/* ===== CSS VARIABLES ===== */
:root {
  /* User Requested Colors */
  --primary-color: #3B82F6;
  --primary-light: #60A5FA;
  --primary-dark: #2563EB;
  --secondary-color: #F8FAFC;
  --background-color: #1E293B;
  --background-light: #334155;
  --background-dark: #0F172A;
  --button-color: #EF4444;
  --button-hover: #DC2626;
  --text-primary: #F1F5F9;
  --text-secondary: #CBD5E1;
  --text-muted: #94A3B8;
  
  /* Additional Colors */
  --accent-blue: #06B6D4;
  --accent-purple: #8B5CF6;
  --success: #10B981;
  --warning: #F59E0B;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Playfair Display', 'Georgia', serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Spacing Scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 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);
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
}

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

html {
  font-size: 16px;
  line-height: 1.6;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background: linear-gradient(135deg, var(--background-dark) 0%, var(--background-color) 50%, var(--background-light) 100%);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

::-webkit-scrollbar-track {
  background: var(--background-dark);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(45deg, var(--primary-color), var(--accent-blue));
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-light);
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--secondary-color);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--primary-light);
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  color: var(--text-primary);
}

h5 {
  font-size: 1.25rem;
  color: var(--text-primary);
}

h6 {
  font-size: 1rem;
  color: var(--text-secondary);
}

p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-normal);
}

a:hover {
  color: var(--primary-light);
  text-decoration: underline;
}

/* ===== HEADER ===== */
.header {
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(59, 130, 246, 0.2);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: all var(--transition-normal);
}

.header.scrolled {
  background: rgba(15, 23, 42, 0.95);
  box-shadow: var(--shadow-lg);
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  transition: transform var(--transition-normal);
}

.logo:hover {
  transform: scale(1.05);
  text-decoration: none;
}

.nav {
  display: flex;
  list-style: none;
  gap: var(--space-2xl);
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  padding: var(--space-sm) 0;
  position: relative;
  transition: color var(--transition-normal);
  text-decoration: none;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-blue));
  transition: width var(--transition-normal);
}

.nav-link:hover {
  color: var(--primary-color);
  text-decoration: none;
}

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

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

.nav-link.active::after {
  width: 100%;
}

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: linear-gradient(135deg, 
    rgba(59, 130, 246, 0.1) 0%, 
    rgba(15, 23, 42, 0.8) 50%, 
    rgba(30, 41, 59, 0.9) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33% { transform: translateY(-20px) rotate(120deg); }
  66% { transform: translateY(10px) rotate(240deg); }
}

.hero-content {
  text-align: center;
  max-width: 800px;
  padding: var(--space-2xl);
  position: relative;
  z-index: 2;
}

.hero-title {
  margin-bottom: var(--space-xl);
  animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
  font-family: var(--font-primary);
  animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-description {
  font-size: 1.125rem;
  line-height: 1.8;
  margin-bottom: var(--space-3xl);
  animation: fadeInUp 1s ease-out 0.6s both;
}

.hero-actions {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease-out 0.8s both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-2xl);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  font-family: var(--font-primary);
}

.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-primary {
  background: linear-gradient(135deg, var(--button-color) 0%, var(--button-hover) 100%);
  color: white;
  box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  color: white;
  text-decoration: none;
}

.btn-secondary {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
  background: var(--primary-color);
  color: white;
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.btn-outline:hover {
  background: rgba(59, 130, 246, 0.1);
  color: var(--primary-color);
  border-color: var(--primary-color);
  text-decoration: none;
}

/* ===== SECTIONS ===== */
.section {
  padding: var(--space-4xl) 0;
  position: relative;
}

.section:nth-child(even) {
  background: linear-gradient(135deg, 
    rgba(15, 23, 42, 0.3) 0%, 
    rgba(30, 41, 59, 0.2) 100%);
}

.section:nth-child(odd) {
  background: transparent;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-subtitle {
  text-align: center;
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== CONTAINER ===== */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container-wide {
  max-width: 1600px;
}

/* ===== CARDS ===== */
.card {
  background: rgba(30, 41, 59, 0.5);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  border: 1px solid rgba(59, 130, 246, 0.1);
  backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-blue), var(--accent-purple));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-2xl);
  border-color: rgba(59, 130, 246, 0.3);
}

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

.card-title {
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}

.card-text {
  color: var(--text-secondary);
  line-height: 1.7;
}

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

.grid-1 { grid-template-columns: 1fr; }
.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)); }

@media (min-width: 768px) {
  .grid-md-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-md-3 { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1024px) {
  .grid-lg-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-lg-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-lg-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ===== FORMS ===== */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-md);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-lg);
  background: rgba(30, 41, 59, 0.3);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all var(--transition-normal);
  font-family: var(--font-primary);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
  background: rgba(30, 41, 59, 0.5);
}

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

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

.form-select {
  cursor: pointer;
}

/* ===== UTILITIES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-blue { color: var(--primary-color); }
.text-red { color: var(--button-color); }
.text-green { color: var(--success); }
.text-yellow { color: var(--warning); }

.bg-primary { background: var(--primary-color); }
.bg-secondary { background: var(--secondary-color); }
.bg-dark { background: var(--background-dark); }
.bg-light { background: var(--background-light); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }

.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }

.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

/* ===== FOOTER ===== */
.footer {
  background: linear-gradient(135deg, 
    rgba(10, 14, 26, 0.95) 0%, 
    rgba(15, 23, 42, 0.95) 100%);
  border-top: 1px solid rgba(59, 130, 246, 0.2);
  padding: var(--space-3xl) 0 var(--space-xl);
  margin-top: var(--space-4xl);
}

.footer-content {
  display: grid;
  gap: var(--space-2xl);
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  margin-bottom: var(--space-2xl);
}

.footer-section h4 {
  color: var(--secondary-color);
  margin-bottom: var(--space-lg);
}

.footer-section p,
.footer-section a {
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-section a:hover {
  color: var(--primary-color);
  text-decoration: none;
}

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

.footer-section ul li {
  margin-bottom: var(--space-sm);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(59, 130, 246, 0.1);
  color: var(--text-muted);
}

/* ===== ANIMATIONS ===== */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.animate-pulse { animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite; }
.animate-spin { animation: spin 1s linear infinite; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header-container {
    padding: var(--space-md) var(--space-lg);
    flex-direction: column;
    gap: var(--space-lg);
  }
  
  .nav {
    gap: var(--space-lg);
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 300px;
  }
  
  .section {
    padding: var(--space-2xl) 0;
  }
  
  .container {
    padding: 0 var(--space-lg);
  }
}

@media (max-width: 480px) {
  .header-container {
    padding: var(--space-sm) var(--space-md);
  }
  
  .nav {
    flex-direction: column;
    text-align: center;
    gap: var(--space-md);
  }
  
  .hero-content {
    padding: var(--space-lg);
  }
  
  .card {
    padding: var(--space-lg);
  }
}

/* ===== SPECIAL EFFECTS ===== */
.gradient-text {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-blue) 50%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glow {
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.glow:hover {
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
}

.glass {
  background: rgba(30, 41, 59, 0.2);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(59, 130, 246, 0.1);
}

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

.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;
}

/* Focus styles for accessibility */
*:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}


/* Cookie Banner Additional Styles for Tailwind */
.cookie-banner-hover-effect:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

@media (prefers-reduced-motion: reduce) {
    .cookie-banner-hover-effect:hover {
        transform: none;
    }
}