/* ===========================================
   DESIGN SYSTEM - Piscinistes.fr
   Composants cohérents et palette réduite
   =========================================== */

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

/* ===========================================
   1. TOKENS DE DESIGN (Palette réduite)
   =========================================== */
:root {
  /* Couleurs primaires (3 tons seulement) */
  --color-primary: #0ba5e9;      /* Bleu piscine principal */
  --color-primary-light: #e0f2fe; /* Bleu très clair */
  --color-primary-dark: #006ba3;  /* Bleu foncé */

  /* Couleurs secondaires (2 tons) */
  --color-success: #22c55e;       /* Vert succès */
  --color-accent: #f59e0b;        /* Orange accent */

  /* Couleurs neutres (6 tons seulement) */
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-600: #4b5563;
  --color-gray-900: #111827;

  /* Blanc et noir */
  --color-white: #ffffff;
  --color-black: #000000;

  /* Espacement cohérent (4 tailles) */
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;

  /* Bordures cohérentes (3 rayons) */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;

  /* Ombres cohérentes (2 niveaux) */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);

  /* Typographie cohérente */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-heading: 'Plus Jakarta Sans', sans-serif;
}

/* ===========================================
   2. BASE & RESET
   =========================================== */
* {
  box-sizing: border-box;
}

html {
  /* scroll-behavior removed for reduced motion */
}

body {
  font-family: var(--font-family-primary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-gray-900);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===========================================
   3. TYPOGRAPHIE (Composants texte)
   =========================================== */

/* Titres */
.heading-1, .heading-xl {
  font-family: var(--font-family-heading);
  font-size: clamp(2.25rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--color-gray-900);
}

.heading-2, .heading-lg {
  font-family: var(--font-family-heading);
  font-size: clamp(1.875rem, 4vw, 2.25rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--color-gray-900);
}

.heading-3, .heading-md {
  font-family: var(--font-family-heading);
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-gray-900);
}

.heading-4, .heading-sm {
  font-family: var(--font-family-heading);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-gray-900);
}

/* Corps de texte */
.text-body {
  font-family: var(--font-family-primary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-gray-900);
}

.text-body-lg {
  font-family: var(--font-family-primary);
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-gray-900);
}

.text-body-sm {
  font-family: var(--font-family-primary);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-gray-600);
}

.text-muted {
  color: var(--color-gray-600);
}

.text-accent {
  color: var(--color-primary);
}

/* Compatibilité avec anciens éléments */
h1 { @extend .heading-1; }
h2 { @extend .heading-2; }
h3 { @extend .heading-3; }
h4 { @extend .heading-4; }
p { @extend .text-body; }

/* ===========================================
   4. BOUTONS (3 variantes seulement)
   =========================================== */

/* Bouton primaire */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background-color: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-family-primary);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  min-height: 48px; /* Accessibilité mobile */
}

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

.btn-primary:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Bouton secondaire */
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: calc(var(--space-md) - 2px) calc(var(--space-lg) - 2px); /* Compense la bordure */
  background-color: var(--color-white);
  color: var(--color-primary);
  font-family: var(--font-family-primary);
  font-size: 1rem;
  font-weight: 600;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  min-height: 48px; /* Accessibilité mobile */
}

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

.btn-secondary:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Bouton tertiaire (lien) */
.btn-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background-color: transparent;
  color: var(--color-primary);
  font-family: var(--font-family-primary);
  font-size: 1rem;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  min-height: 48px; /* Accessibilité mobile */
}

.btn-link:hover {
  background-color: var(--color-primary-light);
}

.btn-link:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Modern card styles */
.card-modern {
  background: white;
  border-radius: var(--border-radius-2xl);
  border: 1px solid rgba(0, 0, 0, 0.05);
  position: relative;
  overflow: hidden;
}

.card-modern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary-500), var(--color-accent-500));
  opacity: 0;
}

/* Hero section improvements */
.hero-gradient {
  background: linear-gradient(135deg,
    var(--color-primary-600) 0%,
    var(--color-primary-700) 25%,
    var(--color-primary-800) 50%,
    var(--color-primary-900) 75%,
    #1e293b 100%);
  position: relative;
  overflow: hidden;
}

.hero-gradient::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
}

/* Stats cards */
.stats-card {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius-xl);
  padding: 1.5rem;
  text-align: center;
}

/* Service icons */
.service-icon {
  width: 4rem;
  height: 4rem;
  background: linear-gradient(135deg, var(--color-primary-100), var(--color-primary-200));
  border-radius: var(--border-radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

/* ===========================================
   5. FORMULAIRES (Inputs cohérents)
   =========================================== */

/* Input de base */
.form-input {
  width: 100%;
  padding: var(--space-md);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  font-family: var(--font-family-primary);
  font-size: 1rem;
  color: var(--color-gray-900);
  min-height: 48px; /* Accessibilité mobile */
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(11, 165, 233, 0.1);
}

.form-input::placeholder {
  color: var(--color-gray-600);
}

/* Select */
.form-select {
  width: 100%;
  padding: var(--space-md);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  font-family: var(--font-family-primary);
  font-size: 1rem;
  color: var(--color-gray-900);
  min-height: 48px; /* Accessibilité mobile */
  cursor: pointer;
}

.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(11, 165, 233, 0.1);
}

/* Textarea */
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  font-family: var(--font-family-primary);
  font-size: 1rem;
  color: var(--color-gray-900);
  min-height: 120px;
  resize: vertical;
}

.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(11, 165, 233, 0.1);
}

/* États d'erreur */
.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: #ef4444;
}

.form-input.error:focus,
.form-select.error:focus,
.form-textarea.error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* États de succès */
.form-input.success,
.form-select.success,
.form-textarea.success {
  border-color: var(--color-success);
}

.form-input.success:focus,
.form-select.success:focus,
.form-textarea.success:focus {
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

/* Compatibilité avec anciens formulaires */
.modern-form input,
.modern-form select,
.modern-form textarea {
  @extend .form-input;
}

.modern-form select {
  @extend .form-select;
}

.modern-form textarea {
  @extend .form-textarea;
}

/* ===========================================
   6. CARTES (Cards cohérentes)
   =========================================== */

/* Carte de base */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-gray-200);
}

.card-body {
  padding: var(--space-lg);
}

.card-footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--color-gray-200);
  background-color: var(--color-gray-50);
}

/* Carte moderne (pour piscinistes) */
.card-modern {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-modern .card-body {
  padding: var(--space-lg);
}

/* Carte statistique */
.card-stats {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
}

/* Compatibilité avec anciennes cartes */
.card-modern {
  @extend .card-modern;
}

.stats-card {
  @extend .card-stats;
}

/* ===========================================
   7. BADGES & ÉTIQUETTES
   =========================================== */

/* Badge primaire */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-family: var(--font-family-primary);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-lg);
}

/* Badge de succès */
.badge-success {
  background-color: #dcfce7;
  color: #166534;
}

/* Badge d'accent */
.badge-accent {
  background-color: #fef3c7;
  color: #92400e;
}

/* Badge moderne (ancien) */
.badge-modern {
  @extend .badge;
}

/* ===========================================
   8. AUTRES COMPOSANTS
   =========================================== */

/* Icônes de service */
.service-icon {
  width: 4rem;
  height: 4rem;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--color-white);
}

/* Étoiles de notation */
.rating-stars {
  display: inline-flex;
  gap: 0.125rem;
}

.rating-stars .fa-star {
  color: var(--color-accent);
}

/* ===========================================
   9. SECTIONS SPÉCIALES
   =========================================== */

/* Section Hero */
.hero-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
}

/* Section avec fond gris */
.section-gray {
  background-color: var(--color-gray-50);
  padding: var(--space-xl) 0;
}

/* Section avec fond blanc */
.section-white {
  background-color: var(--color-white);
  padding: var(--space-xl) 0;
}

/* ===========================================
   10. UTILITAIRES & ACCESSIBILITÉ
   =========================================== */

/* Espacement */
.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); }

.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); }

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

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

/* Flex utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* Grid utilities */
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* Animations légères (optionnelles) */
@keyframes pulse-soft {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.loading-pulse {
  animation: pulse-soft 2s ease-in-out infinite;
}

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

/* Focus styles */
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.modern-form input:focus-visible,
.modern-form select:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* Mobile optimizations */
@media (max-width: 768px) {
  .hero-gradient {
    padding: 3rem 1rem;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    justify-content: center;
    min-height: 48px; /* Touch target size */
    font-size: 1rem;
  }

  .card-modern {
    margin: 0.5rem;
    padding: 1rem;
  }

  .stats-card {
    padding: 1rem;
  }

  .service-icon {
    width: 3rem;
    height: 3rem;
    font-size: 1.5rem;
  }

  /* Improve touch targets */
  .badge-modern {
    padding: 0.5rem 1rem;
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  /* Better mobile navigation */
  .mobile-menu-toggle {
    display: block;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 0.5rem;
    border: none;
    color: white;
    font-size: 1.25rem;
  }

  /* Stack grid items on mobile */
  .grid-responsive {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  @media (min-width: 640px) {
    .grid-responsive {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (min-width: 768px) {
    .grid-responsive {
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
  }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
  .card-modern:hover {
    transform: none;
  }

  .btn-primary:hover,
  .btn-secondary:hover {
    transform: none;
  }

  /* Ensure minimum touch targets */
  button,
  a,
  input,
  select,
  textarea {
    min-height: 44px;
    min-width: 44px;
  }

  /* Larger focus rings on touch devices */
  .btn-primary:focus-visible,
  .btn-secondary:focus-visible {
    outline: 3px solid var(--color-primary-500);
    outline-offset: 3px;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .card-modern {
    border: 2px solid;
  }

  .btn-primary,
  .btn-secondary {
    border: 2px solid;
  }

  .badge-modern {
    border: 2px solid;
  }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  .card-modern,
  .btn-primary,
  .btn-secondary,
  .service-icon {
    transition: none;
  }

  .hero-gradient::before {
    animation: none;
  }

  .loading-pulse {
    animation: none;
  }
}

/* Print styles */
@media print {
  .btn-primary::before,
  .hero-gradient::before {
    display: none;
  }
}