/**
 * ============================================================
 *  ANSV Haptic Servo Lab — Stylesheet
 *  Interactive Electromechanical Closed-Loop Simulation Sandbox
 * ============================================================
 */

.sim-sandbox-wrap {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md, 14px);
  padding: 24px;
  margin: 36px 0;
  gap: 20px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  font-family: var(--font-sans, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif);
  color: var(--text);
  min-height: 580px;
  contain: layout;
}

/* 45° ansv dynamic watermark overlay */
.sim-watermark-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 10;
  opacity: 0.07;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Ctext x='80' y='80' fill='%23ffffff' font-family='-apple-system, BlinkMacSystemFont, Roboto, sans-serif' font-weight='bold' font-size='18' text-anchor='middle' transform='rotate(-45 80 80)' letter-spacing='1.5'%3Eansv%3C/text%3E%3C/svg%3E");
  background-repeat: repeat;
}

[data-theme="light"] .sim-watermark-overlay,
html[data-theme="light"] .sim-watermark-overlay,
body.light-theme .sim-watermark-overlay,
:root:not([data-theme="dark"]) .sim-watermark-overlay {
  opacity: 0.06;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Ctext x='80' y='80' fill='%230f172a' font-family='-apple-system, BlinkMacSystemFont, Roboto, sans-serif' font-weight='bold' font-size='18' text-anchor='middle' transform='rotate(-45 80 80)' letter-spacing='1.5'%3Eansv%3C/text%3E%3C/svg%3E");
}

.sim-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
  padding-bottom: 14px;
  flex-wrap: wrap;
  gap: 12px;
}
.sim-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
}
.sim-badge {
  background: #0284c7;
  color: #ffffff;
  font-size: 0.68rem;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 4px;
  letter-spacing: 0.8px;
}
.sim-title {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text);
}
.sim-status-tag {
  font-size: 0.78rem;
  font-weight: 600;
  color: #10b981;
  background: rgba(16, 185, 129, 0.12);
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid rgba(16, 185, 129, 0.3);
}
.sim-workspace-grid {
  display: grid;
  grid-template-columns: 310px 1fr;
  gap: 20px;
}
@media (max-width: 980px) {
  .sim-workspace-grid {
    grid-template-columns: 1fr;
  }
}
.sim-controls-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.sim-panel-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm, 8px);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.sim-card-title {
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.sim-mode-selector {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.sim-mode-btn {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.sim-btn-header {
  display: flex;
  align-items: center;
  gap: 8px;
}
.mode-icon {
  font-size: 1.1rem;
}
.sim-mode-btn strong {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--text);
}
.sim-mode-btn .mode-desc {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.3;
}
.sim-mode-btn:hover {
  border-color: var(--accent);
  background: rgba(99, 102, 241, 0.06);
}
.sim-mode-btn.active {
  border-color: #0284c7;
  background: rgba(2, 132, 199, 0.12);
  box-shadow: 0 0 10px rgba(2, 132, 199, 0.25);
}
.sim-pattern-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.sim-pat-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}
.sim-pat-btn:hover {
  border-color: var(--accent);
  background: rgba(99, 102, 241, 0.08);
}
.sim-pat-btn.active {
  background: #0284c7;
  color: #ffffff;
  border-color: #0284c7;
}
.sim-switch-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 8px 10px;
  border-radius: 6px;
  transition: all 0.2s ease;
}
.sim-switch-label:hover {
  border-color: #0284c7;
}
.sim-toggle-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.sim-toggle-slider {
  position: relative;
  width: 38px;
  height: 20px;
  background-color: var(--border);
  border-radius: 20px;
  transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
}
.sim-toggle-slider::before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 3px;
  bottom: 3px;
  background-color: #ffffff;
  border-radius: 50%;
  transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
.sim-toggle-input:checked + .sim-toggle-slider {
  background-color: #0284c7;
}
.sim-toggle-input:checked + .sim-toggle-slider::before {
  transform: translateX(18px);
}
.sim-inject-btn {
  background: rgba(239, 68, 68, 0.12);
  border: 1.5px dashed rgba(239, 68, 68, 0.5);
  color: #ef4444;
  padding: 10px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}
.sim-inject-btn:hover {
  background: rgba(239, 68, 68, 0.22);
  border-color: #ef4444;
  transform: translateY(-1px);
}
.sim-slider-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.slider-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.76rem;
  color: var(--text);
}
.slider-val {
  font-family: var(--font-mono, monospace);
  font-weight: 700;
  color: #0284c7;
}
.sim-range {
  width: 100%;
  accent-color: #0284c7;
}

.sim-viewport-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.sim-viewport-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm, 8px);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.viewport-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.vp-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text);
}
.vp-metric {
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font-mono, monospace);
  color: #0284c7;
  background: rgba(2, 132, 199, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
}
.oscilloscope-legends {
  display: flex;
  gap: 12px;
  font-size: 0.72rem;
  flex-wrap: wrap;
}
.leg-item {
  display: flex;
  align-items: center;
  gap: 5px;
  color: var(--text-muted);
}
.leg-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}
.leg-dot.color-disp { background: #0284c7; box-shadow: 0 0 4px #0284c7; }
.leg-dot.color-ref { background: #7c3aed; }
.leg-dot.color-volt { background: #f97316; }
.leg-dot.color-bemf { background: #10b981; }

.canvas-box {
  width: 100%;
  border-radius: 6px;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
}
.sim-canvas {
  width: 100%;
  height: 100%;
  display: block;
}
.sim-metrics-deck {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
@media (max-width: 768px) {
  .sim-metrics-deck {
    grid-template-columns: repeat(2, 1fr);
  }
}
.metric-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.m-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
}
.m-value {
  font-size: 1.15rem;
  font-weight: 800;
  font-family: var(--font-mono, monospace);
  color: var(--text);
}
.m-value.color-accent { color: #0284c7; }
.m-value.color-success { color: #10b981; }
.m-hint {
  font-size: 0.65rem;
  color: var(--text-muted);
}
.sim-explanation-box {
  background: rgba(2, 132, 199, 0.08);
  border-left: 4px solid #0284c7;
  padding: 12px 16px;
  font-size: 0.84rem;
  line-height: 1.5;
  border-radius: 0 8px 8px 0;
  color: var(--text);
}