/* ═══════════════════════════════════════════════════════
   LDR Brightness & Resistance Simulation — Modal Styles
   ═══════════════════════════════════════════════════════ */

/* ── Modal Overlay ── */
.ldr-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15,15,26,0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 99999;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.ldr-modal-overlay.open { display: flex; }

.ldr-modal {
  background: var(--canvas, #F4F1FA);
  border-radius: var(--radius-card, 32px);
  padding: 24px;
  width: 100%;
  max-width: 1000px;
  max-height: 92vh;
  position: relative;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  overflow-y: auto;
}

.ldr-modal-close {
  position: absolute;
  top: 16px;
  right: 20px;
  background: rgba(255,255,255,0.85);
  border: 1px solid rgba(160,150,180,0.15);
  border-radius: 14px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--text-muted, #635F69);
  cursor: pointer;
  z-index: 10;
  transition: all var(--dur-fast, 200ms) var(--ease-smooth, cubic-bezier(0.16,1,0.3,1));
  box-shadow: var(--shadow-card, 16px 16px 32px rgba(160,150,180,0.2));
}
.ldr-modal-close:hover {
  color: var(--accent-rose, #F43F5E);
  background: rgba(255,255,255,1);
}

/* ── Modal header ── */
.ldr-header {
  text-align: center;
  margin-bottom: 18px;
  padding-right: 44px;
}
.ldr-header h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 800;
  background: linear-gradient(90deg, #ffd27a, #ffe9b3, #8fd0ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}
.ldr-header p {
  font-size: 0.85rem;
  color: var(--text-muted, #635F69);
}

/* ── Stage (scene SVG) ── */
.ldr-stage-wrap {
  background: linear-gradient(180deg, rgba(20,32,58,.9), rgba(10,17,32,.9));
  border: 1px solid rgba(120,160,220,.18);
  border-radius: var(--radius-card, 32px);
  overflow: hidden;
  padding: 8px;
  margin-bottom: 12px;
  box-shadow: 0 24px 60px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.04);
}
.ldr-stage-wrap svg.ldr-stage {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
}

/* ── Controls bar ── */
.ldr-controls {
  background: rgba(255,255,255,0.5);
  border: 1px solid rgba(160,150,180,0.1);
  border-radius: 16px;
  padding: 14px 16px;
  margin-bottom: 14px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
}
.ldr-ctl-label {
  font-weight: 700;
  font-size: 14px;
  color: var(--text-primary, #332F3A);
  min-width: 180px;
}
.ldr-ctl-label .ldr-ctl-val {
  color: var(--accent-amber, #F59E0B);
  font-weight: 800;
}
.ldr-slider-box {
  flex: 1;
  min-width: 180px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.ldr-slider-box span {
  font-size: 12px;
  color: #94a3b8;
}
.ldr-slider-box input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 8px;
  background: linear-gradient(90deg, #ffd27a, #4a86ff);
  outline: none;
  cursor: pointer;
}
.ldr-slider-box input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fff, #bcd2ff 40%, #4a86ff);
  border: 2px solid #fff;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(74,134,255,.6);
}
.ldr-slider-box input[type="range"]::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid #fff;
  background: #7db0ff;
  cursor: pointer;
}
.ldr-btn {
  border: none;
  border-radius: var(--radius-btn, 20px);
  cursor: pointer;
  font-weight: 700;
  font-size: 0.82rem;
  font-family: var(--font-body);
  transition: all var(--dur-fast, 200ms);
  line-height: 1;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  padding: 10px 18px;
}
.ldr-btn:hover { filter: brightness(1.08); transform: translateY(-1px); }
.ldr-btn:active { transform: scale(0.97); }
.ldr-btn-reset {
  background: linear-gradient(180deg, #ff7a7a, #e0454f);
  box-shadow: 0 6px 18px rgba(224,69,79,.4);
}

/* ── Readout card grid ── */
.ldr-readout-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 14px;
}
@media (max-width: 640px) {
  .ldr-readout-grid { grid-template-columns: 1fr; }
}
.ldr-stat {
  background: var(--card-bg, rgba(255,255,255,0.65));
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(160,150,180,0.12);
  border-radius: var(--radius-card, 32px);
  padding: 16px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card, 16px 16px 32px rgba(160,150,180,0.2));
}
.ldr-stat::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--ldr-accent, #7db0ff);
}
.ldr-stat .ldr-k {
  font-size: 12px;
  letter-spacing: .5px;
  text-transform: uppercase;
  color: #94a3b8;
}
.ldr-stat .ldr-v {
  font-size: 30px;
  font-weight: 800;
  margin-top: 4px;
  color: var(--ldr-accent, var(--text-primary, #332F3A));
}
.ldr-stat .ldr-d {
  font-size: 11.5px;
  color: #94a3b8;
  margin-top: 6px;
}
.ldr-bar {
  margin-top: 12px;
  height: 8px;
  border-radius: 6px;
  background: rgba(0,0,0,0.06);
  overflow: hidden;
}
.ldr-bar > i {
  display: block;
  height: 100%;
  border-radius: 6px;
  background: var(--ldr-accent, #7db0ff);
  width: 0%;
  transition: width .35s cubic-bezier(.4,0,.2,1);
}

/* ── Lower panels: circuit + graph ── */
.ldr-lower-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 16px;
  margin-bottom: 14px;
}
@media (max-width: 760px) {
  .ldr-lower-grid { grid-template-columns: 1fr; }
}
.ldr-panel {
  background: var(--card-bg, rgba(255,255,255,0.65));
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(160,150,180,0.12);
  border-radius: var(--radius-card, 32px);
  padding: 18px;
  box-shadow: var(--shadow-card, 16px 16px 32px rgba(160,150,180,0.2));
}
.ldr-panel h3 {
  font-family: var(--font-heading);
  font-size: 15px;
  color: var(--text-primary, #332F3A);
  margin: 0 0 8px 0;
}
.ldr-panel p {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-muted, #635F69);
}
.ldr-panel svg.ldr-circuit {
  width: 100%;
  height: auto;
  display: block;
}
.ldr-panel svg.ldr-graph {
  width: 100%;
  height: auto;
  display: block;
}
.ldr-legend {
  font-size: 11px;
  fill: #94a3b8;
}

/* ── Info panel ── */
.ldr-info {
  background: var(--card-bg, rgba(255,255,255,0.65));
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(160,150,180,0.12);
  border-radius: var(--radius-card, 32px);
  padding: 18px;
  box-shadow: var(--shadow-card, 16px 16px 32px rgba(160,150,180,0.2));
}
.ldr-info h3 {
  font-family: var(--font-heading);
  font-size: 15px;
  color: var(--text-primary, #332F3A);
  margin: 0 0 8px 0;
}
.ldr-info p {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-muted, #635F69);
}
.ldr-info b { color: var(--accent-amber, #F59E0B); }

/* ── Scrollbar ── */
.ldr-modal::-webkit-scrollbar { width: 6px; }
.ldr-modal::-webkit-scrollbar-track { background: transparent; }
.ldr-modal::-webkit-scrollbar-thumb { background: rgba(160,150,180,0.3); border-radius: 3px; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .ldr-modal { padding: 14px; }
  .ldr-ctl-label { min-width: 140px; }
}