/* ── Design tokens ─────────────────────────────────── */
:root {
  --bg:             #0C0C0A;
  --bg-surface:     #131311;
  --bg-raised:      #1A1A17;
  --text-primary:   #E8E4D8;
  --text-secondary: #8C8679;
  --text-muted:     #524F49;
  --accent:         #9AA8B8;
  --border:         #252520;
  --border-soft:    #1E1E1B;

  --section-lg: 8rem;
  --section-md: 5rem;
  --section-sm: 3.5rem;

  --ease-hover: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-hover:  200ms;
  --dur-reveal: 600ms;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Grain overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  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-size: 256px 256px;
  opacity: 0.22;
  mix-blend-mode: overlay;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Playfair Display', serif;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 0;
}

p { margin: 0 0 1.25rem; color: var(--text-secondary); }
p:last-child { margin-bottom: 0; }

a { color: var(--accent); text-decoration: none; transition: color var(--dur-hover) var(--ease-hover); }
a:hover { text-decoration: none; }

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

/* ── Layout ─────────────────────────────────────────── */
.container-wide {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 2rem;
}

.container-read {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding-top: var(--section-lg);
  padding-bottom: var(--section-lg);
}

.section-divider {
  width: 100%;
  height: 1px;
  background: var(--border);
}

/* ── Navigation ─────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 60px;
  display: flex;
  align-items: center;
  padding: 0 2rem;
  justify-content: space-between;
  transition: background-color var(--dur-hover) var(--ease-hover),
              backdrop-filter var(--dur-hover) var(--ease-hover),
              border-color var(--dur-hover) var(--ease-hover);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background-color: rgba(12, 12, 10, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--border);
}

.nav-logo {
  font-family: 'DM Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-logo:hover { color: var(--text-primary); }

.nav-links {
  display: flex;
  gap: 2.5rem;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-family: 'Inter', sans-serif;
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.01em;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color var(--dur-hover) var(--ease-hover),
              border-color var(--dur-hover) var(--ease-hover);
}

.nav-link:hover { color: var(--text-primary); }

.nav-link.active {
  color: var(--text-primary);
  border-bottom-color: var(--text-primary);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--text-primary);
  flex-direction: column;
  gap: 5px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1px;
  background: currentColor;
  transition: opacity var(--dur-hover) var(--ease-hover),
              transform var(--dur-hover) var(--ease-hover);
}

/* Mobile overlay */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 300ms var(--ease-hover);
}

.nav-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.nav-overlay .nav-link {
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  letter-spacing: -0.02em;
  color: var(--text-secondary);
  border-bottom: none;
  padding-bottom: 0;
}

.nav-overlay .nav-link:hover { color: var(--text-primary); }

.nav-overlay-close {
  position: absolute;
  top: 1.25rem;
  right: 2rem;
  background: none;
  border: none;
  cursor: pointer;
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ── Typography utilities ────────────────────────────── */
.section-label {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: block;
  margin-bottom: 2rem;
}

.meta {
  font-family: 'DM Mono', monospace;
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.tag {
  font-family: 'DM Mono', monospace;
  font-size: 0.68rem;
  color: var(--text-muted);
  border: 1px solid var(--border-soft);
  padding: 0.18rem 0.5rem;
  border-radius: 4px;
  display: inline-block;
}

.status-badge {
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.18rem 0.6rem;
  border-radius: 20px;
  display: inline-block;
}

/* ── Buttons ─────────────────────────────────────────── */
.btn-ghost {
  display: inline-block;
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
  border: 1px solid var(--border);
  padding: 0.65rem 1.4rem;
  border-radius: 2px;
  text-decoration: none;
  transition: border-color var(--dur-hover) var(--ease-hover),
              color var(--dur-hover) var(--ease-hover);
  cursor: pointer;
  background: transparent;
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Link variants ───────────────────────────────────── */
.link-underline {
  position: relative;
  color: var(--text-primary);
  text-decoration: none;
}

.link-underline::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--dur-hover) var(--ease-hover);
}

.link-underline:hover::after { width: 100%; }
.link-underline:hover { color: var(--text-primary); }

.link-read {
  font-family: 'DM Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur-hover) var(--ease-hover);
}

.link-read:hover { color: var(--text-primary); }

.link-mono {
  font-family: 'DM Mono', monospace;
  font-size: 0.8rem;
  color: var(--accent);
  text-decoration: none;
  transition: color var(--dur-hover) var(--ease-hover);
}

.link-mono:hover { color: var(--text-primary); }

.link-footer {
  font-family: 'DM Mono', monospace;
  font-size: 0.72rem;
  color: var(--text-muted);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color var(--dur-hover) var(--ease-hover);
}

.link-footer:hover { color: var(--accent); }

/* ── Reveal animation ────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--dur-reveal) cubic-bezier(0.4, 0, 0.2, 1),
              transform var(--dur-reveal) cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ── Footer ─────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
}

.site-footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-footer__links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.site-footer__copy {
  font-family: 'DM Mono', monospace;
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 1024px) {
  .section {
    padding-top: var(--section-md);
    padding-bottom: var(--section-md);
  }
}

@media (max-width: 768px) {
  .container-wide,
  .container-read {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .section {
    padding-top: var(--section-sm);
    padding-bottom: var(--section-sm);
  }

  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
}