/**
 * QuickBio Liquid Glass Design System
 *
 * A glassmorphism design system with OKLch colors, backdrop-blur effects,
 * and comprehensive accessibility support.
 *
 * Features:
 * - Light/Dark mode via CSS variables
 * - Supports both media query (prefers-color-scheme) and class-based (.dark) switching
 * - Syncs with dashboard localStorage theme via `qb_theme` key
 * - Accessibility: reduced-transparency, high-contrast, reduced-motion support
 *
 * Key Classes:
 * - .glass, .glass-card - Glassmorphism containers
 * - .glass-nav, .glass-nav-scrolled - Navigation bar
 * - .bg-gradient-mesh - Animated gradient background
 * - .btn-gradient - Gradient buttons
 * - .logo-adaptive - Makes logos white in dark mode
 * - .text-foreground, .text-muted - Theme-aware text
 *
 * Usage: Load this CSS AFTER Tailwind CDN to override with design tokens.
 * <link rel="stylesheet" href="/css/liquid-glass.css">
 */

/* ==========================================================================
   CSS Custom Properties - Light Mode (Default)
   ========================================================================== */

:root {
  /* Core Colors - OKLch with HSL fallbacks */
  --background: #f8f9fa;
  --background: oklch(0.98 0.005 260);

  --foreground: #1a1a2e;

  --card: #ffffff;
  --card: oklch(1 0 0);

  --card-foreground: #1a1a2e;
  --card-foreground: oklch(0.145 0 0);

  --primary: #6366f1;
  --primary: oklch(0.488 0.243 264.376);

  --primary-foreground: #fafafa;
  --primary-foreground: oklch(0.985 0 0);

  --secondary: #f1f5f9;
  --secondary: oklch(0.97 0.005 260);

  --secondary-foreground: #1e293b;
  --secondary-foreground: oklch(0.205 0 0);

  --muted: #f1f5f9;
  --muted: oklch(0.97 0.005 260);

  --muted-foreground: #64748b;
  --muted-foreground: oklch(0.5 0 0);

  --accent: #f1f5f9;
  --accent: oklch(0.97 0.005 260);

  --accent-foreground: #1e293b;
  --accent-foreground: oklch(0.205 0 0);

  --destructive: #ef4444;
  --destructive: oklch(0.577 0.245 27.325);

  --destructive-foreground: #fafafa;

  --border: #e2e8f0;
  --border: oklch(0.92 0.005 260);

  --input: #e2e8f0;
  --input: oklch(0.92 0.005 260);

  --ring: #6366f1;
  --ring: oklch(0.488 0.243 264.376);

  --success: #10b981;
  --warning: #f59e0b;
  --info: #0ea5e9;

  /* Border Radius */
  --radius: 0.75rem;
  --radius-sm: calc(var(--radius) - 4px);
  --radius-md: calc(var(--radius) - 2px);
  --radius-lg: var(--radius);
  --radius-xl: calc(var(--radius) + 4px);
  --radius-2xl: calc(var(--radius) + 8px);
  --radius-full: 9999px;

  /* Blur Variables */
  --blur-xs: 2px;
  --blur-sm: 8px;
  --blur-md: 16px;
  --blur-lg: 24px;
  --blur-xl: 32px;

  /* Glass Backgrounds - Light Mode */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-bg-subtle: rgba(255, 255, 255, 0.5);
  --glass-bg-strong: rgba(255, 255, 255, 0.85);

  /* Glass Borders - Light Mode */
  --glass-border: rgba(255, 255, 255, 0.3);
  --glass-border-subtle: rgba(255, 255, 255, 0.2);
  --glass-border-strong: rgba(255, 255, 255, 0.5);

  /* Glass Shadows - Light Mode */
  --glass-shadow: 0 8px 32px rgba(31, 38, 135, 0.1);
  --glass-shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  --glass-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);

  /* Gradient Colors */
  --gradient-start: #2563eb;
  --gradient-end: #9333ea;
}

/* ==========================================================================
   CSS Custom Properties - Dark Mode (Media Query - OS Preference)
   ========================================================================== */

@media (prefers-color-scheme: dark) {
  :root:not(.light) {
    --background: #0f0f1a;
    --background: oklch(0.12 0.01 260);

    --foreground: #fafafa;
    --foreground: oklch(0.985 0 0);

    --card: #1e1e2e;
    --card: oklch(0.18 0.01 260);

    --card-foreground: #fafafa;
    --card-foreground: oklch(0.985 0 0);

    --primary: #818cf8;
    --primary: oklch(0.65 0.2 264.376);

    --secondary: #27273a;
    --secondary: oklch(0.22 0.01 260);

    --secondary-foreground: #fafafa;
    --secondary-foreground: oklch(0.985 0 0);

    --muted: #27273a;
    --muted: oklch(0.22 0.01 260);

    --muted-foreground: #a1a1aa;
    --muted-foreground: oklch(0.65 0 0);

    --accent: #27273a;
    --accent: oklch(0.22 0.01 260);

    --accent-foreground: #fafafa;
    --accent-foreground: oklch(0.985 0 0);

    --destructive: #f87171;
    --destructive: oklch(0.704 0.191 22.216);

    --border: rgba(255, 255, 255, 0.1);
    --border: oklch(1 0 0 / 10%);

    --input: rgba(255, 255, 255, 0.15);
    --input: oklch(1 0 0 / 15%);

    --ring: #818cf8;
    --ring: oklch(0.65 0.2 264.376);

    /* Glass Variables - Dark Mode */
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-bg-subtle: rgba(255, 255, 255, 0.05);
    --glass-bg-strong: rgba(255, 255, 255, 0.12);

    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-border-subtle: rgba(255, 255, 255, 0.08);
    --glass-border-strong: rgba(255, 255, 255, 0.18);

    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --glass-shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    --glass-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  }
}

/* ==========================================================================
   CSS Custom Properties - Dark Mode (Class-based - localStorage sync)
   Syncs with dashboard theme stored in localStorage('theme')
   ========================================================================== */

:root.dark {
  --background: #0f0f1a;
  --background: oklch(0.12 0.01 260);

  --foreground: #fafafa;
  --foreground: oklch(0.985 0 0);

  --card: #1e1e2e;
  --card: oklch(0.18 0.01 260);

  --card-foreground: #fafafa;
  --card-foreground: oklch(0.985 0 0);

  --primary: #818cf8;
  --primary: oklch(0.65 0.2 264.376);

  --secondary: #27273a;
  --secondary: oklch(0.22 0.01 260);

  --secondary-foreground: #fafafa;
  --secondary-foreground: oklch(0.985 0 0);

  --muted: #27273a;
  --muted: oklch(0.22 0.01 260);

  --muted-foreground: #a1a1aa;
  --muted-foreground: oklch(0.65 0 0);

  --accent: #27273a;
  --accent: oklch(0.22 0.01 260);

  --accent-foreground: #fafafa;
  --accent-foreground: oklch(0.985 0 0);

  --destructive: #f87171;
  --destructive: oklch(0.704 0.191 22.216);

  --border: rgba(255, 255, 255, 0.1);
  --border: oklch(1 0 0 / 10%);

  --input: rgba(255, 255, 255, 0.15);
  --input: oklch(1 0 0 / 15%);

  --ring: #818cf8;
  --ring: oklch(0.65 0.2 264.376);

  /* Glass Variables - Dark Mode */
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-bg-subtle: rgba(255, 255, 255, 0.05);
  --glass-bg-strong: rgba(255, 255, 255, 0.12);

  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-border-subtle: rgba(255, 255, 255, 0.08);
  --glass-border-strong: rgba(255, 255, 255, 0.18);

  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --glass-shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  --glass-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

body {
  background-color: var(--background);
  color: var(--foreground);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   Glass Utility Classes
   ========================================================================== */

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

.glass-subtle {
  background: var(--glass-bg-subtle);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  border: 1px solid var(--glass-border-subtle);
}

.glass-strong {
  background: var(--glass-bg-strong);
  backdrop-filter: blur(var(--blur-xl));
  -webkit-backdrop-filter: blur(var(--blur-xl));
  border: 1px solid var(--glass-border-strong);
  box-shadow: var(--glass-shadow-lg);
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-xl);
}

.glass-nav {
  background: var(--glass-bg-strong);
  backdrop-filter: blur(var(--blur-lg));
  -webkit-backdrop-filter: blur(var(--blur-lg));
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

@media (prefers-color-scheme: dark) {
  :root:not(.light) .glass-nav {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  }
}

:root.dark .glass-nav {
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.glass-input {
  background: var(--glass-bg-subtle);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  border: 1px solid var(--glass-border-subtle);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.glass-input:focus {
  outline: none;
  border-color: var(--ring);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.glass-button {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow-sm);
  transition: all 0.2s ease;
}

.glass-button:hover {
  background: var(--glass-bg-strong);
  box-shadow: var(--glass-shadow);
  transform: translateY(-1px);
}

.glass-modal {
  background: var(--glass-bg-strong);
  backdrop-filter: blur(var(--blur-xl));
  -webkit-backdrop-filter: blur(var(--blur-xl));
  border: 1px solid var(--glass-border-strong);
  box-shadow: var(--glass-shadow-lg);
  border-radius: var(--radius-2xl);
}

.glass-backdrop {
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
}

@media (prefers-color-scheme: dark) {
  :root:not(.light) .glass-backdrop {
    background: rgba(0, 0, 0, 0.6);
  }
}

:root.dark .glass-backdrop {
  background: rgba(0, 0, 0, 0.6);
}

.glass-sidebar {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.6) 0%,
    rgba(255, 255, 255, 0.4) 100%
  );
  backdrop-filter: blur(var(--blur-xl));
  -webkit-backdrop-filter: blur(var(--blur-xl));
  border-right: 1px solid var(--glass-border);
  box-shadow: 4px 0 24px rgba(0, 0, 0, 0.05);
}

@media (prefers-color-scheme: dark) {
  :root:not(.light) .glass-sidebar {
    background: linear-gradient(
      135deg,
      rgba(30, 30, 40, 0.8) 0%,
      rgba(20, 20, 30, 0.6) 100%
    );
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.3);
  }
}

:root.dark .glass-sidebar {
  background: linear-gradient(
    135deg,
    rgba(30, 30, 40, 0.8) 0%,
    rgba(20, 20, 30, 0.6) 100%
  );
  box-shadow: 4px 0 24px rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   Background Utilities
   ========================================================================== */

.bg-gradient-mesh {
  background-color: var(--background);
  background-image:
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(147, 51, 234, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(59, 130, 246, 0.1) 0px, transparent 50%),
    radial-gradient(at 0% 100%, rgba(99, 102, 241, 0.1) 0px, transparent 50%);
}

@media (prefers-color-scheme: dark) {
  :root:not(.light) .bg-gradient-mesh {
    background-image:
      radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.2) 0px, transparent 50%),
      radial-gradient(at 100% 0%, rgba(147, 51, 234, 0.2) 0px, transparent 50%),
      radial-gradient(at 100% 100%, rgba(59, 130, 246, 0.15) 0px, transparent 50%),
      radial-gradient(at 0% 100%, rgba(99, 102, 241, 0.15) 0px, transparent 50%);
  }
}

:root.dark .bg-gradient-mesh {
  background-image:
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.2) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(147, 51, 234, 0.2) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(59, 130, 246, 0.15) 0px, transparent 50%),
    radial-gradient(at 0% 100%, rgba(99, 102, 241, 0.15) 0px, transparent 50%);
}

/* Gradient text utility */
.gradient-text {
  background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Primary gradient button */
.btn-gradient {
  background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
  color: white;
  border: none;
  transition: all 0.2s ease;
}

.btn-gradient:hover {
  box-shadow: 0 10px 40px -10px rgba(99, 102, 241, 0.5);
  transform: translateY(-2px);
}

/* ==========================================================================
   Color Utilities
   ========================================================================== */

.text-foreground {
  color: var(--foreground);
}

.text-muted {
  color: var(--muted-foreground);
}

.text-primary {
  color: var(--primary);
}

.bg-background {
  background-color: var(--background);
}

.bg-card {
  background-color: var(--card);
}

.bg-muted {
  background-color: var(--muted);
}

.border-border {
  border-color: var(--border);
}

/* ==========================================================================
   Footer (theme-aware)
   ========================================================================== */

.footer-dark {
  background: linear-gradient(180deg, #eef0fb 0%, #e0e3f7 100%);
  color: #4b5563;
  border-top: 1px solid #c7cbed;
}

@media (prefers-color-scheme: dark) {
  :root:not(.light) .footer-dark {
    background: linear-gradient(180deg, #0c0c1a 0%, #080812 100%);
    color: #d1d5db;
    border-top: 1px solid var(--border);
  }
}

:root.dark .footer-dark {
  background: linear-gradient(180deg, #0c0c1a 0%, #080812 100%);
  color: #d1d5db;
  border-top: 1px solid var(--border);
}

/* ==========================================================================
   Form Elements
   ========================================================================== */

.input-glass {
  appearance: none;
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--glass-bg-subtle);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  color: var(--foreground);
  transition: all 0.2s ease;
}

.input-glass::placeholder {
  color: var(--muted-foreground);
}

.input-glass:focus {
  outline: none;
  border-color: var(--ring);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

@media (prefers-color-scheme: dark) {
  :root:not(.light) .input-glass {
    background: rgba(255, 255, 255, 0.05);
  }

  :root:not(.light) .input-glass:focus {
    box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.2);
  }
}

:root.dark .input-glass {
  background: rgba(255, 255, 255, 0.05);
}

:root.dark .input-glass:focus {
  box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.2);
}

/* ==========================================================================
   Animation Utilities
   ========================================================================== */

@keyframes pulse-glow {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.5; }
}

.animate-pulse-glow {
  animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes spinner {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.animate-spin {
  animation: spinner 0.6s linear infinite;
}

/* ==========================================================================
   Loading Overlay
   ========================================================================== */

.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
}

.loading-overlay-bg {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(147, 51, 234, 0.2));
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
}

@media (prefers-color-scheme: dark) {
  :root:not(.light) .loading-overlay-bg {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3), rgba(147, 51, 234, 0.3));
  }
}

:root.dark .loading-overlay-bg {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.3), rgba(147, 51, 234, 0.3));
}

.loader-ring {
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  width: 3rem;
  height: 3rem;
  animation: spinner 0.6s linear infinite;
}

/* ==========================================================================
   Accessibility: Reduced Transparency
   ========================================================================== */

@media (prefers-reduced-transparency: reduce) {
  .glass,
  .glass-subtle,
  .glass-strong,
  .glass-card,
  .glass-sidebar,
  .glass-nav,
  .glass-input,
  .glass-button,
  .glass-modal {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }

  :root {
    --glass-bg: rgba(255, 255, 255, 0.95);
    --glass-bg-subtle: rgba(255, 255, 255, 0.92);
    --glass-bg-strong: rgba(255, 255, 255, 0.98);
  }

  @media (prefers-color-scheme: dark) {
    :root:not(.light) {
      --glass-bg: rgba(30, 30, 35, 0.95);
      --glass-bg-subtle: rgba(30, 30, 35, 0.92);
      --glass-bg-strong: rgba(30, 30, 35, 0.98);
    }
  }

  :root.dark {
    --glass-bg: rgba(30, 30, 35, 0.95);
    --glass-bg-subtle: rgba(30, 30, 35, 0.92);
    --glass-bg-strong: rgba(30, 30, 35, 0.98);
  }
}

/* ==========================================================================
   Accessibility: High Contrast Mode
   ========================================================================== */

@media (prefers-contrast: high) {
  .glass,
  .glass-subtle,
  .glass-strong,
  .glass-card,
  .glass-sidebar,
  .glass-nav,
  .glass-input,
  .glass-button,
  .glass-modal {
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border-width: 2px;
  }

  :root {
    --glass-bg: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(0, 0, 0, 0.3);
  }

  @media (prefers-color-scheme: dark) {
    :root:not(.light) {
      --glass-bg: rgba(20, 20, 25, 0.9);
      --glass-border: rgba(255, 255, 255, 0.3);
    }
  }

  :root.dark {
    --glass-bg: rgba(20, 20, 25, 0.9);
    --glass-border: rgba(255, 255, 255, 0.3);
  }
}

/* ==========================================================================
   Accessibility: Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .glass,
  .glass-subtle,
  .glass-strong,
  .glass-card,
  .glass-sidebar,
  .glass-nav,
  .glass-input,
  .glass-button,
  .glass-modal,
  [class*="glass"],
  .btn-gradient,
  .animate-pulse-glow {
    animation: none !important;
    transition: none !important;
  }
}

/* ==========================================================================
   Feature Detection Fallback
   ========================================================================== */

@supports not (backdrop-filter: blur(10px)) {
  .glass,
  .glass-subtle,
  .glass-strong,
  .glass-card,
  .glass-sidebar,
  .glass-nav,
  .glass-input,
  .glass-button,
  .glass-modal {
    background: var(--glass-bg-strong);
  }

  @media (prefers-color-scheme: dark) {
    :root:not(.light) .glass,
    :root:not(.light) .glass-subtle,
    :root:not(.light) .glass-strong,
    :root:not(.light) .glass-card,
    :root:not(.light) .glass-sidebar,
    :root:not(.light) .glass-nav,
    :root:not(.light) .glass-input,
    :root:not(.light) .glass-button,
    :root:not(.light) .glass-modal {
      background: rgba(30, 30, 40, 0.95);
    }
  }

  :root.dark .glass,
  :root.dark .glass-subtle,
  :root.dark .glass-strong,
  :root.dark .glass-card,
  :root.dark .glass-sidebar,
  :root.dark .glass-nav,
  :root.dark .glass-input,
  :root.dark .glass-button,
  :root.dark .glass-modal {
    background: rgba(30, 30, 40, 0.95);
  }
}

/* ==========================================================================
   Alert/Message Boxes
   ========================================================================== */

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #dc2626;
  border-radius: var(--radius-xl);
}

@media (prefers-color-scheme: dark) {
  :root:not(.light) .alert-error {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(248, 113, 113, 0.3);
    color: #f87171;
  }
}

:root.dark .alert-error {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(248, 113, 113, 0.3);
  color: #f87171;
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #059669;
  border-radius: var(--radius-xl);
}

@media (prefers-color-scheme: dark) {
  :root:not(.light) .alert-success {
    background: rgba(16, 185, 129, 0.15);
    border-color: rgba(52, 211, 153, 0.3);
    color: #34d399;
  }
}

:root.dark .alert-success {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(52, 211, 153, 0.3);
  color: #34d399;
}

.alert-info {
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: #2563eb;
  border-radius: var(--radius-xl);
}

@media (prefers-color-scheme: dark) {
  :root:not(.light) .alert-info {
    background: rgba(59, 130, 246, 0.15);
    border-color: rgba(96, 165, 250, 0.3);
    color: #60a5fa;
  }
}

:root.dark .alert-info {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(96, 165, 250, 0.3);
  color: #60a5fa;
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #d97706;
  border-radius: var(--radius-xl);
}

@media (prefers-color-scheme: dark) {
  :root:not(.light) .alert-warning {
    background: rgba(245, 158, 11, 0.15);
    border-color: rgba(251, 191, 36, 0.3);
    color: #fbbf24;
  }
}

:root.dark .alert-warning {
  background: rgba(245, 158, 11, 0.15);
  border-color: rgba(251, 191, 36, 0.3);
  color: #fbbf24;
}

/* ==========================================================================
   Logo Dark Mode Utility
   Makes colored logos white in dark mode (for navbar)
   ========================================================================== */

@media (prefers-color-scheme: dark) {
  :root:not(.light) .logo-adaptive {
    filter: brightness(0) invert(1);
  }
}

:root.dark .logo-adaptive {
  filter: brightness(0) invert(1);
}

/* ==========================================================================
   Navigation - Scrolled State
   Triggered by JS when user scrolls past threshold
   ========================================================================== */

.glass-nav-scrolled {
  background: var(--glass-bg-strong);
  backdrop-filter: blur(var(--blur-xl));
  -webkit-backdrop-filter: blur(var(--blur-xl));
  box-shadow: var(--glass-shadow);
}

/* ==========================================================================
   Reading Progress Bar
   Fixed bar under nav that fills as user scrolls
   ========================================================================== */

.reading-progress {
  position: fixed;
  top: 64px;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
  z-index: 49;
  pointer-events: none;
}

/* ==========================================================================
   Scroll Reveal Animation System
   Elements start hidden, become visible when entering viewport
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible,
.reveal-left.visible,
.reveal-right.visible,
.reveal-scale.visible {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Stagger delays for grid items */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ==========================================================================
   Hero Animated Orbs
   Blurred circles that drift slowly in the background
   ========================================================================== */

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

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  pointer-events: none;
}

:root.dark .hero-orb {
  opacity: 0.25;
}

@media (prefers-color-scheme: dark) {
  :root:not(.light) .hero-orb {
    opacity: 0.25;
  }
}

.hero-orb-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.5), transparent 70%);
  top: -10%;
  left: -5%;
  animation: orb-drift-1 20s ease-in-out infinite;
}

.hero-orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(147, 51, 234, 0.4), transparent 70%);
  top: 20%;
  right: -5%;
  animation: orb-drift-2 25s ease-in-out infinite;
}

.hero-orb-3 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.35), transparent 70%);
  bottom: -5%;
  left: 30%;
  animation: orb-drift-3 18s ease-in-out infinite;
}

@keyframes orb-drift-1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(60px, -40px) scale(1.1); }
  66% { transform: translate(-30px, 50px) scale(0.9); }
}

@keyframes orb-drift-2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-80px, 60px) scale(1.15); }
}

@keyframes orb-drift-3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  40% { transform: translate(50px, -30px) scale(0.85); }
  75% { transform: translate(-40px, 20px) scale(1.1); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-orb-1,
  .hero-orb-2,
  .hero-orb-3 {
    animation: none;
  }
}

/* ==========================================================================
   Hero Floating Badges
   Small glass pills around the phone mockup
   ========================================================================== */

.hero-float-badge {
  position: absolute;
  background: var(--glass-bg-strong);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  padding: 0.4rem 0.875rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--foreground);
  box-shadow: var(--glass-shadow-sm);
  white-space: nowrap;
  z-index: 20;
  pointer-events: none;
  animation: float-badge 5s ease-in-out infinite;
}

.hero-float-badge:nth-child(2) {
  animation-delay: -1.7s;
}

.hero-float-badge:nth-child(3) {
  animation-delay: -3.3s;
}

@keyframes float-badge {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-float-badge {
    animation: none;
  }
}

/* ==========================================================================
   Stat Numbers (Social Proof)
   Large gradient numbers for counter section
   ========================================================================== */

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

@media (max-width: 640px) {
  .stat-number {
    font-size: 2rem;
  }
}

/* ==========================================================================
   Theme Pill Tabs
   Horizontal theme selector strip
   ========================================================================== */

.theme-pill-strip {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 0.25rem;
  justify-content: center;
  flex-wrap: wrap;
}

.theme-pill-strip::-webkit-scrollbar {
  display: none;
}

.theme-pill {
  padding: 0.375rem 0.875rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid var(--border);
  color: var(--muted-foreground);
  background: transparent;
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.theme-pill.active {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.theme-pill:hover:not(.active) {
  border-color: var(--primary);
  color: var(--primary);
}

/* Theme navigation arrows */
.theme-nav-arrow {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  color: var(--foreground);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.25s ease;
  flex-shrink: 0;
}

.theme-nav-arrow:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--glass-bg-subtle);
  transform: scale(1.1);
}

.theme-nav-arrow:active {
  transform: scale(0.95);
}

/* ==========================================================================
   Timeline (How It Works)
   Vertical timeline with animated connecting line
   ========================================================================== */

.timeline-container {
  position: relative;
  padding-left: 5rem;
  max-width: 640px;
  margin: 0 auto;
}

.timeline-track {
  position: absolute;
  left: 1.75rem;
  top: 1.5rem;
  bottom: 1.5rem;
  width: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.timeline-track-fill {
  width: 100%;
  height: 0%;
  background: linear-gradient(to bottom, var(--gradient-start), var(--gradient-end));
  border-radius: 2px;
  transition: height 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-track-fill.animated {
  height: 100%;
}

.timeline-step {
  position: relative;
  margin-bottom: 3rem;
}

.timeline-step:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -4.25rem;
  top: 0.25rem;
  width: 3.5rem;
  height: 3.5rem;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
  font-weight: 800;
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.35);
  z-index: 2;
}

@media (max-width: 640px) {
  .timeline-container {
    padding-left: 4rem;
  }

  .timeline-dot {
    width: 2.75rem;
    height: 2.75rem;
    left: -3.5rem;
    font-size: 1rem;
  }

  .timeline-track {
    left: 1.25rem;
  }
}

/* ==========================================================================
   Persona Horizontal Scroll Cards
   Scrollable on mobile, grid on desktop
   ========================================================================== */

.persona-scroll {
  display: flex;
  gap: 1.25rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 0.5rem 0 1.5rem;
}

.persona-scroll::-webkit-scrollbar {
  display: none;
}

.persona-card {
  scroll-snap-align: start;
  flex-shrink: 0;
  width: min(280px, 80vw);
}

@media (min-width: 768px) {
  .persona-scroll {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    overflow: visible;
    scroll-snap-type: none;
  }

  .persona-card {
    width: auto;
  }
}

@media (min-width: 1024px) {
  .persona-scroll {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ==========================================================================
   Competitor Comparison Table
   ========================================================================== */

.comparison-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.comparison-table th {
  font-weight: 700;
  font-size: 0.875rem;
  padding: 1rem 1.25rem;
  color: var(--muted-foreground);
  text-align: center;
  border-bottom: 2px solid var(--border);
  background: var(--glass-bg-subtle);
}

.comparison-table th:first-child {
  text-align: left;
  border-top-left-radius: var(--radius-xl);
}

.comparison-table th:last-child {
  border-top-right-radius: var(--radius-xl);
}

.comparison-table td {
  padding: 0.875rem 1.25rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

.comparison-table td:first-child {
  text-align: left;
  font-weight: 500;
  color: var(--foreground);
}

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

.comparison-table tbody tr:hover {
  background: var(--glass-bg-subtle);
}

/* Highlighted QuickBio column */
.qb-col {
  background: rgba(99, 102, 241, 0.06) !important;
  color: var(--foreground) !important;
  font-weight: 600 !important;
}

:root.dark .qb-col {
  background: rgba(99, 102, 241, 0.12) !important;
}

@media (prefers-color-scheme: dark) {
  :root:not(.light) .qb-col {
    background: rgba(99, 102, 241, 0.12) !important;
  }
}

/* Column border highlight */
th.qb-col {
  border-left: 2px solid rgba(99, 102, 241, 0.4);
  border-right: 2px solid rgba(99, 102, 241, 0.4);
  border-top: 2px solid rgba(99, 102, 241, 0.4);
  border-top-right-radius: var(--radius-xl);
  border-top-left-radius: var(--radius-xl);
}

td.qb-col {
  border-left: 2px solid rgba(99, 102, 241, 0.4);
  border-right: 2px solid rgba(99, 102, 241, 0.4);
}

tbody tr:last-child td.qb-col {
  border-bottom: 2px solid rgba(99, 102, 241, 0.4);
  border-bottom-left-radius: var(--radius-xl);
  border-bottom-right-radius: var(--radius-xl);
}

/* Mobile: sticky first column */
@media (max-width: 768px) {
  .comparison-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .comparison-table {
    min-width: 640px;
  }

  .comparison-table td:first-child,
  .comparison-table th:first-child {
    position: sticky;
    left: 0;
    background: var(--background);
    z-index: 1;
  }
}

.check-yes {
  color: var(--success);
  font-weight: bold;
}

.check-no {
  color: var(--muted-foreground);
  opacity: 0.4;
}

.best-value-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: white;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   Phone Mockup Frame
   Realistic phone frame for product demos
   ========================================================================== */

.phone-frame {
  position: relative;
  width: 280px;
  border-radius: 48px;
  background: #111;
  padding: 10px;
  box-shadow:
    0 0 0 1.5px #2a2a2a,
    0 0 0 3px #111,
    0 25px 60px -10px rgba(0, 0, 0, 0.4);
}

.phone-frame::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.06), transparent);
  border-radius: 48px 48px 0 0;
  pointer-events: none;
  z-index: 30;
}

/* Dynamic Island pill — overlays on the screen */
.phone-notch {
  width: 84px;
  height: 20px;
  background: #000;
  border-radius: 20px;
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
}

.phone-screen {
  background: var(--card);
  border-radius: 38px;
  overflow: hidden;
  position: relative;
  padding-top: 28px;
  padding-bottom: 16px;
}

/* iPhone home indicator bar */
.phone-screen::after {
  content: '';
  display: block;
  width: 100px;
  height: 4px;
  background: var(--phone-indicator, rgba(0, 0, 0, 0.18));
  border-radius: 4px;
  margin: 8px auto 0;
}

@media (max-width: 768px) {
  .phone-frame {
    width: 240px;
    border-radius: 40px;
    padding: 8px;
  }

  .phone-screen {
    border-radius: 32px;
    padding-top: 24px;
    padding-bottom: 12px;
  }

  .phone-screen::after {
    width: 80px;
    height: 3px;
  }

  .phone-notch {
    width: 70px;
    height: 16px;
    border-radius: 16px;
    top: 16px;
  }
}

/* ==========================================================================
   App Showcase (Angled Phones)
   ========================================================================== */

.app-showcase {
  position: relative;
  height: 400px;
  width: 100%;
}

.app-phone {
  position: absolute;
  width: 200px;
  height: 400px;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.3);
}

.app-phone-1 {
  left: 0;
  top: 20px;
  transform: rotate(-8deg);
  z-index: 1;
  opacity: 0.7;
}

.app-phone-2 {
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
}

.app-phone-3 {
  right: 0;
  top: 20px;
  transform: rotate(8deg);
  z-index: 1;
  opacity: 0.7;
}

@media (max-width: 768px) {
  .app-showcase {
    height: 320px;
  }

  .app-phone {
    width: 160px;
    height: 320px;
  }

  .app-phone-1,
  .app-phone-3 {
    display: none;
  }

  .app-phone-2 {
    position: relative;
    left: auto;
    margin: 0 auto;
  }
}

/* ==========================================================================
   Feature Pill Tags
   Small inline pills for feature highlights
   ========================================================================== */

.feature-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  background: transparent;
  border: 1px solid oklch(from var(--foreground) l c h / 0.15);
  color: oklch(from var(--foreground) l c h / 0.6);
  cursor: default;
  user-select: none;
}

/* ==========================================================================
   Inline Success/Error States (for forms)
   ========================================================================== */

.form-success {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-xl);
  padding: 2rem;
  text-align: center;
}

.form-success-icon {
  width: 3.5rem;
  height: 3.5rem;
  background: rgba(16, 185, 129, 0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: var(--success);
}

/* ==========================================================================
   Section Divider
   ========================================================================== */

.section-divider {
  border: none;
  height: 1px;
  background: var(--border);
  margin: 0;
}

/* ==========================================================================
   Features Dropdown (Nav)
   Desktop hover-triggered dropdown for feature sub-pages
   ========================================================================== */

.features-dropdown {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(4px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
}

.features-trigger:hover .features-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

/* Dropdown panel needs near-opaque background so page content
   (glass-cards with backdrop-filter + reveal transforms) doesn't bleed through */
.features-dropdown .glass-card {
  background: rgba(255, 255, 255, 0.95);
}

@media (prefers-color-scheme: dark) {
  :root:not(.light) .features-dropdown .glass-card {
    background: rgba(15, 15, 26, 0.95);
  }
}

:root.dark .features-dropdown .glass-card {
  background: rgba(15, 15, 26, 0.95);
}