/* sculpt.css — Sculpt Your Shape modal */

#sculpt-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms cubic-bezier(0.16, 1, 0.3, 1);
}
#sculpt-overlay.open {
  opacity: 1;
  pointer-events: all;
}

/* ── Header ── */
#sculpt-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}
#sculpt-header h2 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  flex: 1;
}
#sculpt-header p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: none;
}
#btn-sculpt-close {
  width: 32px; height: 32px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted);
  transition: background var(--transition-interactive), color var(--transition-interactive);
}
#btn-sculpt-close:hover { background: var(--color-surface-offset); color: var(--color-text); }

/* ── Body ── */
#sculpt-body {
  display: flex;
  flex: 1;
  overflow: hidden;
  gap: 0;
}

/* ── Left panel: shape picker + sliders ── */
#sculpt-left {
  width: 300px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  padding: var(--space-5) var(--space-5);
  gap: var(--space-5);
}

.sculpt-section-label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

/* Shape picker grid */
#sculpt-shape-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}
.sculpt-shape-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-2);
  border-radius: var(--radius-lg);
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--text-xs);
  font-weight: 600;
  cursor: pointer;
  transition: border-color var(--transition-interactive), background var(--transition-interactive), box-shadow var(--transition-interactive);
}
.sculpt-shape-btn svg { color: var(--color-text-muted); transition: color var(--transition-interactive); }
.sculpt-shape-btn:hover { border-color: var(--color-primary); background: var(--color-primary-highlight); }
.sculpt-shape-btn:hover svg { color: var(--color-primary); }
.sculpt-shape-btn.active {
  border-color: var(--color-primary);
  background: var(--color-primary-highlight);
  box-shadow: 0 0 0 3px oklch(from var(--color-primary) l c h / 0.15);
}
.sculpt-shape-btn.active svg { color: var(--color-primary); }

/* Sliders */
#sculpt-sliders {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.sculpt-param {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.sculpt-param-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.sculpt-param-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.sculpt-param-value {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-primary);
  font-weight: 700;
}
.sculpt-param input[type="range"] {
  width: 100%;
  accent-color: var(--color-primary);
  cursor: pointer;
  height: 4px;
}
.sculpt-param-hint {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* Equation preview */
#sculpt-equation-box {
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text);
  word-break: break-all;
  line-height: 1.7;
}
#sculpt-equation-box .eq-label {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-1);
}

/* Add to Graph button */
#btn-sculpt-add {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-primary);
  color: #fff;
  font-size: var(--text-sm);
  font-weight: 700;
  border-radius: var(--radius-md);
  transition: background var(--transition-interactive), box-shadow var(--transition-interactive);
}
#btn-sculpt-add:hover { background: var(--color-primary-hover); box-shadow: var(--shadow-md); }
#btn-sculpt-add:active { background: var(--color-primary-active); }

/* ── Right panel: 3D preview ── */
#sculpt-preview-wrap {
  flex: 1;
  position: relative;
  background: var(--color-surface);
  overflow: hidden;
}
#sculpt-canvas {
  display: block;
  width: 100%;
  height: 100%;
}
#sculpt-preview-hint {
  position: absolute;
  bottom: var(--space-4);
  right: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  pointer-events: none;
}