/* ===================================
   CDHD - Charte Graphique v2
   Design System Moderne
   =================================== */

/* Variables CSS - Mode Clair */
:root {
  --color-primary: #1da6d4;
  --color-primary-dark: #0d6e8a;
  --color-primary-light: #4fc3e8;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-bg-card: #ffffff;
  --color-text: #0f172a;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --color-footer-bg: #0f172a;
  --color-footer-text: #e2e8f0;
  --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);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Variables CSS - Mode Sombre */
html.dark {
  --color-bg: #020617;
  --color-bg-alt: #0f172a;
  --color-bg-card: #1e293b;
  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-border: #334155;
  --color-footer-bg: #020617;
  --color-footer-text: #e2e8f0;
}

/* Reset et Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

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

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

/* ===================================
   Boutons
   =================================== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #FFFFFF;
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: 0.75rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary:hover {
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background-color: transparent;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: 0.75rem;
  border: 2px solid var(--color-primary);
  cursor: pointer;
  transition: var(--transition);
}

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

.btn-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  background-color: #FFFFFF;
  color: var(--color-primary-dark);
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: 0.75rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-white:hover {
  transform: translateY(-2px);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  background-color: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  color: #FFFFFF;
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: 0.75rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: var(--transition);
}

.btn-ghost:hover {
  background-color: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
}

/* ===================================
   Navigation
   =================================== */
.nav-link {
  position: relative;
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.875rem;
  padding: 0.5rem 0.875rem;
  border-radius: 0.5rem;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--color-primary);
  background-color: rgba(29, 166, 212, 0.08);
}

.nav-link.active {
  color: var(--color-primary);
  background-color: rgba(29, 166, 212, 0.1);
}

/* Mobile Navigation */
.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  border-radius: 0.75rem;
  color: var(--color-text);
  font-weight: 500;
  transition: var(--transition);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background-color: rgba(29, 166, 212, 0.1);
  color: var(--color-primary);
}

.mobile-menu.active {
  max-height: 500px;
  opacity: 1;
}

/* Hamburger Animation */
#hamburgerBtn.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translateY(2px);
}

#hamburgerBtn.active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: translateX(-10px);
}

#hamburgerBtn.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translateY(-2px);
}

/* ===================================
   Cards
   =================================== */
.card {
  background-color: var(--color-bg-card);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.card-hover-glow:hover {
  box-shadow: 0 0 0 1px rgba(29, 166, 212, 0.2), 0 20px 25px -5px rgba(29, 166, 212, 0.1);
}

/* ===================================
   Hero Section
   =================================== */
.hero-fullscreen {
  min-height: calc(100vh - 4rem);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13, 110, 138, 0.95) 0%, rgba(29, 166, 212, 0.85) 100%);
  z-index: 1;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-content {
  position: relative;
  z-index: 2;
}

/* Page Header (non-fullscreen) */
.page-header {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  padding: 4rem 1rem;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 40%;
  height: 100%;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Ccircle cx='30' cy='30' r='4'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* ===================================
   Sections
   =================================== */
.section {
  padding: 5rem 1rem;
}

@media (min-width: 768px) {
  .section {
    padding: 6rem 1rem;
  }
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-title {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--color-text);
}

@media (min-width: 768px) {
  .section-title {
    font-size: 2.5rem;
  }
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 3rem;
  font-size: 1.125rem;
  line-height: 1.7;
}

/* ===================================
   Footer
   =================================== */
.footer {
  background-color: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 4rem 1rem 2rem;
}

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

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  margin-top: 3rem;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* ===================================
   Formulaire
   =================================== */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--color-text);
}

.form-input {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: 1rem;
  transition: var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(29, 166, 212, 0.15);
}

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

/* ===================================
   Avatar
   =================================== */
.avatar-initials {
  width: 80px;
  height: 80px;
  border-radius: 1rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  font-family: 'Poppins', sans-serif;
}

/* ===================================
   Badges
   =================================== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.875rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.025em;
}

.badge-primary {
  background-color: rgba(29, 166, 212, 0.1);
  color: var(--color-primary);
}

.badge-success {
  background-color: rgba(16, 185, 129, 0.1);
  color: #10b981;
}

.badge-warning {
  background-color: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
}

.badge-danger {
  background-color: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

/* ===================================
   Image Placeholder
   =================================== */
.img-placeholder {
  background: linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-border) 100%);
  border-radius: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  overflow: hidden;
}

/* ===================================
   Statistiques
   =================================== */
.stat-card {
  text-align: center;
  padding: 2rem 1.5rem;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-family: 'Poppins', sans-serif;
  line-height: 1;
  margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
  .stat-number {
    font-size: 3rem;
  }
}

.stat-label {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  font-weight: 500;
}

/* ===================================
   CTA Section
   =================================== */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: #FFFFFF;
  padding: 5rem 1rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 50%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  pointer-events: none;
}

/* ===================================
   Filtres
   =================================== */
.filter-btn {
  padding: 0.625rem 1.25rem;
  border-radius: 9999px;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.875rem;
  font-weight: 500;
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-btn.active {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #FFFFFF;
  border-color: transparent;
}

/* ===================================
   Pagination
   =================================== */
.pagination {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  align-items: center;
  margin-top: 3rem;
}

.page-btn {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.5rem;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
  color: var(--color-text);
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
}

.page-btn:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.page-btn.active {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #FFFFFF;
  border-color: transparent;
}

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

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

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

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

.float {
  animation: float 3s ease-in-out infinite;
}

/* Staggered animation delays */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }

/* ===================================
   Utilitaires
   =================================== */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-balance {
  text-wrap: balance;
}

/* Glass effect */
.glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Icon container */
.icon-box {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(29, 166, 212, 0.15) 0%, rgba(29, 166, 212, 0.05) 100%);
  color: var(--color-primary);
}

/* Link arrow animation */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: var(--transition);
}

.link-arrow:hover {
  gap: 0.75rem;
}

/* ===================================
   Responsive Utilities
   =================================== */
@media (max-width: 640px) {
  .hide-mobile { display: none !important; }
}

@media (min-width: 641px) and (max-width: 1023px) {
  .hide-tablet { display: none !important; }
}

@media (min-width: 1024px) {
  .hide-desktop { display: none !important; }
}

/* ===================================
   Image Styles
   =================================== */
.img-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.img-rounded {
  border-radius: 1rem;
}

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

/* Team member card */
.team-card {
  text-align: center;
  padding: 2rem 1.5rem;
}

.team-card .avatar-initials {
  margin: 0 auto 1rem;
}

/* Partner logo */
.partner-logo {
  padding: 2rem;
  background-color: var(--color-bg-card);
  border-radius: 1rem;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  transition: var(--transition);
}

.partner-logo:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}