/* ===== CSS VARIABLES & THEME ===== */
:root {
  /* Triadic Color Scheme */
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --secondary-color: #dc2626;
  --secondary-dark: #b91c1c;
  --secondary-light: #ef4444;
  --tertiary-color: #059669;
  --tertiary-dark: #047857;
  --tertiary-light: #10b981;
  
  /* Accent Colors */
  --accent-purple: #7c3aed;
  --accent-purple-dark: #6d28d9;
  --accent-pink: #ec4899;
  --accent-orange: #f97316;
  
  /* Neutral Colors */
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --black: #000000;
  
  /* Typography */
  --font-heading: 'Archivo Black', sans-serif;
  --font-body: 'Roboto', sans-serif;
  
  /* Spacing */
  --section-padding: 5rem 0;
  --container-padding: 0 1rem;
  --border-radius: 0.75rem;
  --border-radius-lg: 1rem;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Animations */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  --cubic-bezier: cubic-bezier(0.4, 0, 0.2, 1);
  --cubic-bezier-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--gray-800);
  overflow-x: hidden;
  background-color: var(--white);
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 1rem;
  /* color: var(--gray-900); */
}

.section-title {
  background: linear-gradient(135deg, var(--primary-color), var(--accent-purple));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% 200%;
  animation: gradient-shift 3s ease-in-out infinite;
}

.section-subtitle {
  font-weight: 300;
  opacity: 0.9;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 900;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 1s var(--cubic-bezier);
}

.hero-subtitle {
  animation: fadeInUp 1s var(--cubic-bezier) 0.2s both;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-normal) var(--cubic-bezier);
  position: relative;
  overflow: hidden;
  min-width: 160px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.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) var(--cubic-bezier);
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--accent-purple));
  color: var(--white);
  box-shadow: var(--shadow-md);
  transform: translateY(0);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--accent-purple-dark));
  box-shadow: var(--shadow-xl);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  background: var(--white);
  color: var(--primary-color);
  transform: translateY(-2px);
}

button, input[type='submit'] {
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition-normal) var(--cubic-bezier);
}

/* ===== LINKS ===== */
.nav-link, .footer-link {
  color: var(--gray-700);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: color var(--transition-normal);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-purple));
  transition: width var(--transition-normal) var(--cubic-bezier);
}

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

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

.news-link, .resource-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  transition: all var(--transition-normal);
  position: relative;
}

.news-link:hover, .resource-link:hover {
  color: var(--primary-dark);
  transform: translateX(4px);
}

/* ===== HEADER & NAVIGATION ===== */
.header {
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-md);
}

.logo h1 {
  background: linear-gradient(135deg, var(--primary-color), var(--accent-purple));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0;
}

.mobile-menu-btn {
  /* display: flex; */
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  display: none;
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: flex;
  }
}

.hamburger-line {
  width: 25px;
  height: 3px;
  background: var(--gray-800);
  border-radius: 2px;
  transition: all var(--transition-normal) var(--cubic-bezier);
}

.mobile-menu-btn.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  padding: 1rem;
  margin-top: 1rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-nav-link {
  color: var(--gray-700);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 0;
  transition: color var(--transition-normal);
}

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

/* ===== HERO SECTION ===== */
.hero-section {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--white);
}

.hero-bg {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  filter: brightness(0.7);
}

.hero-content {
  z-index: 10;
  position: relative;
}

.hero-buttons {
  animation: fadeInUp 1s var(--cubic-bezier) 0.4s both;
}

.hero-stats {
  animation: fadeInUp 1s var(--cubic-bezier) 0.6s both;
}

.stat-item {
  opacity: 0;
  animation: fadeInUp 1s var(--cubic-bezier) forwards;
}

.stat-item:nth-child(1) { animation-delay: 0.8s; }
.stat-item:nth-child(2) { animation-delay: 1s; }
.stat-item:nth-child(3) { animation-delay: 1.2s; }

.stat-number {
  background: linear-gradient(135deg, var(--tertiary-color), var(--accent-orange));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===== CARDS ===== */
.card {
  background: var(--white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal) var(--cubic-bezier);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-purple), var(--tertiary-color));
  transform: scaleX(0);
  transition: transform var(--transition-normal) var(--cubic-bezier);
}

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

.card:hover::before {
  transform: scaleX(1);
}

.card-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform var(--transition-slow) var(--cubic-bezier);
}

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

.card-content {
  text-align: center;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

/* ===== EVENTS SECTION ===== */
.events-section {
  background: linear-gradient(135deg, #eff6ff 0%, #f3e8ff 100%);
}

.events-grid, .services-grid, .news-grid {
  display: grid;
  gap: 2rem;
}

.event-card, .service-card, .news-card {
  opacity: 0;
  animation: slideInUp 0.8s var(--cubic-bezier) forwards;
}

.event-card:nth-child(1) { animation-delay: 0.1s; }
.event-card:nth-child(2) { animation-delay: 0.2s; }
.event-card:nth-child(3) { animation-delay: 0.3s; }

.event-date {
  background: linear-gradient(135deg, var(--primary-color), var(--accent-purple));
  color: var(--white);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  display: inline-block;
}

/* ===== SLIDER ===== */
.slider-container {
  overflow: hidden;
  border-radius: var(--border-radius-lg);
}

.slider-track {
  display: flex;
  animation: slide-infinite 20s linear infinite;
}

.slider-item {
  min-width: 300px;
  margin-right: 1rem;
  position: relative;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.slider-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.slider-title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  color: var(--white);
  padding: 2rem 1rem 1rem;
  font-size: 1.125rem;
  font-weight: 700;
  text-align: center;
}

/* ===== METHODOLOGY SECTION ===== */
.step-card {
  opacity: 0;
  animation: fadeInUp 0.8s var(--cubic-bezier) forwards;
}

.step-card:nth-child(1) { animation-delay: 0.1s; }
.step-card:nth-child(2) { animation-delay: 0.2s; }
.step-card:nth-child(3) { animation-delay: 0.3s; }
.step-card:nth-child(4) { animation-delay: 0.4s; }

.step-number {
  animation: pulse 2s infinite;
}

/* ===== INNOVATION SECTION ===== */
.innovation-progress {
  width: 100%;
  height: 8px;
  background: var(--gray-200);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 1rem;
}

.progress-bar {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-purple));
  transition: width 2s var(--cubic-bezier);
  position: relative;
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: shimmer 2s infinite;
}

/* ===== INSIGHTS SECTION ===== */
.stat-widget {
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal) var(--cubic-bezier);
}

.stat-widget::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-purple));
}

.stat-widget:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stat-trend {
  font-weight: 600;
}

/* ===== RESOURCE CARDS ===== */
.resource-card {
  border: 2px solid transparent;
  transition: all var(--transition-normal) var(--cubic-bezier);
}

.resource-card:hover {
  border-color: var(--primary-color);
  transform: translateY(-4px);
}

/* ===== FORMS ===== */
.form {
  background: var(--white);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}

.form-label {
  display: block;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 0.5rem;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--border-radius);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: all var(--transition-normal);
  background: var(--white);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

/* ===== FOOTER ===== */
.footer {
  background: linear-gradient(135deg, var(--gray-900), var(--gray-800));
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

.footer-link {
  color: var(--gray-300);
  transition: color var(--transition-normal);
}

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

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-link {
  color: var(--gray-400);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem;
  border-radius: var(--border-radius);
  transition: all var(--transition-normal);
  position: relative;
}

.social-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-purple));
  opacity: 0;
  border-radius: var(--border-radius);
  transition: opacity var(--transition-normal);
  z-index: -1;
}

.social-link:hover {
  color: var(--white);
  transform: translateY(-2px);
}

.social-link:hover::before {
  opacity: 1;
}

/* ===== UTILITIES ===== */
.text-gradient {
  background: linear-gradient(135deg, var(--primary-color), var(--accent-purple));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.bg-gradient-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--accent-purple));
}

.bg-gradient-secondary {
  background: linear-gradient(135deg, var(--secondary-color), var(--accent-orange));
}

.bg-gradient-tertiary {
  background: linear-gradient(135deg, var(--tertiary-color), var(--primary-color));
}

.glassmorphism {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ===== SPECIAL PAGES ===== */
.success-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-purple));
}

.success-content {
  text-align: center;
  color: var(--white);
  padding: 2rem;
}

.legal-page {
  /* padding-top: 100px; */
  min-height: 100vh;
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

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

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

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

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

@keyframes slide-infinite {
  0% { transform: translateX(0); }
  100% { transform: translateX(-100%); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

/* ===== SCROLL ANIMATIONS ===== */
.scroll-reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s var(--cubic-bezier);
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
  }
  
  .hero-stats {
    gap: 1rem;
  }
  
  .stat-number {
    font-size: 2rem;
  }
  
  .card-image {
    height: 200px;
  }
}

@media (max-width: 480px) {
  .hero-content {
    padding: 0 1rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 280px;
  }
}

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

/* ===== PRINT STYLES ===== */
@media print {
  .header, .footer, .btn {
    display: none;
  }
  
  body {
    color: var(--black);
    background: var(--white);
  }
  
  .card {
    box-shadow: none;
    border: 1px solid var(--gray-300);
  }
}

/* ===== HIGH DPI DISPLAYS ===== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .hero-bg {
    background-image: url('image/expo-jeux-france-hero-gaming-exhibition-2x.jpg');
  }
}

/* ===== FOCUS STYLES ===== */
.btn:focus-visible, 
.nav-link:focus-visible,
.form-input:focus-visible,
.form-select:focus-visible,
.form-textarea:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* ===== LOADING STATES ===== */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: shimmer 1.5s infinite;
}

/* ===== DARK MODE SUPPORT ===== */
@media (prefers-color-scheme: dark) {
  .card, .form {
    background: var(--gray-800);
    color: var(--gray-100);
  }
  
  .form-input, .form-select, .form-textarea {
    background: var(--gray-700);
    border-color: var(--gray-600);
    color: var(--gray-100);
  }
}