/* ==========================================================================
   AI Code Review Agent — GitHub Pages Blog
   Design system + components + animations + responsive
   ========================================================================== */

/* ---------- Reset & Base ---------- */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

/* ---------- Design Tokens ---------- */

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #141420;
  --bg-card: #1a1a2e;
  --bg-card-hover: #1e1e35;
  --bg-glass: rgba(26, 26, 46, 0.6);
  --bg-glass-strong: rgba(26, 26, 46, 0.85);

  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --border-accent: rgba(108, 92, 231, 0.3);

  --text-primary: #e8e8ed;
  --text-secondary: #8888a0;
  --text-muted: #5a5a72;

  --accent-purple: #6c5ce7;
  --accent-blue: #4da8ff;
  --accent-green: #00d68f;
  --accent-orange: #ffaa5c;
  --accent-red: #ff6b6b;
  --accent-gradient: linear-gradient(135deg, #6c5ce7 0%, #4da8ff 100%);
  --accent-gradient-text: linear-gradient(135deg, #6c5ce7 0%, #4da8ff 50%, #00d68f 100%);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(108, 92, 231, 0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

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

  --max-width: 1100px;
  --nav-height: 64px;
}

/* ---------- Light Theme Overrides ---------- */

[data-theme="light"] {
  --bg-primary: #f5f5f8;
  --bg-secondary: #eaeaf0;
  --bg-card: #ffffff;
  --bg-card-hover: #f0f0f8;
  --bg-glass: rgba(255, 255, 255, 0.7);
  --bg-glass-strong: rgba(245, 245, 248, 0.92);

  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.16);
  --border-accent: rgba(108, 92, 231, 0.3);

  --text-primary: #111118;
  --text-secondary: #555568;
  --text-muted: #9090a8;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.14);
  --shadow-glow: 0 0 40px rgba(108, 92, 231, 0.1);
}

[data-theme="light"] ::-webkit-scrollbar-thumb { background: rgba(0, 0, 0, 0.12); }
[data-theme="light"] ::-webkit-scrollbar-thumb:hover { background: rgba(0, 0, 0, 0.2); }

[data-theme="light"] pre[class*="language-"] {
  background: #f0f0f8 !important;
  border-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] :not(pre) > code {
  background: rgba(108, 92, 231, 0.08);
}

[data-theme="light"] .pipeline-group {
  background: rgba(108, 92, 231, 0.04);
  border-color: rgba(108, 92, 231, 0.15);
}

[data-theme="light"] .pipeline-group-label {
  background: var(--bg-secondary);
}

[data-theme="light"] .hero-orb {
  opacity: 0.15;
}

[data-theme="light"] .hero h1 {
  background: linear-gradient(135deg, #5a4bc7 0%, #3a8fe8 50%, #00a870 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background var(--transition-normal), color var(--transition-normal);
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-purple);
}

img {
  max-width: 100%;
}

/* ---------- Scrollbar ---------- */

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.08); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.14); }

/* ---------- Container ---------- */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Section ---------- */

.section {
  padding: 100px 0;
  position: relative;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-purple);
  margin-bottom: 16px;
}

.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: 1px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 650px;
  line-height: 1.7;
  margin-bottom: 48px;
}

/* ---------- Navigation ---------- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: background var(--transition-normal), box-shadow var(--transition-normal);
}

.nav.scrolled {
  background: var(--bg-glass-strong);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border-subtle);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: 1px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  padding-right: 16px;
}

.nav-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-social-link:hover {
  color: var(--text-primary);
  background: var(--border-subtle);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: none;
  background: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast);
  flex-shrink: 0;
}

.theme-toggle:hover {
  color: var(--text-primary);
  background: var(--border-subtle);
}

.theme-icon-sun { display: none; }
.theme-icon-moon { display: block; }

[data-theme="light"] .theme-icon-sun { display: block; }
[data-theme="light"] .theme-icon-moon { display: none; }

/* ---------- Scroll to Top ---------- */

.scroll-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 900;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--accent-gradient);
  border: none;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity var(--transition-normal), transform var(--transition-normal), box-shadow var(--transition-fast);
}

.scroll-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.scroll-to-top:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav-hamburger span {
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.nav-hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Hero ---------- */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
}

.hero-orb-1 {
  width: 500px;
  height: 500px;
  background: var(--accent-purple);
  top: -100px;
  right: -100px;
  animation: float-1 20s ease-in-out infinite;
}

.hero-orb-2 {
  width: 400px;
  height: 400px;
  background: var(--accent-blue);
  bottom: -80px;
  left: -80px;
  animation: float-2 25s ease-in-out infinite;
}

.hero-orb-3 {
  width: 300px;
  height: 300px;
  background: var(--accent-green);
  top: 40%;
  left: 50%;
  animation: float-3 30s ease-in-out infinite;
  opacity: 0.15;
}

@keyframes float-1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-60px, 40px) scale(1.05); }
  66% { transform: translate(30px, -30px) scale(0.95); }
}

@keyframes float-2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(50px, -50px) scale(1.08); }
  66% { transform: translate(-40px, 20px) scale(0.92); }
}

@keyframes float-3 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-80px, -40px); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(108, 92, 231, 0.12);
  border: 1px solid rgba(108, 92, 231, 0.25);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-purple);
  margin-bottom: 24px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
  background: var(--accent-gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 640px;
  margin: 0 auto 36px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(108, 92, 231, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(108, 92, 231, 0.4);
  color: #fff;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
  color: var(--text-primary);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.stat-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 24px;
  text-align: center;
  min-width: 140px;
}

.stat-value {
  font-size: 1.4rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ---------- Glass Card ---------- */

.glass-card {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

/* ---------- Architecture Pipeline ---------- */

.pipeline-diagram {
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  padding: 40px 0;
  margin-bottom: 40px;
}

.pipeline-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  min-width: 120px;
  flex-shrink: 0;
}

.pipeline-node-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  text-align: center;
  font-size: 0.82rem;
  font-weight: 600;
  font-family: var(--font-mono);
  white-space: nowrap;
  transition: all var(--transition-normal);
  position: relative;
}

.pipeline-node-box:hover {
  border-color: var(--accent-purple);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.pipeline-node-desc {
  font-size: 0.7rem;
  color: var(--text-muted);
  max-width: 110px;
  text-align: center;
  line-height: 1.4;
}

.pipeline-arrow {
  width: 40px;
  height: 2px;
  background: var(--accent-gradient);
  flex-shrink: 0;
  position: relative;
  opacity: 0.5;
}

.pipeline-arrow::after {
  content: '';
  position: absolute;
  right: -1px;
  top: -4px;
  width: 0;
  height: 0;
  border-left: 6px solid var(--accent-blue);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}

.pipeline-arrow-dashed {
  border-top: 2px dashed var(--accent-green);
  background: none;
  opacity: 0.4;
}

.pipeline-arrow-dashed::after {
  border-left-color: var(--accent-green);
}

.pipeline-group {
  background: rgba(108, 92, 231, 0.06);
  border: 1px dashed rgba(108, 92, 231, 0.2);
  border-radius: var(--radius-lg);
  padding: 24px 16px;
  display: flex;
  align-items: center;
  gap: 0;
  position: relative;
}

.pipeline-group-label {
  position: absolute;
  top: -10px;
  left: 20px;
  background: var(--bg-primary);
  padding: 0 10px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent-purple);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.pipeline-section-alt .pipeline-group-label {
  background: var(--bg-secondary);
}

/* ---------- Node Cards (How it works) ---------- */

.node-cards {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.node-card {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  align-items: start;
}

.node-card-header {
  position: sticky;
  top: calc(var(--nav-height) + 20px);
}

.node-number {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent-purple);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.node-name {
  font-size: 1.2rem;
  font-weight: 700;
  font-family: var(--font-mono);
  margin-bottom: 8px;
}

.node-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.node-card-body pre {
  margin: 0;
  border-radius: var(--radius-md);
  font-size: 0.82rem !important;
}

/* ---------- Code Blocks ---------- */

pre[class*="language-"] {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md) !important;
  padding: 24px !important;
  font-size: 0.82rem !important;
  line-height: 1.7 !important;
  overflow-x: auto;
}

code[class*="language-"] {
  font-family: var(--font-mono) !important;
  font-size: 0.82rem !important;
}

:not(pre) > code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: rgba(108, 92, 231, 0.12);
  color: var(--accent-blue);
  padding: 2px 7px;
  border-radius: 4px;
}

.code-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

/* ---------- Metrics (Evaluation) ---------- */

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition-normal);
}

.metric-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.metric-gauge {
  width: 100px;
  height: 100px;
  margin: 0 auto 16px;
  position: relative;
}

.metric-gauge canvas {
  width: 100% !important;
  height: 100% !important;
}

.metric-gauge-value {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
}

.metric-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.chart-container {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 40px;
}

.chart-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 24px;
}

/* ---------- Benchmark Table ---------- */

.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

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

.benchmark-table th {
  background: var(--bg-card);
  padding: 14px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.benchmark-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.benchmark-table tr:last-child td {
  border-bottom: none;
}

.benchmark-table tr:hover td {
  background: rgba(108, 92, 231, 0.04);
}

.benchmark-table .mono {
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
}

.badge-green { background: rgba(0, 214, 143, 0.12); color: var(--accent-green); }
.badge-orange { background: rgba(255, 170, 92, 0.12); color: var(--accent-orange); }
.badge-red { background: rgba(255, 107, 107, 0.12); color: var(--accent-red); }

/* ---------- Limitation Cards ---------- */

.limitations-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.limitation-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  border-left: 3px solid var(--accent-orange);
  transition: all var(--transition-normal);
}

.limitation-card:hover {
  border-color: var(--border-hover);
  border-left-color: var(--accent-orange);
}

.limitation-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.limitation-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- Tech Stack ---------- */

.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.tech-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tech-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.tech-card-name {
  font-size: 0.95rem;
  font-weight: 700;
}

.tech-card-purpose {
  font-size: 0.78rem;
  color: var(--accent-purple);
  font-weight: 500;
}

.tech-card-why {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ---------- CI/CD Flow ---------- */

.cicd-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.cicd-step {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 500;
  white-space: nowrap;
}

.cicd-arrow {
  color: var(--text-muted);
  font-size: 1.2rem;
}

/* ---------- Footer ---------- */

.footer {
  padding: 48px 0;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-credit {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---------- Callout ---------- */

.callout {
  background: rgba(108, 92, 231, 0.06);
  border: 1px solid rgba(108, 92, 231, 0.15);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 24px 0;
}

.callout-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-purple);
  margin-bottom: 8px;
}

.callout p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- Cost Badge ---------- */

.cost-badge {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 12px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 24px;
}

.cost-badge span {
  color: var(--text-primary);
  font-weight: 600;
  font-family: var(--font-mono);
}

/* ---------- Scroll Animations ---------- */

[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

[data-animate="fade-up"].visible {
  transform: translateY(0);
}

[data-animate="fade-left"] {
  transform: translateX(-30px);
}

[data-animate="fade-left"].visible {
  transform: translateX(0);
}

[data-animate="fade-right"] {
  transform: translateX(30px);
}

[data-animate="fade-right"].visible {
  transform: translateX(0);
}

[data-animate="scale"] {
  transform: scale(0.95);
}

[data-animate="scale"].visible {
  transform: scale(1);
}

/* ---------- Responsive: Tablet ---------- */

@media (max-width: 1024px) {
  .section { padding: 72px 0; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .node-card { grid-template-columns: 1fr; }
  .node-card-header { position: static; }
}

/* ---------- Responsive: Mobile ---------- */

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .container { padding: 0 16px; }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-glass-strong);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border-subtle);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-hamburger {
    display: flex;
  }

  .nav-actions {
    padding-right: 8px;
    gap: 4px;
  }

  .scroll-to-top {
    bottom: 20px;
    right: 20px;
  }

  .hero h1 { font-size: 2.2rem; }
  .hero-stats { gap: 12px; }
  .stat-card { min-width: 120px; padding: 12px 16px; }
  .stat-value { font-size: 1.1rem; }

  .pipeline-diagram {
    flex-direction: column;
    align-items: stretch;
  }

  .pipeline-group {
    flex-direction: column;
  }

  .pipeline-arrow {
    width: 2px;
    height: 30px;
    margin: 0 auto;
  }

  .pipeline-arrow::after {
    right: auto;
    bottom: -1px;
    top: auto;
    left: -4px;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid var(--accent-blue);
    border-bottom: none;
  }

  .metrics-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .charts-row { grid-template-columns: 1fr !important; }
  .limitations-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr; }

  .glass-card { padding: 20px; }
  .cicd-flow { flex-direction: column; }
  .cicd-arrow { transform: rotate(90deg); }
}