/* dna.css — Dark scientific theme s light toggle */
:root {
  --bg-primary: #0a0f1a;
  --bg-secondary: #111827;
  --bg-card: #1a2030;
  --bg-card-header: #222a3a;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: #2d3748;
  --color-ok: #00ff88;
  --color-warn: #ffaa00;
  --color-error: #ff4455;
  --color-info: #00ccff;
  --color-accent: #7c3aed;
  --font-mono: 'Courier New', 'Consolas', monospace;
}
[data-theme="light"] {
  --bg-primary: #f0f4f8;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-header: #f7fafc;
  --text-primary: #1a202c;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --border: #e2e8f0;
  --color-ok: #059669;
  --color-warn: #d97706;
  --color-error: #dc2626;
  --color-info: #2563eb;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg-primary); color: var(--text-primary); font-family: var(--font-mono); min-height: 100vh; }
.nav { display: flex; align-items: center; gap: 1rem; padding: .5rem 1.5rem; background: var(--bg-secondary); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
.nav-brand { display: flex; align-items: center; gap: .5rem; }
.nav-logo { font-size: 1.4rem; color: var(--color-ok); }
.nav-title { font-weight: bold; font-size: 1rem; }
.nav-node-id { font-size: .7rem; color: var(--text-muted); background: var(--bg-card); padding: 2px 6px; border-radius: 4px; }
.nav-links { display: flex; gap: .5rem; margin-left: auto; }
.nav-link { color: var(--text-secondary); text-decoration: none; padding: .3rem .8rem; border-radius: 4px; font-size: .85rem; }
.nav-link:hover, .nav-link.active { background: var(--bg-card); color: var(--text-primary); }
.nav-controls { display: flex; align-items: center; gap: .5rem; }
.status-dot { font-size: 1.2rem; color: var(--color-warn); cursor: default; }
.theme-btn { background: none; border: 1px solid var(--border); color: var(--text-primary); padding: .2rem .5rem; border-radius: 4px; cursor: pointer; font-size: .9rem; }
.main-content { padding: 1.5rem; max-width: 1400px; margin: 0 auto; }
.page-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.5rem; }
.page-header h1 { font-size: 1.4rem; }
.subtitle { color: var(--text-muted); font-size: .85rem; }
.node-badge { background: var(--bg-card); border: 1px solid var(--border); padding: .3rem .7rem; border-radius: 6px; font-size: .8rem; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.card-wide { grid-column: span 2; }
.card-full { grid-column: 1 / -1; }
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.card-header { background: var(--bg-card-header); padding: .6rem 1rem; font-size: .85rem; color: var(--text-secondary); display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border); }
.status-large { font-size: 1.4rem; font-weight: bold; padding: 1rem; text-align: center; }
.ok { color: var(--color-ok); }
.error { color: var(--color-error); }
.warn { color: var(--color-warn); }
.stat { padding: .8rem 1rem; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; }
.stat-label { color: var(--text-muted); font-size: .8rem; }
.stat-value { font-size: .9rem; font-weight: bold; }
.stat-value.ok { color: var(--color-ok); }
.stat-value.error { color: var(--color-error); }
.stat-value.warn { color: var(--color-warn); }
.hash-display { font-family: var(--font-mono); font-size: .75rem; color: var(--color-info); padding: .8rem 1rem; word-break: break-all; background: var(--bg-secondary); border-bottom: 1px solid var(--border); }
.integrity-display { padding: 0; }
.error-msg { padding: .5rem 1rem; color: var(--color-error); font-size: .8rem; }
.hex-explorer { overflow-x: auto; }
.hex-header, .hex-line { display: flex; gap: 1rem; padding: .2rem .8rem; font-size: .75rem; font-family: var(--font-mono); }
.hex-header { background: var(--bg-card-header); color: var(--text-muted); border-bottom: 1px solid var(--border); }
.hex-line:hover { background: var(--bg-secondary); }
.hex-offset { color: var(--text-muted); width: 60px; flex-shrink: 0; }
.hex-bytes { color: var(--color-info); width: 360px; flex-shrink: 0; letter-spacing: .05em; }
.hex-ascii { color: var(--color-ok); letter-spacing: .1em; }
.hex-lines { max-height: 400px; overflow-y: auto; }
.hex-empty, .hex-error { padding: 1rem; color: var(--text-muted); text-align: center; font-size: .85rem; }
.audit-stream { max-height: 350px; overflow-y: auto; }
.audit-event { display: flex; gap: .7rem; padding: .35rem .8rem; border-bottom: 1px solid var(--border); font-size: .78rem; align-items: baseline; }
.audit-event.audit-critical { border-left: 3px solid var(--color-error); background: rgba(255,68,85,.05); }
.audit-event.audit-warning { border-left: 3px solid var(--color-warn); }
.audit-event.audit-info { border-left: 3px solid var(--border); }
.ae-time { color: var(--text-muted); flex-shrink: 0; width: 70px; }
.ae-type { color: var(--color-info); flex-shrink: 0; width: 220px; }
.ae-peer { color: var(--color-accent); flex-shrink: 0; font-size: .72rem; }
.ae-details { color: var(--text-secondary); }
.event-feed { max-height: 300px; overflow-y: auto; padding: .5rem; }
.event-item { display: flex; gap: .5rem; padding: .3rem; border-radius: 4px; margin-bottom: 2px; font-size: .78rem; }
.event-critical { background: rgba(255,68,85,.1); }
.event-warning { background: rgba(255,170,0,.08); }
.event-time { color: var(--text-muted); }
.event-type { color: var(--color-info); font-weight: bold; }
.event-peer { color: var(--color-accent); }
.event-details { color: var(--text-secondary); }
.btn { background: var(--bg-card-header); border: 1px solid var(--border); color: var(--text-primary); padding: .4rem .9rem; border-radius: 5px; cursor: pointer; font-family: var(--font-mono); font-size: .82rem; }
.btn:hover { border-color: var(--color-info); }
.btn-ok { border-color: var(--color-ok); color: var(--color-ok); }
.btn-warn { border-color: var(--color-warn); color: var(--color-warn); }
.btn-danger { border-color: var(--color-error); color: var(--color-error); }
.btn-small { font-size: .75rem; padding: .2rem .5rem; background: var(--bg-card-header); border: 1px solid var(--border); color: var(--text-primary); border-radius: 4px; cursor: pointer; font-family: var(--font-mono); }
.action-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; padding: 1rem; }
.action-result, .debug-result { padding: .5rem 1rem; font-size: .8rem; }
.result-ok { color: var(--color-ok); }
.result-error { color: var(--color-error); }
.result-warn { color: var(--color-warn); }
.badge { background: var(--bg-secondary); border: 1px solid var(--border); padding: 2px 8px; border-radius: 10px; font-size: .75rem; }
.kv { display: flex; justify-content: space-between; padding: .5rem 1rem; border-bottom: 1px solid var(--border); font-size: .85rem; }
.kv span:first-child { color: var(--text-muted); }
.counter-grid { display: flex; gap: 1rem; padding: 1rem; }
.counter { text-align: center; flex: 1; padding: .8rem; background: var(--bg-secondary); border-radius: 6px; }
.counter.ok { border: 1px solid var(--color-ok); }
.counter.error { border: 1px solid var(--color-error); }
.counter.warn { border: 1px solid var(--color-warn); }
.counter-n { font-size: 2rem; font-weight: bold; }
.counter.ok .counter-n { color: var(--color-ok); }
.counter.error .counter-n { color: var(--color-error); }
.counter.warn .counter-n { color: var(--color-warn); }
.counter-l { font-size: .75rem; color: var(--text-muted); margin-top: .3rem; }
.manifest-status { padding: 0; }
canvas { display: block; width: 100%; }
@media (max-width: 900px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .card-wide, .card-full { grid-column: 1; }
}