/* ============================================================
   GLOBAL.CSS — Shared Design System for Portfolio
   Enzo HUGUET — 2026
   ============================================================ */

/* ─── Google Font ─── */
@import url('https://fonts.googleapis.com/css2?family=Epilogue:wght@300;400;500;600;700;800;900&display=swap');

/* ─── CSS Custom Properties ─── */
:root {
  /* Colors */
  --bg-dark: #050508;
  --bg-surface: #0a0a0f;
  --text: #fff;
  --text-muted: rgba(255,255,255,0.65);
  --text-secondary: rgba(255,255,255,0.82);

  /* Brand gradient */
  --gradient-start: #4648FF;
  --gradient-mid: #FF7262;
  --gradient-end: #FFAEA5;
  --gradient-primary: linear-gradient(135deg, #4648FF, #FF7262, #FFAEA5);
  --gradient-primary-subtle: linear-gradient(135deg, rgba(70,72,255,0.15), rgba(255,114,98,0.12), rgba(255,174,165,0.08));

  /* Glass system */
  --glass-bg: rgba(255,255,255,0.04);
  --glass-bg-hover: rgba(255,255,255,0.07);
  --glass-border: rgba(255,255,255,0.08);
  --glass-border-hover: rgba(255,255,255,0.15);
  --glass-shadow: 0 8px 32px rgba(0,0,0,0.4);
  --glass-shadow-hover: 0 16px 48px rgba(0,0,0,0.5);
  --glass-blur: 20px;

  /* Layout */
  --page-x: clamp(20px, 4vw, 64px);
  --max-width: 1200px;
  --max-width-wide: 1400px;

  /* Typography */
  --font: 'Epilogue', system-ui, -apple-system, sans-serif;

  /* Legacy variable aliases (for projet.css compatibility) */
  --glass: var(--glass-bg);
  --border: var(--glass-border);
  --shadow: var(--glass-shadow);

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 999px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 0.2s;
  --duration-normal: 0.35s;
  --duration-slow: 0.6s;

  /* Z-index scale */
  --z-bg: 0;
  --z-content: 1;
  --z-header: 100;
  --z-overlay: 500;
  --z-modal: 1000;
}

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

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

body {
  min-height: 100vh;
  background: var(--bg-dark);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  font-family: inherit;
  border: none;
  cursor: pointer;
}

/* ─── Selection ─── */
::selection {
  background: rgba(70,72,255,0.35);
  color: #fff;
}

/* ─── Focus ─── */
:focus-visible {
  outline: 2px solid rgba(70,72,255,0.6);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.12);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255,255,255,0.2);
}

/* ============================================================
   AMBIENT BACKGROUND (shared across pages)
   ============================================================ */
.page-ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: var(--z-bg);
  background:
    radial-gradient(ellipse 80% 60% at 15% 10%, rgba(70,72,255,0.12), transparent),
    radial-gradient(ellipse 70% 50% at 85% 15%, rgba(255,114,98,0.09), transparent),
    radial-gradient(ellipse 60% 50% at 50% 90%, rgba(255,174,165,0.07), transparent);
}

.page-ambient::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 0%, var(--bg-dark) 100%);
}

/* Noise texture overlay for depth */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  mix-blend-mode: overlay;
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0;
}

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

/* ============================================================
   GLASS CARD (shared component)
   ============================================================ */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--glass-shadow);
  transition:
    transform var(--duration-normal) var(--ease-out),
    border-color var(--duration-normal) var(--ease-out),
    background var(--duration-normal) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out);
}

.glass-card:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  box-shadow: var(--glass-shadow-hover);
}

.glass-card--interactive:hover {
  transform: translateY(-4px);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: #fff;
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition:
    transform var(--duration-fast) var(--ease-out),
    background var(--duration-fast) ease,
    border-color var(--duration-fast) ease,
    box-shadow var(--duration-fast) ease;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-2px);
  border-color: var(--glass-border-hover);
  background: var(--glass-bg-hover);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  border-color: transparent;
  background:
    linear-gradient(var(--glass-bg), rgba(255,255,255,0.02)) padding-box,
    var(--gradient-primary) border-box;
  background-origin: border-box;
  background-clip: padding-box, border-box;
  box-shadow: 0 0 20px rgba(70,72,255,0.15), 0 0 40px rgba(255,114,98,0.08);
}

.btn--primary:hover {
  box-shadow: 0 0 24px rgba(70,72,255,0.25), 0 0 48px rgba(255,114,98,0.12);
  border-color: transparent;
  background:
    linear-gradient(rgba(255,255,255,0.08), rgba(255,255,255,0.03)) padding-box,
    var(--gradient-primary) border-box;
  background-origin: border-box;
  background-clip: padding-box, border-box;
}

.btn--ghost {
  background: transparent;
  border-color: rgba(255,255,255,0.12);
}

.btn--ghost:hover {
  background: rgba(255,255,255,0.05);
}

/* ============================================================
   CHIPS / TAGS
   ============================================================ */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: rgba(255,255,255,0.9);
  white-space: nowrap;
}

/* ============================================================
   GRADIENT TEXT
   ============================================================ */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================================
   SCROLL REVEAL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* Scale variant */
.reveal-scale {
  opacity: 0;
  transform: scale(0.95);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* Slide from left */
.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

/* Slide from right */
.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

/* ============================================================
   MAGNETIC HOVER (for interactive cards)
   ============================================================ */
.magnetic-hover {
  transition: transform var(--duration-fast) var(--ease-out);
}

/* ============================================================
   ANIMATED GRADIENT BORDER
   ============================================================ */
@keyframes gradientRotate {
  0% { --angle: 0deg; }
  100% { --angle: 360deg; }
}

@property --angle {
  syntax: "<angle>";
  initial-value: 0deg;
  inherits: false;
}

/* ============================================================
   GLOW EFFECTS
   ============================================================ */
.glow-blue { box-shadow: 0 0 20px rgba(70,72,255,0.15); }
.glow-orange { box-shadow: 0 0 20px rgba(255,114,98,0.15); }

/* ============================================================
   SECTION SPACING
   ============================================================ */
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 65ch;
  margin-top: 0.75rem;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 640px) {
  .glass-card {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal,
  .reveal-scale,
  .reveal-left,
  .reveal-right {
    opacity: 1;
    transform: none;
  }
}

/* ============================================================
   SCROLL REVEAL SCRIPT (loaded globally)
   — IntersectionObserver-based, no library needed
   ============================================================ */