/* ============================================
   SAFETY DAY 2026 — DESIGN SYSTEM
   Base styles, typography, reset, CSS variables
   ============================================ */

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { overflow-x: hidden; background: var(--bg-deep); color: var(--text-primary); font-family: var(--font-body); line-height: 1.6; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }

/* --- Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Barlow+Condensed:wght@400;500;600;700&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* --- CSS Variables (overridden per theme) --- */
:root {
  /* Base colors (dark industrial) */
  --bg-deep: #0A0A0A;
  --bg-surface: #141414;
  --bg-elevated: #1E1E1E;
  --bg-card: #1A1A1A;

  /* Text */
  --text-primary: #F0F0F0;
  --text-secondary: #999999;
  --text-dim: #666666;
  --text-accent: var(--accent);

  /* Accent (overridden per concept) */
  --accent: #D4920B;
  --accent-glow: rgba(212, 146, 11, 0.15);
  --accent-dim: rgba(212, 146, 11, 0.4);

  /* Grid */
  --grid-line: rgba(255, 255, 255, 0.03);
  --grid-line-accent: rgba(212, 146, 11, 0.06);

  /* Corporate */
  --ktk-blue: #1B3A5C;

  /* Typography */
  --font-display: 'Bebas Neue', 'Barlow Condensed', sans-serif;
  --font-display-secondary: 'Barlow Condensed', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-2xl: 10rem;

  /* Borders */
  --border-subtle: 1px solid rgba(255, 255, 255, 0.06);
  --border-accent: 1px solid var(--accent-dim);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 0.3s;
  --duration-normal: 0.6s;
  --duration-slow: 1s;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 64px;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  hyphens: none;
  -webkit-hyphens: none;
  word-break: keep-all;
  overflow-wrap: normal;
}

h1 {
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 700;
  letter-spacing: 0.02em;
}

h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--space-md);
}

h3 {
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 500;
  color: var(--text-secondary);
}

h4 {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.1em;
}

p {
  font-size: clamp(0.95rem, 1.2vw, 1.1rem);
  color: var(--text-secondary);
  max-width: 65ch;
}

.text-large {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  line-height: 1.5;
}

.text-mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--accent);
}

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

/* Pull quote */
.pull-quote {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 300;
  line-height: 1.3;
  color: var(--text-primary);
  border-left: 3px solid var(--accent);
  padding-left: var(--space-md);
  margin: var(--space-lg) 0;
  max-width: 50ch;
}

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

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

.section-header {
  margin-bottom: var(--space-xl);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-sm);
  display: block;
}

/* Divider */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-dim), transparent);
  margin: var(--space-xl) 0;
}

/* --- Grid Background --- */
.grid-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    repeating-linear-gradient(0deg, transparent, transparent 79px, var(--grid-line) 79px, var(--grid-line) 80px),
    repeating-linear-gradient(90deg, transparent, transparent 79px, var(--grid-line) 79px, var(--grid-line) 80px);
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: var(--space-2xl) var(--space-md);
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  filter: brightness(0.4) contrast(1.2);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,10,10,0.3) 0%, rgba(10,10,10,0.8) 60%, var(--bg-deep) 100%);
}

.hero h1 {
  position: relative;
  z-index: 1;
}

.hero .slogan {
  font-family: var(--font-body);
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 300;
  color: var(--text-secondary);
  margin-top: var(--space-md);
  max-width: 45ch;
  position: relative;
  z-index: 1;
}

.hero .scroll-hint {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  color: var(--text-dim);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* --- Sticky Nav --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: var(--border-subtle);
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0 var(--space-md);
  transform: translateY(-100%);
  transition: transform var(--duration-fast) var(--ease-out);
}

.nav.visible {
  transform: translateY(0);
}

.nav-brand {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: var(--space-md);
  margin-left: auto;
  list-style: none;
}

.nav-links a {
  font-size: 0.8rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  transition: color var(--duration-fast);
  text-transform: uppercase;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
}

/* --- Progress Bar --- */
.progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: var(--accent);
  z-index: 101;
  width: 0%;
  transition: width 0.1s linear;
}

/* --- Animated Counter --- */
.counter {
  font-family: var(--font-mono);
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
}

.counter-label {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.counters-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-lg);
  padding: var(--space-xl) 0;
}

/* --- Reveal Animations (GSAP adds .revealed) --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-60px);
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}

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

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}

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

/* Staggered children */
.stagger > * {
  opacity: 0;
  transform: translateY(30px);
}

.stagger.revealed > * {
  opacity: 1;
  transform: translateY(0);
}

.stagger.revealed > *:nth-child(1) { transition-delay: 0s; }
.stagger.revealed > *:nth-child(2) { transition-delay: 0.1s; }
.stagger.revealed > *:nth-child(3) { transition-delay: 0.2s; }
.stagger.revealed > *:nth-child(4) { transition-delay: 0.3s; }
.stagger.revealed > *:nth-child(5) { transition-delay: 0.4s; }
.stagger.revealed > *:nth-child(6) { transition-delay: 0.5s; }
.stagger.revealed > *:nth-child(7) { transition-delay: 0.6s; }
.stagger.revealed > *:nth-child(8) { transition-delay: 0.7s; }

/* --- Responsive --- */
@media (max-width: 768px) {
  :root {
    --space-lg: 2rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
  }

  .container {
    padding: 0 var(--space-sm);
  }

  .nav-links { display: none; }
}