/* ═══════════════════════════════════════════════════════════════════
   PJ Assistant — Case Técnico Documentation
   Premium dark theme · Minimal · Elegant
   ═══════════════════════════════════════════════════════════════════ */

:root {
  --bg:           #06090f;
  --bg-card:      #0c1219;
  --bg-elevated:  #131b27;
  --bg-section:   #080c14;
  --surface:      #1a2332;

  --text:         #cdd6e4;
  --text-muted:   #8494a7;
  --text-dim:     #596775;
  --white:        #f1f5f9;

  --primary:      #3b82f6;
  --primary-glow: rgba(59, 130, 246, 0.10);
  --accent-go:    #00ADD8;
  --accent-py:    #f7c948;
  --accent-ai:    #a78bfa;
  --accent-db:    #fb923c;
  --accent-obs:   #f87171;
  --accent-trace: #22d3ee;
  --accent-cloud: #a78bfa;
  --green:        #34d399;
  --yellow:       #fbbf24;

  --gradient-hero: linear-gradient(135deg, #3b82f6 0%, #a78bfa 50%, #22d3ee 100%);
  --gradient-card: linear-gradient(135deg, rgba(59,130,246,0.05) 0%, rgba(167,139,250,0.05) 100%);
  --gradient-ai:   linear-gradient(135deg, #a78bfa 0%, #818cf8 50%, #6366f1 100%);

  --border:       rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.12);

  --radius-sm:  0.375rem;
  --radius-md:  0.625rem;
  --radius-lg:  0.875rem;
  --radius-xl:  1rem;

  --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 60px rgba(59,130,246,0.06);

  --container-max: 1100px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
}

/* ── Reset ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 15px;
}

img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: #60a5fa; }

code {
  font-family: var(--font-mono);
  font-size: 0.83em;
  background: rgba(59,130,246,0.08);
  color: #93c5fd;
  padding: 0.12em 0.4em;
  border-radius: var(--radius-sm);
}

.container {
  width: min(100% - 2rem, var(--container-max));
  margin-inline: auto;
  padding-inline: 1rem;
}

/* ═══════════════════════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 9, 15, 0.82);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.75rem 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--gradient-hero);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.75rem;
  color: #fff;
  letter-spacing: -0.04em;
}

.logo-text {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--white);
  letter-spacing: -0.03em;
}

.nav-list {
  list-style: none;
  display: flex;
  gap: 0.15rem;
}

.nav-list a {
  display: block;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-md);
  color: var(--text-dim);
  font-size: 0.82rem;
  font-weight: 500;
  transition: all 0.2s;
  letter-spacing: -0.01em;
}

.nav-list a:hover,
.nav-list a.active {
  color: var(--white);
  background: var(--primary-glow);
}

/* ═══════════════════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  padding: 5.5rem 0 4rem;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59,130,246,0.08) 0%, rgba(167,139,250,0.04) 40%, transparent 65%);
  pointer-events: none;
}

.hero-label {
  display: inline-block;
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-dim);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(1.85rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.12;
  color: var(--white);
  letter-spacing: -0.04em;
  margin-bottom: 1.15rem;
}

.gradient-text {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 600px;
  margin: 0 auto 2.25rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid;
}

.badge-go    { color: var(--accent-go);    border-color: rgba(0,173,216,0.25);   background: rgba(0,173,216,0.06); }
.badge-py    { color: var(--accent-py);    border-color: rgba(247,201,72,0.25);  background: rgba(247,201,72,0.06); }
.badge-ai    { color: var(--accent-ai);    border-color: rgba(167,139,250,0.25); background: rgba(167,139,250,0.06); }
.badge-db    { color: var(--accent-db);    border-color: rgba(251,146,60,0.25);  background: rgba(251,146,60,0.06); }
.badge-obs   { color: var(--accent-obs);   border-color: rgba(248,113,113,0.25); background: rgba(248,113,113,0.06); }
.badge-trace { color: var(--accent-trace); border-color: rgba(34,211,238,0.25);  background: rgba(34,211,238,0.06); }
.badge-cloud { color: var(--accent-cloud); border-color: rgba(167,139,250,0.25); background: rgba(167,139,250,0.06); }

/* ═══════════════════════════════════════════════════════════════════
   SECTIONS
   ═══════════════════════════════════════════════════════════════════ */
.section { padding: 4.5rem 0; }
.section-dark { background: var(--bg-section); }

.section-title {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.03em;
  margin-bottom: 0.6rem;
  text-align: center;
}

.section-intro {
  text-align: center;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 2.75rem;
  font-size: 1rem;
  line-height: 1.7;
}

/* ═══════════════════════════════════════════════════════════════════
   CARDS GRID
   ═══════════════════════════════════════════════════════════════════ */
.cards-grid {
  display: grid;
  gap: 1rem;
}

.three-col { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.two-col   { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-hero);
  opacity: 0;
  transition: opacity 0.3s;
}

.card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
  transform: translateY(-1px);
}

.card:hover::before { opacity: 1; }

/* Card icon — CSS styled, no emoji */
.card-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  color: #fff;
}

.card-icon-go  { background: linear-gradient(135deg, #00ADD8, #007d9c); }
.card-icon-py  { background: linear-gradient(135deg, #a78bfa, #6366f1); }
.card-icon-web { background: linear-gradient(135deg, #22d3ee, #0891b2); }

.card h3 {
  color: var(--white);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.55rem;
  letter-spacing: -0.02em;
}

.card p {
  color: var(--text-muted);
  font-size: 0.87rem;
  line-height: 1.6;
  margin-bottom: 0.85rem;
}

.card-link {
  display: inline-flex;
  align-items: center;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--primary);
}

/* Card highlight for AI emphasis */
.card-highlight {
  border-color: rgba(167,139,250,0.2);
  background: linear-gradient(135deg, rgba(167,139,250,0.04) 0%, rgba(99,102,241,0.04) 100%);
}

.card-highlight::before {
  background: var(--gradient-ai);
  opacity: 1;
}

.card-go  { border-left: 2px solid var(--accent-go); }
.card-py  { border-left: 2px solid var(--accent-ai); }
.card-web { border-left: 2px solid var(--accent-trace); }

/* ═══════════════════════════════════════════════════════════════════
   STATS ROW
   ═══════════════════════════════════════════════════════════════════ */
.stats-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 3rem;
  padding: 1.5rem 0;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.25rem 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  min-width: 130px;
}

.stat-number {
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.3rem;
}

.stat-label {
  font-size: 0.72rem;
  color: var(--text-dim);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stats-disclaimer {
  margin-top: 1rem;
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.6;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.stats-disclaimer code {
  color: var(--text-muted);
  font-size: 0.74rem;
}

/* ═══════════════════════════════════════════════════════════════════
   ARCHITECTURE DIAGRAM + ZOOM
   ═══════════════════════════════════════════════════════════════════ */
.arch-diagram {
  background: linear-gradient(180deg, rgba(15,23,42,0.95) 0%, rgba(15,23,42,0.7) 100%);
  border: 1px solid rgba(71,85,105,0.35);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 4px 32px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.03);
  position: relative;
}

.arch-diagram-inner {
  overflow-x: auto;
  padding: 2.5rem 2rem;
}

.arch-diagram .mermaid {
  display: flex;
  justify-content: center;
  margin: 0;
}

.arch-diagram .mermaid svg {
  max-width: 100%;
  height: auto;
}

/* Modern node styling */
.arch-diagram .mermaid .node rect,
.arch-diagram .mermaid .node polygon,
.arch-diagram .mermaid .node circle {
  rx: 10;
  ry: 10;
}

.arch-diagram .mermaid .cluster rect {
  rx: 14 !important;
  ry: 14 !important;
}

.arch-diagram .mermaid .cluster-label { font-weight: 600; font-size: 0.7rem; letter-spacing: 0.06em; text-transform: uppercase; }
.arch-diagram .mermaid .nodeLabel { font-size: 0.8rem; line-height: 1.4; font-weight: 500; }
.arch-diagram .mermaid .edgeLabel { font-size: 0.72rem; font-weight: 500; }
.arch-diagram .mermaid .edgePath .path { stroke-width: 1.5px; }
.arch-diagram .mermaid .flowchart-link { stroke-width: 1.5px; }

/* Architecture section labels */
.arch-labels {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  padding-right: 3.5rem;
}

.arch-label {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.75rem;
  border-radius: 6px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  font-family: var(--font-mono);
}

.arch-label-bfa {
  background: rgba(0,173,216,0.1);
  color: #67e8f9;
  border: 1px solid rgba(0,173,216,0.2);
}

.arch-label-agent {
  background: rgba(167,139,250,0.1);
  color: #c4b5fd;
  border: 1px solid rgba(167,139,250,0.2);
}

/* Zoom button */
.zoom-btn {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(71,85,105,0.4);
  border-radius: 10px;
  background: rgba(15,23,42,0.8);
  backdrop-filter: blur(8px);
  color: #94a3b8;
  cursor: pointer;
  transition: all 0.2s;
}

.zoom-btn:hover {
  color: #f1f5f9;
  border-color: rgba(96,165,250,0.5);
  background: rgba(30,41,59,0.9);
  box-shadow: 0 0 12px rgba(96,165,250,0.15);
}

.zoom-btn svg {
  width: 16px;
  height: 16px;
}

/* Zoom overlay — fullscreen modern */
.zoom-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(2,6,14,0.96);
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}

.zoom-overlay.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.zoom-overlay .zoom-content {
  padding: 3rem;
  min-width: max(85vw, 1000px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.zoom-overlay .zoom-content svg {
  max-width: none;
  width: 100%;
  min-width: 1000px;
  height: auto;
  filter: brightness(1.08) contrast(1.02);
}

.zoom-close {
  position: fixed;
  top: 1.25rem;
  right: 1.5rem;
  z-index: 1001;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(30,41,59,0.85);
  backdrop-filter: blur(12px);
  color: #94a3b8;
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  font-family: var(--font-sans);
}

.zoom-close:hover {
  background: rgba(51,65,85,0.9);
  color: #f1f5f9;
  border-color: rgba(255,255,255,0.2);
}

/* ═══════════════════════════════════════════════════════════════════
   AI AGENT DEEP DIVE (highlighted section)
   ═══════════════════════════════════════════════════════════════════ */
.section-ai-highlight {
  background: linear-gradient(180deg, var(--bg-section) 0%, rgba(167,139,250,0.03) 50%, var(--bg-section) 100%);
  border-top: 1px solid rgba(167,139,250,0.1);
  border-bottom: 1px solid rgba(167,139,250,0.1);
}

.ai-hero-card {
  background: linear-gradient(135deg, rgba(167,139,250,0.06) 0%, rgba(99,102,241,0.06) 100%);
  border: 1px solid rgba(167,139,250,0.15);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
}

.ai-hero-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-ai);
}

.ai-hero-card h3 {
  color: var(--white);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.ai-hero-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 0;
}

.ai-feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.85rem;
}

.ai-feature {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.35rem;
  transition: border-color 0.2s;
}

.ai-feature:hover { border-color: rgba(167,139,250,0.2); }

.ai-feature-label {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-ai);
  margin-bottom: 0.5rem;
}

.ai-feature h4 {
  color: var(--white);
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  letter-spacing: -0.01em;
}

.ai-feature p {
  color: var(--text-muted);
  font-size: 0.82rem;
  line-height: 1.55;
  margin: 0;
}

/* ── Flow & Decision lists ──────────────────────────────────────── */
.flow-list {
  padding-left: 1.1rem;
  color: var(--text-muted);
  font-size: 0.87rem;
}

.flow-list li { margin-bottom: 0.45rem; padding-left: 0.25rem; }
.flow-list li::marker { color: var(--primary); font-weight: 700; }

.decision-list {
  list-style: none;
  padding: 0;
  color: var(--text-muted);
  font-size: 0.87rem;
}

.decision-list li {
  padding: 0.4rem 0 0.4rem 1.2rem;
  position: relative;
}

.decision-list li::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--accent-ai);
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

/* ═══════════════════════════════════════════════════════════════════
   CRITERIA BLOCKS
   ═══════════════════════════════════════════════════════════════════ */
.criteria-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  margin-bottom: 1.5rem;
  overflow: hidden;
  transition: border-color 0.3s;
}

.criteria-block:hover { border-color: var(--border-hover); }

.criteria-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--border);
  background: var(--gradient-card);
}

.criteria-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  background: var(--gradient-hero);
  color: #fff;
  font-weight: 800;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.criteria-number-ai { background: var(--gradient-ai); }

.criteria-header h3 {
  color: var(--white);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.1rem;
  letter-spacing: -0.01em;
}

.criteria-desc {
  color: var(--text-dim);
  font-size: 0.8rem;
  margin: 0;
}

.status-badge {
  margin-left: auto;
  flex-shrink: 0;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  white-space: nowrap;
}

.status-done {
  background: rgba(52,211,153,0.1);
  color: var(--green);
  border: 1px solid rgba(52,211,153,0.2);
}

/* ── Criteria Table ─────────────────────────────────────────────── */
.criteria-table-wrapper { overflow-x: auto; }

.criteria-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.criteria-table thead { background: rgba(26, 35, 50, 0.5); }

.criteria-table th {
  text-align: left;
  padding: 0.75rem 1.35rem;
  color: var(--text-dim);
  font-weight: 600;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--border);
}

.criteria-table td {
  padding: 0.8rem 1.35rem;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  color: var(--text-muted);
  vertical-align: top;
}

.criteria-table tbody tr:hover { background: rgba(59,130,246,0.02); }
.criteria-table tbody tr:last-child td { border-bottom: none; }
.criteria-table td:nth-child(2) { text-align: center; width: 55px; }

.check { color: var(--green); font-weight: 600; font-size: 0.85rem; }
.pending { color: var(--text-dim); font-size: 0.85rem; }
.row-pending td { opacity: 0.5; }

/* ═══════════════════════════════════════════════════════════════════
   CODE DETAILS (Expandable)
   ═══════════════════════════════════════════════════════════════════ */
.code-details { border-top: 1px solid var(--border); }

.code-details summary {
  padding: 0.75rem 1.75rem;
  cursor: pointer;
  color: var(--text-dim);
  font-size: 0.8rem;
  font-weight: 500;
  transition: all 0.2s;
  user-select: none;
}

.code-details summary:hover { color: var(--white); background: rgba(59,130,246,0.03); }

.code-details[open] summary {
  border-bottom: 1px solid var(--border);
  color: var(--primary);
}

.code-block {
  margin: 0;
  padding: 1.35rem 1.75rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.65;
  color: #b8c5d6;
  background: rgba(6, 9, 15, 0.5);
}

.code-comment { color: #4a5568; }
.code-keyword { color: #b794f4; }
.code-fn      { color: #63b3ed; }
.code-string  { color: #68d391; }

/* ═══════════════════════════════════════════════════════════════════
   REPO CARDS
   ═══════════════════════════════════════════════════════════════════ */
.repo-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  text-decoration: none;
  transition: all 0.3s ease;
}

.repo-card:hover {
  border-color: rgba(59,130,246,0.3);
  box-shadow: 0 0 40px rgba(59,130,246,0.08);
  transform: translateY(-2px);
  color: var(--text);
}

.repo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.75rem;
  margin-bottom: 0.85rem;
  color: #fff;
}

.repo-icon-go  { background: linear-gradient(135deg, #00ADD8, #007d9c); }
.repo-icon-ai  { background: var(--gradient-ai); }
.repo-icon-doc { background: linear-gradient(135deg, #3b82f6, #2563eb); }

.repo-card h3 {
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  font-family: var(--font-mono);
  letter-spacing: -0.01em;
}

.repo-card p {
  color: var(--text-muted);
  font-size: 0.82rem;
  margin-bottom: 1rem;
  line-height: 1.5;
}

.repo-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.repo-stack span {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-dim);
  font-size: 0.68rem;
  font-weight: 500;
}

/* ═══════════════════════════════════════════════════════════════════
   TRADEOFF / PROD LISTS
   ═══════════════════════════════════════════════════════════════════ */
.tradeoff-list, .prod-list { list-style: none; padding: 0; }

.tradeoff-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  font-size: 0.87rem;
  color: var(--text);
}

.tradeoff-list li:last-child { border-bottom: none; }

.tradeoff-reason {
  display: block;
  color: var(--text-dim);
  font-size: 0.8rem;
  margin-top: 0.15rem;
}

.prod-list li {
  padding: 0.5rem 0;
  font-size: 0.87rem;
  color: var(--text-muted);
}

.prod-list li strong { color: var(--text); }

/* ═══════════════════════════════════════════════════════════════════
   EXPERIENCE SECTION
   ═══════════════════════════════════════════════════════════════════ */
.exp-overview {
  max-width: 720px;
  margin: 0 auto;
}

.exp-overview h3 {
  font-size: 1.15rem;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.exp-overview p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0.5rem;
}

.exp-overview p strong {
  color: var(--text);
}

/* Experience cards */
.exp-card {
  text-align: center;
  padding: 2rem 1.5rem;
}

.exp-card h3 {
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}

.exp-card-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.15);
  color: #60a5fa;
}

.exp-card-icon svg {
  width: 22px;
  height: 22px;
}

.exp-card-icon-tools {
  background: rgba(251,191,36,0.1);
  border-color: rgba(251,191,36,0.15);
  color: #fbbf24;
}

.exp-card-icon-chat {
  background: rgba(167,139,250,0.1);
  border-color: rgba(167,139,250,0.15);
  color: #a78bfa;
}

/* How to test */
.exp-howto {
  margin-top: 2.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 2rem;
}

.exp-howto h3 {
  font-size: 1.05rem;
  color: var(--white);
  margin-bottom: 1.25rem;
  text-align: center;
}

.exp-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.exp-step {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.exp-step-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--gradient-hero);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.exp-step strong {
  display: block;
  color: var(--white);
  font-size: 0.85rem;
  margin-bottom: 0.2rem;
}

.exp-step p {
  color: var(--text-dim);
  font-size: 0.78rem;
  line-height: 1.45;
  margin: 0;
}

/* Example prompts */
.exp-prompts {
  margin-top: 2rem;
  text-align: center;
}

.exp-prompts h4 {
  font-size: 0.82rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  margin-bottom: 1rem;
}

.exp-prompts-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.exp-prompt {
  display: inline-block;
  padding: 0.45rem 0.9rem;
  border-radius: 20px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-style: italic;
  transition: all 0.2s;
}

.exp-prompt:hover {
  border-color: var(--border-hover);
  color: var(--text);
}

/* ═══════════════════════════════════════════════════════════════════
   SETUP CARDS
   ═══════════════════════════════════════════════════════════════════ */
.setup-card h3 { margin-bottom: 1rem; }

.setup-prereq {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}

.setup-list {
  list-style: none;
  padding: 0;
  font-size: 0.85rem;
  color: var(--text);
}

.setup-list li {
  padding: 0.25rem 0;
  padding-left: 1rem;
  position: relative;
}

.setup-list li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

.setup-note {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.code-block-sm {
  font-size: 0.75rem !important;
  padding: 0.65rem 0.85rem !important;
  margin: 0.5rem 0;
}

/* ═══════════════════════════════════════════════════════════════════
   GLOSSARY
   ═══════════════════════════════════════════════════════════════════ */
.glossary-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 1rem;
}

.glossary-group {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
}

.glossary-group-title {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.glossary-dl {
  display: grid;
  gap: 0;
}

.glossary-dl dt {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--white);
  margin-top: 0.75rem;
  font-family: var(--font-mono);
}

.glossary-dl dd {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0.15rem 0 0 0;
}

/* ═══════════════════════════════════════════════════════════════════
   MISC ADDITIONS
   ═══════════════════════════════════════════════════════════════════ */
.card-note {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

.future-category {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-ai);
  margin-top: 1.25rem;
  margin-bottom: 0.4rem;
}

.future-category:first-of-type {
  margin-top: 0;
}

.four-col {
  grid-template-columns: repeat(4, 1fr);
}

.workflow-diagram {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 1rem;
}

/* ═══════════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════════ */
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-inner p { color: var(--text-dim); font-size: 0.82rem; margin: 0; }
.footer-sub { margin-top: 0.2rem !important; }

/* ═══════════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    gap: 0.6rem;
    padding: 0.6rem 1rem;
  }

  .nav-list a { padding: 0.3rem 0.55rem; font-size: 0.75rem; }
  .hero { padding: 3rem 0 2rem; }
  .hero-title { font-size: 1.6rem; }
  .section { padding: 2.5rem 0; }

  .criteria-header {
    flex-wrap: wrap;
    padding: 1rem;
    gap: 0.65rem;
  }

  .criteria-number { width: 2.2rem; height: 2.2rem; font-size: 0.8rem; }
  .criteria-table th, .criteria-table td { padding: 0.65rem 0.85rem; font-size: 0.78rem; }
  .stat-item { padding: 0.85rem 1rem; min-width: 100px; }
  .stat-number { font-size: 1.35rem; }
  .arch-diagram-inner { padding: 1rem; }
  .code-block { font-size: 0.7rem; padding: 0.85rem 1rem; }
  .ai-hero-card { padding: 1.5rem; }
  .ai-feature { padding: 1rem; }
  .exp-steps { grid-template-columns: 1fr 1fr; }
  .glossary-grid { grid-template-columns: 1fr; }
  .four-col { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .container { padding-inline: 0.6rem; }
  .cards-grid { grid-template-columns: 1fr; }
  .badge { font-size: 0.65rem; padding: 0.18rem 0.5rem; }
  .card { padding: 1.25rem; }
  .ai-feature-grid { grid-template-columns: 1fr; }
  .exp-steps { grid-template-columns: 1fr; }
  .four-col { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════════════════════════ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeInUp 0.5s ease forwards;
  opacity: 0;
}

.fade-in-delay-1 { animation-delay: 0.1s; }
.fade-in-delay-2 { animation-delay: 0.15s; }
.fade-in-delay-3 { animation-delay: 0.2s; }