/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

/* Modern CSS Variables */
:root {
  --primary: #00AEEF;
  --primary-dark: #0086bb;
  --secondary: #6366f1;
  --accent: #f59e0b;
  --success: #10b981;
  --dark: #1f2937;
  --light: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #00AEEF 0%, #0086bb 100%);
  --gradient-card: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  
  /* Transitions */
  --transition-fast: all 0.15s ease;
  --transition-normal: all 0.3s ease;
  --transition-slow: all 0.5s ease;
}

/* Base Styles */
* {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--light);
  color: var(--gray-800);
  line-height: 1.6;
  font-weight: 400;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  line-height: 1.2;
  color: var(--gray-900);
}

.display-1, .display-2, .display-3, .display-4 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
}

/* Navigation */
.navbar {
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(20px);
  border: none;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  padding: 1rem 0;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98) !important;
  box-shadow: var(--shadow-md);
  padding: 0.5rem 0;
}

.navbar-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--primary) !important;
  letter-spacing: -0.025em;
  transition: var(--transition-fast);
}

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

.navbar-nav .nav-link {
  font-weight: 500;
  color: var(--gray-700) !important;
  margin: 0 0.5rem;
  padding: 0.5rem 1rem !important;
  border-radius: 0.5rem;
  transition: var(--transition-fast);
  position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--primary) !important;
  background: rgba(0, 174, 239, 0.1);
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition-fast);
  transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
  width: 80%;
}

/* Buttons */
.btn {
  font-weight: 500;
  border-radius: 0.75rem;
  padding: 0.75rem 1.5rem;
  transition: var(--transition-fast);
  border: none;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: white;
}

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

.btn-outline-primary:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline-light {
  background: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--gray-100);
  color: var(--gray-700);
}

.btn-secondary:hover {
  background: var(--gray-200);
  transform: translateY(-1px);
}

/* Form Controls */
.form-control, .form-select {
  border: 2px solid var(--gray-200);
  border-radius: 0.75rem;
  padding: 0.875rem 1rem;
  transition: var(--transition-fast);
  background: var(--light);
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 0.2rem rgba(0, 174, 239, 0.25);
  background: white;
}

.form-label {
  color: var(--gray-700);
  margin-bottom: 0.5rem;
}

/* Cards */
.card {
  border: none;
  border-radius: 1rem;
  background: var(--gradient-card);
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.card-img-top {
  transition: var(--transition-normal);
}

.card:hover .card-img-top {
  transform: scale(1.05);
}

/* Hero Section - Updated 2025-08-13 */
.hero-section {
  background: var(--gradient-primary) !important;
  color: white;
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: none;
  opacity: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.5rem;
  font-weight: 300;
  opacity: 0.9;
  margin-bottom: 2rem;
}

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-fade-in-left {
  animation: fadeInLeft 0.6s ease forwards;
}

.animate-fade-in-right {
  animation: fadeInRight 0.6s ease forwards;
}

/* Page Header */
.page-header {
  background: var(--gradient-primary);
  color: white;
  padding: 8rem 0 4rem;
  margin-top: -80px;
  padding-top: 8rem;
}

/* Links */
a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
  text-decoration: none;
}

/* Footer */
footer {
  background: var(--gray-900);
  color: var(--gray-300);
  border: none;
  margin-top: 4rem;
}

footer a {
  color: var(--gray-300);
  transition: var(--transition-fast);
}

footer a:hover {
  color: var(--primary);
}

/* Utility Classes */
.text-gradient-primary {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-gradient-primary {
  background: var(--gradient-primary);
}

.shadow-custom {
  box-shadow: var(--shadow-xl);
}

/* Custom Icons */
.icon-circle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  color: white;
  font-size: 1.5rem;
}

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

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 4px;
}

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

/* Selection */
::selection {
  background: rgba(0, 174, 239, 0.3);
}

/* Loading Animation */
.loading {
  animation: pulse 2s infinite;
}

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

/* Responsive Design */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.2rem;
  }
  
  .navbar-nav .nav-link {
    margin: 0;
    padding: 0.75rem 1rem !important;
  }
  
  .hero-section {
    padding: 4rem 0;
    min-height: 80vh;
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.9rem;
  }
}