/* ============================================
   远程操控台 — 白色打印友好主题
   ============================================ */

:root {
  --mc-bg: #ffffff;
  --mc-surface: #f8f9fb;
  --mc-surface2: #f0f2f5;
  --mc-border: #e2e5ea;
  --mc-border-bright: #d0d5dd;
  --mc-text: #1a1d24;
  --mc-text2: #4b5563;
  --mc-text3: #9ca3af;
  --mc-accent: #2563eb;
  --mc-accent2: #3b82f6;
  --mc-green: #16a34a;
  --mc-red: #dc2626;
  --mc-orange: #d97706;
  --mc-purple: #7c3aed;
  --mc-radius: 12px;
  --mc-radius-sm: 8px;
  --mc-font: 'Noto Sans SC', system-ui, sans-serif;
  --mc-mono: 'JetBrains Mono', 'Orbitron', monospace;
  --mc-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--mc-font);
  background: var(--mc-bg);
  color: var(--mc-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ---- Top Bar ---- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 48px;
  background: var(--mc-surface);
  border-bottom: 1px solid var(--mc-border);
  flex-shrink: 0;
}

.topbar-back {
  color: var(--mc-text2);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--mc-transition);
}

.topbar-back:hover {
  color: var(--mc-accent);
}

.topbar-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  color: var(--mc-text);
}

.topbar-icon {
  font-size: 1.2rem;
}

.topbar-help {
  background: var(--mc-bg);
  border: 1px solid var(--mc-border);
  color: var(--mc-accent);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--mc-transition);
  font-family: var(--mc-font);
}

.topbar-help:hover {
  background: var(--mc-accent);
  color: #fff;
  border-color: var(--mc-accent);
}

/* ---- Main Console Layout ---- */
.console {
  display: grid;
  grid-template-columns: 1fr 340px;
  height: calc(100vh - 48px);
  gap: 0;
}

/* ---- Video Panel ---- */
.panel-video {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--mc-border);
  min-width: 0;
}

.video-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--mc-surface);
  border-bottom: 1px solid var(--mc-border);
  flex-shrink: 0;
}

.video-label {
  font-family: var(--mc-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--mc-text2);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.rec-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mc-text3);
  display: inline-block;
}

.rec-dot.live {
  background: var(--mc-red);
  animation: pulse-dot 1.5s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.video-modes {
  display: flex;
  gap: 4px;
}

.mode-btn {
  padding: 5px 14px;
  border: 1px solid var(--mc-border);
  background: var(--mc-bg);
  color: var(--mc-text2);
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--mc-transition);
  font-family: var(--mc-font);
}

.mode-btn:hover {
  border-color: var(--mc-accent);
  color: var(--mc-accent);
}

.mode-btn.active {
  background: var(--mc-accent);
  border-color: var(--mc-accent);
  color: #fff;
}

.mode-btn--demo {
  border-color: var(--mc-orange);
  color: var(--mc-orange);
}

.mode-btn--demo:hover,
.mode-btn--demo.active {
  background: var(--mc-orange);
  border-color: var(--mc-orange);
  color: #fff;
}

/* Video container */
.video-container {
  flex: 1;
  position: relative;
  background: #f0f2f5;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-container video,
.video-container img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: none;
}

.video-container video.active,
.video-container img.active {
  display: block;
}

.video-container canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 2;
}

.video-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  background: linear-gradient(135deg, #f8f9fb 0%, #eef1f5 100%);
}

.video-placeholder.hidden {
  display: none;
}

.placeholder-content {
  text-align: center;
}

.placeholder-icon {
  font-size: 3.5rem;
  margin-bottom: 16px;
  opacity: 0.5;
}

.placeholder-content p {
  color: var(--mc-text2);
  font-size: 1rem;
  font-weight: 500;
}

.placeholder-sub {
  font-size: 0.85rem !important;
  color: var(--mc-text3) !important;
  margin-top: 8px;
  line-height: 1.6;
}

/* Status bar */
.video-status {
  display: flex;
  gap: 20px;
  padding: 8px 16px;
  background: var(--mc-surface);
  border-top: 1px solid var(--mc-border);
  flex-shrink: 0;
}

.status-item {
  font-family: var(--mc-mono);
  font-size: 0.72rem;
  color: var(--mc-text3);
  display: flex;
  align-items: center;
  gap: 6px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot.off { background: var(--mc-text3); }
.status-dot.on { background: var(--mc-green); }
.status-dot.busy { background: var(--mc-orange); animation: pulse-dot 1s ease-in-out infinite; }

/* ---- Control Panel ---- */
.panel-ctrl {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  background: var(--mc-bg);
}

.panel-ctrl::-webkit-scrollbar {
  width: 4px;
}

.panel-ctrl::-webkit-scrollbar-track {
  background: transparent;
}

.panel-ctrl::-webkit-scrollbar-thumb {
  background: var(--mc-border-bright);
  border-radius: 2px;
}

.ctrl-section {
  padding: 16px;
  border-bottom: 1px solid var(--mc-border);
}

.ctrl-title {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--mc-text);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Joint sliders */
.joint-controls {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.joint-row {
  display: grid;
  grid-template-columns: 90px 1fr 44px;
  align-items: center;
  gap: 8px;
}

.joint-row label {
  font-size: 0.78rem;
  color: var(--mc-text2);
  font-weight: 500;
  white-space: nowrap;
}

.joint-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--mc-border);
  outline: none;
  cursor: pointer;
}

.joint-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--mc-accent);
  border: 2px solid var(--mc-accent2);
  cursor: pointer;
  transition: var(--mc-transition);
}

.joint-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 0 8px rgba(37, 99, 235, 0.35);
}

.joint-val {
  font-family: var(--mc-mono);
  font-size: 0.75rem;
  color: var(--mc-accent);
  text-align: right;
  font-weight: 600;
}

.ctrl-btn {
  margin-top: 12px;
  width: 100%;
  padding: 8px;
  background: var(--mc-surface);
  border: 1px solid var(--mc-border);
  color: var(--mc-text2);
  border-radius: var(--mc-radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--mc-transition);
  font-family: var(--mc-font);
}

.ctrl-btn:hover {
  background: var(--mc-border);
  color: var(--mc-text);
}

/* Gripper */
.gripper-ctrl {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.gripper-btn {
  padding: 8px 18px;
  border: 1px solid var(--mc-border);
  background: var(--mc-bg);
  color: var(--mc-text2);
  border-radius: var(--mc-radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--mc-transition);
  font-family: var(--mc-font);
}

.gripper-btn:hover {
  border-color: var(--mc-accent);
}

.gripper-btn.active {
  background: var(--mc-accent);
  border-color: var(--mc-accent);
  color: #fff;
}

.gripper-visual {
  width: 48px;
  height: 40px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.grip-jaw {
  width: 8px;
  height: 28px;
  background: var(--mc-text2);
  border-radius: 2px;
  transition: var(--mc-transition);
}

.grip-left {
  transform: translateX(-8px) rotate(-8deg);
  transform-origin: top center;
}

.grip-right {
  transform: translateX(8px) rotate(8deg);
  transform-origin: top center;
}

.gripper-visual.closed .grip-left {
  transform: translateX(-2px) rotate(-2deg);
}

.gripper-visual.closed .grip-right {
  transform: translateX(2px) rotate(2deg);
}

.gripper-status {
  text-align: center;
  margin-top: 10px;
  font-size: 0.78rem;
  color: var(--mc-text3);
}

.gripper-status span {
  color: var(--mc-green);
  font-weight: 600;
}

/* Detection results */
.detect-list {
  max-height: 220px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.detect-empty {
  text-align: center;
  padding: 24px;
  color: var(--mc-text3);
  font-size: 0.85rem;
}

.detect-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--mc-surface);
  border-radius: var(--mc-radius-sm);
  border: 1px solid var(--mc-border);
  transition: var(--mc-transition);
}

.detect-item:hover {
  border-color: var(--mc-accent);
}

.detect-color {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.detect-info {
  flex: 1;
  min-width: 0;
}

.detect-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--mc-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.detect-meta {
  font-family: var(--mc-mono);
  font-size: 0.68rem;
  color: var(--mc-text3);
}

.detect-conf {
  font-family: var(--mc-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--mc-green);
}

.detect-scene {
  margin-top: 10px;
  padding: 10px 12px;
  background: var(--mc-surface);
  border-radius: var(--mc-radius-sm);
  border: 1px solid var(--mc-border);
  font-size: 0.8rem;
  color: var(--mc-text2);
  line-height: 1.5;
  display: none;
}

.detect-scene.active {
  display: block;
}

/* ---- Tutorial ---- */
.tutorial-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
}

.tutorial-overlay.active {
  display: block;
}

.tutorial-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
}

.tutorial-card {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--mc-bg);
  border: 1px solid var(--mc-border);
  border-radius: var(--mc-radius);
  padding: 32px;
  max-width: 480px;
  width: 90%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  z-index: 1001;
}

.tutorial-step-indicator {
  display: flex;
  gap: 6px;
  margin-bottom: 20px;
}

.tutorial-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mc-border);
  transition: var(--mc-transition);
}

.tutorial-dot.active {
  background: var(--mc-accent);
  width: 24px;
  border-radius: 4px;
}

.tutorial-dot.done {
  background: var(--mc-green);
}

.tutorial-title {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--mc-text);
}

.tutorial-text {
  font-size: 0.92rem;
  color: var(--mc-text2);
  line-height: 1.7;
  margin-bottom: 24px;
}

.tutorial-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tutorial-skip {
  background: none;
  border: none;
  color: var(--mc-text3);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--mc-transition);
  font-family: var(--mc-font);
}

.tutorial-skip:hover {
  color: var(--mc-text2);
}

.tutorial-next {
  padding: 10px 24px;
  background: var(--mc-accent);
  color: #fff;
  border: none;
  border-radius: var(--mc-radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--mc-transition);
  font-family: var(--mc-font);
}

.tutorial-next:hover {
  background: var(--mc-accent2);
}

/* Highlight for tutorial spotlight */
[data-spotlight] {
  position: relative;
  z-index: 1002;
  box-shadow: 0 0 0 4px var(--mc-accent), 0 0 20px rgba(37, 99, 235, 0.2);
  border-radius: var(--mc-radius-sm);
}

/* ---- Print styles ---- */
@media print {
  body {
    background: #fff !important;
    color: #000 !important;
  }

  .topbar, .video-status {
    background: #fff !important;
    border-color: #ccc !important;
  }

  .panel-ctrl, .panel-video {
    background: #fff !important;
  }

  .video-container {
    background: #fff !important;
  }

  .ctrl-section {
    border-color: #ccc !important;
  }

  .detect-item, .detect-scene {
    background: #fff !important;
    border-color: #ccc !important;
  }
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .console {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto;
  }

  .panel-video {
    border-right: none;
    border-bottom: 1px solid var(--mc-border);
  }

  .panel-ctrl {
    max-height: 50vh;
  }
}

@media (max-width: 600px) {
  .topbar-title span:last-child {
    font-size: 0.8rem;
  }

  .video-modes {
    gap: 2px;
  }

  .mode-btn {
    padding: 4px 8px;
    font-size: 0.72rem;
  }

  .joint-row {
    grid-template-columns: 72px 1fr 36px;
  }

  .joint-row label {
    font-size: 0.7rem;
  }
}