/* ================================
   Variables CSS - Palette moderne SaaS
   ================================ */
:root {
  /* Couleurs principales - Bleu marine étoilé */
  --color-primary: #0f3a7d;
  --color-primary-dark: #0a2a5c;
  --color-primary-light: #1e4a9d;

  /* Couleurs neutres */
  --color-background: #f8f9fa;
  --color-surface: #ffffff;
  --color-border: #e5e7eb;

  /* Texte */
  --color-text-primary: #111827;
  --color-text-secondary: #6b7280;
  --color-text-light: #9ca3af;

  /* États */
  --color-success: #10b981;
  --color-error: #ef4444;
  --color-warning: #f59e0b;

  /* Ombres */
  --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);

  /* Bordures */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Espacements */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

/* ================================
   Reset & Base
   ================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #0d0d0d; /* Fond sombre style Railway */
  color: #d1d5db; /* Texte gris clair amical */
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ================================
   Hero Section
   ================================ */
.hero {
  background: transparent; /* Fond sombre du body */
  padding: var(--spacing-xl) 0;
  color: white;
  text-align: center;
}

.hero h1,
.hero-title {
  color: #1a4d8f; /* Bleu sombre proche de webb.jpg */
  text-shadow: 0 4px 12px rgba(15, 58, 125, 0.8); /* Ombre bleue */
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 500;
  color: #1a4d8f; /* Même bleu que Multiversaire */
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.05em;
}

.hero-gifs {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  flex-wrap: wrap;
}

.hero-gif {
  width: clamp(150px, 20vw, 250px);
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  transition: transform var(--transition-base);
}

.hero-gif:hover {
  transform: scale(1.05);
}

.hero-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.info-card {
  background: rgba(26, 26, 26, 0.8); /* Fond sombre semi-transparent */
  backdrop-filter: blur(10px);
  border: 1px solid rgba(15, 58, 125, 0.5); /* Bordure bleue subtile */
  color: #d1d5db; /* Texte gris clair */
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

.info-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(15, 58, 125, 0.6);
  border-color: var(--color-primary);
}

.info-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.info-content {
  text-align: left;
}

.info-content h3 {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #d1d5db; /* Texte gris clair amical */
  margin-bottom: 0.25rem;
}

.info-content p {
  font-size: 1.125rem;
  font-weight: 500;
}

.info-card-gif {
  justify-content: center;
  padding: 0;
  overflow: hidden;
}

.info-gif {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ================================
   Main Section - Carousel avec background webb.jpg
   ================================ */
.main-section {
  background: url('/images/webb.jpg') center center / cover no-repeat;
  padding: var(--spacing-xl) 0;
  min-height: 60vh;
  border-radius: var(--radius-lg);
  margin: var(--spacing-xl) auto;
  max-width: 100%; /* Pleine largeur pour immersion */
  position: relative;
}

/* Overlay sombre sur webb.jpg pour contraste avec carousel */
.main-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4); /* Assombrir l'image */
  border-radius: var(--radius-lg);
  z-index: 0;
  pointer-events: none;
}

.main-section .container {
  position: relative;
  z-index: 1; /* Au-dessus de l'overlay */
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  color: white;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
}

/* ================================
   Carousel Auto-Défilant Infini
   ================================ */
.carousel-wrapper {
  overflow: hidden;
  position: relative;
  width: 100%;
  padding: var(--spacing-md) 0;
}

.carousel {
  display: flex;
  gap: var(--spacing-md);
  animation: scrollInfinite 30s linear infinite;
  will-change: transform;
}

.carousel:hover {
  animation-play-state: paused; /* Pause au survol */
}

@keyframes scrollInfinite {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%); /* Défile de la moitié (cartes dupliquées) */
  }
}

/* Carte invité dans le carousel */
.guest-card {
  min-width: 200px;
  width: 200px;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.98);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  position: relative;
}

.guest-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.guest-card-photo {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: var(--color-border);
}

.guest-card-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.guest-card-info {
  padding: var(--spacing-sm);
  text-align: center;
}

.guest-card-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

/* ================================
   Bouton Ajouter
   ================================ */
.add-button-container {
  display: flex;
  justify-content: center;
  margin-top: var(--spacing-xl);
}

.btn-add {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 1.125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

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

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

.btn-icon {
  font-size: 1.5rem;
  line-height: 1;
}

/* ================================
   Section Texte
   ================================ */
.text-section {
  background: transparent;
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.intro-text {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  line-height: 1.8;
  color: #d1d5db;
  max-width: 800px;
  margin: 0 auto;
  font-weight: 400;
}

/* ================================
   Section Images
   ================================ */
.images-section {
  background: transparent;
  padding: var(--spacing-xl) 0;
}

.images-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-lg);
}

.image-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  background: rgba(26, 26, 26, 0.8);
  backdrop-filter: blur(10px);
  min-height: 400px;
}

.image-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px rgba(15, 58, 125, 0.4);
}

.image-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Responsive */
@media (max-width: 768px) {
  .images-row {
    grid-template-columns: 1fr;
  }

  .image-item {
    min-height: 300px;
  }
}

/* ================================
   Modal Base
   ================================ */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.modal.active {
  display: flex;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  animation: fadeIn var(--transition-base);
}

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

.modal-content {
  position: relative;
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp var(--transition-base);
  z-index: 1001;
}

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

.modal-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  width: 36px;
  height: 36px;
  border: none;
  background: var(--color-border);
  border-radius: 50%;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text-secondary);
  z-index: 10;
}

.modal-close:hover {
  background: var(--color-text-secondary);
  color: white;
  transform: rotate(90deg);
}

/* ================================
   Modal Détails Invité
   ================================ */
.guest-details {
  padding: var(--spacing-xl);
}

.guest-photo-large {
  width: 100%;
  height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow-lg);
}

.guest-photo-large img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.guest-info {
  text-align: center;
}

.guest-name {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.guest-message {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ================================
   Modal Formulaire
   ================================ */
.modal-form {
  max-width: 500px;
}

.modal-title {
  font-size: 1.75rem;
  font-weight: 700;
  text-align: center;
  padding: var(--spacing-lg);
  padding-bottom: 0;
  color: var(--color-text-primary);
}

.guest-form {
  padding: var(--spacing-lg);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: inherit;
  transition: all var(--transition-fast);
  background: var(--color-surface);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

/* Photo Upload Section */
.photo-upload-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.photo-preview {
  width: 100%;
  height: 250px;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-background);
}

.photo-preview.has-photo {
  border-style: solid;
  border-color: var(--color-primary);
}

.photo-preview img,
.photo-preview video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.photo-placeholder {
  text-align: center;
  color: var(--color-text-light);
}

.placeholder-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: var(--spacing-xs);
}

.photo-buttons {
  display: flex;
  gap: var(--spacing-sm);
}

.btn-secondary {
  flex: 1;
  padding: var(--spacing-sm);
  border: 2px solid var(--color-primary);
  background: transparent;
  color: var(--color-primary);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

/* Form Actions */
.form-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.btn-cancel,
.btn-submit {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-cancel {
  background: var(--color-border);
  color: var(--color-text-secondary);
}

.btn-cancel:hover {
  background: var(--color-text-light);
  color: white;
}

.btn-submit {
  background: var(--color-primary);
  color: white;
}

.btn-submit:hover {
  background: var(--color-primary-dark);
}

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

/* Form Message */
.form-message {
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  text-align: center;
  font-weight: 500;
}

.form-message.success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.form-message.error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

/* ================================
   Animation transition fluide modal
   ================================ */
.modal-content.transitioning {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero-info {
    grid-template-columns: 1fr;
  }

  .guest-card {
    width: 160px;
  }

  .guest-card-photo {
    height: 160px;
  }

  .guest-photo-large {
    height: 300px;
  }

  .modal-content {
    margin: var(--spacing-sm);
  }

  .photo-buttons {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }

  .hero {
    padding: var(--spacing-lg) 0;
  }

  .guest-card {
    width: 140px;
  }

  .guest-card-photo {
    height: 140px;
  }
}

/* ================================
   Modale d'Accueil
   ================================ */
.welcome-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  animation: fadeIn 0.5s ease-in-out;
}

.welcome-modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.welcome-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.85);
  cursor: pointer;
}

.welcome-content {
  position: relative;
  z-index: 10000;
  text-align: center;
  pointer-events: none;
}

.welcome-gif {
  max-width: 80vw;
  max-height: 70vh;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(15, 58, 125, 0.5); /* Ombre bleue */
}

.welcome-text {
  margin-top: var(--spacing-lg);
  color: white;
  font-size: 1.5rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
  animation: pulse 2s infinite;
}

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

@keyframes pulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

/* ================================
   Copyright Footer
   ================================ */
.copyright-footer {
  background: transparent;
  padding: var(--spacing-lg) var(--spacing-md);
  text-align: center;
  color: #6b7280;
  font-size: 0.875rem;
  margin-top: var(--spacing-xl);
}

.copyright-footer p {
  margin: 0;
}

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

/* Focus visible pour accessibilité clavier */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}