/* ========================================
   ELAIC - CSS MODERNE 2025
   Architecture CSS avancée avec nouvelles fonctionnalités
   ======================================== */

/* ========================================
   1. VARIABLES CSS DESIGN SYSTEM 2025
   ======================================== */
:root {
  /* Palette de couleurs étendue */
  --primary-blue: #2C4766;
  --primary-blue-50: color-mix(in srgb, var(--primary-blue) 5%, transparent);
  --primary-blue-100: color-mix(in srgb, var(--primary-blue) 10%, transparent);
  --primary-blue-200: color-mix(in srgb, var(--primary-blue) 20%, transparent);
  --primary-blue-300: color-mix(in srgb, var(--primary-blue) 30%, transparent);
  --primary-blue-400: color-mix(in srgb, var(--primary-blue) 60%, transparent);
  --primary-blue-500: var(--primary-blue);
  --primary-blue-600: color-mix(in srgb, var(--primary-blue) 80%, black);
  --primary-blue-700: color-mix(in srgb, var(--primary-blue) 60%, black);
  --primary-blue-800: color-mix(in srgb, var(--primary-blue) 40%, black);
  --primary-blue-900: color-mix(in srgb, var(--primary-blue) 20%, black);

  --accent-orange: #CE751E;
  --accent-orange-50: color-mix(in srgb, var(--accent-orange) 5%, transparent);
  --accent-orange-100: color-mix(in srgb, var(--accent-orange) 10%, transparent);
  --accent-orange-200: color-mix(in srgb, var(--accent-orange) 20%, transparent);
  --accent-orange-300: color-mix(in srgb, var(--accent-orange) 30%, transparent);
  --accent-orange-400: color-mix(in srgb, var(--accent-orange) 60%, transparent);
  --accent-orange-500: var(--accent-orange);
  --accent-orange-600: color-mix(in srgb, var(--accent-orange) 80%, black);
  --accent-orange-700: color-mix(in srgb, var(--accent-orange) 60%, black);

  /* Couleurs semantiques */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;

  /* Système de couleurs adaptatif */
  --surface-primary: light-dark(#ffffff, #1a1a1a);
  --surface-secondary: light-dark(#f8f9fa, #2d2d2d);
  --surface-tertiary: light-dark(#f1f3f4, #3d3d3d);
  --surface-inverse: light-dark(#1a1a1a, #ffffff);
  
  --text-primary: light-dark(#1a1a1a, #ffffff);
  --text-secondary: light-dark(#6b7280, #9ca3af);
  --text-tertiary: light-dark(#9ca3af, #6b7280);
  --text-inverse: light-dark(#ffffff, #1a1a1a);
  
  --border-primary: light-dark(#e5e7eb, #374151);
  --border-secondary: light-dark(#d1d5db, #4b5563);

  /* Typographie avancée */
  --font-family-display: 'Poppins', system-ui, -apple-system, sans-serif;
  --font-family-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-family-mono: 'Fira Code', 'SF Mono', Consolas, monospace;

  /* Scale typographique fluide */
  --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, 2rem);
  --font-size-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 3rem);
  --font-size-4xl: clamp(2.25rem, 1.8rem + 2.25vw, 4rem);

  /* Espacement fluide */
  --space-3xs: clamp(0.25rem, 0.23rem + 0.11vw, 0.31rem);
  --space-2xs: clamp(0.5rem, 0.45rem + 0.23vw, 0.63rem);
  --space-xs: clamp(0.75rem, 0.68rem + 0.34vw, 0.94rem);
  --space-sm: clamp(1rem, 0.91rem + 0.45vw, 1.25rem);
  --space-md: clamp(1.5rem, 1.36rem + 0.68vw, 1.88rem);
  --space-lg: clamp(2rem, 1.82rem + 0.91vw, 2.5rem);
  --space-xl: clamp(3rem, 2.73rem + 1.36vw, 3.75rem);
  --space-2xl: clamp(4rem, 3.64rem + 1.82vw, 5rem);
  --space-3xl: clamp(6rem, 5.45rem + 2.73vw, 7.5rem);

  /* Rayons de bordure */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Ombres modernes */
  --shadow-xs: 0 1px 2px 0 color-mix(in srgb, black 5%, transparent);
  --shadow-sm: 0 1px 3px 0 color-mix(in srgb, black 10%, transparent), 0 1px 2px -1px color-mix(in srgb, black 6%, transparent);
  --shadow-md: 0 4px 6px -1px color-mix(in srgb, black 10%, transparent), 0 2px 4px -2px color-mix(in srgb, black 6%, transparent);
  --shadow-lg: 0 10px 15px -3px color-mix(in srgb, black 10%, transparent), 0 4px 6px -4px color-mix(in srgb, black 5%, transparent);
  --shadow-xl: 0 20px 25px -5px color-mix(in srgb, black 10%, transparent), 0 8px 10px -6px color-mix(in srgb, black 4%, transparent);
  --shadow-2xl: 0 25px 50px -12px color-mix(in srgb, black 25%, transparent);

  /* Transitions modernes */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 600ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* Z-index scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-tooltip: 1070;
  --z-max: 2147483647;
}

/* ========================================
   2. RESET ET BASE MODERNE
   ======================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  height: 100%;
}

@supports (scroll-behavior: smooth) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  min-height: 100dvh; /* Nouvelle unité viewport dynamique */
  font-family: var(--font-family-body);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--surface-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: 'kern' 1, 'liga' 1, 'calt' 1;
  overflow-x: hidden;
  transition: color var(--transition-base), background-color var(--transition-base);
}

/* ========================================
   3. CONTAINER QUERIES 2025
   ======================================== */
.container {
  container-type: inline-size;
  max-width: 80rem;
  margin-inline: auto;
  padding-inline: var(--space-md);
}

@container (width > 48rem) {
  .container {
    padding-inline: var(--space-lg);
  }
}

@container (width > 64rem) {
  .container {
    padding-inline: var(--space-xl);
  }
}

/* ========================================
   4. TYPOGRAPHIE MODERNE
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  text-wrap: balance; /* Nouvelle propriété pour un meilleur rendu */
}

h1 {
  font-size: var(--font-size-4xl);
  font-weight: 800;
}

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 {
  text-wrap: pretty; /* Améliore le rendu des paragraphes */
  color: var(--text-secondary);
}

/* ========================================
   5. COMPOSANTS MODULAIRES
   ======================================== */

/* Boutons modernes */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xs);
  padding-block: var(--space-sm);
  padding-inline: var(--space-lg);
  border: 2px solid transparent;
  border-radius: var(--radius-full);
  font-family: var(--font-family-body);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  min-width: 12rem;
  
  /* Effet de brillance */
  &::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
      90deg,
      transparent,
      color-mix(in srgb, white 30%, transparent),
      transparent
    );
    transition: left var(--transition-slow);
  }
  
  &:hover::before {
    left: 100%;
  }
}

.btn-primary {
  background-color: var(--accent-orange-500);
  color: var(--text-inverse);
  border-color: var(--accent-orange-500);
  
  &:hover {
    background-color: var(--accent-orange-600);
    border-color: var(--accent-orange-600);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
  }
  
  &:active {
    transform: translateY(0);
  }
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--border-primary);
  
  &:hover {
    background-color: var(--surface-secondary);
    border-color: var(--accent-orange-500);
    color: var(--accent-orange-500);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }
}

/* Cards modernes avec backdrop-filter */
.card {
  background: color-mix(in srgb, var(--surface-primary) 80%, transparent);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  container-type: inline-size;
  
  &:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-orange-200);
  }
}

/* ========================================
   6. LAYOUT MODERNE AVEC CSS GRID
   ======================================== */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-auto {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Subgrid pour les alignements parfaits */
@supports (grid-template-rows: subgrid) {
  .subgrid {
    display: grid;
    grid-template-rows: subgrid;
    grid-row: span 3;
  }
}

/* ========================================
   7. ANIMATIONS MODERNES 2025
   ======================================== */

/* Animations avec @property pour de meilleures performances */
@property --rotate {
  syntax: '<angle>';
  inherits: false;
  initial-value: 0deg;
}

@property --scale {
  syntax: '<number>';
  inherits: false;
  initial-value: 1;
}

/* Keyframes optimisées */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translate3d(0, 2rem, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translate3d(2rem, 0, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-8px) rotate(1deg);
  }
}

@keyframes pulse {
  0%, 100% {
    --scale: 1;
    opacity: 1;
  }
  50% {
    --scale: 1.05;
    opacity: 0.8;
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px color-mix(in srgb, var(--accent-orange-500) 30%, transparent);
  }
  50% {
    box-shadow: 0 0 30px color-mix(in srgb, var(--accent-orange-500) 60%, transparent);
  }
}

/* Classes d'animation réutilisables */
.animate-fade-in {
  animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.animate-slide-in-right {
  animation: slideInRight 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.animate-float {
  animation: float 6s ease-in-out infinite;
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-glow {
  animation: glow 2s ease-in-out infinite;
}

/* ========================================
   8. UTILITAIRES MODERNES
   ======================================== */

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

/* Focus visible moderne */
.focus-visible:focus-visible {
  outline: 2px solid var(--accent-orange-500);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Scroll snap pour une navigation fluide */
.scroll-snap-y {
  scroll-snap-type: y mandatory;
}

.scroll-snap-center {
  scroll-snap-align: center;
}

/* ========================================
   9. RESPONSIVE MODERNE
   ======================================== */

/* Breakpoints basés sur le contenu */
@media (width < 48rem) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .container {
    padding-inline: var(--space-sm);
  }
  
  .btn {
    width: 100%;
    min-width: unset;
  }
}

@media (width >= 48rem) and (width < 64rem) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (width >= 64rem) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ========================================
   10. PRINT STYLES
   ======================================== */
@media print {
  * {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }
  
  a:visited {
    text-decoration: underline;
  }
  
  a[href]:after {
    content: " (" attr(href) ")";
  }
  
  .btn,
  .animate-fade-in,
  .animate-slide-in-right,
  .animate-float {
    animation: none !important;
    transform: none !important;
  }
}

/* ========================================
   11. PRÉFÉRENCES UTILISATEUR
   ======================================== */

/* Respect des préférences de mouvement réduit */
@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;
  }
}

/* Respect du contraste élevé */
@media (prefers-contrast: high) {
  :root {
    --border-primary: #000000;
    --text-primary: #000000;
    --text-secondary: #000000;
  }
}

/* ========================================
   12. DARK MODE AUTOMATIQUE
   ======================================== */
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
  }
}

/* Support des couleurs étendues P3 */
@media (color-gamut: p3) {
  :root {
    --primary-blue: color(display-p3 0.173 0.278 0.4);
    --accent-orange: color(display-p3 0.808 0.459 0.118);
  }
}