/* digital-circuits: SICP 3.3.4 agenda-simulation trace explorer. Reuses the
   site's :root tokens (--bg, --bg-content, --text, --text-secondary,
   --accent, --accent-light, --border, --code-bg) from style.css. */

#tool-root { font-size: 15px; }
#tool-root button, #tool-root input, #tool-root select { font: inherit; }

.dc-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: end;
    margin: 1rem 0;
    padding: 1rem 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.dc-ctl label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 13.5px; }
.dc-ctl input[type="number"], .dc-ctl select { padding: 4px 6px; border: 1px solid var(--border); border-radius: 4px; }
.dc-switch { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; font-weight: 600; }
.dc-switch input { margin: 0; }

.dc-result { padding: 0.5rem 0; }
.dc-answer { font-size: 18px; }
.dc-compare { color: var(--text-secondary); margin-top: 4px; }

.dc-transport { position: sticky; top: 0; z-index: 2; background: var(--bg); padding: 10px 0; border-bottom: 1px solid var(--border); }
.dc-tbar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.dc-tbar button { min-width: 34px; height: 30px; border: 1px solid var(--border); background: var(--bg-content); border-radius: 4px; cursor: pointer; padding: 0 8px; }
.dc-tbar button:hover { border-color: var(--accent); }
.dc-tbar .dc-play { min-width: 60px; background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
#dc-step-range { accent-color: var(--accent); }
.dc-steplabel { font: 13px monospace; color: var(--text-secondary); min-width: 12ch; text-align: right; }
.dc-speed { font-size: 13px; color: var(--text-secondary); display: inline-flex; align-items: center; gap: 6px; }
.dc-now { color: var(--text-secondary); font-size: 13px; margin: 4px 0 0; }

.dc-work { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 16px; margin-top: 16px; }
.dc-panel { background: var(--bg-content); border: 1px solid var(--border); border-radius: 6px; padding: 14px 16px; min-width: 0; margin-top: 16px; }
.dc-work .dc-panel { margin-top: 0; }
.dc-panel h2 { font-size: 14px; margin: 0 0 10px; }
.dc-side { display: grid; gap: 16px; align-content: start; min-width: 0; }
.dc-caption { color: var(--text-secondary); font-size: 13px; margin: 0 0 8px; }

.dc-schematic { overflow: auto; }
.dc-schematic svg { display: block; }
.dc-wire { stroke: var(--border); stroke-width: 1.6; }
.dc-wire.dc-hi { stroke: var(--accent); stroke-width: 2; }
.dc-wire.dc-cur { stroke: #c27d0e; stroke-width: 3; }
.dc-gate rect { fill: var(--bg-content); stroke: var(--text-secondary); stroke-width: 1.4; }
.dc-gate.dc-cur rect { stroke: #c27d0e; stroke-width: 3; }
.dc-gate text { font: 600 11px monospace; text-anchor: middle; fill: var(--text); pointer-events: none; }
.dc-pin circle { fill: var(--bg-content); stroke: var(--border); stroke-width: 1.6; }
.dc-pin.dc-hi circle { fill: var(--accent-light); stroke: var(--accent); }
.dc-pinlabel { font: 11px monospace; fill: var(--text-secondary); }

.dc-code { font: 12.5px/1.65 monospace; margin: 0; background: var(--code-bg); padding: 8px; border-radius: 4px; overflow-x: auto; }
.dc-code .dc-ln { display: block; padding: 0 6px; border-left: 3px solid transparent; white-space: pre; }
.dc-code .dc-ln.dc-hl { background: var(--accent-light); border-left-color: var(--accent); }
.dc-event { margin-top: 10px; padding-top: 8px; border-top: 1px solid var(--border); min-height: 3em; font-size: 13.5px; }

.dc-agenda { font: 12.5px/1.5 monospace; max-height: 260px; overflow: auto; }
.dc-seg { margin-bottom: 8px; }
.dc-seg ul { list-style: none; margin: 2px 0 0; padding: 0; }
.dc-seg li { padding: 1px 0 1px 10px; border-left: 2px solid var(--border); }
.dc-empty { color: var(--text-secondary); }

.dc-timingwrap { overflow-x: auto; }
.dc-tlabel { font: 11px monospace; fill: var(--text-secondary); }
.dc-twave { fill: none; stroke: var(--text-secondary); stroke-width: 1.6; }
.dc-twave-in { stroke: var(--accent); }
.dc-tclick { fill: transparent; cursor: pointer; }
.dc-tclick:hover { fill: var(--accent-light); opacity: 0.5; }
.dc-tcursor { stroke: #c27d0e; stroke-width: 1.5; stroke-dasharray: 3 2; }

.dc-cmp { border-collapse: collapse; font-size: 13.5px; }
.dc-cmp th, .dc-cmp td { border: 1px solid var(--border); padding: 4px 10px; text-align: left; }
.dc-cmp tr.dc-cmp-cur { background: var(--accent-light); }

@media (max-width: 900px) {
    .dc-work { grid-template-columns: 1fr; }
}