/* ============================================================
   SAAS THEME — Design System
   ============================================================ */

/* ── 1. CSS Custom Properties ─────────────────────────────── */
:root {
  /* Brand colors */
  --color-primary:       #6366f1;
  --color-primary-dark:  #4f46e5;
  --color-primary-light: #818cf8;
  --color-secondary:     #8b5cf6;
  --color-accent:        #06b6d4;

  /* Gradient */
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --gradient-text:    linear-gradient(135deg, #6366f1 0%, #a78bfa 50%, #06b6d4 100%);
  --gradient-glow:    radial-gradient(ellipse at center, rgba(99,102,241,0.3) 0%, transparent 70%);

  /* Neutral palette (light mode) */
  --color-bg:           #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-tertiary:  #f1f5f9;
  --color-surface:      #ffffff;
  --color-surface-2:    #f8fafc;
  --color-border:       #e2e8f0;
  --color-border-light: #f1f5f9;

  /* Text */
  --color-text:         #0f172a;
  --color-text-muted:   #64748b;
  --color-text-subtle:  #94a3b8;
  --color-text-inverse: #ffffff;

  /* Status colors */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error:   #ef4444;
  --color-info:    #06b6d4;

  /* Code */
  --color-code-bg:   #0f172a;
  --color-code-text: #e2e8f0;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px rgba(0,0,0,0.1), 0 10px 10px rgba(0,0,0,0.04);
  --shadow-2xl: 0 25px 50px rgba(0,0,0,0.15);
  --shadow-glow: 0 0 40px rgba(99,102,241,0.25);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

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

  /* Radius */
  --radius-sm:   0.375rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.75rem;
  --radius-xl:   1rem;
  --radius-2xl:  1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   200ms ease;
  --transition-slow:   300ms ease;

  /* Layout */
  --nav-height:       64px;
  --sidebar-width:    260px;
  --toc-width:        220px;
  --container-max:    1280px;
  --content-max:      720px;
}

/* Dark mode */
[data-theme="dark"] {
  --color-bg:           #0a0a0f;
  --color-bg-secondary: #0f0f1a;
  --color-bg-tertiary:  #1a1a2e;
  --color-surface:      #12121f;
  --color-surface-2:    #1a1a2e;
  --color-border:       #1e1e3a;
  --color-border-light: #16162a;

  --color-text:         #f1f5f9;
  --color-text-muted:   #94a3b8;
  --color-text-subtle:  #64748b;

  --color-code-bg:   #0d0d1a;
  --color-code-text: #e2e8f0;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4), 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.3), 0 2px 4px rgba(0,0,0,0.2);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.4), 0 4px 6px rgba(0,0,0,0.2);
  --shadow-xl: 0 20px 25px rgba(0,0,0,0.4), 0 10px 10px rgba(0,0,0,0.2);
  --shadow-glow: 0 0 60px rgba(99,102,241,0.2);
}

/* ── 2. Reset & Base ──────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-slow), color var(--transition-slow);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-primary-dark); }

img, svg { display: block; max-width: 100%; }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol { list-style: none; }

/* ── 3. Utilities ─────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

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

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 9999;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: var(--space-4); }

/* ── 4. Buttons ───────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.625rem 1.25rem;
  background: var(--gradient-primary);
  color: white;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  box-shadow: 0 4px 14px rgba(99,102,241,0.4);
  white-space: nowrap;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99,102,241,0.5);
  color: white;
}
.btn-primary:active { transform: translateY(0); }

.btn-primary.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  border-radius: var(--radius-xl);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.625rem 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-lg);
  border: 1.5px solid var(--color-border);
  background: transparent;
  transition: all var(--transition-base);
}
.btn-ghost:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
  background: rgba(99,102,241,0.05);
}
.btn-ghost.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  border-radius: var(--radius-xl);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.625rem 1.25rem;
  color: white;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-lg);
  border: 1.5px solid rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(8px);
  transition: all var(--transition-base);
}
.btn-outline:hover {
  border-color: rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.2);
  color: white;
}
.btn-outline.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  border-radius: var(--radius-xl);
}

/* ── 5. Navigation ────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(var(--color-bg), 0.85);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-slow), border-color var(--transition-slow);
}

/* Solid bg on scroll */
.site-header.scrolled {
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
}

.site-nav { height: 100%; }

.nav-container {
  display: flex;
  align-items: center;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
  gap: var(--space-8);
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}
.nav-logo:hover { color: var(--color-text); }

.logo-mark { flex-shrink: 0; }
.logo-text { color: var(--color-text); }

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}
.nav-link:hover, .nav-link.active {
  color: var(--color-text);
  background: var(--color-bg-tertiary);
}

/* Dropdown */
.nav-item-dropdown { position: relative; }

.nav-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}
.nav-dropdown-trigger:hover {
  color: var(--color-text);
  background: var(--color-bg-tertiary);
}
.dropdown-arrow {
  transition: transform var(--transition-fast);
}
.nav-item-dropdown.open .dropdown-arrow {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  min-width: 200px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-base);
  z-index: 200;
}
.nav-item-dropdown.open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-item {
  display: block;
  padding: var(--space-2) var(--space-3);
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}
.nav-dropdown-item:hover, .nav-dropdown-item.active {
  color: var(--color-primary);
  background: rgba(99,102,241,0.08);
}

/* Nav actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-left: auto;
}

.nav-btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}
.nav-btn-ghost:hover {
  color: var(--color-text);
  background: var(--color-bg-tertiary);
}

.nav-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.5rem 1rem;
  background: var(--gradient-primary);
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  box-shadow: 0 2px 8px rgba(99,102,241,0.35);
}
.nav-btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(99,102,241,0.5);
  color: white;
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-bg-tertiary);
}
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun  { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

/* Mobile hamburger */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}
.mobile-menu-btn:hover { background: var(--color-bg-tertiary); }
.hamburger-line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text-muted);
  border-radius: 2px;
  transition: all var(--transition-base);
}
.mobile-menu-btn.open .hamburger-line:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-btn.open .hamburger-line:nth-child(2) { opacity: 0; }
.mobile-menu-btn.open .hamburger-line:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: 99;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--transition-slow);
}
.mobile-menu.open {
  transform: translateX(0);
}
.mobile-menu-inner {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.mobile-nav-section { margin-bottom: var(--space-4); }
.mobile-nav-section-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
  padding: var(--space-2) var(--space-3);
  margin-bottom: var(--space-1);
}
.mobile-nav-link {
  display: block;
  padding: var(--space-3) var(--space-3);
  color: var(--color-text-muted);
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}
.mobile-nav-link:hover, .mobile-nav-link.active {
  color: var(--color-primary);
  background: rgba(99,102,241,0.08);
}
.mobile-nav-actions {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}
.full-width { width: 100%; justify-content: center; }

/* ── 6. Hero Section ──────────────────────────────────────── */
.hero-section {
  position: relative;
  overflow: hidden;
  padding: var(--space-24) 0 var(--space-20);
  background: var(--color-bg);
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99,102,241,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 0%, black 40%, transparent 100%);
}

.hero-bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.hero-glow-1 {
  width: 600px;
  height: 600px;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(99,102,241,0.15) 0%, transparent 70%);
}
.hero-glow-2 {
  width: 400px;
  height: 400px;
  top: 100px;
  right: 5%;
  background: radial-gradient(circle, rgba(139,92,246,0.1) 0%, transparent 70%);
}

.hero-section .container {
  position: relative;
}

/* Two-column hero layout */
.hero-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.hero-copy { max-width: 560px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(99,102,241,0.08);
  border: 1px solid rgba(99,102,241,0.2);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}
.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.2);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(99,102,241,0.2); }
  50%       { box-shadow: 0 0 0 6px rgba(99,102,241,0.05); }
}
.badge-link {
  color: var(--color-primary);
  font-weight: 500;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
  max-width: 480px;
}

/* Hero feature checklist */
.hero-features-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.hero-features-list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}
.check-icon {
  flex-shrink: 0;
  color: var(--color-primary);
  stroke: var(--color-primary);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: 0;
}

.hero-social-proof {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.avatar-stack {
  display: flex;
  align-items: center;
}
.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: white;
  margin-left: -8px;
}
.avatar:first-child { margin-left: 0; }
.social-proof-text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ── Visual placeholder ──────────────────────────────────── */
.hero-visual-placeholder {
  position: relative;
  border-radius: var(--radius-2xl);
  border: 2px dashed var(--color-border);
  background: var(--color-bg-secondary);
  min-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: border-color var(--transition-base);
}
.hero-visual-placeholder:hover {
  border-color: var(--color-primary-light);
}
.visual-placeholder-inner {
  text-align: center;
  padding: var(--space-10);
  pointer-events: none;
}
.visual-placeholder-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  border-radius: var(--radius-2xl);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  color: var(--color-text-subtle);
  margin-bottom: var(--space-5);
}
.visual-placeholder-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}
.visual-placeholder-hint {
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
  line-height: 1.6;
}
.visual-placeholder-hint code {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1px 6px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--color-primary);
}
/* Corner accent decorations */
.corner {
  position: absolute;
  width: 16px;
  height: 16px;
  border-color: var(--color-primary);
  border-style: solid;
  opacity: 0.5;
}
.corner-tl { top: 12px; left: 12px;  border-width: 2px 0 0 2px; border-radius: 3px 0 0 0; }
.corner-tr { top: 12px; right: 12px; border-width: 2px 2px 0 0; border-radius: 0 3px 0 0; }
.corner-bl { bottom: 12px; left: 12px;  border-width: 0 0 2px 2px; border-radius: 0 0 0 3px; }
.corner-br { bottom: 12px; right: 12px; border-width: 0 2px 2px 0; border-radius: 0 0 3px 0; }

/* When a real image/video is placed inside the placeholder */
.hero-visual-placeholder img,
.hero-visual-placeholder video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: calc(var(--radius-2xl) - 2px);
  display: block;
}

/* Code window (kept for potential use elsewhere) */
.hero-visual {
  position: relative;
}

.code-window {
  background: var(--color-code-bg);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl), var(--shadow-glow);
  border: 1px solid rgba(255,255,255,0.06);
}

.code-window-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.window-dots { display: flex; gap: var(--space-2); }
.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot-red    { background: #ff5f57; }
.dot-yellow { background: #ffbd2e; }
.dot-green  { background: #28c840; }

.window-title {
  flex: 1;
  text-align: center;
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.4);
  font-family: var(--font-mono);
}

.copy-btn {
  color: rgba(255,255,255,0.4);
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}
.copy-btn:hover { color: rgba(255,255,255,0.8); }

.code-window-body { padding: var(--space-6); }

.code-block {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--color-code-text);
  white-space: pre;
  overflow-x: auto;
}

.code-comment { color: #64748b; }
.code-prompt  { color: #6366f1; user-select: none; }
.code-cmd     { color: #a78bfa; }
.code-arg     { color: #34d399; }
.code-op      { color: #f472b6; }
.code-output  { color: #10b981; }

/* Floating stat cards */
.stat-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(8px);
  animation: float 3s ease-in-out infinite;
}
.stat-card-1 {
  bottom: -16px;
  left: -24px;
  animation-delay: 0s;
}
.stat-card-2 {
  top: -16px;
  right: -24px;
  animation-delay: 1.5s;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}
.stat-icon { font-size: 1.5rem; }
.stat-value { font-size: 1rem; font-weight: 700; color: var(--color-text); }
.stat-label { font-size: 0.75rem; color: var(--color-text-muted); }

/* ── 7. What's New Section ────────────────────────────────── */
.whats-new-section {
  padding: var(--space-24) 0;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
}

.whats-new-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-16);
}

.whats-new-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: var(--space-5);
}

/* Featured release card spans full width */
.release-card-featured {
  grid-column: span 2;
}

.release-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.release-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(99,102,241,0.08);
  transform: translateY(-2px);
}
.release-card-featured {
  background: linear-gradient(135deg, rgba(99,102,241,0.05) 0%, rgba(139,92,246,0.05) 100%);
  border-color: rgba(99,102,241,0.2);
}

.release-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.release-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.release-tag-major  { background: rgba(99,102,241,0.12); color: var(--color-primary); }
.release-tag-minor  { background: rgba(16,185,129,0.12);  color: var(--color-success); }
.release-tag-patch  { background: rgba(249,115,22,0.12);  color: #f97316; }

.release-date {
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
}

.release-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  line-height: 1.35;
  margin: 0;
}

.release-desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin: 0;
}

.release-changes {
  padding-left: var(--space-5);
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.release-changes li {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.release-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: auto;
  transition: gap var(--transition-fast);
}
.release-link:hover { gap: var(--space-3); }

.whats-new-footer {
  text-align: center;
  margin-top: var(--space-10);
}

/* ── Explore Section ──────────────────────────────────────── */
.explore-section {
  padding: var(--space-24) 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.explore-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.explore-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  text-decoration: none;
  transition: all var(--transition-base);
}
.explore-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(99,102,241,0.08);
  transform: translateY(-2px);
  background: var(--color-surface);
}

.explore-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  flex-shrink: 0;
}
.explore-icon-purple { background: rgba(99,102,241,0.12); color: var(--color-primary); }
.explore-icon-blue   { background: rgba(59,130,246,0.12);  color: #3b82f6; }
.explore-icon-green  { background: rgba(16,185,129,0.12);  color: var(--color-success); }
.explore-icon-orange { background: rgba(249,115,22,0.12);  color: #f97316; }
.explore-icon-pink   { background: rgba(236,72,153,0.12);  color: #ec4899; }
.explore-icon-indigo { background: rgba(99,102,241,0.12);  color: var(--color-primary); }

.explore-body { flex: 1; min-width: 0; }
.explore-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-1);
  letter-spacing: -0.01em;
}
.explore-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin: 0;
}
.explore-arrow {
  flex-shrink: 0;
  color: var(--color-text-subtle);
  transition: transform var(--transition-fast), color var(--transition-fast);
}
.explore-card:hover .explore-arrow {
  transform: translateX(4px);
  color: var(--color-primary);
}

/* ── 8. Section Shared ────────────────────────────────────── */
/* (logos-section removed — replaced by whats-new + explore) */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-16);
}
.section-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-4);
  background: rgba(99,102,241,0.1);
  color: var(--color-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}
.section-title {
  font-size: clamp(1.875rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}
.section-subtitle {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ── 9. Features Section (kept for optional use) ─────────── */
.features-section {
  padding: var(--space-24) 0;
  background: var(--color-bg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: var(--space-5);
}

.feature-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
}
.feature-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(99,102,241,0.1);
  transform: translateY(-2px);
}

.feature-card-large {
  grid-column: span 2;
  background: linear-gradient(135deg, rgba(99,102,241,0.06) 0%, rgba(139,92,246,0.06) 100%);
  border-color: rgba(99,102,241,0.2);
}

.feature-icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-5);
}
.feature-icon-purple { background: rgba(99,102,241,0.12); color: var(--color-primary); }
.feature-icon-blue   { background: rgba(59,130,246,0.12); color: #3b82f6; }
.feature-icon-green  { background: rgba(16,185,129,0.12); color: var(--color-success); }
.feature-icon-orange { background: rgba(249,115,22,0.12); color: #f97316; }
.feature-icon-pink   { background: rgba(236,72,153,0.12); color: #ec4899; }

.feature-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}
.feature-desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}
.feature-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-5);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: gap var(--transition-fast);
}
.feature-link:hover { gap: var(--space-3); }

.feature-card-cta {
  background: var(--gradient-primary);
  border-color: transparent;
  color: white;
}
.feature-card-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(99,102,241,0.4);
  border-color: transparent;
}
.feature-cta-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: white;
  margin-bottom: var(--space-3);
}
.feature-cta-desc {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: var(--space-6);
  line-height: 1.6;
}
.feature-card-cta .btn-primary {
  background: white;
  color: var(--color-primary-dark);
  box-shadow: 0 4px 14px rgba(0,0,0,0.2);
}
.feature-card-cta .btn-primary:hover {
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

/* ── 10. Stats Section (kept for optional use) ───────────── */
.stats-section {
  padding: var(--space-20) 0;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  text-align: center;
}
.stat-number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: var(--space-2);
}
.stat-desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ── 11. Testimonials (kept for optional use) ─────────────── */
.testimonials-section {
  padding: var(--space-24) 0;
  background: var(--color-bg);
}
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  align-items: start;
}
.testimonial-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
}
.testimonial-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.testimonial-card-featured {
  background: linear-gradient(135deg, rgba(99,102,241,0.06) 0%, rgba(139,92,246,0.06) 100%);
  border-color: rgba(99,102,241,0.2);
  transform: translateY(-8px);
}
.testimonial-card-featured:hover { transform: translateY(-10px); }

.testimonial-stars {
  color: #f59e0b;
  font-size: 1rem;
  letter-spacing: 2px;
  margin-bottom: var(--space-4);
}
.testimonial-quote {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}
.testimonial-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}
.testimonial-role {
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
}

/* ── 12. CTA Section (kept for optional use) ─────────────── */
.cta-section {
  padding: var(--space-24) 0;
  background: var(--color-bg-secondary);
}
.cta-card {
  position: relative;
  overflow: hidden;
  background: var(--gradient-primary);
  border-radius: var(--radius-2xl);
  padding: var(--space-20) var(--space-12);
  text-align: center;
}
.cta-glow {
  position: absolute;
  inset: -50%;
  background: radial-gradient(ellipse at center, rgba(255,255,255,0.15) 0%, transparent 60%);
  pointer-events: none;
}
.cta-content { position: relative; z-index: 1; }
.cta-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  color: white;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
}
.cta-subtitle {
  font-size: 1.0625rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: var(--space-8);
}
.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.cta-card .btn-primary {
  background: white;
  color: var(--color-primary-dark);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.cta-card .btn-primary:hover {
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

/* ── 13. Home content (markdown) ──────────────────────────── */
.home-content {
  padding: var(--space-16) 0;
}

/* ── 14. Docs Layout ──────────────────────────────────────── */
.docs-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr var(--toc-width);
  min-height: calc(100vh - var(--nav-height));
  max-width: var(--container-max);
  margin: 0 auto;
}

/* Sidebar */
.docs-sidebar {
  position: sticky;
  top: var(--nav-height);
  height: calc(100vh - var(--nav-height));
  overflow-y: auto;
  border-right: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}
.docs-sidebar::-webkit-scrollbar { width: 4px; }
.docs-sidebar::-webkit-scrollbar-track { background: transparent; }
.docs-sidebar::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 2px; }

.sidebar-inner { padding: var(--space-6) var(--space-4); }

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}
.sidebar-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
}
.sidebar-close {
  display: none;
  color: var(--color-text-muted);
  padding: var(--space-1);
  border-radius: var(--radius-sm);
}
.sidebar-close:hover { color: var(--color-text); background: var(--color-bg-tertiary); }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 49;
  backdrop-filter: blur(4px);
}

/* Nav tree */
.nav-section { margin-bottom: var(--space-6); }
.nav-section-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
  padding: var(--space-1) var(--space-3);
  margin-bottom: var(--space-2);
}
.nav-list { display: flex; flex-direction: column; gap: 2px; }
.nav-link {
  display: block;
  padding: var(--space-2) var(--space-3);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  line-height: 1.4;
}
.nav-link:hover { color: var(--color-text); background: var(--color-bg-tertiary); }
.nav-link.current {
  color: var(--color-primary);
  background: rgba(99,102,241,0.08);
  font-weight: 600;
}

.nav-group-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
}
.nav-sublist { padding-left: var(--space-4); }

/* Main docs area */
.docs-main {
  min-width: 0;
  padding: var(--space-10) var(--space-10);
}

.docs-content { max-width: var(--content-max); }

/* Breadcrumbs */
.breadcrumbs { margin-bottom: var(--space-6); }
.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--color-text-subtle);
  flex-wrap: wrap;
}
.breadcrumb-list li + li::before {
  content: '/';
  margin-right: var(--space-2);
  color: var(--color-border);
}
.breadcrumb-list a { color: var(--color-text-muted); }
.breadcrumb-list a:hover { color: var(--color-primary); }

/* Article */
.article-header { margin-bottom: var(--space-8); }
.article-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}
.article-description {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Page nav */
.page-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}
.page-nav-link {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  color: var(--color-text);
  transition: all var(--transition-base);
}
.page-nav-link:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  color: var(--color-text);
}
.page-nav-next { text-align: right; }
.page-nav-label {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
}
.page-nav-next .page-nav-label { justify-content: flex-end; }
.page-nav-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary);
}

/* Table of Contents */
.docs-toc {
  position: sticky;
  top: var(--nav-height);
  height: calc(100vh - var(--nav-height));
  overflow-y: auto;
  border-left: 1px solid var(--color-border);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}
.docs-toc::-webkit-scrollbar { width: 4px; }
.docs-toc::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 2px; }

.toc-inner { padding: var(--space-8) var(--space-5); }
.toc-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
  margin-bottom: var(--space-4);
}
.toc-list { display: flex; flex-direction: column; gap: 2px; }
.toc-link {
  display: block;
  padding: var(--space-1) var(--space-2);
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: all var(--transition-fast);
  line-height: 1.5;
}
.toc-link:hover { color: var(--color-text); border-left-color: var(--color-border); }
.toc-link.active { color: var(--color-primary); border-left-color: var(--color-primary); }
.toc-sublist { padding-left: var(--space-3); margin-top: 2px; }
.toc-link-sub { font-size: 0.8rem; }

/* ── 15. Markdown Content Styles ──────────────────────────── */
.md-content {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text);
}

.md-content h1,
.md-content h2,
.md-content h3,
.md-content h4,
.md-content h5,
.md-content h6 {
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--color-text);
  margin-top: 2em;
  margin-bottom: 0.75em;
  scroll-margin-top: calc(var(--nav-height) + 1rem);
}
.md-content h1 { font-size: 2rem; font-weight: 800; letter-spacing: -0.03em; }
.md-content h2 { font-size: 1.5rem; padding-bottom: 0.5em; border-bottom: 1px solid var(--color-border); }
.md-content h3 { font-size: 1.25rem; }
.md-content h4 { font-size: 1.0625rem; }
.md-content h5, .md-content h6 { font-size: 0.9375rem; }

.md-content p { margin-bottom: 1.25em; }

.md-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-color: rgba(99,102,241,0.3);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--transition-fast);
}
.md-content a:hover { text-decoration-color: var(--color-primary); }

.md-content strong { font-weight: 700; color: var(--color-text); }
.md-content em { font-style: italic; }

.md-content ul,
.md-content ol {
  padding-left: 1.5em;
  margin-bottom: 1.25em;
}
.md-content ul { list-style: disc; }
.md-content ol { list-style: decimal; }
.md-content li { margin-bottom: 0.4em; }
.md-content li > ul, .md-content li > ol { margin-top: 0.4em; margin-bottom: 0; }

.md-content blockquote {
  margin: 1.5em 0;
  padding: 1em 1.25em;
  border-left: 4px solid var(--color-primary);
  background: rgba(99,102,241,0.05);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text-muted);
  font-style: italic;
}
.md-content blockquote p:last-child { margin-bottom: 0; }

.md-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg-tertiary);
  color: var(--color-primary);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.md-content pre {
  margin: 1.5em 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.md-content pre code {
  display: block;
  padding: 1.25em 1.5em;
  background: var(--color-code-bg);
  color: var(--color-code-text);
  font-size: 0.875rem;
  line-height: 1.7;
  overflow-x: auto;
  border: none;
  border-radius: 0;
}

.md-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 0.9375rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.md-content th {
  background: var(--color-bg-tertiary);
  font-weight: 600;
  text-align: left;
  padding: 0.75em 1em;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}
.md-content td {
  padding: 0.75em 1em;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-muted);
}
.md-content tr:last-child td { border-bottom: none; }
.md-content tr:hover td { background: var(--color-bg-secondary); }

.md-content img {
  max-width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  margin: 1.5em 0;
}

.md-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2em 0;
}

/* Admonitions */
.md-content .admonition,
.md-content .note,
.md-content .warning,
.md-content .tip,
.md-content .danger {
  padding: 1em 1.25em;
  border-radius: var(--radius-lg);
  margin: 1.5em 0;
  border-left: 4px solid;
}
.md-content .note    { background: rgba(6,182,212,0.08);  border-color: var(--color-info);    }
.md-content .warning { background: rgba(245,158,11,0.08); border-color: var(--color-warning); }
.md-content .tip     { background: rgba(16,185,129,0.08); border-color: var(--color-success); }
.md-content .danger  { background: rgba(239,68,68,0.08);  border-color: var(--color-error);   }

/* ── 16. Error Page ───────────────────────────────────────── */
.error-layout {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--nav-height) - 200px);
  padding: var(--space-16) var(--space-6);
}
.error-content { text-align: center; max-width: 480px; }
.error-code {
  font-size: clamp(5rem, 15vw, 9rem);
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 1;
  margin-bottom: var(--space-4);
}
.error-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}
.error-desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  line-height: 1.6;
}
.error-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* ── 17. Footer ───────────────────────────────────────────── */
.site-footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-16) 0 var(--space-8);
}
.footer-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.footer-top {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-16);
  margin-bottom: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--color-border);
}
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.0625rem;
  margin-bottom: var(--space-4);
}
.footer-logo:hover { color: var(--color-text); }
.footer-tagline {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-6);
}
.footer-social {
  display: flex;
  gap: var(--space-3);
}
.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--color-text-muted);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}
.social-link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: rgba(99,102,241,0.08);
}

.footer-nav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-8);
}
.footer-nav-heading {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}
.footer-nav-list { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-nav-link {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}
.footer-nav-link:hover { color: var(--color-primary); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.footer-copyright {
  font-size: 0.875rem;
  color: var(--color-text-subtle);
}
.footer-bottom-links {
  display: flex;
  gap: var(--space-6);
}
.footer-bottom-link {
  font-size: 0.875rem;
  color: var(--color-text-subtle);
  transition: color var(--transition-fast);
}
.footer-bottom-link:hover { color: var(--color-text-muted); }

/* ── 18. Layout wrapper ───────────────────────────────────── */
.layout-wrapper { min-height: calc(100vh - var(--nav-height)); }

/* ── 19. Responsive ───────────────────────────────────────── */
@media (max-width: 1200px) {
  .docs-layout {
    grid-template-columns: var(--sidebar-width) 1fr;
  }
  .docs-toc { display: none; }
}

@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-copy { max-width: 100%; }
  .hero-subtitle { max-width: 100%; }
  .hero-actions { justify-content: center; }
  .hero-features-list { align-items: center; }
  .hero-visual-placeholder { display: none; }

  .whats-new-grid { grid-template-columns: 1fr; }
  .release-card-featured { grid-column: span 1; }

  .explore-grid { grid-template-columns: repeat(2, 1fr); }

  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-card-large { grid-column: span 2; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }

  .testimonials-grid { grid-template-columns: 1fr; }
  .testimonial-card-featured { transform: none; }
  .testimonial-card-featured:hover { transform: translateY(-2px); }

  .footer-top { grid-template-columns: 1fr; gap: var(--space-10); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-actions .nav-btn-primary,
  .nav-actions .nav-btn-ghost,
  .nav-actions .theme-toggle { display: none; }
  .mobile-menu-btn { display: flex; }
  .mobile-menu { display: block; }

  .docs-layout { grid-template-columns: 1fr; }
  .docs-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px;
    height: 100vh;
    z-index: 50;
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
    border-right: 1px solid var(--color-border);
    box-shadow: var(--shadow-2xl);
  }
  .docs-sidebar.open { transform: translateX(0); }
  .sidebar-overlay.active { display: block; }
  .sidebar-close { display: flex; }

  .docs-main { padding: var(--space-6) var(--space-5); }

  .explore-grid { grid-template-columns: 1fr; }
  .whats-new-grid { grid-template-columns: 1fr; }
  .release-card-featured { grid-column: span 1; }

  .features-grid { grid-template-columns: 1fr; }
  .feature-card-large { grid-column: span 1; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }

  .page-nav { grid-template-columns: 1fr; }

  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .footer-bottom-links { flex-wrap: wrap; gap: var(--space-4); }

  .cta-card { padding: var(--space-12) var(--space-6); }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2.25rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn-primary,
  .hero-actions .btn-ghost { justify-content: center; }
  .hero-features-list { align-items: flex-start; }

  .stats-grid { grid-template-columns: 1fr 1fr; }

  .cta-actions { flex-direction: column; }
  .cta-actions .btn-primary,
  .cta-actions .btn-outline { justify-content: center; }

  .footer-nav-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── 20. Scrollbar ────────────────────────────────────────── */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--color-text-subtle); }

/* ── 21. Selection ────────────────────────────────────────── */
::selection {
  background: rgba(99,102,241,0.2);
  color: var(--color-text);
}

/* ── 22. Focus visible ────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}