/* ==========================================
   L'ÃŽle aux Oiseaux - CSS Principal 
   
   Table des matières:
   1. Variables CSS
   2. Reset & Base Styles
   3. Typography
   4. Layout & Container
   5. Header & Navigation
   6. Hero Section
   7. Sections & Components
   8. Gallery Systems
   9. UI Components
   10. Utilities
   11. Responsive Design
   ========================================== */

/* ==========================================
   1. VARIABLES CSS
   ========================================== */

:root {
  /* Palette de couleurs - L'ÃŽle aux Oiseaux */
  --primary-blue: #4a6fbf;
  --bright-red: #e53e3e;
  --bright-yellow: #ffd700;
  --accent-green: #4caf50;

  /* Couleurs étendues */
  --color-primary-50: #eff6ff;
  --color-primary-100: #dbeafe;
  --color-primary-200: #bfdbfe;
  --color-primary-300: #93c5fd;
  --color-primary-400: #60a5fa;
  --color-primary-500: #3b82f6;
  --color-primary-600: var(--primary-blue);
  --color-primary-700: #1d4ed8;
  --color-primary-800: #1e40af;
  --color-primary-900: #1e3a8a;

  --color-accent-50: #fef2f2;
  --color-accent-100: #fee2e2;
  --color-accent-200: #fecaca;
  --color-accent-300: #fca5a5;
  --color-accent-400: #f87171;
  --color-accent-500: #ef4444;
  --color-accent-600: var(--bright-red);
  --color-accent-700: #b91c1c;
  --color-accent-800: #991b1b;
  --color-accent-900: #7f1d1d;

  --color-success-50: #ecfdf5;
  --color-success-100: #d1fae5;
  --color-success-200: #a7f3d0;
  --color-success-300: #6ee7b7;
  --color-success-400: #34d399;
  --color-success-500: #10b981;
  --color-success-600: var(--accent-green);
  --color-success-700: #047857;
  --color-success-800: #065f46;
  --color-success-900: #064e3b;

  --color-warning-50: #fffbeb;
  --color-warning-100: #fef3c7;
  --color-warning-200: #fde68a;
  --color-warning-300: #fcd34d;
  --color-warning-400: var(--bright-yellow);
  --color-warning-500: #f59e0b;
  --color-warning-600: #d97706;
  --color-warning-700: #b45309;
  --color-warning-800: #92400e;
  --color-warning-900: #78350f;

  /* Couleurs neutres */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --color-black: #000000;

  /* Couleurs sémantiques */
  --color-text-primary: var(--color-gray-900);
  --color-text-secondary: var(--color-gray-700);
  --color-text-muted: var(--color-gray-500);
  --color-text-inverse: var(--color-white);
  --color-background: var(--color-white);
  --color-background-alt: var(--color-gray-50);
  --color-border: var(--color-gray-200);
  --color-border-focus: var(--color-primary-500);

  /* Typographie */
  --font-family-primary: system-ui, -apple-system, 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, sans-serif;
  --font-family-heading: 'Georgia', 'Times New Roman', serif;

  /* Tailles de police fluides */
  --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --font-size-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --font-size-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --font-size-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
  --font-size-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --font-size-2xl: clamp(1.5rem, 1.3rem + 1vw, 1.875rem);
  --font-size-3xl: clamp(1.875rem, 1.6rem + 1.375vw, 2.25rem);
  --font-size-4xl: clamp(2.25rem, 1.9rem + 1.75vw, 3rem);
  --font-size-5xl: clamp(3rem, 2.5rem + 2.5vw, 4rem);

  /* Poids des polices */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Hauteurs de ligne */
  --line-height-none: 1;
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;

  /* Espacement */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --container-max-width: 1200px;
  --container-padding: var(--space-4);

  /* Border radius */
  --radius-sm: 0.125rem;
  --radius-base: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  --radius-full: 9999px;

  /* Ombres */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Transitions */
  --transition-fast: 150ms ease-out;
  --transition-normal: 300ms ease-out;
  --transition-slow: 500ms ease-out;

  /* Z-index */
  --z-index-dropdown: 1000;
  --z-index-sticky: 1100;
  --z-index-modal: 1400;
  --z-index-skiplink: 1600;
}

/* ==========================================
   2. RESET & BASE STYLES
   ========================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html,
body {
  height: 100%;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
}

/* ==========================================
   3. TYPOGRAPHY
   ========================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: var(--font-size-4xl);
}
h2 {
  font-size: var(--font-size-3xl);
}
h3 {
  font-size: var(--font-size-2xl);
}
h4 {
  font-size: var(--font-size-xl);
}
h5 {
  font-size: var(--font-size-lg);
}
h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--space-4);
  line-height: var(--line-height-relaxed);
}

a {
  color: var(--color-primary-600);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-700);
}

a:focus {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

ul,
ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}

li {
  margin-bottom: var(--space-1);
}

/* ==========================================
   4. LAYOUT & CONTAINER
   ========================================== */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.main {
  flex: 1;
}

/* Skip link pour accessibilité */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-primary-600);
  color: var(--color-white);
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  border-radius: var(--radius-md);
  z-index: var(--z-index-skiplink);
  font-weight: var(--font-weight-medium);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 6px;
}

/* Screen reader only */
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* ==========================================
   5. HEADER & NAVIGATION
   ========================================== */

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-index-sticky);
  background: var(--color-white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  border-bottom: 3px solid var(--primary-blue);
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  min-height: 80px;
  position: relative;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-family-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary-600);
  text-decoration: none;
}

.header__logo:hover {
  color: var(--color-primary-700);
}

.header__logo-icon {
  font-size: var(--font-size-2xl);
}

.header__mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
}

.nav {
  display: flex;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__link {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-lg);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast);
}

.nav__link:hover {
  background-color: var(--color-primary-50);
  color: var(--color-primary-700);
}

.nav__link--active {
  background-color: var(--color-primary-100);
  color: var(--color-primary-700);
}

/* ==========================================
   6. HERO SECTION
   ========================================== */

.hero {
  background: linear-gradient(
    135deg,
    var(--color-primary-50) 0%,
    var(--color-accent-50) 100%
  );
  padding: var(--space-16) 0;
  position: relative;
  overflow: hidden;
  min-height: 500px;
  display: flex;
  align-items: center;
}

.hero__content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
  width: 100%;
}

.hero__text {
  text-align: center;
  order: 2;
}

.hero__visual {
  position: relative;
  max-width: 100%;
  margin: 0 auto;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  order: 1;
}

.hero__visual img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 16/10;
  min-height: 250px;
}

.hero__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--primary-blue);
  margin-bottom: var(--space-4);
  line-height: var(--line-height-tight);
}

.hero__subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  line-height: var(--line-height-relaxed);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.hero__actions {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-direction: column;
  align-items: center;
  margin-top: var(--space-6);
}

/* ==========================================
   7. SECTIONS & COMPONENTS
   ========================================== */

/* Section Base */
.section {
  padding: var(--space-20) 0;
}

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

.section__header {
  text-align: center;
  margin-bottom: var(--space-16);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section__title {
  font-size: var(--font-size-3xl);
  color: var(--primary-blue);
  margin-bottom: var(--space-4);
}

.section__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* Section Statistiques */
.section#chiffres {
  background: linear-gradient(135deg, var(--primary-blue) 0%, #3b5aa0 100%);
  color: var(--color-white);
}

.section#chiffres .section__title {
  color: var(--color-white);
}

.section#chiffres .section__description {
  color: rgba(255, 255, 255, 0.9);
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-8);
}

.stats__item {
  text-align: center;
  padding: var(--space-6);
  background: transparent;
  transition: transform var(--transition-normal);
}

.stats__item:hover {
  transform: translateY(-4px);
}

.stats__value {
  display: block;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: var(--font-weight-extrabold);
  color: var(--bright-yellow);
  line-height: var(--line-height-none);
  margin-bottom: var(--space-3);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.stats__label {
  font-size: var(--font-size-base);
  color: rgba(255, 255, 255, 0.95);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-normal);
}

/* Section Programmes */
.programs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.program-card {
  background: var(--color-white);
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  transition: all 0.3s ease;
}

.program-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.program-card__header {
  background: linear-gradient(135deg, var(--accent-green), var(--primary-blue));
  color: var(--color-white);
  padding: 30px;
  text-align: center;
}

.program-card__age {
  background: rgba(255, 255, 255, 0.2);
  padding: 5px 12px;
  border-radius: 15px;
  font-size: 0.85rem;
  display: inline-block;
  margin-bottom: 10px;
  color: var(--color-white);
  font-weight: var(--font-weight-medium);
}

.program-card__title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--color-white);
}

.program-card__summary {
  font-size: 0.95rem;
  opacity: 0.9;
  color: var(--color-white);
  line-height: var(--line-height-relaxed);
}

.program-card__body {
  padding: 30px;
  background: var(--color-white);
}

.program-card__description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 20px;
}

.program-card__features {
  list-style: none;
  margin: 0;
  padding: 0;
}
.program-card__feature {
  position: relative;
  padding-left: 26px;
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}
.program-card__feature::before {
  content: '\2713'; /* ✓ en Unicode */
  position: absolute;
  left: 0;
  top: 0.3em;
  color: var(--accent-green);
  font-weight: 700;
  font-size: 1rem;
}
/* Services */
.services {
  display: grid;
  gap: var(--space-8);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.service-card {
  text-align: center;
  padding: var(--space-8);
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.service-card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary-700);
  margin-bottom: var(--space-4);
}

.service-card__description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* Contact */
.contact-info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
  margin-bottom: var(--space-12);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-4);
  padding: var(--space-8);
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.contact-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.contact-card__icon {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  background: var(--color-white);
  color: var(--primary-blue);
  border: 2px solid var(--primary-blue);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
  transition: all var(--transition-fast);
}

.contact-card:hover .contact-card__icon {
  background: var(--primary-blue);
  color: var(--color-white);
  transform: scale(1.05);
}

.contact-card__content {
  width: 100%;
}

.contact-card__title {
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-xl);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.contact-card__details {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
}

.contact-card__details a {
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
}

.contact-card__details a:hover {
  text-decoration: underline;
}

/* Testimonial */
.testimonial {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-12);
  background-color: var(--color-white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
}

.testimonial__quote {
  font-size: var(--font-size-lg);
  font-style: italic;
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
}

.testimonial__quote::before {
  content: '"';
  font-size: 1.5em;
  color: var(--color-primary-400);
}

.testimonial__quote::after {
  content: '"';
  font-size: 1.5em;
  color: var(--color-primary-400);
}

.testimonial__name {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.testimonial__title {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Footer */
.footer {
  background: var(--color-gray-800);
  color: var(--color-white);
  padding: var(--space-20) 0 var(--space-8);
}

.footer__content {
  display: grid;
  gap: var(--space-8);
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  margin-bottom: var(--space-12);
}

.footer__section {
  color: rgba(255, 255, 255, 0.9);
}

.footer__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.footer__links {
  list-style: none;
  padding: 0;
}

.footer__link {
  display: block;
  padding: var(--space-1) 0;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__bottom {
  text-align: center;
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

.footer__bottom p {
  margin-bottom: var(--space-4);
}

.footer__bottom p:last-child {
  margin-bottom: 0;
}

.footer__bottom .footer__link {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__bottom .footer__link:hover {
  color: var(--color-white);
  text-decoration: underline;
}

/* ==========================================
   8. GALLERY SYSTEMS
   ========================================== */

/* Gallery classique */
.gallery {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.gallery__item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal);
  height: 250px;
}

.gallery__item:hover {
  transform: scale(1.02);
}

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

.gallery__image--uniform {
  width: 100%;
  height: 250px;
  object-fit: cover;
  display: block;
}

.gallery__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  color: var(--color-white);
  padding: var(--space-6) var(--space-4) var(--space-4);
  transform: translateY(100%);
  transition: transform var(--transition-normal);
}

.gallery__item:hover .gallery__overlay {
  transform: translateY(0);
}

.gallery__title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-1);
}

.gallery__description {
  font-size: var(--font-size-sm);
  opacity: 0.9;
}

/* Gallery Mondrian Style */
.gallery--mondrian {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-template-rows: repeat(4, 200px);
  gap: 4px;
  max-width: 1200px;
  margin: 0 auto;
  background: #1a1a1a;
  padding: 4px;
  border-radius: var(--radius-lg);
}

.gallery--mondrian .gallery__item--large {
  grid-column: span 3;
  grid-row: span 2;
  border: 3px solid #ff0000;
}

.gallery--mondrian .gallery__item--wide {
  grid-column: span 4;
  grid-row: span 1;
  border: 3px solid #0066cc;
}

.gallery--mondrian .gallery__item--tall {
  grid-column: span 1;
  grid-row: span 3;
  border: 3px solid #ffdd00;
}

.gallery--mondrian .gallery__item--medium {
  grid-column: span 2;
  grid-row: span 1;
  border: 3px solid #000000;
}

.gallery--mondrian .gallery__item--small {
  grid-column: span 1;
  grid-row: span 1;
  border: 3px solid #ffffff;
}

.gallery--mondrian .gallery__item {
  position: relative;
  overflow: hidden;
  border-radius: 0;
  background: var(--color-white);
  transition: transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.gallery--mondrian .gallery__item:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  z-index: 10;
}

.gallery--mondrian .gallery__item--large:hover {
  border-color: #ff3333;
  box-shadow: 0 0 20px rgba(255, 0, 0, 0.3);
}

.gallery--mondrian .gallery__item--wide:hover {
  border-color: #3388ff;
  box-shadow: 0 0 20px rgba(0, 102, 204, 0.3);
}

.gallery--mondrian .gallery__item--tall:hover {
  border-color: #ffff33;
  box-shadow: 0 0 20px rgba(255, 221, 0, 0.3);
}

.gallery--mondrian .gallery__item--medium:hover {
  border-color: #333333;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

.gallery--mondrian .gallery__item--small:hover {
  border-color: #f0f0f0;
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

/* ==========================================
   9. UI COMPONENTS
   ========================================== */

/* Boutons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family-primary);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  line-height: var(--line-height-none);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.btn--primary {
  background-color: var(--color-primary-600);
  color: var(--color-white);
  border-color: var(--color-primary-600);
}

.btn--primary:hover {
  background-color: var(--color-primary-700);
  border-color: var(--color-primary-700);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-primary-600);
  border-color: var(--color-primary-600);
}

.btn--secondary:hover {
  background-color: var(--color-primary-600);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--accent {
  background-color: var(--bright-red);
  color: var(--color-white);
  border-color: var(--bright-red);
}

.btn--accent:hover {
  background-color: #b91c1c;
  border-color: #b91c1c;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.breadcrumb__link {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

.breadcrumb__current {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}

/* ==========================================
   10. UTILITIES
   ========================================== */

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

.hidden {
  display: none;
}

.block {
  display: block;
}

/* ==========================================
   11. RESPONSIVE DESIGN
   ========================================== */

/* Mobile First - Tablet */
@media (min-width: 640px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }

  .hero {
    padding: var(--space-20) 0;
    min-height: 600px;
  }

  .hero__title {
    font-size: var(--font-size-4xl);
  }

  .hero__subtitle {
    font-size: var(--font-size-lg);
    max-width: 600px;
  }

  .hero__actions {
    flex-direction: row;
    gap: var(--space-4);
  }

  .hero__actions .btn {
    width: auto;
    max-width: none;
  }
}

/* Mobile Navigation */
@media (max-width: 767px) {
  .header__mobile-toggle {
    display: block;
  }

  .header__nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }

  .header__nav--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav {
    flex-direction: column;
    padding: var(--space-4);
  }

  .nav__link {
    width: 100%;
    justify-content: center;
    padding: var(--space-3);
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }

  .stats__value {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .stats__label {
    font-size: var(--font-size-sm);
  }

  .programs,
  .services {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .contact-info {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .section {
    padding: var(--space-16) 0;
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .hero__actions .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  /* Gallery Mondrian Responsive */
  .gallery--mondrian {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(6, 150px);
    gap: 2px;
  }

  .gallery--mondrian .gallery__item--large {
    grid-column: span 2;
    grid-row: span 2;
  }

  .gallery--mondrian .gallery__item--wide {
    grid-column: span 3;
    grid-row: span 1;
  }

  .gallery--mondrian .gallery__item--tall {
    grid-column: span 1;
    grid-row: span 2;
  }

  .gallery--mondrian .gallery__item--medium {
    grid-column: span 2;
    grid-row: span 1;
  }
}

/* Extra small mobile */
@media (max-width: 479px) {
  .stats {
    grid-template-columns: 1fr;
  }

  .gallery--mondrian {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(8, 120px);
  }

  .gallery--mondrian .gallery__item--large,
  .gallery--mondrian .gallery__item--wide,
  .gallery--mondrian .gallery__item--medium {
    grid-column: span 2;
    grid-row: span 1;
  }

  .gallery--mondrian .gallery__item--tall,
  .gallery--mondrian .gallery__item--small {
    grid-column: span 1;
    grid-row: span 1;
  }
}

/* Desktop */
@media (min-width: 1024px) {
  .hero__content {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }

  .hero__text {
    text-align: left;
    order: 1;
  }

  .hero__visual {
    order: 2;
    max-width: 600px;
  }

  .hero__actions {
    justify-content: flex-start;
    margin-top: var(--space-8);
  }

  .hero__title {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--space-6);
  }

  .hero__subtitle {
    font-size: var(--font-size-xl);
    margin-left: 0;
    margin-right: 0;
    margin-bottom: var(--space-8);
  }

  .hero__visual img {
    aspect-ratio: 4/3;
    min-height: 400px;
  }
}

/* Print styles */
@media print {
  .header,
  .footer,
  .btn,
  .skip-link {
    display: none;
  }

  .main {
    margin: 0;
    padding: 0;
  }

  .section {
    padding: var(--space-4) 0;
    page-break-inside: avoid;
  }
}