/* ========================================
   TOMORROW.ONLINE - DESIGN SYSTEM
   Dark Theme avec Gradient Rose→Violet
   ======================================== */

/* === VARIABLES === */
:root {
  /* Couleurs principales */
  --void: #000000;
  --void-soft: #0A0A0A;
  --white: #FFFFFF;
  --white-soft: #EAEAEA;
  --white-ghost: rgba(255, 255, 255, 0.6);
  
  /* Gradient rose→violet (accent principal) */
  --gradient-main: linear-gradient(90deg, rgba(180, 7, 254, 1) 0%, rgba(255, 10, 55, 1) 100%);
  --gradient-violet: rgba(180, 7, 254, 1);
  --gradient-rose: rgba(255, 10, 55, 1);
  
  /* Grille */
  --grid: rgba(255, 255, 255, 0.05);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;
  
  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index layers */
  --z-background: -1;
  --z-base: 1;
  --z-dropdown: 10;
  --z-sticky: 50;
  --z-modal-overlay: 100;
  --z-modal: 200;
  --z-cursor: 9999;
}

/* === RESET & BASE === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  background-color: var(--void);
  color: var(--white);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
  cursor: none; /* Pour le cursor custom */
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 900;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 10vw, 8rem); }
h2 { font-size: clamp(2rem, 6vw, 5rem); }
h3 { font-size: clamp(1.5rem, 4vw, 3rem); }
h4 { font-size: clamp(1.25rem, 3vw, 2rem); }
h5 { font-size: clamp(1rem, 2vw, 1.5rem); }
h6 { font-size: clamp(0.875rem, 1.5vw, 1.25rem); }

p {
  font-size: clamp(1rem, 2vw, 1.125rem);
  line-height: 1.6;
}

.font-heading {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
}

.font-mono {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 400;
}

.text-gradient {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* === BUTTONS === */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 0.875rem;
  text-transform: uppercase;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
}

.btn-primary {
  background: var(--gradient-main);
  color: var(--white);
  box-shadow: 0 4px 0 0 var(--gradient-violet);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 0 0 var(--gradient-violet),
              0 12px 30px rgba(180, 7, 254, 0.4);
}

.btn-primary:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 0 var(--gradient-violet);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}

.btn-outline:hover {
  background: var(--white);
  color: var(--void);
}

.btn-ghost {
  background: transparent;
  color: var(--white-soft);
  border: 1px solid var(--grid);
}

.btn-ghost:hover {
  border-color: var(--gradient-violet);
  color: var(--white);
}

/* === CARDS === */
.card {
  background: var(--void-soft);
  border: 1px solid var(--grid);
  padding: 2rem;
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--gradient-violet);
  box-shadow: 0 0 30px rgba(180, 7, 254, 0.2);
  transform: translateY(-4px);
}

.card-gradient {
  background: var(--gradient-main);
  color: var(--white);
  border: none;
}

/* === GRID BACKGROUND === */
.bg-grid {
  background-image: 
    linear-gradient(to right, var(--grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* === CUSTOM CURSOR === */
.custom-cursor {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--white);
  mix-blend-mode: difference;
  position: absolute;
  pointer-events: none;
  z-index: var(--z-cursor);
  transition: transform 0.15s ease;
  transform: translate(-50%, -50%);
}

.custom-cursor.hover {
  transform: translate(-50%, -50%) scale(1.5);
}

/* === UTILITIES === */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: var(--spacing-xl) 0;
  position: relative;
}

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

.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }

.opacity-60 { opacity: 0.6; }
.opacity-40 { opacity: 0.4; }

/* === ANIMATIONS === */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.animate-fadeIn {
  animation: fadeIn 0.6s ease-out;
}

.animate-slideInLeft {
  animation: slideInLeft 0.6s ease-out;
}

.animate-slideInRight {
  animation: slideInRight 0.6s ease-out;
}

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

/* === RESPONSIVE === */
@media (max-width: 768px) {
  :root {
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
  }
  
  .container {
    padding: 0 1rem;
  }
  
  .section {
    padding: var(--spacing-lg) 0;
  }
}

/* === SMOOTH SCROLL === */
html.lenis {
  height: auto;
}

.lenis.lenis-smooth {
  scroll-behavior: auto;
}

.lenis.lenis-smooth [data-lenis-prevent] {
  overscroll-behavior: contain;
}

.lenis.lenis-stopped {
  overflow: hidden;
}

.lenis.lenis-scrolling iframe {
  pointer-events: none;
}

/* === WHATSAPP FLOAT BUTTON === */
.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  transition: all var(--transition-base);
  color: white;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 20px rgba(37, 211, 102, 0.6);
}

/* === LANGUAGE SWITCHER === */
.lang-switch {
  position: fixed;
  bottom: 2rem;
  left: 2rem;
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--void-soft);
  border: 1px solid var(--grid);
  padding: 0.5rem 1rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: all var(--transition-base);
}

.lang-switch:hover {
  border-color: var(--gradient-violet);
  box-shadow: 0 4px 12px rgba(180, 7, 254, 0.3);
}

.lang-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--white-ghost);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.lang-link.active {
  color: var(--white);
  background: var(--gradient-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.lang-sep {
  color: var(--grid);
  font-size: 0.75rem;
}

@media (max-width: 768px) {
  .whatsapp-float {
    bottom: 1rem;
    right: 1rem;
    width: 50px;
    height: 50px;
  }
  
  .whatsapp-float svg {
    width: 24px;
    height: 24px;
  }
  
  .lang-switch {
    bottom: 1rem;
    left: 1rem;
    padding: 0.4rem 0.8rem;
  }
}