/* ============================================================================
   UN WORKFLOW SYSTEM — Design System
   main.css — Tokens, Reset, Typography, Utilities
   ============================================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@300;400;500&display=swap');

/* ============================================================================
   DESIGN TOKENS
   ============================================================================ */
:root {
  /* Colors */
  --color-bg-primary:    #0a0e17;
  --color-bg-secondary:  #0f1520;
  --color-bg-tertiary:   #151c2c;
  --color-bg-card:       rgba(255,255,255,0.03);
  --color-bg-glass:      rgba(255,255,255,0.04);
  --color-border-glass:  rgba(255,255,255,0.08);
  --color-border-subtle: rgba(255,255,255,0.05);

  --color-gold:          #c9a84c;
  --color-gold-bright:   #e8c84a;
  --color-gold-dim:      #8a7230;
  --color-blue-un:       #4b9cd3;
  --color-blue-bright:   #5bb8f5;
  --color-blue-dim:      #2a5f80;
  --color-teal:          #3ecfb4;
  --color-red:           #e85555;
  --color-green:         #5ecc6e;
  --color-purple:        #a78bfa;

  --color-text-primary:  #e8e6e3;
  --color-text-secondary: rgba(232,230,227,0.6);
  --color-text-tertiary:  rgba(232,230,227,0.35);
  --color-text-accent:   var(--color-gold);

  /* Typography */
  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', 'Cascadia Mono', monospace;

  --fs-hero:    clamp(3.5rem, 10vw, 9rem);
  --fs-h1:      clamp(2.5rem, 5vw, 5rem);
  --fs-h2:      clamp(1.8rem, 3.5vw, 3rem);
  --fs-h3:      clamp(1.2rem, 2vw, 1.8rem);
  --fs-body:    clamp(0.95rem, 1.2vw, 1.1rem);
  --fs-small:   clamp(0.8rem, 1vw, 0.9rem);
  --fs-caption: clamp(0.7rem, 0.8vw, 0.8rem);
  --fs-mono:    clamp(0.75rem, 0.9vw, 0.85rem);

  --lh-tight:    1.1;
  --lh-snug:     1.3;
  --lh-normal:   1.6;
  --lh-relaxed:  1.8;

  --ls-tight:    -0.03em;
  --ls-normal:   0;
  --ls-wide:     0.08em;
  --ls-ultra:    0.2em;

  /* Spacing */
  --space-xs:   0.5rem;
  --space-sm:   1rem;
  --space-md:   2rem;
  --space-lg:   4rem;
  --space-xl:   8rem;
  --space-2xl:  12rem;

  /* Borders */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full: 50%;

  /* Glass */
  --glass-blur:       blur(20px);
  --glass-blur-heavy: blur(40px);

  /* Shadow */
  --shadow-sm:   0 2px 8px rgba(0,0,0,0.3);
  --shadow-md:   0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg:   0 8px 40px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(201,168,76,0.15);

  /* Transitions */
  --ease-smooth:  cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-bounce:  cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-expo:    cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast:   0.2s;
  --duration-normal: 0.4s;
  --duration-slow:   0.8s;

  /* 3D */
  --perspective:    1200px;
  --perspective-lg: 2000px;

  /* Z-index */
  --z-base:    1;
  --z-above:   10;
  --z-nav:     100;
  --z-modal:   500;
  --z-toast:   1000;
}

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

html {
  font-size: 16px;
  scroll-behavior: auto; /* Lenis handles smooth scroll */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: var(--lh-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
  min-height: 100vh;
}

/* Hide scrollbar but keep function (Lenis provides custom) */
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }

img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
input, textarea, select { font-family: inherit; }

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

/* ============================================================================
   TYPOGRAPHY
   ============================================================================ */
.t-display {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
}

.t-heading {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: var(--lh-snug);
}

.t-body { font-family: var(--font-body); line-height: var(--lh-normal); }
.t-mono { font-family: var(--font-mono); font-size: var(--fs-mono); letter-spacing: var(--ls-wide); }
.t-label {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: var(--ls-ultra);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.t-gold { color: var(--color-gold); }
.t-blue { color: var(--color-blue-un); }
.t-secondary { color: var(--color-text-secondary); }

/* ============================================================================
   GLASS PANELS
   ============================================================================ */
.glass {
  background: var(--color-bg-glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-lg);
}

.glass-card {
  background: var(--color-bg-glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  transition: border-color var(--duration-normal) var(--ease-smooth),
              box-shadow var(--duration-normal) var(--ease-smooth),
              transform var(--duration-normal) var(--ease-smooth);
}

.glass-card:hover {
  border-color: rgba(201,168,76,0.2);
  box-shadow: var(--shadow-glow);
}

/* ============================================================================
   3D PERSPECTIVE CONTAINERS
   ============================================================================ */
.perspective-container {
  perspective: var(--perspective);
  perspective-origin: center center;
}

.tilt-card {
  transform-style: preserve-3d;
  transition: transform var(--duration-normal) var(--ease-smooth);
  will-change: transform;
}

/* ============================================================================
   PARALLAX UTILITIES
   ============================================================================ */
.parallax-section {
  position: relative;
  overflow: hidden;
}

.parallax-layer {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 120%;
  will-change: transform;
}

.parallax-layer--deep { z-index: 0; }
.parallax-layer--mid  { z-index: 1; }
.parallax-layer--front { z-index: 2; }
.parallax-content { position: relative; z-index: 3; }

/* ============================================================================
   SCROLL-TRIGGERED ANIMATION STATES
   ============================================================================ */
.reveal {
  opacity: 0;
  transform: translateY(60px);
  transition: opacity var(--duration-slow) var(--ease-expo),
              transform var(--duration-slow) var(--ease-expo);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-80px);
  transition: opacity var(--duration-slow) var(--ease-expo),
              transform var(--duration-slow) var(--ease-expo);
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(80px);
  transition: opacity var(--duration-slow) var(--ease-expo),
              transform var(--duration-slow) var(--ease-expo);
}

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

.reveal-scale {
  opacity: 0;
  transform: scale(0.85);
  transition: opacity var(--duration-slow) var(--ease-expo),
              transform var(--duration-slow) var(--ease-expo);
}

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

/* Mask reveal (text clip) */
.mask-reveal {
  clip-path: inset(0 100% 0 0);
  transition: clip-path 1.2s var(--ease-expo);
}

.mask-reveal.is-visible {
  clip-path: inset(0 0% 0 0);
}

/* ============================================================================
   LAYOUT UTILITIES
   ============================================================================ */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container--wide { max-width: 1600px; }
.container--narrow { max-width: 900px; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.section-padding { padding: var(--space-xl) 0; }
.section-padding--lg { padding: var(--space-2xl) 0; }

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

/* ============================================================================
   BUTTONS
   ============================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  font-weight: 500;
  letter-spacing: var(--ls-ultra);
  text-transform: uppercase;
  padding: 0.9rem 2rem;
  border-radius: var(--radius-xl);
  transition: all var(--duration-normal) var(--ease-smooth);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity var(--duration-fast);
}

.btn:hover::before { opacity: 1; }

.btn-gold {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-bright));
  color: var(--color-bg-primary);
  border: none;
}

.btn-gold:hover {
  box-shadow: 0 0 30px rgba(201,168,76,0.4);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-glass);
}

.btn-outline:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */
@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .container { padding: 0 var(--space-sm); }
  .section-padding { padding: var(--space-lg) 0; }
}

/* ============================================================================
   SECTION DIVIDERS
   ============================================================================ */
.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border-glass), transparent);
  margin: var(--space-lg) 0;
}

.section-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.section-label::before {
  content: '';
  width: 40px;
  height: 1px;
  background: var(--color-gold);
}

/* ============================================================================
   SCROLL INDICATOR
   ============================================================================ */
.scroll-indicator {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0.5;
  animation: scrollBounce 2s ease-in-out infinite;
}

.scroll-indicator__line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-gold), transparent);
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* ============================================================================
   LOADING / PRELOADER
   ============================================================================ */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--color-bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.preloader.loaded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.preloader__text {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  color: var(--color-gold);
  letter-spacing: var(--ls-ultra);
}

/* ============================================================================
   ORGAN COLOR ACCENTS
   ============================================================================ */
[data-organ="GA"]  { --organ-color: #4b9cd3; }
[data-organ="SC"]  { --organ-color: #e85555; }
[data-organ="ECOSOC"] { --organ-color: #3ecfb4; }
[data-organ="ICJ"] { --organ-color: #c9a84c; }
[data-organ="SEC"] { --organ-color: #a78bfa; }
[data-organ="TC"]  { --organ-color: #f59e0b; }