:root {
  /* Brand Core Colors */
  --brand-cyan: #2AC5F3;
  --brand-cyan-glow: rgba(42, 197, 243, 0.35);
  --brand-cyan-soft: rgba(42, 197, 243, 0.12);
  --brand-cyan-border: rgba(42, 197, 243, 0.28);

  --brand-green: #10B981;
  --brand-green-glow: rgba(16, 185, 129, 0.35);
  --brand-green-soft: rgba(16, 185, 129, 0.12);
  --brand-green-border: rgba(16, 185, 129, 0.28);

  --brand-purple: #A97BFF;
  --brand-purple-glow: rgba(169, 123, 255, 0.35);
  --brand-purple-soft: rgba(169, 123, 255, 0.12);
  --brand-purple-border: rgba(169, 123, 255, 0.28);

  --brand-amber: #F59E0B;
  --brand-amber-soft: rgba(245, 158, 11, 0.12);
  --brand-amber-border: rgba(245, 158, 11, 0.28);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Dark Theme (Default) */
[data-theme="dark"], :root:not([data-theme="light"]) {
  --bg-primary: #070B14;
  --bg-secondary: #0D1527;
  --bg-tertiary: #131E35;
  --bg-card: rgba(15, 23, 42, 0.65);
  --bg-card-hover: rgba(24, 35, 60, 0.85);
  --bg-glass: rgba(13, 21, 39, 0.72);
  --bg-nav: rgba(7, 11, 20, 0.85);

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-card: rgba(255, 255, 255, 0.12);
  --border-focus: rgba(42, 197, 243, 0.5);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 35px var(--brand-cyan-glow);

  --code-bg: rgba(0, 0, 0, 0.45);
}

/* Light Theme */
[data-theme="light"] {
  --bg-primary: #F8FAFC;
  --bg-secondary: #EDF2F7;
  --bg-tertiary: #E2E8F0;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --bg-glass: rgba(255, 255, 255, 0.8);
  --bg-nav: rgba(248, 250, 252, 0.85);

  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;

  --border-subtle: rgba(0, 0, 0, 0.06);
  --border-card: rgba(0, 0, 0, 0.09);
  --border-focus: rgba(42, 197, 243, 0.6);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 30px rgba(15, 23, 42, 0.08);
  --shadow-glow: 0 0 30px rgba(42, 197, 243, 0.2);

  --code-bg: rgba(15, 23, 42, 0.05);
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  scroll-behavior: smooth;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--bg-primary);
  background-image:
    radial-gradient(circle at 50% 0%, rgba(42, 197, 243, 0.14) 0%, transparent 60%),
    radial-gradient(circle at 10% 40%, rgba(169, 123, 255, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 70%, rgba(16, 185, 129, 0.08) 0%, transparent 40%);
  background-repeat: no-repeat;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

main {
  flex: 1;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Nav */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: var(--bg-nav);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.nav-logo {
  height: 38px;
  width: auto;
  border-radius: var(--radius-sm);
  transition: transform var(--transition-fast);
}

.nav-brand:hover .nav-logo {
  transform: scale(1.05);
}

.nav-brand-text span {
  color: var(--brand-cyan);
}

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

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--brand-cyan);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--brand-cyan);
  border-radius: var(--radius-full);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Theme Toggle Button */
.btn-icon {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  border-color: var(--border-focus);
  color: var(--brand-cyan);
  transform: translateY(-1px);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand-cyan), #0284c7);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 16px rgba(42, 197, 243, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(42, 197, 243, 0.4);
  filter: brightness(1.05);
}

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

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

.btn-sm {
  padding: 6px 14px;
  font-size: 0.85rem;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.badge-cyan, .badge.modular {
  background: var(--brand-cyan-soft);
  color: var(--brand-cyan);
  border-color: var(--brand-cyan-border);
}

.badge-green, .badge.self-hostable, .badge.reservium {
  background: var(--brand-green-soft);
  color: var(--brand-green);
  border-color: var(--brand-green-border);
}

.badge-purple, .badge.inventarium {
  background: var(--brand-purple-soft);
  color: var(--brand-purple);
  border-color: var(--brand-purple-border);
}

.badge-amber, .badge.cloud-native {
  background: var(--brand-amber-soft);
  color: var(--brand-amber);
  border-color: var(--brand-amber-border);
}

/* Page Header (for Products, Resources, Blog) */
.page-header {
  padding: 60px 0 40px;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 40px;
}

.page-title {
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.page-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 760px;
  line-height: 1.6;
}

/* Hero Section (Home Page) */
.hero-section {
  padding: 80px 0 50px;
  position: relative;
  overflow: hidden;
}

.hero-content {
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.hero-badges {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
}

.text-gradient {
  background: linear-gradient(135deg, #FFFFFF 20%, var(--brand-cyan) 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .text-gradient {
  background: linear-gradient(135deg, #0F172A 20%, #0284c7 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 36px;
  max-width: 740px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 44px;
}

/* Interactive Preview Grid / Hero Graphic */
.hero-interactive {
  margin-top: 20px;
  position: relative;
}

.interactive-preview-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
  max-width: 960px;
  margin: 0 auto;
  position: relative;
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 14px;
  margin-bottom: 20px;
}

.window-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--text-muted);
  opacity: 0.5;
}

.dot-red { background: #ef4444; opacity: 0.8; }
.dot-yellow { background: #f59e0b; opacity: 0.8; }
.dot-green { background: #10b981; opacity: 0.8; }

.preview-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand-green);
  box-shadow: 0 0 10px var(--brand-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  text-align: left;
}

.preview-item {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.preview-item:hover {
  transform: translateY(-3px);
  border-color: var(--border-focus);
}

.preview-item-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 6px;
}

.preview-item-sub {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.preview-metric {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--code-bg);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  color: var(--brand-cyan);
  display: inline-block;
}

/* Sections */
.section {
  padding: 70px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 50px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* Product Cards Grid */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-accent, var(--brand-cyan));
  opacity: 0.8;
}

.product-card.reservium { --card-accent: var(--brand-green); }
.product-card.inventarium { --card-accent: var(--brand-purple); }
.product-card.auth { --card-accent: var(--brand-cyan); }

.product-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-focus);
  box-shadow: var(--shadow-md);
}

.product-top {
  margin-bottom: 24px;
}

.product-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.product-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
}

.product-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.product-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 24px;
}

.tech-tag {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: 0.78rem;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
}

.product-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
  flex-wrap: wrap;
}

/* Philosophy Section Grid */
.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.pillar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: all var(--transition-fast);
}

.pillar-card:hover {
  border-color: var(--border-focus);
  transform: translateY(-3px);
}

.pillar-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--brand-cyan-soft);
  color: var(--brand-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.pillar-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.pillar-text {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* Callout Box (Admonition style) */
.callout-box {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-left: 4px solid var(--brand-cyan);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.callout-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--brand-cyan);
  margin-bottom: 10px;
}

.callout-content {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.callout-content ul {
  margin-left: 20px;
  margin-top: 10px;
  margin-bottom: 10px;
}

.callout-content li {
  margin-bottom: 6px;
}

/* Architecture & Organization Flow */
.arch-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
}

.arch-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  margin: 30px 0;
}

.arch-node {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
}

.arch-node h4 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.arch-node p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.arch-arrow {
  color: var(--brand-cyan);
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Story Callout */
.story-box {
  background: linear-gradient(135deg, rgba(42, 197, 243, 0.08), rgba(169, 123, 255, 0.05));
  border: 1px solid var(--brand-cyan-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-top: 40px;
  text-align: center;
  position: relative;
}

.story-quote {
  font-style: italic;
  color: var(--brand-cyan);
  font-size: 1.1rem;
  margin-top: 14px;
}

/* Resources & Community */
.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.resource-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 28px;
  text-decoration: none;
  color: inherit;
  display: flex;
  align-items: flex-start;
  gap: 18px;
  transition: all var(--transition-fast);
}

.resource-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-focus);
  box-shadow: var(--shadow-md);
}

.resource-icon {
  font-size: 1.6rem;
  color: var(--brand-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  padding: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.resource-info h4 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.resource-info p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 30px;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-top: 14px;
  max-width: 320px;
}

.footer-col h5 {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--brand-cyan);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 900px) {
  .arch-flow {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .arch-arrow {
    transform: rotate(90deg);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-nav);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid var(--border-subtle);
    transform: translateY(-150%);
    transition: transform var(--transition-normal);
  }

  .nav-menu.open {
    transform: translateY(0);
  }

  .mobile-toggle {
    display: block;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

/* ==========================================================================
   Scroll Reveal Animations
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered Children Transitions */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-stagger.active > *:nth-child(1) { transition-delay: 0.06s; opacity: 1; transform: translateY(0); }
.reveal-stagger.active > *:nth-child(2) { transition-delay: 0.14s; opacity: 1; transform: translateY(0); }
.reveal-stagger.active > *:nth-child(3) { transition-delay: 0.22s; opacity: 1; transform: translateY(0); }
.reveal-stagger.active > *:nth-child(4) { transition-delay: 0.30s; opacity: 1; transform: translateY(0); }
.reveal-stagger.active > *:nth-child(5) { transition-delay: 0.38s; opacity: 1; transform: translateY(0); }
.reveal-stagger.active > *:nth-child(6) { transition-delay: 0.46s; opacity: 1; transform: translateY(0); }

/* Reduced Motion Accessibility */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-stagger > * {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ==========================================================================
   Code Card & Copy Button Micro-interactions
   ========================================================================== */
.code-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin: 20px 0;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.code-card:hover {
  border-color: var(--border-focus);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.code-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(0, 0, 0, 0.22);
  border-bottom: 1px solid var(--border-subtle);
}

.code-card-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.copy-btn:hover {
  background: var(--brand-cyan-soft);
  border-color: var(--brand-cyan-border);
  color: var(--brand-cyan);
  transform: translateY(-1px);
}

.copy-btn:active {
  transform: scale(0.96);
}

.copy-btn.copied {
  background: var(--brand-green-soft);
  border-color: var(--brand-green-border);
  color: var(--brand-green);
  box-shadow: 0 0 14px var(--brand-green-glow);
  animation: copyPulse 0.35s ease-out;
}

@keyframes copyPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.08); }
  100% { transform: scale(1); }
}

.code-card-body {
  padding: 16px 20px;
  background: var(--code-bg);
  overflow-x: auto;
}

.code-card-body pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--text-primary);
}

.code-token-cmd { color: var(--brand-cyan); font-weight: 600; }
.code-token-flag { color: var(--brand-purple); }
.code-token-arg { color: var(--text-primary); }
.code-token-comment { color: var(--text-muted); font-style: italic; }