/* FoundryZero — shared styles */
:root {
  --bg: #0a0a0b;
  --bg-1: #111113;
  --bg-2: #16161a;
  --line: #1e1e22;
  --line-2: #26262c;
  --fg: #f2efe9;
  --fg-dim: #a9a49a;
  --fg-muted: #6b6860;
  --accent-hue: 42;
  --accent-chroma: 0.16;
  --accent-l: 0.72;
  --accent: oklch(var(--accent-l) var(--accent-chroma) var(--accent-hue));
  --accent-dim: oklch(0.55 calc(var(--accent-chroma) * 0.7) var(--accent-hue));
  --accent-soft: oklch(0.32 calc(var(--accent-chroma) * 0.5) var(--accent-hue) / 0.18);
  --accent-glow: oklch(var(--accent-l) var(--accent-chroma) var(--accent-hue) / 0.22);
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --grid: 8px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: 0 0, 0 0;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

::selection { background: var(--accent); color: #0a0a0b; }

.mono { font-family: var(--mono); font-feature-settings: "zero" 1, "ss01" 1; }

/* Cursor-following accent glow */
.cursor-glow {
  position: fixed;
  top: 0; left: 0;
  width: 520px; height: 520px;
  margin-left: -260px; margin-top: -260px;
  pointer-events: none;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
  z-index: 1;
  transform: translate3d(-1000px,-1000px,0);
  transition: opacity 0.3s ease;
  mix-blend-mode: screen;
  filter: blur(40px);
}

/* Nav */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  background: linear-gradient(to bottom, rgba(10,10,11,0.92) 0%, rgba(10,10,11,0.6) 70%, transparent 100%);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.nav.scrolled {
  background: rgba(10,10,11,0.88);
  border-bottom-color: var(--line);
}
.nav .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--fg);
}
.nav .logo-mark {
  width: 22px; height: 22px;
  display: inline-block;
  position: relative;
}
.nav .logo-mark svg { width: 100%; height: 100%; display: block; }
.nav .logo .slash { color: var(--fg-muted); margin: 0 4px; }
.nav .logo .zero { color: var(--accent); }
.nav-links {
  display: flex;
  gap: 28px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--fg-dim);
}
.nav-links a {
  position: relative;
  padding: 4px 0;
  transition: color 0.18s ease;
}
.nav-links a:hover { color: var(--fg); }
.nav-links a.active { color: var(--accent); }
.nav-links a::before {
  content: "";
  color: var(--fg-muted);
  margin-right: 6px;
  opacity: 0.5;
}
.nav-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-muted);
}
.status-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: oklch(0.7 0.17 145);
  box-shadow: 0 0 8px oklch(0.7 0.17 145 / 0.7);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

/* Frame / gutters */
.frame {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 40;
  border: 1px solid transparent;
}
.frame::before, .frame::after {
  content: "";
  position: absolute;
  width: 14px; height: 14px;
  border: 1px solid var(--line-2);
}
.frame::before { top: 12px; left: 12px; border-right: 0; border-bottom: 0; }
.frame::after { bottom: 12px; right: 12px; border-left: 0; border-top: 0; }
.frame .tr { position: absolute; top: 12px; right: 12px; width: 14px; height: 14px; border: 1px solid var(--line-2); border-left: 0; border-bottom: 0; }
.frame .bl { position: absolute; bottom: 12px; left: 12px; width: 14px; height: 14px; border: 1px solid var(--line-2); border-right: 0; border-top: 0; }

.side-marker {
  position: fixed;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--fg-muted);
  letter-spacing: 0.1em;
  z-index: 40;
  pointer-events: none;
}
.side-marker.left {
  left: 18px;
  top: 50%;
  transform: translateY(-50%) rotate(-90deg);
  transform-origin: left center;
}
.side-marker.right {
  right: 18px;
  bottom: 32px;
}

/* Containers */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 64px;
  position: relative;
  z-index: 2;
}

section { position: relative; z-index: 2; }

/* Section label */
.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 32px;
}
.section-label .idx {
  color: var(--accent);
  border: 1px solid var(--accent-soft);
  padding: 2px 8px;
  background: oklch(0.3 0.08 var(--accent-hue) / 0.12);
}
.section-label .line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--line-2), transparent);
}

/* Headings */
h1, h2, h3 { font-family: var(--sans); font-weight: 500; letter-spacing: -0.02em; }
h1 { font-size: clamp(44px, 6vw, 88px); line-height: 1.02; letter-spacing: -0.035em; }
h2 { font-size: clamp(32px, 3.4vw, 52px); line-height: 1.08; letter-spacing: -0.025em; }
h3 { font-size: 22px; line-height: 1.25; }

p { color: var(--fg-dim); max-width: 62ch; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 12px 18px;
  border: 1px solid var(--line-2);
  background: var(--bg-1);
  color: var(--fg);
  cursor: pointer;
  transition: all 0.18s ease;
  position: relative;
  text-transform: uppercase;
}
.btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: oklch(0.3 0.08 var(--accent-hue) / 0.1);
}
.btn .arrow { transition: transform 0.18s ease; }
.btn:hover .arrow { transform: translateX(3px); }
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #0a0a0b;
  font-weight: 600;
}
.btn.primary:hover {
  background: oklch(0.78 var(--accent-chroma) var(--accent-hue));
  color: #0a0a0b;
}

/* Code / prompt */
.prompt-line {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-dim);
  display: flex;
  align-items: center;
  gap: 8px;
}
.prompt-line::before {
  content: "$";
  color: var(--accent);
}

.kbd {
  font-family: var(--mono);
  font-size: 10px;
  padding: 2px 6px;
  border: 1px solid var(--line-2);
  background: var(--bg-1);
  border-radius: 2px;
  color: var(--fg-dim);
}

/* Hairline */
hr.hair {
  border: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--line-2) 20%, var(--line-2) 80%, transparent);
  margin: 0;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
.reveal.delay-1 { transition-delay: 0.08s; }
.reveal.delay-2 { transition-delay: 0.16s; }
.reveal.delay-3 { transition-delay: 0.24s; }
.reveal.delay-4 { transition-delay: 0.32s; }

/* Footer */
footer.site-footer {
  border-top: 1px solid var(--line);
  padding: 80px 0 40px;
  margin-top: 120px;
  position: relative;
  z-index: 2;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
}
.footer-grid h4 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 16px;
  font-weight: 500;
}
.footer-grid ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-grid a { font-family: var(--mono); font-size: 13px; color: var(--fg-dim); }
.footer-grid a:hover { color: var(--accent); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-muted);
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

/* Utility */
.mono-meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--fg-muted);
}
.accent { color: var(--accent); }
.dim { color: var(--fg-dim); }
.muted { color: var(--fg-muted); }

/* Blink cursor */
.blink {
  display: inline-block;
  width: 0.6ch;
  height: 1em;
  background: var(--accent);
  vertical-align: text-bottom;
  margin-left: 2px;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* Responsive */
@media (max-width: 880px) {
  .container { padding: 0 24px; }
  .nav { padding: 14px 20px; }
  .nav-links { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .side-marker { display: none; }
}