:root {
  /* Enhanced Color Palette */
  --bg: #0a0f1c;
  --bg-secondary: #0f1419;
  --fg: #f8fafc;
  --fg-secondary: #e2e8f0;
  --muted: #94a3b8;
  --brand: #0ea5e9;
  --brand-light: #38bdf8;
  --brand-dark: #0284c7;
  --primary: #1e293b;
  --primary-light: #334155;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --card: #1a202c;
  --border: rgba(255, 255, 255, 0.1);
  --border-light: rgba(255, 255, 255, 0.2);
  --glass: rgba(255, 255, 255, 0.05);
  --glass-strong: rgba(255, 255, 255, 0.1);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Typography */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}
/* Reset and Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: 'Cairo', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  font-size: var(--font-size-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a:hover {
  color: var(--brand-light);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Utility Classes */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.muted { color: var(--muted); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.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;
}

/* Typography */
.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }
.text-4xl { font-size: var(--font-size-4xl); }
.text-5xl { font-size: var(--font-size-5xl); }

.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-black { font-weight: 900; }

.success { color: var(--success); }
.warning { color: var(--warning); }
.error { color: var(--error); }

/* ====== Layout ====== */
.page-wrapper {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* ================= Preloader ================= */
#preloader-overlay {
  position: fixed;
  z-index: 9999;
  inset: 0;
  width: 100vw;
  height: 100vh;
  background: linear-gradient(120deg, #0a0f1c 60%, #101a3c 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  direction: ltr;
}
#preloader-canvas {
  position: absolute;
  width: 100vw;
  height: 100vh;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 1;
}
#preloader-fade {
  position: absolute;
  inset: 0;
  background: #0a0f1c;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.8s cubic-bezier(.4,0,.2,1);
  z-index: 10;
}
#preloader-overlay.fade-out #preloader-fade {
  opacity: 1;
}

/* Capsules */
.capsule-3d {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 48px;
  z-index: 3;
  pointer-events: none;
}

/* Hexagon molecular pattern */
#preloader-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('data:image/svg+xml;utf8,<svg width="1200" height="800" xmlns="http://www.w3.org/2000/svg"><g opacity="0.07"> <polygon points="30,15 45,25.98 45,44.02 30,55 15,44.02 15,25.98" fill="none" stroke="%23fff" stroke-width="1.5"/></g></svg>');
  background-size: 120px 80px;
  background-repeat: repeat;
  z-index: 0;
}

/* Glowing orb */
.preloader-orb {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 60px;
  height: 60px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, #fff 0%, #4ecdc4 40%, #0ea5e9 100%);
  box-shadow: 0 0 40px 20px #4ecdc4, 0 0 90px 40px #0ea5e9;
  opacity: 0.95;
  animation: orb-pulse 1.2s infinite alternate;
  z-index: 5;
}
@keyframes orb-pulse {
  to { box-shadow: 0 0 60px 30px #4ecdc4, 0 0 120px 60px #0ea5e9; opacity: 1; }
}

/* Particles */
.preloader-particle {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #fff;
  opacity: 0.8;
  filter: blur(0.5px);
  z-index: 4;
  pointer-events: none;
  box-shadow: 0 0 8px 2px #fff8;
  animation: particle-move 2s cubic-bezier(.4,0,.2,1) forwards;
}
@keyframes particle-move {
  0% { opacity: 0; transform: scale(0.5) translateY(0); }
  20% { opacity: 1; }
  100% { opacity: 0; transform: scale(1.3) translateY(-120px) rotate(180deg); }
}

/* Sparks */
.preloader-spark {
  position: absolute;
  width: 3px;
  height: 20px;
  border-radius: 2px;
  background: linear-gradient(180deg, #fff 0%, #fbbf24 100%);
  opacity: 0.7;
  filter: blur(0.5px);
  z-index: 4;
  pointer-events: none;
  animation: spark-fly 0.7s cubic-bezier(.4,0,.2,1) forwards;
}
@keyframes spark-fly {
  0% { opacity: 0.7; transform: scaleY(0.5) translateY(0); }
  100% { opacity: 0; transform: scaleY(1.3) translateY(-80px) rotate(90deg); }
}

/* Fade out overlay */
#preloader-overlay.fade-out {
  pointer-events: none;
  animation: preloader-fadeout 0.8s cubic-bezier(.4,0,.2,1) forwards;
}
@keyframes preloader-fadeout {
  to { opacity: 0; visibility: hidden; }
}

/* ================= End Preloader ================= */

/* Background Effects */
.page-wrapper::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(14, 165, 233, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(245, 158, 11, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(16, 185, 129, 0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

/* ====== Enhanced Header ====== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  background: rgba(10, 15, 28, 0.95);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  transition: all var(--transition);
}

.site-header.scrolled {
  background: rgba(10, 15, 28, 0.98);
  border-bottom-color: var(--border-light);
  box-shadow: var(--shadow-lg);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  gap: var(--space-4);
  position: relative;
}

.brand {
  display: flex;
  flex-direction: column;
  transition: transform var(--transition);
  cursor: pointer;
}

.brand:hover {
  transform: translateY(-1px);
}

.brand-title {
  font-weight: 900;
  font-size: var(--font-size-xl);
  letter-spacing: -0.025em;
  background: linear-gradient(135deg, var(--fg), var(--brand-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brand-sub {
  font-size: var(--font-size-sm);
  color: var(--muted);
  font-weight: 500;
}

/* ====== Enhanced Navigation ====== */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-nav ul {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav li {
  position: relative;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  font-weight: 500;
  font-size: var(--font-size-sm);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.site-nav a::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left var(--transition-slow);
}

.site-nav a:hover::before {
  left: 100%;
}

.site-nav a.active {
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  color: var(--bg);
  border-color: var(--brand-light);
  box-shadow: var(--shadow);
  font-weight: 600;
}

.site-nav a:hover {
  transform: translateY(-2px);
  background: var(--glass-strong);
  border-color: var(--border-light);
  box-shadow: var(--shadow);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  background: var(--primary);
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  width: 44px;
  height: 44px;
  justify-content: center;
  align-items: center;
}

.nav-toggle:hover {
  background: var(--primary-light);
  border-color: var(--border-light);
  transform: scale(1.05);
}

.nav-toggle .bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--fg);
  margin: 3px 0;
  transition: all var(--transition);
  border-radius: var(--radius-sm);
}

.nav-toggle.active .bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active .bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active .bar:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Navigation */
@media (max-width: 900px) {
  .site-nav ul {
    display: none;
    position: absolute;
    top: 80px;
    right: var(--space-4);
    left: var(--space-4);
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-2xl);
    padding: var(--space-4);
    box-shadow: var(--shadow-2xl);
    flex-direction: column;
    gap: var(--space-2);
    animation: slideDown 0.3s ease-out;
  }
  
  .site-nav.open ul {
    display: flex;
  }
  
  .site-nav li {
    width: 100%;
  }
  
  .site-nav a {
    width: 100%;
    justify-content: center;
    padding: var(--space-4);
    font-size: var(--font-size-base);
  }
  
  .nav-toggle {
    display: inline-flex;
  }
}

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

/* ====== Enhanced Hero Section ====== */
.hero {
  position: relative;
  padding: var(--space-16) 0 var(--space-12);
  border-bottom: 1px solid var(--border);
  background: 
    linear-gradient(135deg, rgba(14, 165, 233, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at top, rgba(245, 158, 11, 0.1) 0%, transparent 70%),
    radial-gradient(ellipse at bottom right, rgba(16, 185, 129, 0.05) 0%, transparent 70%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 20%, rgba(56, 189, 248, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(245, 158, 11, 0.1) 0%, transparent 50%);
  animation: heroBackground 20s ease-in-out infinite;
  pointer-events: none;
}

@keyframes heroBackground {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.1); }
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-12);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  animation: slideInLeft 1s ease-out;
}

.hero-content h1 {
  margin: 0 0 var(--space-4);
  font-size: var(--font-size-5xl);
  font-weight: 900;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--fg), var(--brand-light), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.hero-content p {
  color: var(--muted);
  margin: 0 0 var(--space-6);
  font-size: var(--font-size-lg);
  line-height: 1.7;
  max-width: 600px;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  align-items: center;
}

.hero-media {
  position: relative;
  min-height: 400px;
  animation: slideInRight 1s ease-out 0.2s both;
}

.hero-media .glow {
  position: absolute;
  inset: -10% -10% -20% -10%;
  background: conic-gradient(
    from 180deg at 50% 50%, 
    rgba(56, 189, 248, 0.2) 0deg,
    rgba(245, 158, 11, 0.15) 120deg,
    rgba(16, 185, 129, 0.1) 240deg,
    rgba(56, 189, 248, 0.2) 360deg
  );
  border-radius: 50%;
  filter: blur(40px);
  animation: float 15s ease-in-out infinite;
  opacity: 0.8;
}

.hero-media img {
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
  transition: transform var(--transition-slow);
}

.hero-media:hover img {
  transform: scale(1.05) rotate(2deg);
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes float {
  0%, 100% { 
    transform: translateY(0) rotate(0deg); 
  }
  25% { 
    transform: translateY(-20px) rotate(1deg); 
  }
  50% { 
    transform: translateY(-10px) rotate(-1deg); 
  }
  75% { 
    transform: translateY(-25px) rotate(0.5deg); 
  }
}

/* ====== Enhanced Sections & Cards ====== */
.section {
  padding: var(--space-16) 0;
  position: relative;
}

.section.alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  position: relative;
}

.section-header h2 {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  margin: 0;
  background: linear-gradient(135deg, var(--fg), var(--brand-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.card {
  border: 1px solid var(--border);
  background: linear-gradient(145deg, 
    rgba(255, 255, 255, 0.05) 0%, 
    rgba(255, 255, 255, 0.02) 100%);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  box-shadow: 
    0 1px 0 rgba(255, 255, 255, 0.1) inset,
    var(--shadow);
  transition: all var(--transition);
  will-change: transform;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--brand), var(--brand-light), var(--accent));
  opacity: 0;
  transition: opacity var(--transition);
}

.card:hover::before {
  opacity: 1;
}

.card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-2xl);
  border-color: var(--brand-light);
  background: linear-gradient(145deg, 
    rgba(255, 255, 255, 0.08) 0%, 
    rgba(255, 255, 255, 0.04) 100%);
}

.card .meta {
  font-size: var(--font-size-sm);
  color: var(--muted);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.card .title {
  font-weight: 700;
  font-size: var(--font-size-lg);
  line-height: 1.4;
  color: var(--fg);
  margin: var(--space-2) 0;
}

.card p {
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
  flex-grow: 1;
}
.badge {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--muted);
  background: var(--glass);
  transition: all var(--transition-fast);
}

.badge:hover {
  background: var(--glass-strong);
  border-color: var(--border-light);
  color: var(--fg-secondary);
  transform: scale(1.05);
}

.row {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  align-items: center;
}

/* ====== Enhanced Inputs & Toolbar ====== */
.input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  background: rgba(30, 41, 59, 0.5);
  color: var(--fg);
  font-size: var(--font-size-base);
  transition: all var(--transition);
  backdrop-filter: blur(10px);
}

.input:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
  background: rgba(30, 41, 59, 0.8);
}

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

.toolbar {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

/* ====== Enhanced Buttons ====== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--primary);
  color: var(--fg);
  font-weight: 600;
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
  border-color: var(--border-light);
}

.btn:active {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  color: var(--bg);
  border-color: transparent;
  box-shadow: 
    var(--shadow-lg),
    0 0 20px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
  box-shadow: 
    var(--shadow-2xl),
    0 0 30px rgba(14, 165, 233, 0.4);
  transform: translateY(-4px) scale(1.02);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--bg);
  border-color: transparent;
}

.link {
  color: var(--brand);
  text-decoration: none;
  font-weight: 600;
  position: relative;
  transition: color var(--transition-fast);
}

.link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--brand), var(--brand-light));
  transition: width var(--transition);
}

.link:hover::after {
  width: 100%;
}

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

/* ====== Page Hero ====== */
.page-hero {
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent);
  position: relative;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at center, rgba(14, 165, 233, 0.05), transparent);
  pointer-events: none;
}

.page-hero h1 {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  margin: 0;
  text-align: center;
  background: linear-gradient(135deg, var(--fg), var(--brand-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ====== Enhanced Forms ====== */
.form {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.form .field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
  min-width: 280px;
}

.form .field label {
  font-weight: 600;
  color: var(--fg-secondary);
  font-size: var(--font-size-sm);
}

.form .field.required label::after {
  content: ' *';
  color: var(--error);
}

.form textarea {
  min-height: 120px;
  resize: vertical;
  font-family: inherit;
}

.form .btn {
  align-self: flex-start;
  margin-top: var(--space-4);
}

/* ====== Enhanced Footer ====== */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.05));
  padding: var(--space-12) 0 var(--space-8);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 20%, rgba(14, 165, 233, 0.03), transparent),
    radial-gradient(circle at 80% 80%, rgba(245, 158, 11, 0.02), transparent);
  pointer-events: none;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-8);
  position: relative;
  z-index: 1;
}

.footer-grid h4 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--fg);
}

.footer-grid p {
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.footer-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-grid li {
  margin-bottom: var(--space-2);
}

.footer-grid a {
  color: var(--muted);
  transition: color var(--transition-fast);
}

.footer-grid a:hover {
  color: var(--brand-light);
}

.to-top {
  position: fixed;
  bottom: var(--space-6);
  left: var(--space-6);
  border-radius: 50%;
  width: 56px;
  height: 56px;
  border: 1px solid var(--border);
  background: rgba(30, 41, 59, 0.9);
  backdrop-filter: blur(20px);
  display: none;
  color: var(--fg);
  font-size: var(--font-size-xl);
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: var(--shadow-lg);
  z-index: 50;
}

.to-top.show {
  display: inline-grid;
  place-items: center;
  animation: fadeInUp 0.3s ease-out;
}

.to-top:hover {
  transform: translateY(-3px) scale(1.1);
  background: var(--brand);
  border-color: var(--brand-light);
  box-shadow: var(--shadow-xl), 0 0 20px rgba(14, 165, 233, 0.3);
}

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

/* ====== Enhanced Animations ====== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.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; }

/* ====== Enhanced Card Effects ====== */
.tilt {
  transform-style: preserve-3d;
  perspective: 1000px;
}

.tilt:hover {
  transform: perspective(1000px) rotateX(5deg) rotateY(5deg);
}

/* ====== Loading States ====== */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* ====== Scroll Progress Indicator ====== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand), var(--brand-light), var(--accent));
  z-index: 1000;
  transition: width 0.1s ease-out;
}

/* ====== Enhanced Responsive Design ====== */
@media (max-width: 1200px) {
  .container {
    padding: 0 var(--space-6);
  }
  
  .hero-content h1 {
    font-size: var(--font-size-4xl);
  }
  
  .cards-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    text-align: center;
  }
  
  .hero-content h1 {
    font-size: var(--font-size-3xl);
  }
  
  .hero-media {
    order: -1;
    min-height: 300px;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
    text-align: center;
  }
  
  .section {
    padding: var(--space-12) 0;
  }
  
  .section-header {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 var(--space-4);
  }
  
  .hero {
    padding: var(--space-12) 0 var(--space-8);
  }
  
  .hero-content h1 {
    font-size: var(--font-size-2xl);
  }
  
  .hero-content p {
    font-size: var(--font-size-base);
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .card {
    padding: var(--space-4);
  }
  
  .btn {
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-xs);
  }
  
  .to-top {
    width: 48px;
    height: 48px;
    bottom: var(--space-4);
    left: var(--space-4);
  }
}

/* ====== Print Styles ====== */
@media print {
  .site-header,
  .hero-media,
  .to-top,
  .nav-toggle {
    display: none !important;
  }
  
  .page-wrapper {
    background: white !important;
    color: black !important;
  }
  
  .card {
    border: 1px solid #ccc !important;
    background: white !important;
    break-inside: avoid;
  }
}

/* ====== Accessibility Enhancements ====== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .hero::before,
  .hero-media .glow {
    animation: none !important;
  }
}

/* Focus styles for keyboard navigation */
.btn:focus-visible,
.input:focus-visible,
.nav-toggle:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --border: rgba(255, 255, 255, 0.3);
    --border-light: rgba(255, 255, 255, 0.5);
  }
}

/* ====== Performance Optimizations ====== */
.card,
.btn,
.hero-media img {
  will-change: transform;
}

.hero::before,
.hero-media .glow {
  will-change: transform, opacity;
}

/* GPU acceleration for smooth animations */
.reveal,
.card:hover,
.btn:hover {
  transform: translateZ(0);
}