/* ==========================================================================
   Flit - Enterprise AI Gateway Design System
   Monolithic Brutalism / Architectural Minimalism
   Multi-Theme (Dark Monolith / Pastel Light Stone / System)
   ========================================================================== */

@import url(https://api.fontshare.com/v2/css?f[]=cabinet-grotesk@400,500,700,800,900&display=swap);
@import url(https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;500;600;700&display=swap);

/* ==========================================================================
   Theme Tokens - Dark Monolith Default (RytQlk Design System)
   ========================================================================== */
:root {
  --color-mode: 'dark';

  /* Surface & Base - Deep Architectural Monolith */
  --bg-base: #050505;
  --bg-surface: #0a0a0a;
  --bg-elevated: #111111;
  --bg-card: #0a0a0a;
  --bg-card-hover: #141414;
  --bg-glass: rgba(5, 5, 5, 0.88);

  --border-subtle: #1a1a1a;
  --border-medium: #222222;
  --border-glow: #444444;

  --text-primary: #ffffff;
  --text-secondary: #aaaaaa;
  --text-muted: #666666;
  --text-inverse: #050505;

  /* Subtle Pastel Accent Tokens */
  --pastel-sky: #7dd3fc;
  --pastel-indigo: #93c5fd;
  --pastel-lavender: #a5b4fc;
  --pastel-lilac: #d8b4fe;
  --pastel-mint: #34d399;
  --pastel-peach: #fde047;
  --pastel-rose: #fca5a5;
  --pastel-coral: #fdba74;

  /* Semantic Mappings */
  --accent-primary: #ffffff;
  --accent-secondary: #aaaaaa;
  --accent-tertiary: #666666;
  --accent-success: #34d399;
  --accent-warning: #fde047;
  --accent-danger: #fca5a5;

  /* Monolith Gradients & Glows */
  --gradient-brand: linear-gradient(135deg, #ffffff 0%, #d4d4d4 50%, #888888 100%);
  --gradient-brand-subtle: linear-gradient(135deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%);
  --gradient-card: #0a0a0a;
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.04), transparent 70%);

  /* Typography */
  --font-sans: 'JetBrains Mono', monospace;
  --font-display: 'Cabinet Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Shadows - Minimalist Architectural */
  --shadow-sm: none;
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.8);
  --shadow-glow: none;
  --shadow-glow-purple: none;

  /* Layout - Zero Radii (Sharp Brutalist Precision) */
  --header-height: 76px;
  --container-max: 1360px;
  --radius-sm: 0px;
  --radius-md: 0px;
  --radius-lg: 0px;
  --radius-full: 0px;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   Light Theme - Architectural Pastel Ivory Stone
   ========================================================================== */
[data-theme="light"] {
  --color-mode: 'light';
  color-scheme: light;

  --bg-base: #faf8f5;
  --bg-surface: #ffffff;
  --bg-elevated: #f4f1ea;
  --bg-card: #ffffff;
  --bg-card-hover: #f4f1ea;
  --bg-glass: rgba(250, 248, 245, 0.88);

  --border-subtle: #e4e0d5;
  --border-medium: #cdc7b8;
  --border-glow: #a8a294;

  --text-primary: #141413;
  --text-secondary: #52504b;
  --text-muted: #7c7971;
  --text-inverse: #faf8f5;

  /* Pastel Accents in Light Mode */
  --pastel-sky: #0284c7;
  --pastel-indigo: #4f46e5;
  --pastel-lavender: #6366f1;
  --pastel-lilac: #9333ea;
  --pastel-mint: #059669;
  --pastel-peach: #d97706;
  --pastel-rose: #e11d48;
  --pastel-coral: #ea580c;

  --accent-primary: #141413;
  --accent-secondary: #52504b;
  --accent-tertiary: #7c7971;
  --accent-success: #059669;
  --accent-warning: #d97706;
  --accent-danger: #e11d48;

  --gradient-brand: linear-gradient(135deg, #141413 0%, #333333 50%, #666666 100%);
  --gradient-brand-subtle: linear-gradient(135deg, rgba(20, 20, 19, 0.05) 0%, rgba(20, 20, 19, 0.02) 100%);
  --gradient-card: #ffffff;
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(20, 20, 19, 0.03), transparent 70%);

  --shadow-sm: none;
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.06);
  --shadow-glow: none;
  --shadow-glow-purple: none;
}

/* ==========================================================================
   Global Reset & Base
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

::selection {
  background-color: #ffffff;
  color: #050505;
}

[data-theme="light"] ::selection {
  background-color: #141413;
  color: #faf8f5;
}

::-webkit-scrollbar {
  height: 8px;
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
  background: var(--border-medium);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--border-glow);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

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

button, input, select, textarea {
  font-family: var(--font-mono);
  color: inherit;
}

button {
  background: transparent;
  border: none;
  cursor: pointer;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--text-primary);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.035em;
  line-height: 1.05;
  transition: color var(--transition-normal);
}

h1 {
  font-size: clamp(2.75rem, 5.5vw, 4.5rem);
  line-height: 0.95;
}

h2 {
  font-size: clamp(2rem, 3.5vw, 3rem);
  line-height: 1.02;
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
}

h4 {
  font-size: 1.15rem;
  font-weight: 700;
}

p {
  color: var(--text-secondary);
  font-family: var(--font-sans);
  transition: color var(--transition-normal);
}

.gradient-text {
  color: var(--text-primary);
  display: inline-block;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

@media (min-width: 768px) {
  .container {
    padding: 0 2.5rem;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 3.5rem;
  }
}

.main-content {
  flex: 1 0 auto;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   Navigation Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.site-header.scrolled {
  border-bottom: 1px solid var(--border-medium);
}

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

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.35rem;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.brand-icon {
  width: 32px;
  height: 32px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-fast);
}

.brand-link:hover .brand-icon {
  border-color: var(--text-primary);
}

.brand-icon svg {
  width: 18px;
  height: 18px;
  fill: var(--text-primary);
}

.brand-badge {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  font-weight: 500;
  letter-spacing: 0.25em;
  background: var(--bg-surface);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  padding: 0.2rem 0.5rem;
}

.brand-badge-coming-soon {
  color: var(--pastel-mint);
  border-color: var(--pastel-mint);
  background: rgba(52, 211, 153, 0.08);
  letter-spacing: 0.18em;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.brand-badge-coming-soon::before {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--pastel-mint);
  box-shadow: 0 0 6px var(--pastel-mint);
}

[data-theme="light"] .brand-badge-coming-soon {
  background: rgba(5, 150, 105, 0.08);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--text-primary);
}

/* ==========================================================================
   Contact Navigation Link & Tooltip
   ========================================================================== */
.nav-link-contact {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.nav-link-contact .nav-tooltip {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  display: none;
  align-items: center;
  gap: 0.45rem;
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  padding: 0.35rem 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: lowercase;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: 200;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
  pointer-events: none;
}

.nav-link-contact .nav-tooltip svg {
  flex-shrink: 0;
  color: var(--pastel-mint);
}

.nav-link-contact .nav-tooltip::before {
  content: '';
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: transparent transparent var(--border-medium) transparent;
}

.nav-link-contact .nav-tooltip::after {
  content: '';
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 4px;
  border-style: solid;
  border-color: transparent transparent var(--bg-surface) transparent;
}

.nav-link-contact:hover .nav-tooltip,
.nav-link-contact:focus-visible .nav-tooltip,
.nav-link-contact:focus-within .nav-tooltip {
  display: inline-flex;
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

[data-theme="light"] .nav-link-contact .nav-tooltip {
  background: #FFFFFF;
  border-color: var(--border-medium);
  color: var(--text-primary);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .nav-link-contact .nav-tooltip::after {
  border-color: transparent transparent #FFFFFF transparent;
}

.mobile-nav .nav-link-contact-mobile {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.mobile-nav .mobile-contact-email {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
  text-transform: lowercase;
  letter-spacing: 0.04em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* ==========================================================================
   Theme Switcher Button
   ========================================================================== */
.theme-switch-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.55rem 0.85rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.theme-switch-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-primary);
}

.theme-icon-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

/* Icon-only Theme Dropdown in Flit */
.theme-dropdown {
  position: relative;
  display: inline-block;
}

.theme-dropdown-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 36px;
  padding: 0 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.theme-dropdown-btn:hover,
.theme-dropdown.open .theme-dropdown-btn {
  color: var(--text-primary);
  border-color: var(--text-primary);
  background: var(--bg-elevated);
}

.theme-dropdown-btn:focus-visible {
  outline: 2px solid var(--text-primary);
  outline-offset: 1px;
}

.theme-btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.theme-btn-icon svg {
  display: block;
}

.theme-chevron {
  transition: transform var(--transition-fast);
  opacity: 0.7;
}

.theme-dropdown.open .theme-chevron {
  transform: rotate(180deg);
}

.theme-dropdown-menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 140px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  padding: 4px;
  display: none;
  flex-direction: column;
  gap: 2px;
  z-index: 1000;
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-sm);
}

.theme-dropdown.open .theme-dropdown-menu {
  display: flex;
  animation: themeFadeIn var(--transition-fast) ease-out;
}

@keyframes themeFadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.theme-dropdown-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 8px 10px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  text-align: left;
  transition: all var(--transition-fast);
  border-radius: calc(var(--radius-sm) - 2px);
}

.theme-item-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.theme-item-left svg {
  display: block;
  flex-shrink: 0;
}

.theme-item-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.theme-dropdown-item:hover,
.theme-dropdown-item:focus-visible {
  background: var(--bg-elevated);
  color: var(--text-primary);
  outline: none;
}

/* FinOps Calculator Optimization Callout */
.optimization-callout {
  background: rgba(125, 211, 252, 0.08);
  border: 1px solid rgba(125, 211, 252, 0.28);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
}

[data-theme="light"] .optimization-callout {
  background: rgba(2, 132, 199, 0.06);
  border-color: rgba(2, 132, 199, 0.28);
}

.optimization-callout .callout-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.optimization-callout .callout-monthly {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0.25rem 0;
  font-family: var(--font-display);
}

.optimization-callout .callout-annual {
  font-size: 1.1rem;
  color: var(--pastel-sky);
  font-weight: 600;
}

.theme-dropdown-item .theme-check {
  display: none;
  color: var(--text-primary);
}

.theme-dropdown-item.active {
  color: var(--text-primary);
  font-weight: 600;
}

.theme-dropdown-item.active .theme-check {
  display: inline-block;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.4rem 0.75rem;
}

/* ==========================================================================
   Buttons & CTAs
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.8rem 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  border: 1px solid transparent;
  line-height: 1;
}

.btn-primary {
  background: #ffffff;
  color: #050505;
  border: 1px solid #ffffff;
}

.btn-primary:hover {
  background: #d4d4d4;
  border-color: #d4d4d4;
  color: #050505;
}

[data-theme="light"] .btn-primary {
  background: #141413;
  color: #faf8f5;
  border: 1px solid #141413;
}

[data-theme="light"] .btn-primary:hover {
  background: #2e2e2a;
  border-color: #2e2e2a;
  color: #faf8f5;
}

.btn-secondary {
  background: transparent;
  color: #ffffff;
  border: 1px solid #222222;
}

.btn-secondary:hover {
  border-color: #ffffff;
  color: #ffffff;
}

[data-theme="light"] .btn-secondary {
  background: transparent;
  color: #141413;
  border: 1px solid #cdc7b8;
}

[data-theme="light"] .btn-secondary:hover {
  border-color: #141413;
  color: #141413;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.68rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 0.75rem;
}

/* ==========================================================================
   Badges
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  line-height: 1;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  color: var(--text-secondary);
}

.badge-cyan {
  border-color: var(--border-medium);
  color: var(--text-primary);
}

.badge-purple {
  border-color: var(--border-medium);
  color: var(--text-primary);
}

.badge-emerald {
  border-color: var(--border-medium);
  color: var(--accent-success);
}

.badge-coming-soon {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.25rem 0.6rem;
  background: rgba(52, 211, 153, 0.12);
  border: 1px solid var(--pastel-mint);
  color: var(--pastel-mint);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  line-height: 1;
}

[data-theme="light"] .badge-coming-soon {
  background: rgba(5, 150, 105, 0.08);
  border-color: var(--pastel-mint);
  color: var(--pastel-mint);
}

.badge-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--pastel-mint);
  box-shadow: 0 0 6px var(--pastel-mint);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.35;
    transform: scale(0.75);
  }
}

/* ==========================================================================
   Cards & Containers
   ========================================================================== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 2rem;
  transition: border-color var(--transition-normal);
  position: relative;
}

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

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

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* ==========================================================================
   Code Window & Copy Buttons
   ========================================================================== */
.code-window {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  transition: border-color var(--transition-normal);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.15rem;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-subtle);
}

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

.code-dot {
  width: 8px;
  height: 8px;
  background: var(--border-medium);
}

.code-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.code-body {
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--text-primary);
  overflow-x: auto;
}

.code-body pre {
  margin: 0;
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--border-medium);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  padding: 0.25rem 0.65rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
}

/* ==========================================================================
   Alerts / Callout Boxes
   ========================================================================== */
.alert {
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  display: flex;
  gap: 1rem;
  font-size: 0.875rem;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  color: var(--text-primary);
}

.alert-info {
  border-left: 3px solid var(--border-glow);
}

.alert-warning {
  border-left: 3px solid var(--accent-warning);
}

.alert-success {
  border-left: 3px solid var(--accent-success);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 4.5rem 0 2.5rem;
  margin-top: auto;
  position: relative;
  z-index: 10;
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand p {
  margin-top: 1rem;
  max-width: 320px;
  font-size: 0.85rem;
  line-height: 1.6;
}

.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.65rem;
}

.footer-col a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

/* ==========================================================================
   Mobile Nav Drawer
   ========================================================================== */
.mobile-nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-base);
  border-top: 1px solid var(--border-subtle);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 99;
}

.mobile-nav.open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-nav .nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

/* ==========================================================================
   Scroll Reveal Hooks
   ========================================================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-on-scroll {
  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);
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.stagger-1 { transition-delay: 0.08s; }
.stagger-2 { transition-delay: 0.16s; }
.stagger-3 { transition-delay: 0.24s; }
.stagger-4 { transition-delay: 0.32s; }

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .main-nav { gap: 1.25rem; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; gap: 2rem; }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .mobile-menu-btn { display: block; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
  .header-actions .btn-sm { display: none; }
}