/* trash.house / labs Shared Foundation CSS Tokens */
:root {
  --bg-base: #07090e;
  --bg-surface: #0e131f;
  --bg-elevated: #151c2e;
  --bg-card: #121826;
  --bg-terminal: #0a0d14;

  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-medium: rgba(255, 255, 255, 0.14);
  --border-glow: rgba(56, 189, 248, 0.28);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --accent-cyan: #38bdf8;
  --accent-purple: #a855f7;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Fira Code', 'JetBrains Mono', ui-monospace, monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

html {
  scroll-behavior: smooth;
}

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

body {
  background-color: var(--bg-base);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Background Ambient Glow */
.ambient-glow {
  position: absolute;
  width: 650px;
  height: 650px;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.12;
}

.glow-center {
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, var(--accent-cyan), transparent);
}

.glow-right {
  top: 600px;
  right: -100px;
  background: radial-gradient(circle, var(--accent-purple), transparent);
}

.glow-emerald {
  top: 400px;
  left: -100px;
  background: radial-gradient(circle, var(--accent-emerald), transparent);
}

/* Container */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Global Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  background: rgba(7, 9, 14, 0.85);
  border-bottom: 1px solid var(--border-subtle);
  padding: 14px 0;
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
}

.nav-hub-link {
  color: var(--text-main);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.15s;
}

.nav-hub-link:hover {
  color: var(--accent-cyan);
}

.nav-separator {
  color: var(--text-dim);
}

.nav-project-tag {
  color: var(--text-muted);
}

.nav-project-tag.active {
  color: var(--accent-cyan);
  font-weight: 700;
}

/* Provenance Transparency Badge */
.provenance-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  text-decoration: none;
  transition: all 0.15s;
}

.provenance-badge:hover {
  border-color: var(--border-medium);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 6px var(--accent-cyan);
}

.badge-dot.emerald {
  background: var(--accent-emerald);
  box-shadow: 0 0 6px var(--accent-emerald);
}

/* Buttons & Links */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all 0.15s ease-in-out;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--bg-elevated);
  color: var(--accent-cyan);
  border-color: var(--border-glow);
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.12);
}

.btn-primary:hover {
  background: rgba(56, 189, 248, 0.12);
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.22);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border-subtle);
}

.btn-ghost:hover {
  color: #fff;
  border-color: var(--border-medium);
  background: rgba(255, 255, 255, 0.03);
}

/* Common Section */
.section {
  padding: 80px 0;
}

.sub-header {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  margin-bottom: 8px;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 50px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 40px;
  background: var(--bg-base);
  margin-top: 80px;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-brand-title {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: #fff;
}

.footer-copy {
  color: var(--text-dim);
  font-size: 0.85rem;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: var(--accent-cyan);
}

.copyright {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-content {
    flex-wrap: wrap;
  }
  .provenance-badge {
    order: 3;
    width: 100%;
    justify-content: center;
    margin-top: 6px;
  }
  .footer-content, .footer-meta {
    align-items: flex-start;
  }
}