/* ==========================================================================
   7BRAIN.ONLINE - QUANTUM DEEP DARK LAB CSS
   ========================================================================== */

:root {
  --bg-quantum: #020008;
  --bg-surface: #070314;
  --bg-card: #0d0624;
  
  --purple-quantum: #7928ca;
  --teal-synaptic: #00dfd8;
  --blue-quantum: #0070f3;
  
  --text-main: #ffffff;
  --text-slate: #cbd5e1;
  --text-muted: #8d84ab;
  --text-dim: #544c70;
  
  --border-quantum: #1a0e38;
  --border-glow: rgba(121, 40, 202, 0.4);
  
  --font-display: 'Cabinet Grotesk', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-body: 'Plus Jakarta Sans', sans-serif;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  overflow-x: hidden;
  max-width: 100%;
}

body.bg-quantum {
  background-color: var(--bg-quantum);
  color: var(--text-slate);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  max-width: 100%;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 16px;
  background: var(--purple-quantum);
  color: #fff;
  padding: 8px 16px;
  font-weight: 700;
  z-index: 9999;
}
.skip-link:focus { top: 16px; }

.page-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Lab Navbar */
.lab-navbar {
  margin-top: 20px;
  background: rgba(7, 3, 20, 0.85);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-quantum);
  border-radius: 16px;
  padding: 14px 24px;
}
.lab-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.lab-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.synapse-icon { font-size: 1.6rem; color: var(--teal-synaptic); }
.lab-brand-title {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.05em;
}
.lab-nav-links { display: flex; gap: 24px; }
.l-link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.l-link:hover { color: var(--teal-synaptic); }

.btn-quantum-outline {
  background: transparent;
  border: 1px solid var(--border-quantum);
  color: var(--teal-synaptic);
  padding: 8px 16px;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}
.btn-quantum-outline:hover { border-color: var(--teal-synaptic); background: rgba(0, 223, 216, 0.1); }

/* HERO: QUANTUM */
.hero-quantum {
  padding: 100px 0 60px;
  text-align: center;
}
.quantum-hero-content {
  max-width: 860px;
  margin: 0 auto;
}
.lab-cohort-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(121, 40, 202, 0.15);
  border: 1px solid var(--border-glow);
  padding: 6px 16px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--teal-synaptic);
  margin-bottom: 24px;
}
.pill-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--teal-synaptic); }

.quantum-hero-title {
  font-family: var(--font-display);
  font-size: 3.8rem;
  font-weight: 900;
  color: #fff;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}
.quantum-hero-lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.quantum-hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.btn-quantum-glow {
  background: linear-gradient(90deg, var(--purple-quantum), var(--blue-quantum));
  color: #fff;
  padding: 14px 28px;
  border-radius: 10px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 0 25px rgba(121, 40, 202, 0.5);
  transition: all 0.2s;
}
.btn-quantum-glow:hover { transform: translateY(-2px); box-shadow: 0 0 35px rgba(121, 40, 202, 0.7); }
.btn-quantum-ghost {
  background: var(--bg-surface);
  border: 1px solid var(--border-quantum);
  color: var(--text-slate);
  padding: 14px 28px;
  border-radius: 10px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  text-decoration: none;
}
.btn-quantum-ghost:hover { border-color: var(--teal-synaptic); color: var(--teal-synaptic); }

.academic-stats-bar {
  display: inline-flex;
  align-items: center;
  gap: 36px;
  background: var(--bg-surface);
  border: 1px solid var(--border-quantum);
  padding: 18px 40px;
  border-radius: 16px;
}
.as-col { display: flex; flex-direction: column; }
.as-val { font-family: var(--font-mono); font-size: 1.4rem; font-weight: 800; color: #fff; }
.as-lbl { font-family: var(--font-mono); font-size: 0.65rem; color: var(--text-dim); }
.as-div { width: 1px; height: 32px; background: var(--border-quantum); }

/* SECTIONS */
.lab-section { padding: 80px 0; border-bottom: 1px solid var(--border-quantum); }
.bg-quantum-dark { background: #010005; }
.lab-section-header { margin-bottom: 48px; text-align: center; }
.lab-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--teal-synaptic);
  display: block;
  margin-bottom: 8px;
}
.lab-title {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 900;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.lab-sub { color: var(--text-muted); font-size: 1rem; }

/* Heptagram Grid */
.heptagram-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.node-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-quantum);
  border-radius: 14px;
  padding: 28px;
  transition: all 0.2s;
}
.node-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
}
.arbiter-card {
  grid-column: span 3;
  border-color: var(--teal-synaptic);
  background: linear-gradient(180deg, rgba(0, 223, 216, 0.05) 0%, var(--bg-surface) 100%);
}
.nc-top { display: flex; justify-content: space-between; margin-bottom: 12px; }
.nc-id { font-family: var(--font-mono); font-size: 0.75rem; font-weight: 800; color: var(--teal-synaptic); }
.nc-role { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-dim); }
.nc-name { font-family: var(--font-display); font-size: 1.35rem; font-weight: 800; color: #fff; margin-bottom: 8px; }
.nc-desc { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; }

/* Consensus Eval Box */
.consensus-eval-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-quantum);
  border-radius: 16px;
  padding: 32px;
  max-width: 960px;
  margin: 0 auto;
}
.eval-head { margin-bottom: 24px; border-bottom: 1px solid var(--border-quantum); padding-bottom: 18px; }
.eval-prompt-label { font-family: var(--font-mono); font-size: 0.7rem; color: var(--teal-synaptic); font-weight: bold; }
.eval-prompt-text { font-family: var(--font-display); font-size: 1.15rem; color: #fff; margin-top: 6px; }

.eval-step-stack { display: flex; flex-direction: column; gap: 16px; }
.eval-step {
  background: #020008;
  border: 1px solid var(--border-quantum);
  border-radius: 10px;
  padding: 16px 20px;
  display: grid;
  grid-template-columns: 80px 1fr 140px;
  align-items: center;
  gap: 20px;
}
.step-num { font-family: var(--font-mono); font-size: 0.75rem; font-weight: 800; color: var(--purple-quantum); }
.step-content { font-size: 0.88rem; color: var(--text-slate); }
.step-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 6px;
  text-align: center;
}
.step-badge.pass { background: rgba(0, 223, 216, 0.1); color: var(--teal-synaptic); }
.step-badge.committed { background: rgba(121, 40, 202, 0.2); color: #fff; border: 1px solid var(--purple-quantum); }

/* Paper Cards */
.preprint-library-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.paper-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-quantum);
  border-radius: 16px;
  padding: 32px;
  display: flex;
  flex-direction: column;
}
.pc-meta { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-dim); margin-bottom: 12px; }
.pc-title { font-family: var(--font-display); font-size: 1.35rem; font-weight: 800; color: #fff; margin-bottom: 8px; line-height: 1.3; }
.pc-authors { font-size: 0.8rem; color: var(--teal-synaptic); margin-bottom: 14px; }
.pc-abstract { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 24px; flex-grow: 1; }
.btn-paper-cite {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--teal-synaptic);
  text-decoration: none;
}
.btn-paper-cite:hover { text-decoration: underline; }

/* Footer */
.lab-footer { padding: 60px 0 40px; border-top: 1px solid var(--border-quantum); }
.lab-footer-inner {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1fr;
  gap: 40px;
}
.lf-text { font-size: 0.85rem; color: var(--text-muted); margin: 14px 0 20px; max-width: 320px; }
.lf-copy { font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-dim); }
.lf-head { font-family: var(--font-mono); font-size: 0.75rem; font-weight: 800; color: #fff; display: block; margin-bottom: 16px; }
.lf-links { display: flex; flex-direction: column; gap: 10px; }
.lf-links a { font-size: 0.85rem; color: var(--text-muted); text-decoration: none; }
.lf-links a:hover { color: var(--teal-synaptic); }

/* Responsive */
@media (max-width: 1024px) {
  .heptagram-grid { grid-template-columns: 1fr; }
  .arbiter-card { grid-column: span 1; }
  .preprint-library-grid { grid-template-columns: 1fr; }
  .eval-step { grid-template-columns: 1fr; gap: 8px; }
  .lab-footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .quantum-hero-title { font-size: 2.4rem; }
  .lab-nav-links { display: none; }
  .academic-stats-bar { flex-direction: column; gap: 16px; width: 100%; border-radius: 16px; }
  .as-div { display: none; }
  .lab-footer-inner { grid-template-columns: 1fr; }
}