/* ==========================================================================
   VHYNX - LUXURY DIGITAL THEME (VANILLA CSS)
   ========================================================================== */

:root {
  /* Colorimétrie & Effets (Noirs absolus) */
  --black: #000000;
  --silver: #e5e5e5;
  --chrome: #b0b0b0;
  --blue-electric: #007aff;
  --glass: rgba(5, 5, 5, 0.4);
  --border: rgba(255, 255, 255, 0.1);
  --glass-blur: blur(20px);
  
  /* Typographie */
  --font-main: 'Lexend', sans-serif;
  
  /* Système d'Espacements (Fluides grâce à clamp) */
  --space-xs: clamp(10px, 2vw, 20px);
  --space-sm: clamp(20px, 4vw, 40px);
  --space-md: clamp(40px, 8vw, 80px);
  --space-lg: clamp(80px, 12vw, 120px);
  --space-xl: clamp(100px, 15vw, 150px);
  
  /* Anatomie de la Grille Principale */
  --grid-gap: clamp(20px, 2vw, 40px);
  --max-width: 1600px;
  --padding-x: var(--space-md);
  
  /* Animation */
  --transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   RESET & NORMALISATION (Prévention du Scroll Horizontal)
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden; /* Empêche strictement le scroll horizontal */
  max-width: 100vw;
}

body {
  background-color: var(--black);
  color: var(--silver);
  font-family: var(--font-main);
  letter-spacing: 0.1em;
  overflow-x: hidden;
  max-width: 100vw;
  line-height: inherit;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

/* ==========================================================================
   GRILLE & LAYOUT
   ========================================================================== */
.grid-container {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--grid-gap);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--padding-x);
  width: 100%;
}

.col-span-12 { grid-column: span 12; }
.col-span-8 { grid-column: span 8; }
.col-span-6 { grid-column: span 6; }
.col-span-4 { grid-column: span 4; }
.col-span-5 { grid-column: span 5; }

/* ==========================================================================
   TYPOGRAPHIE
   ========================================================================== */
.title-massive {
  font-size: clamp(2.5rem, 10vw, 8rem);
  line-height: 0.9;
  letter-spacing: -0.02em;
  font-weight: 300;
  text-transform: uppercase;
}

.small-caps {
  font-size: 0.75rem;
  font-weight: 300;
  text-transform: uppercase;
  line-height: 1.1;
  letter-spacing: 0.2em;
}

h2 { font-size: clamp(1.5rem, 4vw, 2rem); font-weight: 300; letter-spacing: 0.1em; }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); font-weight: 300; letter-spacing: 0.1em; }

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.main-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 70;
  transition: all 0.5s ease;
  padding: var(--space-sm) 0;
}

.main-nav.scrolled {
  padding: var(--space-xs) 0;
  background: var(--glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  position: relative;
  z-index: 80;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: var(--space-sm);
}

.nav-item {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 10px 15px;
  position: relative;
}

.nav-item::after {
  content: '';
  position: absolute;
  width: 0;
  height: 1px;
  bottom: 0;
  left: 50%;
  background-color: var(--silver);
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.nav-item:hover::after {
  width: 100%;
}

/* ==========================================================================
   HERO VIDEO BACKGROUND (Object-Fit 100% Viewport)
   ========================================================================== */
.hero-section {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.video-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  object-fit: cover; /* Garantit le remplissage parfait sans déformation */
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.8) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
}

/* ==========================================================================
   COMPOSANTS UI (Glassmorphism & Cards)
   ========================================================================== */
.glass {
  background: var(--glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
}

.image-card {
  position: relative;
  overflow: hidden;
  border: 1px solid #1A1A1A;
  background: var(--black);
  transition: var(--transition);
}

.image-card video, .image-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.dark-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.75);
  transition: var(--transition);
  z-index: 1;
}

.image-card:hover .dark-overlay {
  background: rgba(0,0,0,0.2);
}

.image-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

/* Ratio de présentation */
.ratio-21-9 { aspect-ratio: 21/9; }
.ratio-16-9 { aspect-ratio: 16/9; }

/* ==========================================================================
   MEDIA QUERIES (Mobile)
   ========================================================================== */
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 80;
  position: relative;
}

.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 5, 5, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 60;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.5s ease;
}

.mobile-overlay.active {
  opacity: 1;
  visibility: visible;
}

@media (max-width: 768px) {
  .grid-container {
    gap: 20px; /* Grille plus respirante sur mobile */
  }
  
  /* Stacking des colonnes en 1 fraction */
  .col-span-12, .col-span-8, .col-span-6, .col-span-4, .col-span-5 {
    grid-column: span 12;
  }
  
  .nav-links {
    display: none;
  }
  
  .mobile-toggle {
    display: block;
  }
}