/* Auto-layout Playground — component styles */

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

html, body {
  height: 100%;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text);
  background: var(--paper-light);
  overflow: hidden;
}

/* ── Layout skeleton ───────────────────────────────────────────────────────── */

body {
  display: flex;
  flex-direction: column;
}

header {
  flex-shrink: 0;
  height: 48px;
  background: var(--header-bg);
  display: flex;
  align-items: center;
  padding: 0 var(--gap-md);
  gap: var(--gap-sm);
}

.toolbar {
  flex-shrink: 0;
  height: 44px;
  background: var(--paper);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 var(--gap-md);
  gap: var(--gap-sm);
}

main {
  flex: 1;
  display: flex;
  overflow: hidden;
  min-height: 0;
}

/* ── Header ────────────────────────────────────────────────────────────────── */

.hub-link {
  color: var(--paper);
  text-decoration: none;
  font-size: 13px;
  opacity: 0.75;
  transition: opacity 0.15s;
}
.hub-link:hover { opacity: 1; }

.app-title {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.session-badge {
  margin-left: var(--gap-xs);
  background: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.65);
  font-size: 11px;
  font-family: var(--font-mono);
  padding: 2px 7px;
  border-radius: 10px;
  letter-spacing: 0.03em;
}

/* ── Toolbar ───────────────────────────────────────────────────────────────── */

.toolbar-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-right: var(--gap-xs);
}

.fixture-group {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.fixture-btn {
  background: var(--paper-light);
  border: none;
  border-right: 1px solid var(--border);
  padding: 0 14px;
  height: 30px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
}
.fixture-btn:last-child { border-right: none; }
.fixture-btn:hover { background: var(--paper); }
.fixture-btn.active {
  background: var(--rust);
  color: #fff;
}

.reset-btn {
  height: 30px;
  padding: 0 12px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  background: var(--paper-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color 0.12s, color 0.12s;
}
.reset-btn:hover { border-color: var(--rust); color: var(--rust); }

.status-line {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}
.status-line.ok   { color: #3a7d44; }
.status-line.fail { color: var(--rust); }

/* ── Canvas panel ──────────────────────────────────────────────────────────── */

.canvas-panel {
  flex: 1;
  overflow: auto;
  background: var(--paper-light);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--gap-lg);
  min-width: 0;
}

#canvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
  border-radius: var(--radius);
  filter: drop-shadow(0 3px 12px rgba(42,37,31,0.14));
}

/* ── Inspector panel ───────────────────────────────────────────────────────── */

.inspector-panel {
  width: 248px;
  flex-shrink: 0;
  background: var(--paper);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.inspector-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--gap-sm);
  color: var(--text-muted);
  font-size: 13px;
  opacity: 0.6;
}
.inspector-empty svg {
  opacity: 0.5;
}

/* Inspector when a node is selected */
.inspector-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.inspector-header {
  flex-shrink: 0;
  padding: 10px var(--gap-md) 8px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.inspector-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--gap-xs) 0;
}

.inspector-section {
  padding: 6px var(--gap-md) 2px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
  margin-top: 6px;
}

.field-row {
  display: flex;
  align-items: center;
  padding: 3px var(--gap-md);
  gap: var(--gap-sm);
  min-height: 28px;
}

.field-row label {
  width: 68px;
  flex-shrink: 0;
  font-size: 12px;
  color: var(--text-muted);
}

.field-row input[type="text"],
.field-row input[type="number"],
.field-row select {
  flex: 1;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--paper-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2px 6px;
  color: var(--text);
  outline: none;
  transition: border-color 0.12s;
}
.field-row input:focus,
.field-row select:focus { border-color: var(--rust); }

.field-row input[type="checkbox"] {
  accent-color: var(--rust);
  width: 14px;
  height: 14px;
}

.field-row .dim-pair {
  display: flex;
  gap: var(--gap-xs);
  flex: 1;
}
.field-row .dim-pair input {
  width: 50px;
  flex: 1;
}

.computed-box {
  margin: 6px var(--gap-md);
  padding: 6px 8px;
  background: var(--paper-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.computed-box .computed-lbl {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
  display: block;
  margin-bottom: 3px;
}
.computed-box code {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--rust);
  white-space: nowrap;
}

.inspector-actions {
  flex-shrink: 0;
  padding: 8px var(--gap-md) 12px;
  display: flex;
  gap: var(--gap-sm);
  border-top: 1px solid var(--border);
}

.btn {
  flex: 1;
  height: 28px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.btn-add {
  background: var(--paper-light);
  color: var(--text);
}
.btn-add:hover { border-color: var(--rust); color: var(--rust); }

.btn-del {
  background: var(--paper-light);
  color: var(--text-muted);
}
.btn-del:hover { background: #ffeee8; border-color: var(--rust); color: var(--rust); }

/* Scrollbar */
.inspector-scroll::-webkit-scrollbar { width: 4px; }
.inspector-scroll::-webkit-scrollbar-track { background: transparent; }
.inspector-scroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }