: hidden;
  border: 1px solid var(--border); box-shadow: var(--sh-card);
}
.prose th, .post-body th {
  background: linear-gradient(135deg, var(--purple-bg), #ddd6fe);
  color: var(--purple); padding: 10px 14px; text-align: left;
  font-size: .8rem; font-weight: 700; letter-spacing: .5px;
  border-bottom: 2px solid var(--purple-muted);
}
.prose td, .post-body td { padding: 9px 14px; border-bottom: 1px solid var(--border); color: var(--text-2); }
.prose tr:nth-child(even) td, .post-body tr:nth-child(even) td { background: #fafafe; }
.prose tr:last-child td, .post-body tr:last-child td { border-bottom: none; }
.prose tr:hover td, .post-body tr:hover td { background: var(--purple-bg); }

/* ── Callout boxes ─────────────────────────────────────────── */
.callout { display: flex; gap: 12px; align-items: flex-start; padding: 13px 16px; border-radius: var(--r); margin: 20px 0; border: 1px solid; font-size: .92rem; }
.callout-ico { font-size: .95rem; margin-top: 3px; flex-shrink: 0; }
.callout-label { font-weight: 700; font-size: .83rem; margin-bottom: 4px; }
.callout p:last-child { margin: 0; }
.callout.tip    { background: var(--green-bg); border-color: var(--green-border); color: #14532d; }
.callout.tip .callout-ico { color: var(--green); }
.callout.warn   { background: var(--yellow-bg); border-color: var(--yellow-border); color: #713f12; }
.callout.warn .callout-ico { color: var(--yellow); }
.callout.danger { background: var(--red-bg); border-color: var(--red-border); color: #7f1d1d; }
.callout.danger .callout-ico { color: var(--red); }
.callout.info   { background: var(--blue-bg); border-color: var(--blue-border); color: #1e3a5f; }
.callout.info .callout-ico { color: var(--blue); }
.callout.aws    { background: var(--aws-bg); border-color: var(--aws-border); color: #78350f; }
.callout.aws .callout-ico { color: var(--aws); }

/* ── Q&A Interview ─────────────────────────────────────────── */
.interview-hero {
  background: linear-gradient(135deg, var(--purple) 0%, #4f46e5 50%, var(--blue) 100%);
  padding: 56px 28px 48px; border-bottom: 1px solid var(--border); position: relative; overflow: hidden;
}
.interview-hero::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 40px 40px; pointer-events: none;
}
.interview-hero-inner { max-width: var(--page-max); margin: 0 auto; position: relative; z-index: 1; }
.interview-hero h1 { color: #fff; font-size: clamp(1.5rem,3vw,2.2rem); font-weight: 800; margin-bottom: .75rem; letter-spacing: -.3px; }
.interview-hero p  { color: rgba(255,255,255,.82); font-size: .95rem; max-width: 560px; }

.qa-controls {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 12px 16px; margin-bottom: 1.5rem;
  box-shadow: var(--sh-card);
}
.filter-pills { display: flex; gap: 7px; flex-wrap: wrap; flex: 1; }
.pill {
  padding: 5px 14px; border-radius: var(--r-pill); cursor: pointer;
  font-size: .8rem; font-weight: 600; font-family: 'Inter', sans-serif;
  border: 1.5px solid var(--border); background: var(--surface);
  color: var(--text-3); transition: var(--t);
}
.pill:hover  { border-color: var(--purple-muted); color: var(--purple); }
.pill.active { background: var(--purple); color: #fff; border-color: var(--purple); }

.qa-list { display: flex; flex-direction: column; gap: 8px; margin: 1.5rem 0; width: 100%; min-width: 0; }
.qa-item {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); overflow: hidden; transition: var(--t);
  box-shadow: var(--sh-card); width: 100%; min-width: 0;
}
.qa-item:hover { border-color: var(--purple-muted); box-shadow: var(--sh-hover); }
.qa-q {
  padding: 13px 18px; display: flex; align-items: center; gap: 12px;
  cursor: pointer; user-select: none; transition: var(--t);
}
.qa-q:hover { background: var(--surface-2); }
.qa-num {
  flex-shrink: 0; width: 28px; height: 28px; border-radius: 6px;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  color: #fff; font-size: .72rem; font-weight: 800; font-family: 'Fira Code', monospace;
  display: flex; align-items: center; justify-content: center;
}
.qa-text   { flex: 1; font-weight: 600; font-size: .92rem; color: var(--text); min-width: 0; word-break: break-word; overflow-wrap: break-word; }
.qa-lvl    { padding: 2px 9px; border-radius: var(--r-pill); font-size: .68rem; font-weight: 700; text-transform: uppercase; }
.qa-lvl.basic        { background: var(--green-bg); color: var(--green); border: 1px solid var(--green-border); }
.qa-lvl.intermediate { background: var(--yellow-bg); color: var(--yellow); border: 1px solid var(--yellow-border); }
.qa-lvl.advanced     { background: var(--red-bg);    color: var(--red);    border: 1px solid var(--red-border); }
.qa-toggle {
  width: 26px; height: 26px; border-radius: 6px; flex-shrink: 0;
  background: var(--surface-2); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: .75rem; color: var(--text-3); transition: var(--t);
}
.qa-item.open .qa-toggle { background: var(--purple); color: #fff; border-color: var(--purple); transform: rotate(45deg); }
.qa-ans { padding: 0 18px; max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .3s ease; }
.qa-item.open .qa-ans { max-height: 900px; padding: 0 18px 18px; }
.qa-ans-inner {
  padding-top: 14px; border-top: 1px solid var(--border);
  font-size: .9rem; line-height: 1.8; color: var(--text-2);
}
.qa-ans-inner p:last-child { margin: 0; }
.qa-ans-inner pre {
  background: var(--code-surface); border-radius: 8px;
  font-size: .77rem; line-height: 1.75; color: #334155;
  margin: 12px 0; border: 1px solid var(--border); overflow-x: auto;
}
.qa-ans-inner table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: .85rem; border-radius: 8px; overflow: hidden; border: 1px solid var(--border); }
.qa-ans-inner th { background: linear-gradient(135deg, var(--purple-bg), #ddd6fe); color: var(--purple); padding: 9px 12px; text-align: left; font-size: .8rem; border-bottom: 2px solid var(--purple-muted); }
.qa-ans-inner td { padding: 8px 12px; border-bottom: 1px solid var(--border); }
.qa-ans-inner tr:nth-child(even) td { background: var(--surface-2); }
.qa-ans-inner tr:last-child td { border-bottom: none; }

/* ── Form CTA ───────────────────────────────────────────────── */
.form-cta {
  background: var(--purple-bg); border: 1px solid var(--purple-muted);
  border-radius: var(--r-lg); padding: 28px 32px; margin: 2.5rem 0;
  display: flex; gap: 18px; align-items: center;
}
.form-cta-ico {
  width: 52px; height: 52px; border-radius: var(--r); flex-shrink: 0;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: #fff;
}
.form-cta h3 { color: var(--purple); font-size: 1.05rem; margin: 0 0 .35rem; }
.form-cta p  { color: var(--text-2); font-size: .88rem; margin: 0 0 1rem; }
.form-banner {
  background: linear-gradient(135deg, var(--purple) 0%, #4f46e5 50%, var(--blue) 100%);
  border-radius: var(--r-lg); padding: 3rem 2rem; text-align: center;
  position: relative; overflow: hidden;
}
.form-banner::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 40px 40px; pointer-events: none;
}
.form-banner-inner { position: relative; z-index: 1; }
.form-banner h2 { color: #fff; font-size: 1.5rem; font-weight: 800; margin-bottom: .75rem; }
.form-banner p  { color: rgba(255,255,255,.82); max-width: 480px; margin: 0 auto 1.75rem; font-size: .95rem; }

/* ── Footer ─────────────────────────────────────────────────── */
.site-footer {
  background: var(--text); padding: 26px 28px;
}
.footer-inner {
  max-width: var(--page-max); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.footer-inner p      { color: rgba(255,255,255,.4); font-size: .82rem; }
.footer-inner strong { color: #a78bfa; }
.footer-links        { display: flex; gap: 20px; }
.footer-links a      { color: rgba(255,255,255,.4); font-size: .82rem; text-decoration: none; transition: var(--t); }
.footer-links a:hover{ color: #a78bfa; }

/* ── About page ──────────────────────────────────────────────── */
.about-page { padding: 64px 0; }
.about-inner { max-width: 780px; margin: 0 auto; }
.about-hero {
  background: linear-gradient(135deg, var(--purple), var(--blue));
  border-radius: var(--r-lg); padding: 40px; display: flex;
  gap: 32px; align-items: center; margin-bottom: 40px;
}
.avatar {
  width: 90px; height: 90px; border-radius: 50%;
  background: rgba(255,255,255,.2); border: 3px solid rgba(255,255,255,.4);
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; font-weight: 800; color: #fff; flex-shrink: 0;
}
.about-bio h2   { color: #fff; font-size: 1.4rem; font-weight: 800; margin-bottom: 6px; }
.about-bio .role{ color: rgba(255,255,255,.75); font-size: .85rem; margin-bottom: 10px; }
.about-bio p    { color: rgba(255,255,255,.72); font-size: .88rem; line-height: 1.6; }
.skills-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; margin-bottom: 32px; }
.skill-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 20px; box-shadow: var(--sh-card); }
.skill-card h4 { color: var(--text); font-size: .88rem; font-weight: 700; margin-bottom: 10px; }
.skill-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.skill-tag { background: var(--purple-bg); color: var(--purple); padding: 2px 10px; border-radius: var(--r-pill); font-size: .72rem; font-weight: 600; border: 1px solid var(--purple-muted); }

/* Pagination */
.pagination { display: flex; align-items: center; justify-content: center; gap: 6px; padding: 2rem 0; }
.pagination a, .pagination span {
  min-width: 38px; height: 38px; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: .87rem; font-weight: 600; border: 1px solid var(--border);
  color: var(--text-3); transition: var(--t); text-decoration: none;
}
.pagination a:hover { border-color: var(--purple); color: var(--purple); background: var(--purple-bg); }
.pagination .active { background: var(--purple); color: #fff; border-color: var(--purple); }

/* Back to top */
.btt {
  position: fixed; bottom: 22px; right: 22px; z-index: 500;
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--purple); color: #fff; border: none;
  display: flex; align-items: center; justify-content: center; font-size: .95rem;
  cursor: pointer; box-shadow: var(--sh-purple); transition: var(--t);
  opacity: 0; visibility: hidden; transform: translateY(10px);
}
.btt.show  { opacity: 1; visibility: visible; transform: translateY(0); }
.btt:hover { background: var(--purple-lt); transform: translateY(-2px); }

/* Animations */
@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Ticker strip ────────────────────────────────────────────── */
.ticker-wrap {
  background: var(--surface-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden; padding: 10px 0; user-select: none;
}
.ticker-track {
  display: flex; gap: 0; width: max-content;
  animation: ticker 32s linear infinite;
}
.ticker-track:hover { animation-play-state: paused; }
.ticker-track span {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 0 28px; font-size: .78rem; font-weight: 600;
  color: var(--text-3); white-space: nowrap;
  border-right: 1px solid var(--border); transition: color .2s;
}
.ticker-track span:hover { color: var(--purple); }
.ticker-track span i { font-size: .85rem; color: var(--aws); }
@keyframes ticker {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ── Tech showcase ──────────────────────────────────────────── */
.tech-showcase { padding: 64px 0; }
.tech-row { margin-bottom: 36px; }
.tech-row-label {
  font-size: .75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .1em; color: var(--text-3); margin-bottom: 14px;
  display: flex; align-items: center; gap: 8px;
}
.tech-row-label i { color: var(--purple); }
.tech-cards-scroll {
  display: flex; gap: 12px; overflow-x: auto; padding-bottom: 6px;
  scrollbar-width: thin; scrollbar-color: var(--border) transparent;
}
.tech-cards-scroll::-webkit-scrollbar { height: 4px; }
.tech-cards-scroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }

.tsc {
  flex-shrink: 0; width: 108px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 16px 12px 14px;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  text-decoration: none; color: inherit; transition: .2s;
  position: relative; overflow: hidden; box-shadow: var(--sh-card);
}
.tsc::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--tc, var(--purple)); opacity: 0; transition: .2s;
}
.tsc:hover { border-color: var(--tc, var(--purple-muted)); transform: translateY(-4px); box-shadow: var(--sh-hover); }
.tsc:hover::before { opacity: 1; }
.tsc-icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; transition: .2s;
}
.tsc-name { font-size: .78rem; font-weight: 700; color: var(--text); text-align: center; line-height: 1.25; }
.tsc-desc { font-size: .65rem; color: var(--text-3); text-align: center; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .posts-grid, .post-grid { grid-template-columns: repeat(2,1fr); }
  .featured-inner { grid-template-columns: 1fr; }
  .featured-code  { display: none; }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar{ display: none; }
}
@media (max-width: 640px) {
  :root { --nav-h: 56px; }
  .nav-links, .nav-form-btn { display: none; }
  .nav-burger  { display: flex; }
  .posts-grid, .post-grid { grid-template-columns: 1fr; }
  .service-grid{ grid-template-columns: 1fr 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .about-hero  { flex-direction: column; text-align: center; }
  .form-cta    { flex-direction: column; text-align: center; }
  .stats-inner { gap: 24px; }
  .hero        { padding: 60px 20px 52px; }
  .container, .wrap { padding: 0 16px; }
}
@media (max-width: 400px) {
  .service-grid { grid-template-columns: 1fr; }
}

.art-cover {
  width: 100%;
  max-height: 420px;
  overflow: hidden;
  border-radius: var(--r-lg);
  margin-bottom: 2rem;
  border: 1px solid var(--border);
}

.art-cover img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  display: block;
}

.mermaid {
  font-size: 16px;
}

.btn-course{
  background: linear-gradient(135deg,#7c3aed,#4f46e5);
  color:#fff;
  border:1px solid rgba(255,255,255,.12);
  transition:.3s ease;
}

.btn-course:hover{
  transform:translateY(-2px);
  box-shadow:0 10px 24px rgba(124,58,237,.35);
}






.docs-wrapper{
  display:flex;
  min-height:100vh;
  background:#0b1120;
  color:#fff;
}

.docs-sidebar{
  width:300px;
  background:#111827;
  border-right:1px solid rgba(255,255,255,.08);
  padding:20px;
  overflow-y:auto;
  position:sticky;
  top:0;
  height:100vh;
}

.sidebar-top{
  display:flex;
  gap:10px;
  margin-bottom:20px;
}

.sidebar-top input{
  flex:1;
  background:#1e293b;
  border:none;
  padding:10px;
  border-radius:10px;
  color:#fff;
}

#toggleSidebar{
  background:#1e293b;
  border:none;
  color:#fff;
  padding:10px 14px;
  border-radius:10px;
}

.progress-box{
  margin-bottom:24px;
}

.progress-text{
  margin-bottom:8px;
  font-size:14px;
}

.progress-bar{
  width:100%;
  height:10px;
  background:#1e293b;
  border-radius:999px;
  overflow:hidden;
}

.progress-fill{
  height:100%;
  width:0;
  background:#8b5cf6;
}

.nav-group{
  margin-bottom:18px;
}

.nav-toggle{
  width:100%;
  display:flex;
  justify-content:space-between;
  align-items:center;
  background:#1e293b;
  border:none;
  color:#fff;
  padding:12px;
  border-radius:10px;
  cursor:pointer;
}

.docs-wrapper .nav-links{
  list-style:none;
  padding-left:12px;
  margin-top:8px;
  display:none;
}

.docs-wrapper .nav-links.open{
  display:block;
}

.nav-links li{
  margin:10px 0;
}

.nav-links a{
  color:#cbd5e1;
  text-decoration:none;
}

.nav-links a:hover{
  color:#fff;
}

.docs-main{
  flex:1;
  padding:40px;
  max-width:1000px;
  margin:auto;
}

.docs-content{
  line-height:1.8;
}

.docs-content pre{
  background:#020617;
  padding:18px;
  border-radius:14px;
  overflow:auto;
  position:relative;
}

.copy-btn{
  position:absolute;
  top:10px;
  right:10px;
  background:#8b5cf6;
  border:none;
  color:#fff;
  padding:6px 12px;
  border-radius:8px;
  cursor:pointer;
}

.prev-next{
  display:flex;
  justify-content:space-between;
  margin-top:60px;
}

.prev-next a{
  background:#111827;
  padding:14px 18px;
  border-radius:12px;
  color:#fff;
  text-decoration:none;
}

.docs-topbar{
  display:flex;
  justify-content:flex-end;
  margin-bottom:30px;
}

#themeToggle{
  background:#1e293b;
  border:none;
  color:#fff;
  padding:10px 16px;
  border-radius:10px;
  cursor:pointer;
}

/* LIGHT MODE */

body.light{
  background:#f8fafc;
  color:#0f172a;
}

body.light .docs-wrapper{
  background:#fff;
  color:#0f172a;
}

body.light .docs-sidebar{
  background:#f1f5f9;
}

body.light .nav-toggle,
body.light .sidebar-top input,
body.light #toggleSidebar,
body.light #themeToggle{
  background:#e2e8f0;
  color:#0f172a;
}

body.light .docs-content pre{
  background:#e2e8f0;
}

body.light .prev-next a{
  background:#e2e8f0;
  color:#0f172a;
}


/* ================================================================
   COURSES — append these rules to the bottom of main.css
   ================================================================ */

/* ── Courses list hero ────────────────────────────────────────── */
.courses-list-hero {
  background: linear-gradient(135deg, var(--purple) 0%, #4f46e5 55%, var(--cyan) 100%);
  padding: 56px 28px 48px;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.courses-list-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.courses-list-hero .wrap  { position: relative; z-index: 1; }
.courses-list-hero h1     { color: #fff; font-size: clamp(1.6rem,3vw,2.2rem); font-weight: 800; margin-bottom: .75rem; letter-spacing: -.3px; }
.courses-list-hero .cat-icon { margin-bottom: 14px; }

/* ── Course card grid ─────────────────────────────────────────── */
.crs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 22px;
}

.crs-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--sh-card);
  transition: .2s var(--ease);
}
.crs-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(109,40,217,.14);
  border-color: var(--purple-muted);
}

/* Thumbnail */
.crs-thumb {
  width: 100%;
  height: 168px;
  background: linear-gradient(135deg, var(--purple-bg), var(--blue-bg));
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}
.crs-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .35s var(--ease);
}
.crs-card:hover .crs-thumb img { transform: scale(1.04); }

.crs-thumb-icon {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  background: linear-gradient(135deg, var(--purple-bg) 0%, var(--blue-bg) 100%);
}

.crs-level-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  font-size: .67rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  background: rgba(255,255,255,.9);
  color: var(--purple);
  border: 1px solid var(--purple-muted);
  backdrop-filter: blur(4px);
}
.crs-level-badge.beginner     { color: var(--green); border-color: var(--green-border); }
.crs-level-badge.intermediate { color: var(--yellow); border-color: var(--yellow-border); }
.crs-level-badge.advanced     { color: var(--red); border-color: var(--red-border); }

/* Body */
.crs-body {
  padding: 18px 20px 14px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.crs-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.crs-title {
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.35;
  letter-spacing: -.2px;
}
.crs-desc {
  font-size: .85rem;
  color: var(--text-3);
  line-height: 1.6;
  flex: 1;
}
.crs-meta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: .78rem;
  color: var(--text-4);
  margin-top: 2px;
}
.crs-meta i { color: var(--aws); margin-right: 4px; }

/* Footer */
.crs-foot {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface-2);
}
.crs-free-badge {
  font-size: .75rem;
  font-weight: 700;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 5px;
}
.crs-start-btn {
  font-size: .8rem;
  font-weight: 700;
  color: var(--purple);
  display: flex;
  align-items: center;
  gap: 5px;
  transition: gap .15s;
}
.crs-card:hover .crs-start-btn { gap: 8px; }


/* ================================================================
   COURSE DOCS LAYOUT (single.html)
   ================================================================ */

/* Shell — 3-column grid */
.cdocs-shell {
  display: grid;
  grid-template-columns: 268px 1fr 220px;
  min-height: calc(100vh - var(--nav-h));
  align-items: start;
}

/* ── Left Sidebar ─────────────────────────────────────────────── */
.cdocs-sidebar {
  position: sticky;
  top: var(--nav-h);
  height: calc(100vh - var(--nav-h));
  overflow-y: auto;
  border-right: 1px solid var(--border);
  background: var(--surface);
  padding: 0 0 2rem;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.cdocs-sidebar::-webkit-scrollbar { width: 4px; }
.cdocs-sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }

.cdocs-sidebar-top {
  padding: 18px 18px 14px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--surface);
  z-index: 2;
}
.cdocs-back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-4);
  text-decoration: none;
  margin-bottom: 10px;
  transition: color .15s;
}
.cdocs-back-link:hover { color: var(--purple); }
.cdocs-course-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.cdocs-course-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .95rem;
  color: #fff;
  flex-shrink: 0;
}
.cdocs-course-name {
  font-size: .9rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -.2px;
}

/* Navigation */
.cdocs-nav { padding: 12px 10px 0; }

.cdocs-nav-group { margin-bottom: 4px; }

.cdocs-nav-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  background: none;
  border: none;
  border-radius: 7px;
  font-family: 'Inter', sans-serif;
  font-size: .78rem;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .06em;
  cursor: pointer;
  transition: .15s;
  text-align: left;
}
.cdocs-nav-toggle:hover { background: var(--surface-2); color: var(--text-2); }
.cdocs-nav-toggle.open  { color: var(--purple); }

.cdocs-chevron {
  font-size: .68rem;
  transition: transform .2s var(--ease);
  flex-shrink: 0;
}
.cdocs-nav-toggle.open .cdocs-chevron { transform: rotate(90deg); }

.cdocs-nav-links {
  list-style: none;
  padding: 0 0 4px 0;
  margin: 0;
  display: none;
}
.cdocs-nav-links.open  { display: block; }
.cdocs-nav-flat        { display: block; } /* flat list always visible */

.cdocs-nav-links li a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px 7px 14px;
  font-size: .83rem;
  color: var(--text-3);
  border-radius: 6px;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: .15s;
  line-height: 1.35;
}
.cdocs-nav-links li a:hover {
  color: var(--purple);
  background: var(--purple-bg);
  border-left-color: var(--purple-muted);
}
.cdocs-nav-links li a.active {
  color: var(--purple);
  background: var(--purple-bg);
  border-left-color: var(--purple);
  font-weight: 600;
}
.cdocs-file-icon { font-size: .72rem; color: var(--text-4); flex-shrink: 0; }
.cdocs-nav-links li a.active .cdocs-file-icon { color: var(--purple); }

/* Mobile overlay */
.cdocs-sidebar-overlay { display: none; }


/* ── Main content ─────────────────────────────────────────────── */
.cdocs-main {
  min-width: 0;
  padding: 0 2.5rem 4rem;
  max-width: 760px;
}

.cdocs-topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}
.cdocs-menu-btn {
  display: none;
  width: 34px;
  height: 34px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-3);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  flex-shrink: 0;
  transition: .15s;
}
.cdocs-menu-btn:hover { background: var(--purple-bg); color: var(--purple); }

.cdocs-breadcrumb {
  display: flex;
  align-items: center;
  gap: 7px;
  flex-wrap: wrap;
  font-size: .79rem;
  color: var(--text-4);
}
.cdocs-breadcrumb a { color: var(--text-4); text-decoration: none; transition: color .15s; }
.cdocs-breadcrumb a:hover { color: var(--purple); }
.cdocs-breadcrumb i { font-size: .58rem; color: var(--border-2); }
.cdocs-breadcrumb span { color: var(--text-2); font-weight: 500; }

/* Article */
.cdocs-article { padding: 28px 0 0; }

.cdocs-cover {
  width: 100%;
  max-height: 340px;
  border-radius: var(--r-lg);
  overflow: hidden;
  margin-bottom: 1.75rem;
  border: 1px solid var(--border);
  box-shadow: var(--sh-card);
}
.cdocs-cover img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  display: block;
}

.cdocs-art-badges { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 14px; }
.cdocs-art-title {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 800;
  color: var(--text);
  line-height: 1.22;
  margin-bottom: 12px;
  letter-spacing: -.3px;
}
.cdocs-art-desc {
  font-size: 1.02rem;
  color: var(--text-2);
  line-height: 1.65;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

/* Prev / Next */
.cdocs-prevnext {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 2.5rem;
}
.cdocs-prev,
.cdocs-next {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 14px 16px;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: .15s;
}
.cdocs-next { text-align: right; }
.cdocs-prev:hover,
.cdocs-next:hover { border-color: var(--purple); box-shadow: 0 2px 12px rgba(109,40,217,.1); }
.cdocs-pn-label {
  font-size: .73rem;
  color: var(--text-4);
  display: flex;
  align-items: center;
  gap: 5px;
  font-weight: 600;
}
.cdocs-next .cdocs-pn-label { justify-content: flex-end; }
.cdocs-pn-title {
  font-size: .88rem;
  font-weight: 700;
  color: var(--purple);
  font-family: var(--font-display);
  line-height: 1.3;
}

/* ── Right TOC ────────────────────────────────────────────────── */
.cdocs-toc-panel {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  padding: 1.5rem 1rem 1.5rem 1.25rem;
  height: fit-content;
  max-height: calc(100vh - var(--nav-h) - 48px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  border-left: 1px solid var(--border);
}
.cdocs-toc-panel::-webkit-scrollbar { width: 3px; }

.cdocs-toc-heading {
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-4);
  margin-bottom: 12px;
}

.cdocs-toc-list ul { list-style: none; padding: 0; margin: 0; }
.cdocs-toc-list li a {
  display: block;
  padding: 4px 8px;
  font-size: .8rem;
  color: var(--text-4);
  text-decoration: none;
  border-left: 2px solid var(--border);
  transition: .15s;
  line-height: 1.4;
}
.cdocs-toc-list li a:hover { color: var(--purple); border-left-color: var(--purple-muted); }
.cdocs-toc-list li a.active { color: var(--purple); border-left-color: var(--purple); font-weight: 600; }
.cdocs-toc-list li.cdocs-toc-h3 a { padding-left: 18px; font-size: .77rem; }

.cdocs-toc-footer {
  margin-top: 24px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .cdocs-shell { grid-template-columns: 250px 1fr; }
  .cdocs-toc-panel { display: none; }
}

@media (max-width: 768px) {
  .cdocs-shell { grid-template-columns: 1fr; }

  .cdocs-main { padding: 0 18px 3rem; }

  .cdocs-menu-btn { display: flex; }

  /* Sidebar slides in from left on mobile */
  .cdocs-sidebar {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    bottom: 0;
    width: 280px;
    height: auto;
    z-index: 600;
    transform: translateX(-100%);
    transition: transform .28s var(--ease);
    box-shadow: 4px 0 24px rgba(0,0,0,.1);
  }
  .cdocs-sidebar.mobile-open { transform: translateX(0); }

  /* Overlay behind sidebar */
  .cdocs-sidebar-overlay {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 599;
    background: rgba(0,0,0,.4);
    opacity: 0;
    pointer-events: none;
    transition: opacity .28s;
  }
  .cdocs-sidebar.mobile-open .cdocs-sidebar-overlay {
    opacity: 1;
    pointer-events: auto;
  }

  .cdocs-prevnext { grid-template-columns: 1fr; }
  .cdocs-next { text-align: left; }
  .cdocs-next .cdocs-pn-label { justify-content: flex-start; }
}

@media (max-width: 640px) {
  .crs-grid { grid-template-columns: 1fr; }
}


/* ================================================================
   COURSES — Fixed Layout
   Paste this at the END of main.css
   ================================================================ */

/* ── Docs wrapper: 2-column only (sidebar + content) ─────────── */
.docs-wrapper {
  display: flex;
  min-height: calc(100vh - var(--nav-h));
  background: var(--bg);
  color: var(--text);
  align-items: flex-start;
}

/* ── LEFT SIDEBAR ─────────────────────────────────────────────── */
.docs-sidebar {
  width: 272px;
  min-width: 272px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 20px 16px 40px;
  overflow-y: auto;
  position: sticky;
  top: var(--nav-h);
  height: calc(100vh - var(--nav-h));
  flex-shrink: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.docs-sidebar::-webkit-scrollbar { width: 4px; }
.docs-sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }

.docs-back-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-3);
  text-decoration: none;
  margin-bottom: 14px;
  padding: 5px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  transition: var(--t);
}
.docs-back-link:hover { color: var(--purple); border-color: var(--purple-muted); background: var(--purple-bg); }

.docs-course-title {
  font-size: .85rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 14px;
  padding: 10px 12px;
  background: linear-gradient(135deg, var(--purple-bg), #ddd6fe);
  border-radius: var(--r);
  border-left: 3px solid var(--purple);
  line-height: 1.4;
}

/* Progress */
.docs-progress-box { margin-bottom: 14px; }
.docs-progress-label {
  display: flex;
  justify-content: space-between;
  font-size: .73rem;
  color: var(--text-3);
  font-weight: 600;
  margin-bottom: 6px;
}
.docs-progress-track {
  height: 6px;
  background: var(--surface-2);
  border-radius: 99px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.docs-progress-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--purple), var(--blue));
  border-radius: 99px;
  transition: width .4s ease;
}

/* Search */
.docs-search-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  margin-bottom: 16px;
}
.docs-search-wrap i { color: var(--text-4); font-size: .8rem; }
.docs-search-wrap input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: .82rem;
  color: var(--text);
  font-family: 'Inter', sans-serif;
}
.docs-search-wrap input::placeholder { color: var(--text-4); }

/* Module groups */
.docs-nav { display: flex; flex-direction: column; gap: 6px; }

.docs-nav-group { border-radius: var(--r); overflow: hidden; }

.docs-nav-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 12px;
  border-radius: var(--r);
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: .78rem;
  font-weight: 700;
  text-align: left;
  transition: var(--t);
  line-height: 1.4;
}
.docs-nav-toggle:hover { background: var(--purple-bg); color: var(--purple); border-color: var(--purple-muted); }
.docs-nav-toggle.expanded { background: var(--purple-bg); color: var(--purple); border-color: var(--purple-muted); }

.docs-nav-toggle-label { flex: 1; }

.docs-nav-chevron {
  font-size: .65rem;
  transition: transform .25s ease;
  flex-shrink: 0;
}
.docs-nav-toggle.expanded .docs-nav-chevron { transform: rotate(90deg); }

/* Lesson links */
.docs-nav-links {
  list-style: none;
  padding: 6px 0 6px 8px;
  margin: 0;
  display: none;
  border-left: 2px solid var(--purple-muted);
  margin-left: 10px;
}
.docs-nav-links.open { display: block; }

.docs-nav-links li { margin: 2px 0; }
.docs-nav-links a {
  display: block;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: .8rem;
  color: var(--text-3);
  text-decoration: none;
  transition: var(--t);
  border-left: 2px solid transparent;
  line-height: 1.4;
}
.docs-nav-links a:hover { color: var(--purple); background: var(--purple-bg); }
.docs-nav-links a.docs-nav-active {
  color: var(--purple);
  font-weight: 700;
  background: var(--purple-bg);
  border-left-color: var(--purple);
}

/* ── MAIN CONTENT (fills remaining width) ─────────────────────── */
.docs-main {
  flex: 1;
  min-width: 0;
  padding: 36px 48px 60px;
  max-width: 860px;
}

/* Cover image on lesson pages */
.docs-cover {
  width: 100%;
  max-height: 380px;
  overflow: hidden;
  border-radius: var(--r-lg);
  margin-bottom: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--sh-card);
}
.docs-cover img {
  width: 100%;
  height: 100%;
  max-height: 380px;
  object-fit: cover;
  display: block;
}

/* Badges */
.docs-badges { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 12px; }

/* Breadcrumb inside docs/course pages (light background) */
.docs-main .breadcrumb {
  color: var(--text-3);
  padding: 0 0 12px 0;
}
.docs-main .breadcrumb a { color: var(--text-3); }
.docs-main .breadcrumb a:hover { color: var(--purple); }
.docs-main .breadcrumb span { color: var(--text); }
.docs-main .breadcrumb-sep { color: var(--text-4); }


/* Lesson title */
.docs-lesson-title {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 800;
  color: var(--text);
  line-height: 1.25;
  margin-bottom: 12px;
  letter-spacing: -.3px;
}
.docs-lesson-desc {
  color: var(--text-2);
  font-size: 1rem;
  margin-bottom: 28px;
  line-height: 1.65;
  border-bottom: 1px solid var(--border);
  padding-bottom: 20px;
}

/* Prose override for docs */
.docs-prose { font-size: .97rem; }

/* Prev / Next */
.docs-prev-next {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.docs-prev, .docs-next {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  text-decoration: none;
  color: inherit;
  transition: var(--t);
  box-shadow: var(--sh-card);
}
.docs-prev:hover, .docs-next:hover { border-color: var(--purple); box-shadow: 0 4px 16px rgba(109,40,217,.12); }
.docs-next { text-align: right; }
.docs-pn-label { font-size: .72rem; color: var(--text-4); font-weight: 600; }
.docs-pn-title { font-size: .88rem; font-weight: 700; color: var(--text); font-family: var(--font-display); line-height: 1.35; }

/* ── COURSES LIST PAGE ────────────────────────────────────────── */
.courses-hero-section {
  background: linear-gradient(135deg, var(--purple) 0%, #4f46e5 55%, var(--cyan) 100%);
  padding: 60px 28px 52px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.courses-hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.courses-hero-section .wrap { position: relative; z-index: 1; }

.courses-hero-badge {
  display: inline-block;
  background: rgba(255,255,255,.2);
  color: #fff;
  border: 1px solid rgba(255,255,255,.35);
  padding: 5px 18px;
  border-radius: var(--r-pill);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.courses-hero-title {
  color: #fff;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -.4px;
}
.courses-hero-sub {
  color: rgba(255,255,255,.82);
  max-width: 540px;
  margin: 0 auto 28px;
  font-size: .97rem;
  line-height: 1.7;
}
.courses-search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  border-radius: var(--r);
  padding: 11px 20px;
  max-width: 440px;
  margin: 0 auto;
  box-shadow: 0 4px 20px rgba(0,0,0,.15);
}
.courses-search-bar i { color: var(--text-4); }
.courses-search-bar input {
  flex: 1;
  border: none;
  outline: none;
  font-family: 'Inter', sans-serif;
  font-size: .92rem;
  color: var(--text);
  background: transparent;
}
.courses-search-bar input::placeholder { color: var(--text-4); }

/* Course cards grid */
.courses-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.course-card-new {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition: .2s;
  box-shadow: var(--sh-card);
  animation: fadeUp .45s ease both;
}
.course-card-new:nth-child(1) { animation-delay: .05s; }
.course-card-new:nth-child(2) { animation-delay: .1s; }
.course-card-new:nth-child(3) { animation-delay: .15s; }
.course-card-new:nth-child(4) { animation-delay: .2s; }
.course-card-new:nth-child(5) { animation-delay: .25s; }
.course-card-new:nth-child(6) { animation-delay: .3s; }
.course-card-new:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(109,40,217,.13);
  border-color: var(--purple-muted);
}

/* Thumbnail */
.course-card-thumb {
  position: relative;
  width: 100%;
  height: 170px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--purple-bg) 0%, #ddd6fe 100%);
  flex-shrink: 0;
}
.course-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .35s ease;
}
.course-card-new:hover .course-card-thumb img { transform: scale(1.04); }

/* Icon placeholder when no image */
.course-card-thumb-icon {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  color: var(--purple);
  opacity: .55;
}

.course-card-level-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(0,0,0,.55);
  color: #fff;
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  backdrop-filter: blur(4px);
}

/* Card body */
.course-card-body {
  padding: 18px 20px 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.course-card-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.course-card-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  margin: 0;
}
.course-card-desc {
  font-size: .84rem;
  color: var(--text-3);
  line-height: 1.6;
  flex: 1;
  margin: 0;
}
.course-card-meta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: .75rem;
  color: var(--text-3);
  font-weight: 600;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}
.course-card-meta i { color: var(--aws); margin-right: 4px; }

/* Card footer */
.course-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}
.course-free-badge {
  font-size: .75rem;
  font-weight: 700;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 5px;
}
.course-start-link {
  font-size: .78rem;
  font-weight: 700;
  color: var(--purple);
  display: flex;
  align-items: center;
  gap: 5px;
  transition: gap .15s;
}
.course-card-new:hover .course-start-link { gap: 8px; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .docs-main { padding: 28px 32px 48px; }
}
@media (max-width: 900px) {
  .docs-sidebar { display: none; }
  .docs-main    { max-width: 100%; padding: 24px 20px 48px; }
  .courses-card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .docs-prev-next { grid-template-columns: 1fr; }
  .courses-card-grid { grid-template-columns: 1fr; }
  .courses-hero-section { padding: 44px 16px 36px; }
}

/* ── Home Courses Section ───────────────────────────────────── */
.home-courses-section {
  padding: 64px 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.hcc-count-label {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--text-4);
  margin-bottom: 20px;
}

.home-courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.home-course-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: .2s var(--ease);
  box-shadow: var(--sh-card);
}

.home-course-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,.1);
  border-color: var(--purple-muted);
}

/* Thumbnail area */
.hcc-thumb {
  height: 160px;
  background: color-mix(in srgb, var(--tc, #6d28d9) 12%, #f1f5f9);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hcc-thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.4) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.4) 1px, transparent 1px);
  background-size: 24px 24px;
}

.hcc-thumb-icon {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  background: rgba(255,255,255,.9);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  box-shadow: 0 4px 20px rgba(0,0,0,.12);
  position: relative;
  z-index: 1;
  transition: .2s;
}

.home-course-card:hover .hcc-thumb-icon {
  transform: scale(1.08);
}

.hcc-level-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(0,0,0,.55);
  color: #fff;
  font-size: .65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: 3px 9px;
  border-radius: var(--r-pill);
  backdrop-filter: blur(4px);
  z-index: 2;
}

/* Card body */
.hcc-body {
  padding: 18px 18px 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hcc-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.hcc-tag {
  background: var(--purple-bg);
  color: var(--purple);
  border: 1px solid var(--purple-muted);
  padding: 2px 9px;
  border-radius: var(--r-pill);
  font-size: .68rem;
  font-weight: 700;
}

.hcc-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  letter-spacing: -.2px;
}

.hcc-desc {
  font-size: .83rem;
  color: var(--text-3);
  line-height: 1.6;
  flex: 1;
}

.hcc-meta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: .77rem;
  color: var(--text-3);
  margin-top: 4px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
}

.hcc-meta i {
  color: var(--aws);
  margin-right: 4px;
}

/* Card footer */
.hcc-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}

.hcc-free {
  font-size: .8rem;
  font-weight: 700;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 5px;
}

.hcc-cta {
  font-size: .82rem;
  font-weight: 700;
  color: var(--purple);
  display: flex;
  align-items: center;
  gap: 5px;
  transition: .2s;
}

.home-course-card:hover .hcc-cta {
  gap: 8px;
}

/* Responsive */
@media (max-width: 900px) {
  .home-courses-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 580px) {
  .home-courses-grid { grid-template-columns: 1fr; }
}


/* Interview card accent override */
.hcc-interview .hcc-tag {
  background: var(--green-bg);
  color: var(--green);
  border-color: var(--green-border);
}
.hcc-interview:hover {
  border-color: var(--green-border);
}
.hcc-interview .hcc-cta {
  color: var(--green);
}


/* ================================================================
   INTERVIEW PREP — Docs-style sidebar layout + topic card grid
   Append these rules to the bottom of static/css/main.css
   ================================================================ */

/* ── Interview Prep: 2-column shell (sidebar + content) ──────── */
.idocs-shell {
  display: flex;
  min-height: calc(100vh - var(--nav-h));
  background: var(--bg);
  color: var(--text);
  align-items: flex-start;
}

/* ── Left Sidebar ─────────────────────────────────────────────── */
.idocs-sidebar {
  width: 260px;
  min-width: 260px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 0 0 2.5rem;
  overflow-y: auto;
  position: sticky;
  top: var(--nav-h);
  height: calc(100vh - var(--nav-h));
  flex-shrink: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.idocs-sidebar::-webkit-scrollbar { width: 4px; }
.idocs-sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }

.idocs-sidebar-top {
  padding: 16px 16px 14px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--surface);
  z-index: 2;
}

.idocs-back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .76rem;
  font-weight: 600;
  color: var(--text-3);
  text-decoration: none;
  margin-bottom: 10px;
  padding: 4px 9px;
  border-radius: 6px;
  border: 1px solid var(--border);
  transition: var(--t);
}
.idocs-back-link:hover { color: var(--purple); border-color: var(--purple-muted); background: var(--purple-bg); }

.idocs-course-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 12px;
}
.idocs-course-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .88rem;
  color: #fff;
  flex-shrink: 0;
}
.idocs-course-name {
  font-size: .88rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -.2px;
  line-height: 1.3;
}

/* Progress */
.idocs-progress-box { margin-bottom: 10px; }
.idocs-progress-label {
  display: flex;
  justify-content: space-between;
  font-size: .72rem;
  color: var(--text-3);
  font-weight: 600;
  margin-bottom: 5px;
}
.idocs-progress-track {
  height: 5px;
  background: var(--surface-2);
  border-radius: 99px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.idocs-progress-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--purple), var(--blue));
  border-radius: 99px;
  transition: width .4s ease;
}

/* Search */
.idocs-search-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 11px;
}
.idocs-search-wrap i { color: var(--text-4); font-size: .78rem; }
.idocs-search-wrap input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: .8rem;
  color: var(--text);
  font-family: 'Inter', sans-serif;
}
.idocs-search-wrap input::placeholder { color: var(--text-4); }

/* Nav links */
.idocs-nav {
  list-style: none;
  padding: 10px 10px 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.idocs-nav-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 7px;
  font-size: .81rem;
  color: var(--text-3);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: var(--t);
  line-height: 1.35;
}
.idocs-nav-link:hover { color: var(--purple); background: var(--purple-bg); border-left-color: var(--purple-muted); }
.idocs-nav-active {
  color: var(--purple);
  background: var(--purple-bg);
  border-left-color: var(--purple);
  font-weight: 700;
}

.idocs-file-icon { font-size: .72rem; color: var(--text-4); flex-shrink: 0; width: 14px; text-align: center; }
.idocs-nav-active .idocs-file-icon { color: var(--purple); }
.idocs-nav-label { flex: 1; }

.idocs-q-count {
  flex-shrink: 0;
  background: var(--purple-bg);
  color: var(--purple);
  border: 1px solid var(--purple-muted);
  border-radius: 99px;
  font-size: .66rem;
  font-weight: 700;
  padding: 1px 7px;
}

/* ── Main content ─────────────────────────────────────────────── */
.idocs-main {
  flex: 1;
  min-width: 0;
  padding: 0 48px 60px;
  max-width: 860px;
}

.idocs-topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0 0;
  margin-bottom: 8px;
}

.idocs-menu-btn {
  display: none;
  width: 34px;
  height: 34px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-3);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  flex-shrink: 0;
  transition: var(--t);
}
.idocs-menu-btn:hover { background: var(--purple-bg); color: var(--purple); }

/* Override breadcrumb colors inside docs main (light bg) */
.idocs-main .breadcrumb { color: var(--text-3); padding: 0; }
.idocs-main .breadcrumb a { color: var(--text-3); }
.idocs-main .breadcrumb a:hover { color: var(--purple); }
.idocs-main .breadcrumb span { color: var(--text); }
.idocs-main .breadcrumb-sep { color: var(--border-2); }

/* Article header */
.idocs-art-badges { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 12px; margin-top: 16px; }
.idocs-art-title {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 800;
  color: var(--text);
  line-height: 1.22;
  margin-bottom: 10px;
  letter-spacing: -.3px;
}
.idocs-art-desc {
  font-size: 1rem;
  color: var(--text-2);
  line-height: 1.65;
  margin-bottom: 12px;
}
.idocs-art-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: .82rem;
  color: var(--text-3);
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.idocs-art-meta i { color: var(--aws); margin-right: 4px; }

/* Prev/Next */
.idocs-prevnext {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.idocs-prev, .idocs-next {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  text-decoration: none;
  color: inherit;
  transition: var(--t);
  box-shadow: var(--sh-card);
}
.idocs-prev:hover, .idocs-next:hover { border-color: var(--purple); box-shadow: 0 4px 16px rgba(109,40,217,.12); }
.idocs-next { text-align: right; }
.idocs-pn-label { font-size: .72rem; color: var(--text-4); font-weight: 600; }
.idocs-pn-title  { font-size: .88rem; font-weight: 700; color: var(--text); line-height: 1.35; }

/* Mobile sidebar */
.idocs-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 598;
  background: rgba(0,0,0,.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity .28s;
}
.idocs-overlay-visible { opacity: 1 !important; pointer-events: auto !important; }

@media (max-width: 900px) {
  .idocs-main { padding: 0 24px 48px; max-width: 100%; }
  .idocs-menu-btn { display: flex; }
  .idocs-overlay { display: block; }
  .idocs-sidebar {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    bottom: 0;
    height: auto;
    z-index: 600;
    transform: translateX(-100%);
    transition: transform .28s var(--ease);
    box-shadow: 4px 0 24px rgba(0,0,0,.1);
  }
  .idocs-sidebar-open { transform: translateX(0) !important; }
  .idocs-prevnext { grid-template-columns: 1fr; }
  .idocs-next { text-align: left; }
}

/* ================================================================
   INTERVIEW PREP — Topic card grid (list page)
   ================================================================ */

.iprep-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.iprep-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  box-shadow: var(--sh-card);
  transition: .2s var(--ease);
  animation: fadeUp .45s ease both;
}
.iprep-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(109,40,217,.13);
  border-color: var(--purple-muted);
}

/* Thumbnail */
.iprep-thumb {
  position: relative;
  width: 100%;
  height: 160px;
  overflow: hidden;
  background: color-mix(in srgb, var(--tc, #6d28d9) 10%, var(--surface-2));
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.iprep-thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.45) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.45) 1px, transparent 1px);
  background-size: 24px 24px;
}
.iprep-thumb-icon {
  width: 68px;
  height: 68px;
  border-radius: 16px;
  background: rgba(255,255,255,.9);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.9rem;
  box-shadow: 0 4px 16px rgba(0,0,0,.1);
  position: relative;
  z-index: 1;
  transition: .2s;
}
.iprep-card:hover .iprep-thumb-icon { transform: scale(1.08); }

.iprep-level-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(0,0,0,.52);
  color: #fff;
  font-size: .65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: 3px 9px;
  border-radius: var(--r-pill);
  backdrop-filter: blur(4px);
  z-index: 2;
}

/* Card body */
.iprep-body {
  padding: 16px 18px 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.iprep-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  margin: 0;
}
.iprep-desc {
  font-size: .83rem;
  color: var(--text-3);
  line-height: 1.6;
  flex: 1;
  margin: 0;
}
.iprep-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  font-size: .75rem;
  color: var(--text-3);
  font-weight: 600;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}
.iprep-meta i { color: var(--aws); margin-right: 3px; }

/* Card footer */
.iprep-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 18px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}
.iprep-free {
  font-size: .75rem;
  font-weight: 700;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 5px;
}
.iprep-cta {
  font-size: .78rem;
  font-weight: 700;
  color: var(--purple);
  display: flex;
  align-items: center;
  gap: 5px;
  transition: .2s;
}
.iprep-card:hover .iprep-cta { gap: 8px; }

@media (max-width: 900px) { .iprep-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 580px) { .iprep-grid { grid-template-columns: 1fr; } }


/* ================================================================
   INTERVIEW PREP — iprep card grid  (append to bottom of main.css)
   ================================================================ */

.iprep-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 4px;
}

/* ── Card shell ── */
.iprep-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  box-shadow: var(--sh-card);
  transition: .2s var(--ease);
  animation: fadeUp .45s ease both;
}
.iprep-card:nth-child(1){animation-delay:.05s}
.iprep-card:nth-child(2){animation-delay:.10s}
.iprep-card:nth-child(3){animation-delay:.15s}
.iprep-card:nth-child(4){animation-delay:.20s}
.iprep-card:nth-child(5){animation-delay:.25s}
.iprep-card:nth-child(6){animation-delay:.30s}
.iprep-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(109,40,217,.13);
  border-color: var(--purple-muted);
}

/* ── Thumbnail ── */
.iprep-thumb {
  position: relative;
  width: 100%;
  height: 150px;
  overflow: hidden;
  background: color-mix(in srgb, var(--tc, #6d28d9) 10%, var(--surface-2));
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.iprep-thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.5) 1px, transparent 1px);
  background-size: 22px 22px;
}
.iprep-thumb-icon {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(255,255,255,.6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.85rem;
  box-shadow: 0 4px 16px rgba(0,0,0,.1);
  position: relative;
  z-index: 1;
  transition: .2s;
}
.iprep-card:hover .iprep-thumb-icon { transform: scale(1.08); }

.iprep-level-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(0,0,0,.52);
  color: #fff;
  font-size: .64rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: 3px 9px;
  border-radius: var(--r-pill);
  backdrop-filter: blur(4px);
  z-index: 2;
}

/* ── Body ── */
.iprep-body {
  padding: 16px 18px 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.iprep-title {
  font-size: .98rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  margin: 0;
}
.iprep-desc {
  font-size: .83rem;
  color: var(--text-3);
  line-height: 1.6;
  flex: 1;
  margin: 0;
}
.iprep-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  font-size: .75rem;
  color: var(--text-3);
  font-weight: 600;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}
.iprep-meta i { color: var(--aws); margin-right: 3px; }

/* ── Footer ── */
.iprep-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 18px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}
.iprep-free {
  font-size: .75rem;
  font-weight: 700;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 5px;
}
.iprep-cta {
  font-size: .78rem;
  font-weight: 700;
  color: var(--purple);
  display: flex;
  align-items: center;
  gap: 5px;
  transition: .2s;
}
.iprep-card:hover .iprep-cta { gap: 8px; }

/* ── Responsive ── */
@media (max-width: 900px)  { .iprep-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 580px)  { .iprep-grid { grid-template-columns: 1fr; } }


/* ================================================================
   INTERVIEW PREP — Group cards + Topic cards
   Append to bottom of static/css/main.css
   ================================================================ */

/* ── Group card grid (root /interview-questions/ page) ────────── */
.iprep-group-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 760px;
}

.iprep-group-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 24px 28px;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--sh-card);
  transition: .2s var(--ease);
  animation: fadeUp .4s ease both;
}
.iprep-group-card:nth-child(1) { animation-delay: .05s; }
.iprep-group-card:nth-child(2) { animation-delay: .12s; }
.iprep-group-card:nth-child(3) { animation-delay: .19s; }
.iprep-group-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(109,40,217,.12);
  border-color: var(--purple-muted);
}

.iprep-group-icon-wrap {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  background: color-mix(in srgb, var(--tc, #6d28d9) 10%, var(--surface-2));
  border: 1px solid color-mix(in srgb, var(--tc, #6d28d9) 25%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: .2s;
}
.iprep-group-card:hover .iprep-group-icon-wrap {
  background: color-mix(in srgb, var(--tc, #6d28d9) 16%, var(--surface-2));
}
.iprep-group-icon { font-size: 2rem; }

.iprep-group-body { flex: 1; min-width: 0; }
.iprep-group-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text);
  margin: 0 0 6px;
  letter-spacing: -.2px;
}
.iprep-group-desc {
  font-size: .86rem;
  color: var(--text-3);
  line-height: 1.6;
  margin: 0 0 10px;
}
.iprep-group-meta {
  display: flex;
  gap: 16px;
  font-size: .78rem;
  color: var(--text-4);
  font-weight: 600;
}
.iprep-group-meta i { color: var(--aws); margin-right: 4px; }

.iprep-group-arrow {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
  flex-shrink: 0;
  transition: .2s;
}
.iprep-group-card:hover .iprep-group-arrow {
  background: var(--purple-bg);
  border-color: var(--purple-muted);
  color: var(--purple);
  transform: translateX(3px);
}

@media (max-width: 640px) {
  .iprep-group-card { padding: 18px 16px; gap: 14px; }
  .iprep-group-icon-wrap { width: 56px; height: 56px; border-radius: 12px; }
  .iprep-group-icon { font-size: 1.5rem; }
  .iprep-group-title { font-size: 1rem; }
}

/* ── Topic card grid (group pages: /aws/, /devops/, /linux/) ───── */
.iprep-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 4px;
}

.iprep-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  box-shadow: var(--sh-card);
  transition: .2s var(--ease);
  animation: fadeUp .45s ease both;
}
.iprep-card:nth-child(1){animation-delay:.05s}
.iprep-card:nth-child(2){animation-delay:.10s}
.iprep-card:nth-child(3){animation-delay:.15s}
.iprep-card:nth-child(4){animation-delay:.20s}
.iprep-card:nth-child(5){animation-delay:.25s}
.iprep-card:nth-child(6){animation-delay:.30s}
.iprep-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(109,40,217,.13);
  border-color: var(--purple-muted);
}

.iprep-thumb {
  position: relative;
  width: 100%;
  height: 150px;
  overflow: hidden;
  background: color-mix(in srgb, var(--tc, #6d28d9) 10%, var(--surface-2));
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.iprep-thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.5) 1px, transparent 1px);
  background-size: 22px 22px;
}
.iprep-thumb-icon {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(255,255,255,.6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.85rem;
  box-shadow: 0 4px 16px rgba(0,0,0,.1);
  position: relative;
  z-index: 1;
  transition: .2s;
}
.iprep-card:hover .iprep-thumb-icon { transform: scale(1.08); }

.iprep-level-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(0,0,0,.52);
  color: #fff;
  font-size: .64rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: 3px 9px;
  border-radius: var(--r-pill);
  backdrop-filter: blur(4px);
  z-index: 2;
}

.iprep-body {
  padding: 16px 18px 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.iprep-title {
  font-size: .98rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  margin: 0;
}
.iprep-desc {
  font-size: .83rem;
  color: var(--text-3);
  line-height: 1.6;
  flex: 1;
  margin: 0;
}
.iprep-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  font-size: .75rem;
  color: var(--text-3);
  font-weight: 600;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}
.iprep-meta i { color: var(--aws); margin-right: 3px; }

.iprep-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 18px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}
.iprep-free {
  font-size: .75rem;
  font-weight: 700;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 5px;
}
.iprep-cta {
  font-size: .78rem;
  font-weight: 700;
  color: var(--purple);
  display: flex;
  align-items: center;
  gap: 5px;
  transition: .2s;
}
.iprep-card:hover .iprep-cta { gap: 8px; }

@media (max-width: 900px) { .iprep-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 580px) { .iprep-grid { grid-template-columns: 1fr; } }


/* ================================================================
   INTERVIEW PREP — Filter bar + dark scenario cards
   Append to bottom of static/css/main.css
   ================================================================ */

/* ── Hero ──────────────────────────────────────────────────────── */
.iprep-hero {
  background: linear-gradient(135deg, var(--purple) 0%, #4f46e5 55%, var(--cyan) 100%);
  padding: 56px 28px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.iprep-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.iprep-hero .wrap { position: relative; z-index: 1; }
.iprep-hero-badge {
  display: inline-block;
  background: rgba(255,255,255,.18);
  color: #fff;
  border: 1px solid rgba(255,255,255,.3);
  padding: 5px 16px;
  border-radius: var(--r-pill);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.iprep-hero-title {
  color: #fff;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -.4px;
}
.iprep-hero-sub {
  color: rgba(255,255,255,.82);
  max-width: 540px;
  margin: 0 auto;
  font-size: .97rem;
  line-height: 1.7;
}

/* ── Filter bar ────────────────────────────────────────────────── */
.iprep-filter-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 14px 20px;
  margin-bottom: 28px;
  box-shadow: var(--sh-card);
}

.iprep-filter-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.iprep-filter-label {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--text-4);
  white-space: nowrap;
}

.iprep-pills {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.iprep-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 14px;
  border-radius: var(--r-pill);
  font-size: .8rem;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-2);
  transition: var(--t);
  white-space: nowrap;
}
.iprep-pill:hover { border-color: var(--purple-muted); color: var(--purple); }
.iprep-pill.active {
  background: var(--purple);
  color: #fff;
  border-color: var(--purple);
}

.iprep-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dot-green  { background: #22c55e; }
.dot-yellow { background: #eab308; }
.dot-red    { background: #ef4444; }

.iprep-search-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 13px;
  margin-left: auto;
  min-width: 200px;
}
.iprep-search-wrap i { color: var(--text-4); font-size: .8rem; flex-shrink: 0; }
.iprep-search-wrap input {
  border: none;
  outline: none;
  background: transparent;
  font-size: .82rem;
  color: var(--text);
  font-family: 'Inter', sans-serif;
  width: 100%;
}
.iprep-search-wrap input::placeholder { color: var(--text-4); }

/* ── Cards grid ─────────────────────────────────────────────────── */
.iprep-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ── Scenario card ───────────────────────────────────────────────── */
.iprep-scenario-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  box-shadow: var(--sh-card);
  transition: .2s var(--ease);
  animation: fadeUp .4s ease both;
}
.iprep-scenario-card:nth-child(1){animation-delay:.04s}
.iprep-scenario-card:nth-child(2){animation-delay:.09s}
.iprep-scenario-card:nth-child(3){animation-delay:.14s}
.iprep-scenario-card:nth-child(4){animation-delay:.19s}
.iprep-scenario-card:nth-child(5){animation-delay:.24s}
.iprep-scenario-card:nth-child(6){animation-delay:.29s}
.iprep-scenario-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0,0,0,.13);
  border-color: rgba(255,255,255,.15);
}

/* Dark header with icon */
.iprep-card-header {
  position: relative;
  height: 148px;
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #1e3a5f 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}
.iprep-card-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 24px 24px;
}
.iprep-card-icon {
  font-size: 3rem;
  color: rgba(255,255,255,.25);
  position: relative;
  z-index: 1;
  transition: .2s;
}
.iprep-scenario-card:hover .iprep-card-icon {
  color: rgba(255,255,255,.4);
  transform: scale(1.08);
}

/* Level badge — top right of header */
.iprep-card-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  font-size: .65rem;
  font-weight: 800;
  letter-spacing: .06em;
  z-index: 2;
}
.iprep-card-badge.beginner,
.iprep-card-badge.all-levels {
  background: #dcfce7;
  color: #166534;
}
.iprep-card-badge.intermediate {
  background: #fef9c3;
  color: #854d0e;
}
.iprep-card-badge.advanced {
  background: #fee2e2;
  color: #991b1b;
}

/* Card body */
.iprep-card-body {
  padding: 18px 18px 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.iprep-card-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  margin: 0;
}
.iprep-card-desc {
  font-size: .84rem;
  color: var(--text-3);
  line-height: 1.6;
  flex: 1;
  margin: 0;
}
.iprep-card-meta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: .77rem;
  color: var(--text-3);
  font-weight: 600;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.iprep-card-meta i { color: var(--purple); margin-right: 4px; }

/* Card footer */
.iprep-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 18px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}
.iprep-card-free {
  font-size: .78rem;
  font-weight: 700;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 5px;
}
.iprep-card-cta {
  font-size: .8rem;
  font-weight: 700;
  color: var(--purple);
  display: flex;
  align-items: center;
  gap: 5px;
  transition: .2s;
}
.iprep-scenario-card:hover .iprep-card-cta { gap: 8px; }

/* Empty state */
.iprep-empty {
  text-align: center;
  padding: 4rem 0;
  color: var(--text-4);
}
.iprep-empty i { font-size: 2.5rem; margin-bottom: 1rem; opacity: .4; display: block; }
.iprep-empty p { font-size: .95rem; }

/* ── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .iprep-filter-bar { gap: 14px; }
  .iprep-search-wrap { margin-left: 0; }
}
@media (max-width: 900px) {
  .iprep-cards-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .iprep-cards-grid { grid-template-columns: 1fr; }
  .iprep-filter-bar { flex-direction: column; align-items: flex-start; }
  .iprep-search-wrap { width: 100%; }
}

/* ================================================================
   COURSE MODULE OVERVIEW  — append to bottom of main.css
   ================================================================ */

/* ── Course overview hero ──────────────────────────────────────── */
.crs-overview-hero {
  background: linear-gradient(135deg, var(--purple) 0%, #4f46e5 55%, var(--cyan) 100%);
  padding: 44px 28px 40px;
  position: relative;
  overflow: hidden;
}
.crs-overview-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.crs-overview-hero .wrap { position: relative; z-index: 1; }

.crs-overview-meta-top {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}
.crs-overview-icon {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  background: color-mix(in srgb, var(--tc, #6d28d9) 15%, rgba(255,255,255,.1));
  border: 1px solid rgba(255,255,255,.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  flex-shrink: 0;
  backdrop-filter: blur(8px);
}
.crs-overview-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: #fff;
  margin: 0 0 8px;
  letter-spacing: -.3px;
  line-height: 1.2;
}
.crs-overview-desc {
  color: rgba(255,255,255,.82);
  font-size: .95rem;
  line-height: 1.65;
  margin: 0 0 14px;
  max-width: 640px;
}
.crs-overview-stats {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: .84rem;
  color: rgba(255,255,255,.75);
  font-weight: 600;
}
.crs-overview-stats i { margin-right: 5px; }

/* ── Module card grid ──────────────────────────────────────────── */
.crs-module-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ── Module card ───────────────────────────────────────────────── */
.crs-module-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 22px 24px;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--sh-card);
  transition: .2s var(--ease);
  animation: fadeUp .4s ease both;
}
.crs-module-card:nth-child(1) { animation-delay: .04s; }
.crs-module-card:nth-child(2) { animation-delay: .09s; }
.crs-module-card:nth-child(3) { animation-delay: .14s; }
.crs-module-card:nth-child(4) { animation-delay: .19s; }
.crs-module-card:nth-child(5) { animation-delay: .24s; }
.crs-module-card:nth-child(6) { animation-delay: .29s; }
.crs-module-card:hover {
  transform: translateX(4px);
  box-shadow: 0 6px 24px rgba(109,40,217,.12);
  border-color: var(--purple-muted);
}

/* Number badge */
.crs-module-num {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--tc, #6d28d9) 12%, var(--surface-2));
  border: 1px solid color-mix(in srgb, var(--tc, #6d28d9) 25%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--tc, #6d28d9);
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.5px;
  transition: .2s;
}
.crs-module-card:hover .crs-module-num {
  background: color-mix(in srgb, var(--tc, #6d28d9) 20%, var(--surface-2));
}

/* Body */
.crs-module-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.crs-module-label {
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--purple);
}
.crs-module-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  margin: 0;
}
.crs-module-desc {
  font-size: .86rem;
  color: var(--text-3);
  line-height: 1.6;
  margin: 0;
}

/* Lesson pills inside card */
.crs-module-lessons {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}
.crs-module-lesson-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  font-size: .72rem;
  color: var(--text-3);
  font-weight: 500;
  white-space: nowrap;
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
}
.crs-module-lesson-pill i { font-size: .65rem; color: var(--text-4); flex-shrink: 0; }

/* Right column */
.crs-module-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-shrink: 0;
  align-self: stretch;
}
.crs-module-count {
  font-size: .78rem;
  font-weight: 700;
  color: var(--text-3);
  white-space: nowrap;
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: var(--r-pill);
}
.crs-module-arrow {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
  font-size: .85rem;
  transition: .2s;
}
.crs-module-card:hover .crs-module-arrow {
  background: var(--purple-bg);
  border-color: var(--purple-muted);
  color: var(--purple);
  transform: translateX(3px);
}

/* ── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .crs-overview-meta-top { flex-direction: column; gap: 14px; }
  .crs-overview-icon { width: 56px; height: 56px; font-size: 1.5rem; }
  .crs-module-card { padding: 16px; gap: 14px; flex-wrap: wrap; }
  .crs-module-right { flex-direction: row; align-self: auto; width: 100%; justify-content: space-between; }
  .crs-module-lessons { display: none; } /* hide pills on mobile to save space */
}

/* ── Course lesson breadcrumb bar ───────────────────────────── */
.docs-breadcrumb-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: .8rem;
  color: var(--text-4);
  padding: 18px 0 14px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.docs-breadcrumb-bar a {
  color: var(--text-3);
  text-decoration: none;
  font-weight: 500;
  transition: color .15s;
}
.docs-breadcrumb-bar a:hover { color: var(--purple); }
.docs-breadcrumb-bar i {
  font-size: .58rem;
  color: var(--border-2);
}
.docs-breadcrumb-bar span {
  color: var(--text);
  font-weight: 600;
}



/* ================================================================
   BLOG LIST PAGE — Scenario-style dark gradient cards
   Append to bottom of static/css/main.css
   ================================================================ */

/* ── Blog card grid (3 columns like scenarios) ──────────────── */
.blog-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 2rem;
}

/* ── Blog scenario-style card shell ─────────────────────────── */
.blog-sc-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  box-shadow: var(--sh-card);
  transition: .2s var(--ease);
  animation: fadeUp .4s ease both;
}
.blog-sc-card:nth-child(1){animation-delay:.04s}
.blog-sc-card:nth-child(2){animation-delay:.09s}
.blog-sc-card:nth-child(3){animation-delay:.14s}
.blog-sc-card:nth-child(4){animation-delay:.19s}
.blog-sc-card:nth-child(5){animation-delay:.24s}
.blog-sc-card:nth-child(6){animation-delay:.29s}
.blog-sc-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 32px rgba(0,0,0,.15);
  border-color: rgba(255,255,255,.12);
}

/* ── Dark gradient header ────────────────────────────────────── */
.blog-sc-header {
  position: relative;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

/* Subtle grid pattern overlay (matches scenario cards) */
.blog-sc-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* Big centered emoji */
.blog-sc-emoji {
  font-size: 3.2rem;
  position: relative;
  z-index: 1;
  transition: transform .2s ease;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,.3));
}
.blog-sc-card:hover .blog-sc-emoji {
  transform: scale(1.12);
}

/* Domain label pill — bottom left (like scenario "Kubernetes" label) */
.blog-sc-domain-label {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: rgba(0,0,0,.55);
  color: #fff;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .04em;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  backdrop-filter: blur(4px);
  z-index: 2;
}

/* ── Card body ──────────────────────────────────────────────── */
.blog-sc-body {
  padding: 18px 18px 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.blog-sc-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.35;
  margin: 0;
  letter-spacing: -.15px;
}

.blog-sc-desc {
  font-size: .84rem;
  color: var(--text-3);
  line-height: 1.6;
  flex: 1;
  margin: 0;
}

.blog-sc-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  font-size: .75rem;
  color: var(--text-3);
  font-weight: 600;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.blog-sc-meta i { color: var(--purple); margin-right: 3px; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .blog-card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 580px) {
  .blog-card-grid { grid-template-columns: 1fr; }
}


/* ================================================================
   HOME PAGE — Blog section cards
   Append to bottom of static/css/main.css
   ================================================================ */

.home-blog-section {
  padding: 64px 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.home-blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ── Card shell ── */
.home-blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  box-shadow: var(--sh-card);
  transition: .2s var(--ease);
  animation: fadeUp .4s ease both;
}
.home-blog-card:nth-child(1){animation-delay:.05s}
.home-blog-card:nth-child(2){animation-delay:.12s}
.home-blog-card:nth-child(3){animation-delay:.19s}
.home-blog-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 32px rgba(0,0,0,.13);
  border-color: var(--purple-muted);
}

/* ── Dark header ── */
.home-blog-header {
  position: relative;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}
.home-blog-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 24px 24px;
}
.home-blog-emoji {
  font-size: 3.2rem;
  position: relative;
  z-index: 1;
  transition: transform .2s ease;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,.3));
}
.home-blog-card:hover .home-blog-emoji { transform: scale(1.12); }

.home-blog-domain {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: rgba(0,0,0,.55);
  color: #fff;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .04em;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  backdrop-filter: blur(4px);
  z-index: 2;
}

/* ── Body ── */
.home-blog-body {
  padding: 18px 18px 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.home-blog-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.35;
  margin: 0;
}
.home-blog-desc {
  font-size: .84rem;
  color: var(--text-3);
  line-height: 1.6;
  flex: 1;
  margin: 0;
}
.home-blog-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  font-size: .75rem;
  color: var(--text-3);
  font-weight: 600;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.home-blog-meta i { color: var(--purple); margin-right: 3px; }

/* ── Responsive ── */
@media (max-width: 900px) { .home-blog-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 580px) { .home-blog-grid { grid-template-columns: 1fr; } }