/* style.css — full-viewport canvas + collapsible right-hand control panel */

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #0b0d10;
  color: #d7dce2;
  font: 13px/1.45 system-ui, "Segoe UI", sans-serif;
}

/* Both canvases are letterboxed to the domain aspect ratio by
 * layoutCanvases() in main.js (inline left/top/width/height), so grid
 * cells always display square; these are just the pre-boot defaults. */
#glcanvas {
  position: fixed;
  left: 0;
  top: 0;
  width: 100vw;
  height: 100vh;
  display: block;
  cursor: crosshair;
  touch-action: none;          /* pointer events handle painting */
}

/* 2D overlay (ghost preview, streamlines, arrows, tracer particles).
 * Never intercepts input — the GL canvas below owns all pointer events. */
#overlay {
  position: fixed;
  left: 0;
  top: 0;
  width: 100vw;
  height: 100vh;
  display: block;
  pointer-events: none;
  z-index: 2;
}

/* HUD overlay (top-left) */
#hud {
  position: fixed;
  top: 10px;
  left: 12px;
  margin: 0;
  padding: 8px 12px;
  background: rgba(8, 10, 13, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  color: #e8edf2;
  font: 12px/1.5 ui-monospace, Consolas, monospace;
  white-space: pre;
  pointer-events: none;
  z-index: 5;
}

/* Panel toggle (always visible) */
#panel-toggle {
  position: fixed;
  top: 10px;
  right: 10px;
  z-index: 11;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 6px;
  background: rgba(20, 24, 30, 0.85);
  color: #d7dce2;
  font-size: 16px;
  cursor: pointer;
}
#panel-toggle:hover { background: rgba(40, 48, 60, 0.9); }

/* Side panel */
#panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 280px;
  height: 100vh;
  overflow-y: auto;
  padding: 14px 16px 24px;
  background: rgba(14, 17, 22, 0.92);
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(6px);
  z-index: 10;
  transition: transform 0.2s ease;
}
#panel.collapsed { transform: translateX(100%); }

#panel h1 {
  margin: 4px 44px 10px 0;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.4px;
}
#panel h2 {
  margin: 18px 0 8px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #8d97a5;
}
#panel section { border-top: 1px solid rgba(255, 255, 255, 0.06); }
#panel section:first-of-type { border-top: none; }

label {
  display: block;
  margin: 10px 0 2px;
  color: #aeb7c2;
}
label .val {
  float: right;
  color: #6fc3ff;
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  width: 100%;
  margin: 4px 0 2px;
  accent-color: #3b9eff;
}

select,
input[type="number"] {
  width: 100%;
  margin: 4px 0;
  padding: 5px 8px;
  background: #1a2027;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 5px;
  color: #d7dce2;
}

.row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 8px 0;
}
.row input[type="checkbox"] { accent-color: #3b9eff; }
.row input[type="number"] { flex: 1; margin: 0; }
.row input[type="color"] {
  margin-left: auto;
  width: 44px;
  height: 24px;
  padding: 1px;
  background: #1a2027;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 5px;
  cursor: pointer;
}

.segmented {
  display: flex;
  margin: 6px 0;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 6px;
  overflow: hidden;
}
.segmented button {
  flex: 1;
  padding: 6px 0;
  background: transparent;
  border: none;
  border-left: 1px solid rgba(255, 255, 255, 0.10);
  color: #aeb7c2;
  cursor: pointer;
  font: inherit;
}
.segmented button:first-child { border-left: none; }
.segmented button.active { background: #2563eb; color: #fff; }
.segmented button:not(.active):hover { background: rgba(255, 255, 255, 0.06); }

/* Wrapping variant for segmented controls with more than ~3 entries. */
.segmented.wrap { flex-wrap: wrap; }
.segmented.wrap button {
  flex: 1 1 33%;
  min-width: 33%;
  border-top: 1px solid rgba(255, 255, 255, 0.10);
}

.preset-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin: 8px 0;
}
.preset-grid button,
#clear-obstacles {
  padding: 7px 4px;
  background: #1a2027;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 6px;
  color: #d7dce2;
  cursor: pointer;
  font: inherit;
}
.preset-grid button:hover { background: #242c36; }

#clear-obstacles, .wide { width: 100%; }
#reset-flow {
  width: 100%;
  margin-top: 6px;
  padding: 7px 4px;
  background: #1a2027;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 6px;
  color: #d7dce2;
  cursor: pointer;
  font: inherit;
}
#reset-flow:hover { background: #242c36; }
.preset-grid button.placing {
  background: #2563eb;
  border-color: #3b82f6;
  color: #fff;
}
#clear-obstacles.danger { border-color: rgba(255, 90, 90, 0.4); color: #ff9a9a; }
#clear-obstacles.danger:hover { background: rgba(255, 90, 90, 0.12); }

.hint {
  margin: 2px 0 8px;
  color: #76818e;
  font-size: 12px;
}

/* Per-cylinder spin sliders (built dynamically in #cyl-list). */
.cyl-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 4px 0;
}
.cyl-row span:first-child { color: #aeb7c2; white-space: nowrap; }
.cyl-row input[type="range"] { flex: 1; margin: 0; }
.cyl-row .val {
  float: none;
  min-width: 44px;
  text-align: right;
  color: #6fc3ff;
  font-variant-numeric: tabular-nums;
}

/* Microphone spectrum panel (bottom-left, shown while mics exist). */
#spectrum {
  position: fixed;
  left: 12px;
  bottom: 12px;
  display: none;
  background: rgba(8, 10, 13, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 6px;
  z-index: 5;
  pointer-events: none;
}
#mic-add.placing { background: #2563eb; border-color: #3b82f6; color: #fff; }