/* =============================================================================
   FORGE — Base Styles
   Reset, typography, noise overlay, global utilities
   ============================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700;800;900&family=Space+Mono:ital,wght@0,400;0,700;1,400&display=swap');

/* Noise Overlay */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  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)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: var(--z-noise);
  opacity: 0.5;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--color-text-primary);
}

h1 {
  font-weight: var(--weight-black);
  font-size: clamp(48px, 6vw, 88px);
  line-height: var(--leading-none);
  letter-spacing: var(--tracking-tight);
}

h2 {
  font-weight: var(--weight-heavy);
  font-size: clamp(32px, 4vw, 52px);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-snug);
}

h3 {
  font-weight: var(--weight-bold);
  font-size: var(--text-xl);
  line-height: var(--leading-snug);
}

h4 {
  font-weight: var(--weight-bold);
  font-size: var(--text-md);
  line-height: var(--leading-snug);
}

p {
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-secondary);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-default);
}

a:hover {
  color: var(--color-accent-hover);
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Skip to content */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-3) var(--space-6);
  background: var(--color-accent);
  color: var(--color-text-inverse);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  z-index: 10000;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.skip-link:focus {
  top: var(--space-4);
}

/* Section Label */
.section-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: var(--tracking-ultra);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-6);
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

@media (max-width: 1024px) {
  .container { padding: 0 var(--gutter-tablet); }
}

@media (max-width: 768px) {
  .container { padding: 0 var(--gutter-mobile); }
}

/* Section */
.section {
  padding: var(--space-16) 0;
}

.section--alt {
  background: var(--color-bg-secondary);
}

/* Grid background pattern */
.grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 107, 26, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 107, 26, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 100%);
  pointer-events: none;
}

/* Scroll reveal classes */
.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-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

/* Image treatment */
.img-forge {
  filter: grayscale(40%) contrast(1.05);
  transition: filter var(--duration-slow) var(--ease-default),
              transform var(--duration-slow) var(--ease-default);
}

.img-forge:hover {
  filter: grayscale(0%) contrast(1.1);
  transform: scale(1.05);
}

/* Chamfer clips */
.chamfer-sm {
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.chamfer-md {
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.chamfer-lg {
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 30px 100%, 0 calc(100% - 30px));
}

/* Utility */
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.font-mono { font-family: var(--font-mono); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-left, .reveal-right {
    opacity: 1;
    transform: none;
    transition: none;
  }
}