src/app.css

@import 'tailwindcss';
@plugin '@tailwindcss/forms';
@plugin '@tailwindcss/typography';

button,
[type='button'],
[type='submit'],
[type='reset'],
a,
[role='button'],
summary {
	cursor: pointer;
}

button:disabled,
[type='button']:disabled,
[type='submit']:disabled,
[type='reset']:disabled,
[role='button'][aria-disabled='true'],
a[aria-disabled='true'] {
	cursor: not-allowed;
}

/* ============================================
   DESIGN SYSTEM TOKENS
   ============================================ */

/* Performance-optimized blur and effects */
:root[data-performance='medium'] {
  --perf-blur-high: 22px;
  --perf-blur-medium: 18px;
  --perf-blur-low: 14px;
  --perf-saturate: 125%;
}

:root[data-performance='low'] {
  --perf-blur-high: 0px;
  --perf-blur-medium: 0px;
  --perf-blur-low: 0px;
  --perf-saturate: 100%;
}

:root[data-performance='low'] * {
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

:root[data-performance='low'] .glass-panel,
:root[data-performance='low'] .glass-toolbar,
:root[data-performance='low'] .settings-menu,
:root[data-performance='low'] .toolbar-button,
:root[data-performance='low'] .glass-option,
:root[data-performance='low'] .glass-action,
:root[data-performance='low'] .glass-option__chip,
:root[data-performance='low'] .glass-panel__footer,
:root[data-performance='low'] .navigation-overlay,
:root[data-performance='low'] .navigation-overlay__progress {
  background-color: rgba(15, 23, 42, 0.92) !important;
  border-color: rgba(148, 163, 184, 0.2) !important;
  box-shadow: none !important;
}

:root[data-performance='low'] .toolbar-button,
:root[data-performance='low'] .glass-option,
:root[data-performance='low'] .glass-action {
  transition: none;
}

:root:not([data-performance='medium']):not([data-performance='low']) {
	--perf-blur-high: 32px;
	--perf-blur-medium: 28px;
	--perf-blur-low: 24px;
	--perf-saturate: 160%;
}

/* Enhanced Color Palette */
:root {
  /* Primary Blues */
  --color-primary-50: #eff6ff;
  --color-primary-100: #dbeafe;
  --color-primary-200: #bfdbfe;
  --color-primary-300: #93c5fd;
  --color-primary-400: #60a5fa;
  --color-primary-500: #3b82f6;
  --color-primary-600: #2563eb;
  --color-primary-700: #1d4ed8;
  --color-primary-800: #1e40af;
  --color-primary-900: #1e3a8a;
  
  /* Accent Purples */
  --color-accent-400: #a78bfa;
  --color-accent-500: #8b5cf6;
  --color-accent-600: #7c3aed;
  
  /* Neutrals (Slate) */
  --color-neutral-50: #f8fafc;
  --color-neutral-100: #f1f5f9;
  --color-neutral-200: #e2e8f0;
  --color-neutral-300: #cbd5e1;
  --color-neutral-400: #94a3b8;
  --color-neutral-500: #64748b;
  --color-neutral-600: #475569;
  --color-neutral-700: #334155;
  --color-neutral-800: #1e293b;
  --color-neutral-900: #0f172a;
  --color-neutral-950: #020617;
  
  /* Semantic Colors */
  --color-success-500: #22c55e;
  --color-warning-500: #f59e0b;
  --color-error-500: #ef4444;
  
  /* Spacing Scale */
  --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;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-glow-sm: 0 0 10px rgba(59, 130, 246, 0.15);
  --shadow-glow-md: 0 0 20px rgba(59, 130, 246, 0.2);
  --shadow-glow-lg: 0 0 40px rgba(59, 130, 246, 0.25);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Gradient Definitions */
.gradient-primary {
  background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-accent-500) 100%);
}

.gradient-text-primary {
  background: linear-gradient(135deg, var(--color-primary-400) 0%, var(--color-accent-400) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.gradient-text-hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradient-shift 8s ease infinite;
}

@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* Glass Effect Utilities */
.glass-subtle {
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(var(--perf-blur-low, 24px)) saturate(var(--perf-saturate, 160%));
  -webkit-backdrop-filter: blur(var(--perf-blur-low, 24px)) saturate(var(--perf-saturate, 160%));
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.glass-medium {
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(var(--perf-blur-medium, 28px)) saturate(var(--perf-saturate, 160%));
  -webkit-backdrop-filter: blur(var(--perf-blur-medium, 28px)) saturate(var(--perf-saturate, 160%));
  border: 1px solid rgba(148, 163, 184, 0.15);
}

.glass-strong {
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(var(--perf-blur-high, 32px)) saturate(var(--perf-saturate, 160%));
  -webkit-backdrop-filter: blur(var(--perf-blur-high, 32px)) saturate(var(--perf-saturate, 160%));
  border: 1px solid rgba(148, 163, 184, 0.18);
}

/* Hover Lift Effect */
.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

/* Glow on Focus/Hover */
.glow-on-hover {
  transition: box-shadow var(--transition-base);
}

.glow-on-hover:hover {
  box-shadow: var(--shadow-glow-md);
}

/* Card Styles */
.card-interactive {
  transition: 
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-slow);
}

.card-interactive:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: 
    0 20px 50px rgba(2, 6, 23, 0.4),
    var(--shadow-glow-sm);
  border-color: rgba(148, 163, 184, 0.25);
}

/* ============================================
   MOBILE PERFORMANCE OPTIMIZATIONS
   ============================================ */

/* Mobile-specific blur reduction (major GPU savings) */
@media (max-width: 768px) {
  :root:not([data-performance='low']) {
    --perf-blur-high: 16px;
    --perf-blur-medium: 12px;
    --perf-blur-low: 8px;
    --perf-saturate: 130%;
  }
  
  :root[data-performance='medium'] {
    --perf-blur-high: 12px;
    --perf-blur-medium: 8px;
    --perf-blur-low: 6px;
    --perf-saturate: 120%;
  }
}

/* Touch device optimizations */
@media (pointer: coarse) {
  /* Disable hover effects that cause sticky states on touch */
  .hover-lift:hover {
    transform: none;
  }
  
  /* Active state for touch feedback */
  .hover-lift:active {
    transform: scale(0.98);
  }
  
  .card-interactive:hover {
    transform: none;
    box-shadow: none;
  }
  
  .card-interactive:active {
    transform: scale(0.99);
    background: rgba(148, 163, 184, 0.08);
  }
}

/* GPU acceleration for animated elements */
.gpu-accelerated {
  transform: translateZ(0);
  will-change: transform;
  backface-visibility: hidden;
}

/* CSS Containment for performance */
.contain-layout {
  contain: layout;
}

.contain-paint {
  contain: paint;
}

.contain-strict {
  contain: strict;
}

.contain-content {
  contain: content;
}

/* Off-screen content optimization */
.content-visibility-auto {
  content-visibility: auto;
  contain-intrinsic-size: auto 300px;
}

/* ============================================
   TOUCH-FRIENDLY DEFAULTS
   ============================================ */

/* Minimum touch target size (44px as per Apple/Google guidelines) */
.touch-target {
  min-height: 44px;
  min-width: 44px;
}

.touch-target-lg {
  min-height: 48px;
  min-width: 48px;
}

/* Remove tap highlight on mobile */
* {
  -webkit-tap-highlight-color: transparent;
}

/* Safe area padding for notched devices */
.safe-area-top {
  padding-top: env(safe-area-inset-top, 0);
}

.safe-area-bottom {
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.safe-area-left {
  padding-left: env(safe-area-inset-left, 0);
}

.safe-area-right {
  padding-right: env(safe-area-inset-right, 0);
}

.safe-area-x {
  padding-left: env(safe-area-inset-left, 0);
  padding-right: env(safe-area-inset-right, 0);
}

.safe-area-y {
  padding-top: env(safe-area-inset-top, 0);
  padding-bottom: env(safe-area-inset-bottom, 0);
}

/* ============================================
   REDUCED MOTION PREFERENCES
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .gradient-text-hero {
    animation: none;
    background-size: 100% 100%;
  }
}

/* ============================================
   EFFICIENT MOBILE ANIMATIONS
   ============================================ */

/* Simple fade for mobile (no transforms = cheaper) */
@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fade-out {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* Slide animations using transform (GPU-accelerated) */
@keyframes slide-up {
  from { 
    opacity: 0;
    transform: translateY(10px);
  }
  to { 
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slide-down {
  from { 
    opacity: 0;
    transform: translateY(-10px);
  }
  to { 
    opacity: 1;
    transform: translateY(0);
  }
}

/* Pulse for loading states */
@keyframes pulse-subtle {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.animate-pulse-subtle {
  animation: pulse-subtle 2s ease-in-out infinite;
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */

/* Custom scrollbar for webkit browsers */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.3);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.3);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.5);
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: rgba(148, 163, 184, 0.3) rgba(15, 23, 42, 0.3);
}

/* figtree-regular - latin_latin-ext */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Figtree';
  font-style: normal;
  font-weight: 400;
  src: url('/fonts/figtree-v9-latin_latin-ext-regular.woff2') format('woff2'), /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
       url('/fonts/figtree-v9-latin_latin-ext-regular.ttf') format('truetype'); /* Chrome 4+, Firefox 3.5+, IE 9+, Safari 3.1+, iOS 4.2+, Android Browser 2.2+ */
}
/* figtree-italic - latin_latin-ext */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Figtree';
  font-style: italic;
  font-weight: 400;
  src: url('/fonts/figtree-v9-latin_latin-ext-italic.woff2') format('woff2'), /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
       url('/fonts/figtree-v9-latin_latin-ext-italic.ttf') format('truetype'); /* Chrome 4+, Firefox 3.5+, IE 9+, Safari 3.1+, iOS 4.2+, Android Browser 2.2+ */
}
/* figtree-700 - latin_latin-ext */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Figtree';
  font-style: normal;
  font-weight: 700;
  src: url('/fonts/figtree-v9-latin_latin-ext-700.woff2') format('woff2'), /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
       url('/fonts/figtree-v9-latin_latin-ext-700.ttf') format('truetype'); /* Chrome 4+, Firefox 3.5+, IE 9+, Safari 3.1+, iOS 4.2+, Android Browser 2.2+ */
}
/* figtree-700italic - latin_latin-ext */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Figtree';
  font-style: italic;
  font-weight: 700;
  src: url('/fonts/figtree-v9-latin_latin-ext-700italic.woff2') format('woff2'), /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
       url('/fonts/figtree-v9-latin_latin-ext-700italic.ttf') format('truetype'); /* Chrome 4+, Firefox 3.5+, IE 9+, Safari 3.1+, iOS 4.2+, Android Browser 2.2+ */
}