/* ==========================================================================
   Cayo Studio — Système de design
   Palette: Noir profond + Or champagne · Ambiance cinématographique
   ========================================================================== */

/* --- Variables CSS (Design Tokens) --- */
:root {
  /* Couleurs */
  --color-bg: #0A0A0A;
  --color-surface: #141414;
  --color-surface-elevated: #1F1F1F;
  --color-text: #F5F5F5;
  --color-text-muted: #A0A0A0;
  --color-text-subtle: #6B6B6B;
  --color-accent: #C9A961;
  --color-accent-hover: #DCBE7A;
  --color-accent-soft: rgba(201, 169, 97, 0.12);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.16);
  --color-overlay: rgba(10, 10, 10, 0.72);

  /* Typographie */
  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Tailles de police (échelle modulaire) */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.75rem;
  --text-5xl: 3.75rem;
  --text-6xl: 5rem;
  --text-7xl: 6.5rem;

  /* Espacement */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;
  --space-4xl: 12rem;

  /* Mise en page */
  --container-max: 1280px;
  --container-narrow: 840px;
  --header-height: 80px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 150ms var(--ease);
  --transition: 300ms var(--ease);
  --transition-slow: 600ms var(--ease-out);

  /* Ombres */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 48px rgba(201, 169, 97, 0.18);
}

/* --- Réinitialisation moderne --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
}

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

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

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

ul,
ol {
  list-style: none;
}

::selection {
  background-color: var(--color-accent);
  color: var(--color-bg);
}

/* --- Typographie --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

h1 { font-size: clamp(2.5rem, 6vw, var(--text-7xl)); }
h2 { font-size: clamp(2rem, 4.5vw, var(--text-5xl)); }
h3 { font-size: clamp(1.5rem, 3vw, var(--text-4xl)); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  color: var(--color-text-muted);
  max-width: 65ch;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

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

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

/* --- Mise en page (layout) --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-lg);
  }
}

.container-narrow {
  max-width: var(--container-narrow);
}

section {
  padding: var(--space-2xl) 0;
  position: relative;
}

@media (min-width: 768px) {
  section {
    padding: var(--space-3xl) 0;
  }
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-2xl);
}

.section-header p {
  margin: var(--space-md) auto 0;
}

/* --- Utilitaires --- */
.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;
}

.divider {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  margin: var(--space-md) auto;
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.fade-in {
  animation: fadeIn var(--transition-slow) both;
}

.fade-in-up {
  animation: fadeInUp var(--transition-slow) both;
}

/* Délais d'animation en cascade */
.delay-1 { animation-delay: 100ms; }
.delay-2 { animation-delay: 200ms; }
.delay-3 { animation-delay: 300ms; }
.delay-4 { animation-delay: 400ms; }
.delay-5 { animation-delay: 500ms; }

/* --- Accessibilité: respecte les préférences de mouvement --- */
@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 visible (accessibilité clavier) --- */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}