/* ═══════════════════════════════════════
   P31 LABS — phosphorus31.org
   Design tokens + base styles
   Extracted from index.html for subpage inheritance
   ═══════════════════════════════════════ */

/* ── DESIGN TOKENS ── */
:root {
  --void: #06060f;
  --void-up: #0a0a1a;
  --surface: #0f0f24;
  --surface-up: #161638;
  --border: #1a1a3a;
  --border-bright: #2a2a5a;
  --dim: #6a6a8a;
  --muted: #9898b0;
  --text: #c8c8e0;
  --bright: #e8e8f0;
  --white: #f0f0ff;

  --p31-green: #2ecc71;
  --p31-green-dim: #1a7a43;
  --p31-cyan: #00d4ff;
  --p31-cyan-dim: #0088aa;
  --p31-amber: #f59e0b;
  --p31-violet: #a78bfa;
  --p31-magenta: #ff00cc;

  --font-body: 'Outfit', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  --max-w: 720px;
  --gap: clamp(1rem, 3vw, 2rem);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--void);
  color: var(--text);
  line-height: 1.7;
  font-size: clamp(15px, 1.6vw, 17px);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--p31-green);
  color: var(--void);
}

a {
  color: var(--p31-cyan);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { color: var(--p31-green); }

/* ── BACKGROUND GRAIN ── */
body::before {
  content: '';
  position: fixed;
  inset: 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: 0;
}

/* ── LAYOUT ── */
.container {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gap);
}

/* ── HEADER / HERO ── */
header {
  padding: clamp(3rem, 8vh, 6rem) 0 clamp(2rem, 4vh, 3rem);
  border-bottom: 1px solid var(--border);
}

.org-name {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}

.org-name .p31 { color: var(--p31-green); }

.org-type {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  font-weight: 300;
  color: var(--muted);
  max-width: 560px;
  line-height: 1.5;
}

.tagline strong {
  color: var(--bright);
  font-weight: 500;
}

/* ── NAV ── */
nav {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

nav a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--dim);
  letter-spacing: 0.04em;
  transition: color 0.2s;
}
nav a:hover { color: var(--p31-green); }

/* ── SECTIONS ── */
section {
  padding: clamp(2rem, 5vh, 3.5rem) 0;
  border-bottom: 1px solid var(--border);
}

section:last-of-type { border-bottom: none; }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--p31-green);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.3rem, 3vw, 1.6rem);
  font-weight: 600;
  color: var(--bright);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--bright);
  margin: 1.5rem 0 0.5rem;
}

p + p { margin-top: 0.75rem; }

/* ── PRODUCT CARDS ── */
.products {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

.product {
  background: var(--void-up);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.25rem 1.5rem;
  transition: border-color 0.3s;
}

.product:hover { border-color: var(--border-bright); }

.product-name {
  font-weight: 600;
  color: var(--white);
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
}

.product-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--p31-green-dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.product p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ── PUBLICATION LIST ── */
.pub {
  background: var(--void-up);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.25rem 1.5rem;
  margin-top: 0.75rem;
}

.pub-title { font-weight: 600; color: var(--bright); }
.pub-meta { font-family: var(--font-mono); font-size: 0.75rem; color: var(--dim); margin-top: 0.25rem; }
.pub-doi { font-family: var(--font-mono); font-size: 0.75rem; margin-top: 0.25rem; }
.pub-doi a { color: var(--p31-cyan); }

/* ── IDENTITY GRID ── */
.id-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.id-card {
  background: var(--void-up);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  transition: border-color 0.3s;
}

.id-card:hover { border-color: var(--border-bright); }

.id-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.id-value {
  font-size: 0.85rem;
  color: var(--p31-cyan);
  word-break: break-all;
}

/* ── STATS ROW ── */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.stat {
  text-align: center;
  padding: 1rem 0.5rem;
  background: var(--void-up);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.stat-num {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--p31-green);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ── CTA ── */
.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  border-radius: 5px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: all 0.25s;
}

.cta-primary {
  background: var(--p31-green);
  color: var(--void);
  font-weight: 600;
}
.cta-primary:hover {
  background: #3ddb80;
  color: var(--void);
  transform: translateY(-1px);
}

.cta-secondary {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}
.cta-secondary:hover {
  border-color: var(--p31-cyan);
  color: var(--p31-cyan);
}

/* ── FOOTER ── */
footer {
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--border);
}

.footer-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

.footer-legal { font-size: 0.75rem; color: var(--dim); }

.footer-links { display: flex; gap: 1.25rem; }
.footer-links a { font-family: var(--font-mono); font-size: 0.7rem; color: var(--dim); letter-spacing: 0.04em; }

.footer-tag {
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--border-bright);
  letter-spacing: 0.08em;
}

/* ── MOLECULE ANNOTATION ── */
.molecule {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--dim);
  margin-top: 1.5rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--void-up);
  line-height: 1.8;
}

.molecule .formula { color: var(--p31-green); font-weight: 600; }
.molecule .element { color: var(--p31-cyan); }
.molecule .note { color: var(--dim); font-style: italic; }

/* ── PRINT STYLESHEET ── */
@media print {
  :root {
    --void: #ffffff;
    --void-up: #f8f8f8;
    --surface: #f0f0f0;
    --border: #cccccc;
    --dim: #666666;
    --muted: #444444;
    --text: #222222;
    --bright: #111111;
    --white: #000000;
    --p31-green: #1a7a43;
    --p31-cyan: #006688;
    --p31-green-dim: #1a7a43;
  }

  body {
    background: white;
    color: #222;
    font-size: 11pt;
    line-height: 1.5;
  }

  body::before { display: none; }

  .container { max-width: 100%; padding: 0; }

  header { padding: 0 0 1rem; }

  .org-name { font-size: 18pt; color: #000; }
  .org-name .p31 { color: #1a7a43; }

  nav { display: none; }

  section { padding: 1rem 0; page-break-inside: avoid; }

  .product, .pub, .id-card, .stat, .molecule {
    border: 1px solid #ccc;
    background: #f8f8f8;
  }

  .cta-group { display: none; }

  a { color: #006688; }
  a[href]::after { content: " (" attr(href) ")"; font-size: 8pt; color: #888; }
  nav a[href]::after { display: none; }

  footer { border-top: 1px solid #ccc; padding: 0.5rem 0; }
  .footer-tag { color: #999; }

  @page {
    size: letter;
    margin: 0.75in 1in;
  }
}

/* ── RESPONSIVE ── */
@media (max-width: 480px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .id-grid { grid-template-columns: 1fr; }
  .cta-group { flex-direction: column; }
  .cta { justify-content: center; }
}