/* phys8-interactives.css
 * Стили для drag-and-drop виджетов, scrubbers, tooltips, badges,
 * палитр компонентов (для circuit builder), readout-табло.
 * Расширяет phys-textbook-widgets.css.
 */

/* === Drag handle (cursor + микро-эффект) === */
.p8-draggable {
  cursor: grab;
  touch-action: none;
  user-select: none;
  transition: filter .18s, transform .18s;
}
.p8-draggable:hover {
  filter: brightness(1.05);
}
.p8-draggable:active,
.p8-draggable.is-dragging {
  cursor: grabbing;
  filter: brightness(1.12) drop-shadow(0 6px 12px rgba(0,0,0,.18));
  z-index: 10;
}

/* === Drop target (зона приёма) === */
.p8-droptarget {
  border: 2px dashed var(--p8-brand-l, #c4b5fd);
  border-radius: 12px;
  padding: 14px;
  background: rgba(124, 58, 237, .04);
  transition: border-color .2s, background .2s, transform .2s;
  min-height: 60px;
  position: relative;
}
.p8-droptarget.p8-drop-over {
  border-style: solid;
  border-color: var(--p8-brand, #7c3aed);
  background: rgba(124, 58, 237, .10);
  transform: scale(1.02);
}
.p8-theme-thermal .p8-droptarget.p8-drop-over { border-color: var(--th-mid); background: rgba(249,115,22,.10); }
.p8-theme-electric .p8-droptarget.p8-drop-over { border-color: var(--el-mid); background: rgba(6,182,212,.10); }
.p8-theme-spectrum .p8-droptarget.p8-drop-over { border-color: var(--sp-mid-v); background: rgba(168,85,247,.10); }

/* === Component palette (для circuit builder и т.д.) === */
.p8-palette {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px;
  background: rgba(0,0,0,.04);
  border-radius: 12px;
  margin-bottom: 14px;
}
.p8-palette-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--p8-brand-soft, #ede9fe);
  border: 1.5px solid var(--p8-brand-l, #c4b5fd);
  border-radius: 10px;
  cursor: grab;
  font-size: .86rem;
  font-weight: 600;
  color: var(--p8-brand-d, #5b21b6);
  transition: transform .15s, box-shadow .15s, background .15s;
  touch-action: none;
}
.p8-palette-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(0,0,0,.10);
  background: #fff;
}
.p8-palette-item:active { cursor: grabbing; }
.p8-palette-item svg { width: 22px; height: 22px; }

/* === Scrubber (диапазонный ползунок с подписью) === */
.p8-scrubber {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: rgba(0,0,0,.03);
  border-radius: 10px;
  margin-bottom: 10px;
}
.p8-scrubber-label {
  font-size: .82rem;
  font-weight: 700;
  color: var(--p8-text);
  min-width: 80px;
}
.p8-scrubber input[type="range"] {
  flex: 1;
  accent-color: var(--p8-brand, #7c3aed);
  height: 6px;
}
.p8-theme-thermal .p8-scrubber input[type="range"] { accent-color: var(--th-mid); }
.p8-theme-electric .p8-scrubber input[type="range"] { accent-color: var(--el-mid); }
.p8-theme-spectrum .p8-scrubber input[type="range"] { accent-color: var(--sp-mid-v); }
.p8-scrubber-value {
  font-family: var(--p8-mono);
  font-weight: 700;
  font-size: .92rem;
  color: var(--p8-ink);
  min-width: 70px;
  text-align: right;
}
.p8-scrubber-value .p8-unit {
  margin-left: 3px;
}

/* === Readout табло (для live-данных симуляции) === */
.p8-readout {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  padding: 6px 12px;
  background: var(--p8-ink, #0f172a);
  color: #f1f5f9;
  border-radius: 8px;
  font-family: var(--p8-mono);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -.01em;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.10);
}
.p8-readout-label {
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #94a3b8;
  margin-right: 6px;
}
.p8-readout-value {
  color: #fff;
  font-size: 1.1em;
  min-width: 1em;
  display: inline-block;
  transition: color .2s;
}
.p8-readout-value.is-changing {
  color: #fde047;
}
.p8-readout-unit {
  color: #94a3b8;
  font-weight: 600;
  font-size: .82em;
  margin-left: 3px;
}

/* === Tooltip (всплывающие подсказки на drag-объектах) === */
.p8-tooltip {
  position: absolute;
  pointer-events: none;
  padding: 6px 10px;
  background: rgba(15, 23, 42, .94);
  color: #fff;
  font-size: .76rem;
  font-weight: 600;
  border-radius: 8px;
  z-index: 100;
  white-space: nowrap;
  box-shadow: 0 6px 14px rgba(0,0,0,.20);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .15s, transform .15s;
}
.p8-tooltip.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.p8-tooltip::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 8px; height: 8px;
  background: inherit;
}

/* === Badge (тематический значок IV-N, статус) === */
.p8-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 99px;
  font-size: .68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-family: var(--p8-display);
}
.p8-badge.p8-badge-thermal { background: var(--th-soft, #fff7ed); color: var(--th-mid, #f97316); }
.p8-badge.p8-badge-electric { background: var(--el-soft, #ecfeff); color: var(--el-mid, #06b6d4); }
.p8-badge.p8-badge-spectrum { background: var(--sp-soft, #fdf2f8); color: var(--sp-mid-v, #a855f7); }

/* === Sandbox canvas (для drag-сцен) === */
.p8-sandbox {
  position: relative;
  width: 100%;
  background:
    linear-gradient(135deg, #fafafa 0%, #f3f4f6 100%);
  border: 1.5px solid #e5e7eb;
  border-radius: 12px;
  overflow: hidden;
  cursor: default;
}
html.dark .p8-sandbox {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  border-color: #334155;
}
.p8-sandbox canvas,
.p8-sandbox svg {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}
.p8-sandbox-toolbar {
  position: absolute;
  top: 10px; left: 10px;
  display: flex;
  gap: 6px;
  z-index: 5;
}
.p8-sandbox-btn {
  padding: 5px 10px;
  background: rgba(255,255,255,.92);
  border: 1px solid #e5e7eb;
  border-radius: 7px;
  font-size: .76rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--p8-body);
  transition: background .15s;
}
.p8-sandbox-btn:hover { background: #fff; }
html.dark .p8-sandbox-btn { background: rgba(15,23,42,.92); border-color: #334155; color: #f1f5f9; }
html.dark .p8-sandbox-btn:hover { background: #1e293b; }

/* === Snap-to-grid индикатор === */
.p8-snap-line {
  position: absolute;
  pointer-events: none;
  background: var(--p8-brand, #7c3aed);
  opacity: .35;
  z-index: 4;
  transition: opacity .12s;
}
.p8-snap-line.horizontal { left: 0; right: 0; height: 1px; }
.p8-snap-line.vertical { top: 0; bottom: 0; width: 1px; }

/* === Thermometer (вертикальный термометр для thermal sandbox) === */
.p8-thermometer {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}
.p8-thermometer-bulb {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ef4444, #dc2626);
  border: 2px solid #991b1b;
  box-shadow: 0 0 12px rgba(239,68,68,.45);
}
.p8-thermometer-tube {
  width: 10px;
  height: 90px;
  margin-bottom: -2px;
  background: linear-gradient(to top, #ef4444 var(--p8-temp, 50%), #f3f4f6 var(--p8-temp, 50%));
  border: 2px solid #475569;
  border-bottom: none;
  border-radius: 5px 5px 0 0;
}
.p8-thermometer-scale {
  position: absolute;
  left: 100%; top: 10px;
  margin-left: 4px;
  font-family: var(--p8-mono);
  font-size: .68rem;
  color: var(--p8-muted);
  white-space: nowrap;
}

/* === Compass needle (для magnetic compass) === */
.p8-compass {
  width: 120px; height: 120px;
  position: relative;
  border-radius: 50%;
  background: radial-gradient(circle, #fff 0%, #f1f5f9 100%);
  border: 3px solid #475569;
  box-shadow: inset 0 2px 4px rgba(0,0,0,.10), 0 4px 10px rgba(0,0,0,.10);
}
.p8-compass::before,
.p8-compass::after {
  content: ''; position: absolute;
  left: 50%; top: 50%;
  background: #475569;
  transform-origin: center;
}
.p8-compass::before { /* N marker */
  content: 'N';
  top: 6px; left: 50%;
  transform: translateX(-50%);
  background: transparent;
  font-family: var(--p8-display);
  font-weight: 900;
  font-size: .82rem;
  color: #dc2626;
}
.p8-compass-needle {
  position: absolute;
  left: 50%; top: 50%;
  width: 6px;
  height: 84px;
  transform: translate(-50%, -50%) rotate(var(--p8-needle-angle, 0deg));
  transform-origin: center;
  transition: transform .35s cubic-bezier(.34, 1.56, .64, 1);
  z-index: 2;
  pointer-events: none;
}
.p8-compass-needle::before,
.p8-compass-needle::after {
  content: ''; position: absolute;
  left: 0; width: 100%;
  height: 50%;
}
.p8-compass-needle::before {
  top: 0;
  background: linear-gradient(to bottom, #dc2626, #b91c1c);
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}
.p8-compass-needle::after {
  bottom: 0;
  background: linear-gradient(to top, #475569, #1e293b);
  clip-path: polygon(50% 100%, 100% 0, 0 0);
}

/* === Particle Glow (для частиц газа / искр / лучей) === */
.p8-glow {
  filter: drop-shadow(0 0 6px currentColor);
}

/* === Animation utility classes === */
.p8-anim-jitter { animation: p8-jitter .35s ease infinite alternate; }
@keyframes p8-jitter {
  0%   { transform: translate(0, 0); }
  100% { transform: translate(1px, -1px); }
}
.p8-anim-shimmer {
  background-image: linear-gradient(105deg, transparent 40%, rgba(255,255,255,.4) 50%, transparent 60%);
  background-size: 250% 100%;
  animation: p8-shimmer 1.4s linear infinite;
}
@keyframes p8-shimmer {
  0%   { background-position: 250% 0; }
  100% { background-position: -150% 0; }
}

/* === Reduced motion === */
@media (prefers-reduced-motion: reduce) {
  .p8-draggable, .p8-droptarget, .p8-tooltip,
  .p8-compass-needle, .p8-readout-value,
  .p8-anim-jitter, .p8-anim-shimmer {
    transition: none !important;
    animation: none !important;
  }
}