/* =========================================================
   UNIFIED DARK THEME v3.0 - COMPREHENSIVE DESIGN SYSTEM
   =========================================================
   Combines: Brutalist + Minimalist + Corporate + Enterprise + Antfu Elegance

   Reference Inspirations:
   - astromaxx.com (Brutalist precision)
   - litos.com (Minimalist purity)
   - dato-multilaunch.vercel.app (Corporate sleek)
   - one.ie (Enterprise brevity)
   - antfu.me (Elegant refinement)
   ========================================================= */

/* === ROOT DESIGN TOKENS - COMPREHENSIVE SYSTEM === */
:root {
  /* === COLOR FOUNDATION - DEEP DARK HIERARCHY === */

  /* Pure Black Base (Brutalist foundation) */
  --color-void: #000000;
  --color-primary: #0a0a0a;      /* Main background */
  --color-secondary: #111111;    /* Secondary surfaces */
  --color-tertiary: #181818;     /* Tertiary elements */
  --color-elevated: #1f1f1f;     /* Elevated surfaces */
  --color-surface: #151515;      /* Card backgrounds */
  --color-overlay: rgba(0, 0, 0, 0.96);

  /* Glass Effects (Corporate/Enterprise) */
  --color-glass: rgba(15, 15, 15, 0.85);
  --color-glass-light: rgba(20, 20, 20, 0.90);
  --color-glass-dark: rgba(10, 10, 10, 0.95);

  /* Text Hierarchy (Minimalist clarity) */
  --text-primary: #ffffff;       /* Pure white for max contrast */
  --text-secondary: #e8e8e8;     /* Subtle secondary text */
  --text-tertiary: #b8b8b8;      /* Supporting text */
  --text-muted: #8a8a8a;         /* Muted text */
  --text-subtle: #666666;        /* Subtle hints */
  --text-disabled: #444444;      /* Disabled state */

  /* Accent System - Green Primary (Pixelated Empathy) */
  --accent-emerald: #10b981;
  --accent-emerald-light: #34d399;
  --accent-emerald-dark: #059669;
  --accent-emerald-subtle: rgba(16, 185, 129, 0.1);
  --accent-emerald-muted: rgba(16, 185, 129, 0.2);

  /* Secondary Accents (Corporate palette) */
  --accent-blue: #3b82f6;
  --accent-blue-light: #60a5fa;
  --accent-blue-dark: #2563eb;
  --accent-purple: #8b5cf6;
  --accent-purple-light: #a78bfa;
  --accent-purple-dark: #7c3aed;
  --accent-orange: #f59e0b;
  --accent-red: #ef4444;
  --accent-yellow: #eab308;

  /* Status Colors (Enterprise system) */
  --status-success: #10b981;
  --status-warning: #f59e0b;
  --status-error: #ef4444;
  --status-info: #3b82f6;

  /* === BORDERS & DIVIDERS === */
  --border-primary: rgba(255, 255, 255, 0.08);   /* Main borders */
  --border-secondary: rgba(255, 255, 255, 0.06); /* Secondary borders */
  --border-subtle: rgba(255, 255, 255, 0.04);    /* Subtle dividers */
  --border-accent: var(--accent-emerald);        /* Accent borders */
  --border-hover: rgba(16, 185, 129, 0.35);      /* Hover states */
  --border-focus: rgba(59, 130, 246, 0.5);       /* Focus states */

  /* === SHADOW SYSTEM - DARK MODE OPTIMIZED === */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3), 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.2), 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15), 0 10px 10px rgba(0, 0, 0, 0.05);
  --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(16, 185, 129, 0.15);
  --shadow-glow-blue: 0 0 20px rgba(59, 130, 246, 0.15);

  /* === SPACING SYSTEM - 8-POINT GRID === */
  --space-0: 0;
  --space-px: 1px;
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */

  /* === TYPOGRAPHY SYSTEM - FLUID SCALE === */
  /* Font Families */
  --font-sans: 'Geist Sans', 'Inter Variable', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;
  --font-display: 'Geist Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Fluid Type Scale - Refined for Elegance (Mizu-inspired) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.3vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.2vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1.05rem + 0.3vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.15rem + 0.4vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.4rem + 0.4vw, 1.875rem);
  --text-3xl: clamp(1.875rem, 1.7rem + 0.6vw, 2.25rem);
  --text-4xl: clamp(2.25rem, 2rem + 0.8vw, 3rem);
  --text-5xl: clamp(3rem, 2.5rem + 1.2vw, 4.5rem);
  --text-6xl: clamp(3.75rem, 3rem + 1.8vw, 6rem);

  /* Enhanced fluid scale with optimized clamp values for better readability */
  --text-xs-opt: clamp(0.75rem, 0.72rem + 0.18vw, 0.875rem);
  --text-sm-opt: clamp(0.875rem, 0.82rem + 0.28vw, 1rem);
  --text-base-opt: clamp(1rem, 0.97rem + 0.18vw, 1.125rem);
  --text-lg-opt: clamp(1.125rem, 1.07rem + 0.28vw, 1.25rem);
  --text-xl-opt: clamp(1.25rem, 1.17rem + 0.38vw, 1.5rem);
  --text-2xl-opt: clamp(1.5rem, 1.42rem + 0.38vw, 1.875rem);
  --text-3xl-opt: clamp(1.875rem, 1.72rem + 0.58vw, 2.25rem);
  --text-4xl-opt: clamp(2.25rem, 2.02rem + 0.78vw, 3rem);
  --text-5xl-opt: clamp(3rem, 2.52rem + 1.18vw, 4.5rem);
  --text-6xl-opt: clamp(3.75rem, 3.02rem + 1.78vw, 6rem);

  /* Font Weights */
  --weight-light: 300;
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-extrabold: 800;
  --weight-black: 900;

  /* Line Heights - Refined for Typographic Rhythm (Mizu-inspired) */
  --leading-none: 1;
  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.6;
  --leading-relaxed: 1.8;
  --leading-loose: 2.2;

  /* Letter Spacing */
  --tracking-tighter: -0.05em;
  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.1em;

  /* === BORDER RADIUS SYSTEM === */
  --radius-none: 0;
  --radius-sm: 0.125rem;    /* 2px */
  --radius-md: 0.375rem;    /* 6px */
  --radius-lg: 0.5rem;      /* 8px */
  --radius-xl: 0.75rem;     /* 12px */
  --radius-2xl: 1rem;       /* 16px */
  --radius-3xl: 1.5rem;     /* 24px */
  --radius-full: 9999px;    /* Full circle */

  /* === TRANSITIONS - ENTERPRISE GRADE === */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);

  /* === Z-INDEX LAYERS === */
  --z-base: 1;
  --z-elevated: 10;
  --z-sticky: 50;
  --z-dropdown: 100;
  --z-overlay: 200;
  --z-modal: 300;
  --z-tooltip: 400;
  --z-toast: 500;
  --z-max: 9999;

  /* === GRADIENTS - SOPHISTICATED BLENDS === */
  --gradient-primary: linear-gradient(135deg, var(--accent-emerald) 0%, var(--accent-emerald-light) 50%, var(--accent-blue) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 50%, var(--accent-emerald) 100%);
  --gradient-tertiary: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-emerald) 50%, var(--accent-blue) 100%);
  --gradient-warm: linear-gradient(135deg, var(--accent-orange) 0%, var(--accent-yellow) 50%, var(--accent-emerald) 100%);
  --gradient-cool: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-emerald) 50%, var(--accent-purple) 100%);
  --gradient-text: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-emerald) 50%, var(--accent-blue) 100%);
  --gradient-surface: linear-gradient(135deg, var(--color-surface) 0%, var(--color-secondary) 100%);
  --gradient-glass: linear-gradient(135deg, var(--color-glass) 0%, var(--color-glass-light) 100%);

  /* === MESH GRADIENTS - ENTERPRISE VISUALS === */
  --mesh-1: radial-gradient(circle at 20% 80%, rgba(16, 185, 129, 0.1) 0%, transparent 50%),
            radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
            radial-gradient(circle at 40% 40%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);

  --mesh-2: radial-gradient(circle at 60% 20%, rgba(16, 185, 129, 0.08) 0%, transparent 50%),
            radial-gradient(circle at 20% 60%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
            radial-gradient(circle at 80% 80%, rgba(245, 158, 11, 0.04) 0%, transparent 50%);

  /* Subtle, refined mesh gradients for enhanced elegance */
  --mesh-3: radial-gradient(circle at 30% 70%, rgba(16, 185, 129, 0.05) 0%, transparent 60%),
            radial-gradient(circle at 70% 30%, rgba(59, 130, 246, 0.05) 0%, transparent 60%),
            radial-gradient(circle at 50% 50%, rgba(139, 92, 246, 0.02) 0%, transparent 70%);

  --mesh-4: radial-gradient(circle at 25% 75%, rgba(139, 92, 246, 0.04) 0%, transparent 65%),
            radial-gradient(circle at 75% 25%, rgba(59, 130, 246, 0.04) 0%, transparent 65%),
            radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.02) 0%, transparent 75%);

  --mesh-5: radial-gradient(circle at 30% 70%, rgba(255, 255, 255, 0.02) 0%, transparent 60%),
            radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.01) 0%, transparent 60%),
            radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.005) 0%, transparent 70%);

  /* New subtle mesh gradients for enhanced visual depth (Mizu-inspired) */
  --mesh-6: radial-gradient(circle at 40% 60%, rgba(16, 185, 129, 0.03) 0%, transparent 70%),
            radial-gradient(circle at 60% 40%, rgba(59, 130, 246, 0.03) 0%, transparent 70%),
            radial-gradient(circle at 50% 50%, rgba(139, 92, 246, 0.01) 0%, transparent 80%);

  --mesh-7: radial-gradient(circle at 35% 65%, rgba(139, 92, 246, 0.025) 0%, transparent 75%),
            radial-gradient(circle at 65% 35%, rgba(16, 185, 129, 0.025) 0%, transparent 75%),
            radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.015) 0%, transparent 85%);
}

/* === DARK THEME CONTEXT === */
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
  }
}

/* === BASE RESET & TYPOGRAPHY === */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  background: var(--color-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  -webkit-text-size-adjust: 100%;
}

/* === HEADING SYSTEM - Refined for Elegance (Mizu-inspired) === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
}

h1 {
  font-size: var(--text-6xl);
  font-weight: var(--weight-black);
  letter-spacing: var(--tracking-tighter);
  text-shadow: 0 3px 12px rgba(16, 185, 129, 0.15);
}
h2 {
  font-size: var(--text-5xl);
  font-weight: var(--weight-extrabold);
  letter-spacing: var(--tracking-tight);
  text-shadow: 0 2.5px 10px rgba(16, 185, 129, 0.12);
}
h3 {
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-tight);
  text-shadow: 0 2px 8px rgba(16, 185, 129, 0.1);
}
h4 {
  font-size: var(--text-3xl);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-tight);
  text-shadow: 0 1.5px 6px rgba(16, 185, 129, 0.08);
}
h5 {
  font-size: var(--text-2xl);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-normal);
  text-shadow: 0 1px 4px rgba(16, 185, 129, 0.06);
}
h6 {
  font-size: var(--text-xl);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-normal);
  text-shadow: 0 0.5px 2px rgba(16, 185, 129, 0.04);
}

/* === BRUTALIST BUTTON SYSTEM === */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
  white-space: nowrap;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Button Variants */
.btn-primary {
  background: var(--accent-emerald);
  color: var(--color-void);
  border-color: var(--accent-emerald);
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-emerald-light);
  border-color: var(--accent-emerald-light);
  transform: translateY(-2px) scale(1.03);
  box-shadow: var(--shadow-glow), 0 0 40px rgba(16, 185, 129, 0.3);
  transition: all var(--transition-spring);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
  background: var(--accent-emerald-dark);
  border-color: var(--accent-emerald-dark);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-primary);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-secondary);
  border-color: var(--accent-emerald);
  color: var(--accent-emerald);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
  background: var(--accent-emerald-subtle);
  color: var(--accent-emerald);
}

.btn-outline {
  background: transparent;
  color: var(--accent-emerald);
  border-color: var(--accent-emerald);
}

.btn-outline:hover:not(:disabled) {
  background: var(--accent-emerald);
  color: var(--color-void);
}

/* Button Sizes */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn-xl {
  padding: var(--space-6) var(--space-12);
  font-size: var(--text-lg);
}

/* === ENHANCED CARD SYSTEM === */
.card {
  background: var(--color-surface);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  backface-visibility: hidden;
  transform-style: preserve-3d;
}

.card:hover {
  background: var(--color-secondary);
  border-color: var(--border-secondary);
  box-shadow: var(--shadow-xl);
}

/* Parallax Tilt Effect for Cards */
.card--tilt {
  perspective: 1000px;
}

.card--tilt .card {
  transition: transform 0.1s ease-out;
  transform-style: preserve-3d;
}

.card--tilt:hover .card {
  transform: rotateX(5deg) rotateY(5deg) scale(1.02);
  box-shadow: var(--shadow-2xl);
}

/* For touch devices - reduced sensitivity */
@media (hover: none) {
  .card--tilt:hover .card {
    transform: rotateX(2deg) rotateY(2deg) scale(1.01);
    box-shadow: var(--shadow-xl);
  }
}

/* Enhanced card hover with subtle scale increase */
.card:hover {
  background: var(--color-secondary);
  border-color: var(--border-secondary);
  box-shadow: var(--shadow-xl);
  transform: scale(1.01);
}

/* Card hover with enhanced depth */
.card--elevated:hover {
  box-shadow: var(--shadow-2xl);
}

/* Card hover with enhanced glass effect */
.card--glass:hover {
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.card--elevated {
  background: var(--gradient-surface);
  border: 1px solid var(--border-secondary);
}

.card--glass {
  background: var(--color-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card--mesh {
  background: var(--mesh-1), var(--color-surface);
  border: 1px solid var(--border-primary);
}

.card--brutalist {
  border: 2px solid var(--border-primary);
  border-radius: var(--radius-md);
}

.card--minimal {
  background: var(--color-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

/* === INPUT SYSTEM === */
.input {
  width: 100%;
  background: var(--color-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  transition: all var(--transition-fast);
}

.input:focus {
  outline: none;
  border-color: var(--accent-emerald);
  background: var(--color-tertiary);
  box-shadow: 0 0 0 3px var(--accent-emerald-subtle);
}

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

.input--large {
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-lg);
}

.input--small {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
}

/* === NAVIGATION SYSTEM === */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__link {
  position: relative;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: var(--weight-medium);
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav__link:hover {
  color: var(--accent-emerald);
  background: var(--accent-emerald-subtle);
}

.nav__link--active {
  color: var(--accent-emerald);
  background: var(--accent-emerald-muted);
}

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 60%;
  height: 2px;
  background: var(--accent-emerald);
  transform: translateX(-50%);
}

/* === BADGE SYSTEM === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  border-radius: var(--radius-full);
  border: 1px solid;
}

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

.badge--info {
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-blue);
  border-color: var(--accent-blue);
}

.badge--warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent-orange);
  border-color: var(--accent-orange);
}

.badge--error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--accent-red);
  border-color: var(--accent-red);
}

/* === GRID SYSTEM === */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.grid--dense {
  gap: var(--space-4);
}

.grid--loose {
  gap: var(--space-8);
}

/* === ANIMATION SYSTEM === */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 20px rgba(16, 185, 129, 0.1); }
  50% { box-shadow: 0 0 30px rgba(16, 185, 129, 0.2); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Utility Classes */
.animate-fade-in {
  animation: fadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.animate-pulse-glow {
  animation: pulseGlow 2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

/* === ACCESSIBILITY === */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-contrast: high) {
  :root {
    --border-primary: rgba(255, 255, 255, 0.2);
    --text-muted: #aaaaaa;
  }
}

/* Focus styles - Enhanced for accessibility */
*:focus-visible {
  outline: 4px solid var(--accent-emerald);
  outline-offset: 4px;
  box-shadow: 0 0 0 1px var(--color-primary), 0 0 0 6px rgba(16, 185, 129, 0.4);
  z-index: 10;
  border-radius: var(--radius-md);
}

/* Focus styles for buttons */
.btn:focus-visible {
  outline: 3px solid var(--accent-emerald);
  outline-offset: 3px;
  box-shadow: 0 0 0 1px var(--color-primary), 0 0 0 4px rgba(16, 185, 129, 0.3);
}

/* Focus styles for navigation links */
.nav__link:focus-visible {
  outline: 3px solid var(--accent-emerald);
  outline-offset: 3px;
  box-shadow: 0 0 0 1px var(--color-primary), 0 0 0 4px rgba(16, 185, 129, 0.3);
}

/* Focus styles for form inputs */
.input:focus-visible {
  outline: none;
  border-color: var(--accent-emerald);
  background: var(--color-tertiary);
  box-shadow: 0 0 0 3px var(--accent-emerald-subtle), 0 0 0 6px rgba(16, 185, 129, 0.2);
}

/* Focus styles for mobile navigation toggle */
.mobile-nav-toggle:focus-visible {
  outline: 3px solid var(--accent-emerald);
  outline-offset: 3px;
  box-shadow: 0 0 0 1px var(--color-primary), 0 0 0 4px rgba(16, 185, 129, 0.3);
}

/* Focus styles for mobile navigation menu */
.mobile-nav-menu .nav__link:focus-visible {
  outline: 3px solid var(--accent-emerald);
  outline-offset: 3px;
  box-shadow: 0 0 0 1px var(--color-primary), 0 0 0 4px rgba(16, 185, 129, 0.3);
}

/* Focus styles for badges */
.badge:focus-visible {
  outline: 3px solid var(--accent-emerald);
  outline-offset: 3px;
  box-shadow: 0 0 0 1px var(--color-primary), 0 0 0 4px rgba(16, 185, 129, 0.3);
}

/* Focus styles for links */
a:focus-visible {
  outline: 3px solid var(--accent-emerald);
  outline-offset: 3px;
  box-shadow: 0 0 0 1px var(--color-primary), 0 0 0 4px rgba(16, 185, 129, 0.3);
}

/* Focus styles for checkboxes and radio buttons */
input[type="checkbox"]:focus-visible,
input[type="radio"]:focus-visible {
  outline: 3px solid var(--accent-emerald);
  outline-offset: 3px;
  box-shadow: 0 0 0 1px var(--color-primary), 0 0 0 4px rgba(16, 185, 129, 0.3);
}

/* Focus styles for select elements */
select:focus-visible {
  outline: 3px solid var(--accent-emerald);
  outline-offset: 3px;
  box-shadow: 0 0 0 1px var(--color-primary), 0 0 0 4px rgba(16, 185, 129, 0.3);
}

/* Selection styles */
::selection {
  background: var(--accent-emerald-muted);
  color: var(--text-primary);
}

/* === RESPONSIVE UTILITIES === */
@media (max-width: 768px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .nav {
    gap: var(--space-4);
  }

  .card {
    padding: var(--space-4);
  }

  /* Optimize for mobile performance */
  .card--tilt,
  .mobile-nav-menu,
  .mobile-nav-toggle {
    will-change: transform;
  }
}

/* Cross-browser compatibility for older browsers */
@media (max-width: 1024px) {
  /* Add vendor prefixes for older WebKit browsers */
  .glass-card,
  .mobile-nav-menu,
  .mobile-nav-toggle {
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
  }

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

/* Ensure CSS grid works in older browsers */
@supports not (display: grid) {
  .grid--2,
  .grid--3,
  .grid--4 {
    display: flex;
    flex-direction: column;
  }

  .grid--2 > * {
    margin-bottom: var(--space-6);
  }

  .grid--2 > *:last-child {
    margin-bottom: 0;
  }
}

/* Ensure flexbox works in older browsers */
@supports not (display: flex) {
  .nav {
    display: block;
  }

  .nav__link {
    display: block;
    margin-bottom: var(--space-2);
  }

  .nav__link:last-child {
    margin-bottom: 0;
  }
}

/* Ensure border-radius works in older browsers */
@supports not (border-radius: 1px) {
  .btn,
  .card,
  .input,
  .badge,
  .mobile-nav-toggle,
  .mobile-nav-menu {
    border-radius: 0 !important;
  }
}

/* Ensure box-shadow works in older browsers */
@supports not (box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1)) {
  .btn,
  .card,
  .mobile-nav-toggle,
  .mobile-nav-menu {
    border: 1px solid var(--border-primary) !important;
    box-shadow: none !important;
  }
}

/* Ensure transform works in older browsers */
@supports not (transform: translateX(0)) {
  .card--tilt:hover .card {
    transform: none !important;
  }

  .btn:hover {
    transform: none !important;
  }

  .mobile-nav-menu {
    transform: none !important;
  }
}

/* Ensure animation works in older browsers */
@supports not (animation: test 1s) {
  .animate-fade-in,
  .animate-fade-in-up,
  .animate-pulse,
  .animate-pulse-glow,
  .loading-shimmer,
  .status-dot--warning {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
  }
}

/* Mobile Navigation Enhancements */
.mobile-nav-toggle {
  display: none;
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-dropdown);
  width: 44px;
  height: 44px;
  background: var(--color-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-spring);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.mobile-nav-toggle:hover {
  background: var(--color-elevated);
  transform: scale(1.05) translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.mobile-nav-toggle:focus {
  outline: 2px solid var(--accent-emerald);
  outline-offset: 2px;
}

.mobile-nav-toggle::before,
.mobile-nav-toggle::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background: currentColor;
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.mobile-nav-toggle::before {
  transform: translateY(-6px);
}

.mobile-nav-toggle::after {
  transform: translateY(6px);
}

.mobile-nav-toggle.menu-open::before {
  transform: rotate(45deg) translateY(0);
}

.mobile-nav-toggle.menu-open::after {
  transform: rotate(-45deg) translateY(0);
}

.mobile-nav-menu {
  position: fixed;
  top: 0;
  left: -100%;
  width: 80%;
  max-width: 300px;
  height: 100vh;
  background: var(--color-primary);
  z-index: var(--z-dropdown);
  padding: var(--space-8) var(--space-6);
  overflow-y: auto;
  transition: left 0.3s var(--transition-spring);
  box-shadow: var(--shadow-2xl);
  will-change: left;
  backface-visibility: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-right: 1px solid var(--border-primary);
}

.mobile-nav-menu.open {
  left: 0;
}

.mobile-nav-menu::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--mesh-6);
  z-index: -1;
}

.mobile-nav-menu .nav {
  flex-direction: column;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.mobile-nav-menu .nav__link {
  display: block;
  width: 100%;
  text-align: left;
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-md);
  margin: 0;
  transition: all var(--transition-normal);
}

.mobile-nav-menu .nav__link:hover {
  background: var(--accent-emerald-subtle);
  color: var(--accent-emerald);
  transform: translateX(5px);
}

.mobile-nav-menu .nav__link--active {
  background: var(--accent-emerald-muted);
  color: var(--accent-emerald);
  font-weight: var(--weight-bold);
}

.mobile-nav-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: var(--z-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s var(--transition-spring), visibility 0.3s;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.mobile-nav-backdrop.open {
  opacity: 1;
  visibility: visible;
}

/* Ensure mobile nav works with reduced motion */
@media (prefers-reduced-motion: reduce) {
  .mobile-nav-toggle,
  .mobile-nav-menu,
  .mobile-nav-backdrop {
    transition: none !important;
  }
}

/* Make mobile nav accessible */
.mobile-nav-menu[aria-hidden="true"] {
  pointer-events: none;
}

.mobile-nav-menu[aria-hidden="false"] {
  pointer-events: all;
}

/* === ENTERPRISE ENHANCEMENTS === */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-20) 0;
}

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-primary), transparent);
  margin: var(--space-8) 0;
}

/* Status indicators */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  position: relative;
}

.status-dot--online {
  background: var(--status-success);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
}

.status-dot--warning {
  background: var(--status-warning);
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.5);
  animation: pulse 2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.status-dot--error {
  background: var(--status-error);
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.5);
}

/* Loading states */
.loading-shimmer {
  background: linear-gradient(90deg, var(--color-secondary) 25%, var(--color-tertiary) 50%, var(--color-secondary) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

/* === ADVANCED COMPONENTS === */
.glass-card {
  background: var(--color-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

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

.mesh-background {
  background: var(--mesh-1);
  position: relative;
}

/* Utility classes for applying mesh gradients */
.mesh-1 {
  background: var(--mesh-1);
}

.mesh-2 {
  background: var(--mesh-2);
}

.mesh-3 {
  background: var(--mesh-3);
}

.mesh-4 {
  background: var(--mesh-4);
}

.mesh-5 {
  background: var(--mesh-5);
}

/* Combined mesh gradients with other backgrounds */
.mesh-bg-1 {
  background: var(--mesh-1), var(--color-surface);
}

.mesh-bg-2 {
  background: var(--mesh-2), var(--color-surface);
}

.mesh-bg-3 {
  background: var(--mesh-3), var(--color-surface);
}

.mesh-bg-4 {
  background: var(--mesh-4), var(--color-surface);
}

.mesh-bg-5 {
  background: var(--mesh-5), var(--color-surface);
}

/* Mesh gradients for elevated surfaces */
.mesh-elevated-1 {
  background: var(--mesh-1), var(--color-elevated);
}

.mesh-elevated-2 {
  background: var(--mesh-2), var(--color-elevated);
}

.mesh-elevated-3 {
  background: var(--mesh-3), var(--color-elevated);
}

.mesh-elevated-4 {
  background: var(--mesh-4), var(--color-elevated);
}

.mesh-elevated-5 {
  background: var(--mesh-5), var(--color-elevated);
}

.elegant-surface {
  background: linear-gradient(135deg, var(--color-surface), var(--color-secondary));
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.elegant-surface::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, transparent, rgba(16, 185, 129, 0.03));
  pointer-events: none;
}

/* === THEME APPLICATION === */
.theme-dark {
  background: var(--color-primary);
  color: var(--text-primary);
}

.theme-dark * {
  border-color: var(--border-primary);
}

/* === FINAL TOUCHES === */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-mono { font-family: var(--font-mono); }
.font-sans { font-family: var(--font-sans); }
.font-display { font-family: var(--font-display); }

/* Color utilities */
.text-emerald { color: var(--accent-emerald); }
.text-blue { color: var(--accent-blue); }
.text-purple { color: var(--accent-purple); }
.text-orange { color: var(--accent-orange); }
.text-red { color: var(--accent-red); }

.bg-emerald { background-color: var(--accent-emerald); }
.bg-blue { background-color: var(--accent-blue); }
.bg-purple { background-color: var(--accent-purple); }

.border-emerald { border-color: var(--accent-emerald); }
.border-blue { border-color: var(--accent-blue); }
.border-purple { border-color: var(--accent-purple); }