/* shared.css — nav, footer, base tokens used by all pages */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0a0a0b;
  --bg-2: #111113;
  --bg-3: #18181c;
  --border: rgba(255,255,255,0.07);
  --border-hover: rgba(255,255,255,0.15);
  --text: #e8e8e4;
  --text-muted: #888884;
  --text-faint: #444440;
  --accent: #00e5a0;
  --accent-dim: rgba(0,229,160,0.12);
  --font-mono: 'JetBrains Mono', monospace;
  --font-display: 'Syne', sans-serif;
  --nav-h: 64px;
  --max-w: 1100px;
  --radius: 8px;
  --radius-lg: 14px;
  --ease: cubic-bezier(0.16,1,0.3,1);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
strong { font-weight: 700; color: #fff; }

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-hover); border-radius: 2px; }

/* Nav */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  background: rgba(10,10,11,0.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  color: #fff;
}

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

.nav-links { display: flex; gap: 2px; }

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
  letter-spacing: 0.5px;
}

.nav-link:hover, .nav-link.active { color: var(--text); background: var(--bg-3); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span { display: block; width: 22px; height: 1.5px; background: var(--text); }

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #000;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 12px 24px;
  border-radius: var(--radius);
  transition: all 0.2s var(--ease);
  letter-spacing: 0.5px;
}

.btn-primary:hover { background: #fff; transform: translateY(-2px); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 11px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border-hover);
  transition: all 0.2s var(--ease);
}

.btn-ghost:hover { background: var(--bg-3); border-color: var(--text-muted); transform: translateY(-2px); }

.arrow { transition: transform 0.2s; }
.btn-primary:hover .arrow, .btn-ghost:hover .arrow { transform: translateX(4px); }

/* Section layout */
.page-content {
  padding-top: var(--nav-h);
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: 40px;
  padding-right: 40px;
}

.page-hero {
  padding: 80px 0 60px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 70px;
}

.page-tag {
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: block;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -1.5px;
  line-height: 1.1;
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 560px;
  line-height: 1.9;
}

/* Section headers */
.section-label {
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 32px;
  display: block;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 40px;
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: var(--max-w);
  margin: 80px auto 0;
}

.footer-logo { font-family: var(--font-display); font-weight: 800; font-size: 1.1rem; color: #fff; }
.footer-copy { font-size: 0.72rem; color: var(--text-faint); }
.footer-links { margin-left: auto; display: flex; gap: 20px; }
.footer-links a { font-size: 0.72rem; color: var(--text-faint); transition: color 0.2s; }
.footer-links a:hover { color: var(--text-muted); }

/* Tags */
.tag {
  font-size: 0.68rem;
  color: var(--text-muted);
  background: var(--bg-3);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: 4px;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.reveal.visible { opacity: 1; transform: none; }

/* Mobile */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav { padding: 0 24px; }
  .nav.open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--bg-2);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px 20px;
    gap: 4px;
  }
  .page-content { padding-left: 24px; padding-right: 24px; }
  .footer { padding: 24px; flex-direction: column; text-align: center; gap: 12px; }
  .footer-links { margin-left: 0; }
}