/* ============================================
   BASE — Reset, Typography, Global Styles
   ============================================ */

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

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

/* ── Micro-answers (GEO: AI-extractable summaries, visually hidden) ── */
.micro-answer {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.micro-answer strong {
  font-weight: var(--weight-regular);
}

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

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

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

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
}

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

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--weight-regular);
  line-height: var(--leading-tight);
  color: var(--text-primary);
  letter-spacing: var(--tracking-tight);
}

h1 {
  font-size: var(--text-3xl);
  line-height: 1.05;
}

h2 {
  font-size: var(--text-2xl);
}

h3 {
  font-size: var(--text-xl);
}

h4 {
  font-size: var(--text-lg);
}

h5 {
  font-size: var(--text-base);
}

h6 {
  font-size: var(--text-sm);
}

p {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
  max-width: 65ch;
}

.text-muted {
  color: var(--text-muted);
}

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

/* ── Label / Overline ── */
.overline {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--accent);
}

/* ── Blockquote ── */
blockquote {
  border-left: 2px solid var(--accent);
  padding-left: var(--space-lg);
  margin: var(--space-xl) 0;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-style: italic;
  line-height: var(--leading-snug);
  color: var(--text-primary);
}

blockquote cite {
  display: block;
  margin-top: var(--space-md);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-style: normal;
  color: var(--text-muted);
  letter-spacing: var(--tracking-wide);
}

/* ── Horizontal Rule ── */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-2xl) 0;
}

/* ── Focus States ── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ── Scroll Animations ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Staggered children - parent gets the class, children animate */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(15px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal-stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}

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

/* ── Skip to content ── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--accent);
  color: var(--bg-primary);
  font-weight: var(--weight-semibold);
  z-index: var(--z-toast);
  transition: top var(--transition-fast);
}

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

/* ── Noise Texture Overlay (absolute positioned child) ── */
.noise-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.03;
  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;
  background-size: 256px 256px;
}

/* ── Noise Background (pseudo-element version) ── */
.noise-bg {
  position: relative;
}

.noise-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.03;
  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");
  pointer-events: none;
}

/* ── Hero Gradient ── */
.hero-gradient {
  background:
    radial-gradient(ellipse at 20% 50%, rgba(201, 168, 92, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(201, 168, 92, 0.02) 0%, transparent 50%),
    var(--bg-primary);
}