/* ===== 数字孪生指挥中心风格 - 图观引擎 ===== */
:root {
  --bg-deep: #080c14;
  --bg-panel: rgba(13, 21, 37, 0.92);
  --bg-card: rgba(18, 28, 48, 0.85);
  --accent: #0080ff;
  --accent-cyan: #00d4ff;
  --accent-green: #00e676;
  --accent-yellow: #ffab00;
  --accent-red: #ff3d3d;
  --accent-orange: #ff6d00;
  --border-panel: rgba(0, 128, 255, 0.25);
  --border-card: rgba(0, 128, 255, 0.15);
  --text-primary: #e0e6f0;
  --text-secondary: #8899b4;
  --text-muted: #556680;
  --radius: 2px;
  --glow: 0 0 10px rgba(0, 128, 255, 0.15);
  --transition: 0.25s ease;
}

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

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
  user-select: none;
}

/* ===== Three.js 画布 + 背景网格 ===== */
#canvas-container {
  position: fixed;
  inset: 0;
  z-index: 1;
}
#canvas-container canvas { display: block; }

/* 背景网格叠加 */
#canvas-container::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 128, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 128, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* ===== 顶部标题栏 ===== */
#top-bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 48px;
  background: linear-gradient(180deg, rgba(8, 14, 24, 0.98) 0%, rgba(13, 21, 37, 0.9) 100%);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-panel);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 100;
}
.top-left { display: flex; align-items: center; gap: 12px; }
.logo { font-size: 22px; }
.title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.subtitle {
  font-size: 11px;
  color: var(--text-secondary);
  background: rgba(0, 128, 255, 0.1);
  padding: 3px 12px;
  border-radius: 2px;
  border: 1px solid rgba(0, 128, 255, 0.2);
  letter-spacing: 1px;
}
.top-right {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--text-secondary);
}
.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  display: inline-block;
}
.status-dot.online {
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
}
.status-dot.offline { background: var(--text-muted); }
#clock { font-variant-numeric: tabular-nums; letter-spacing: 1px; }

/* ===== 通用面板样式 ===== */
.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-panel);
  position: relative;
  box-shadow: var(--glow);
}

/* 四角 L 形装饰 */
.panel::before,
.panel::after {
  content: '';
  position: absolute;
  width: 12px; height: 12px;
  pointer-events: none;
  z-index: 1;
}
.panel::before {
  top: -1px; left: -1px;
  border-top: 2px solid var(--accent-cyan);
  border-left: 2px solid var(--accent-cyan);
}
.panel::after {
  bottom: -1px; right: -1px;
  border-bottom: 2px solid var(--accent-cyan);
  border-right: 2px solid var(--accent-cyan);
}

/* 面板标题 */
.panel-title {
  font-size: 14px;
  font-weight: 600;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-card);
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  letter-spacing: 1px;
}
.panel-title::before {
  content: '';
  width: 3px; height: 14px;
  background: linear-gradient(180deg, var(--accent-cyan), var(--accent));
  border-radius: 2px;
  flex-shrink: 0;
}

/* ===== 左侧传感器面板 ===== */
#sensor-panel {
  position: fixed;
  left: 14px;
  top: 62px;
  width: 230px;
  z-index: 90;
}
#sensor-panel .panel-body { padding: 8px 10px 10px; }

.sensor-card {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 8px;
  margin-bottom: 5px;
  background: var(--bg-card);
  border: 1px solid transparent;
  border-left: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}
.sensor-card:hover {
  background: rgba(0, 128, 255, 0.08);
  border-color: var(--border-card);
  border-left-color: var(--accent);
}
.sensor-card.selected {
  border-color: var(--border-panel);
  border-left-color: var(--accent-cyan);
  background: rgba(0, 128, 255, 0.1);
  box-shadow: inset 0 0 20px rgba(0, 128, 255, 0.05);
}
.sensor-icon { font-size: 18px; flex-shrink: 0; width: 22px; text-align: center; }
.sensor-info { flex: 1; min-width: 0; }
.sensor-label {
  font-size: 11px;
  color: var(--text-muted);
  display: block;
  letter-spacing: 1px;
}
.sensor-value {
  font-size: 20px;
  font-weight: 700;
  display: block;
  margin: 1px 0;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
  font-family: 'SF Mono', 'Consolas', 'Menlo', monospace;
}
.sensor-bar {
  height: 2px;
  background: rgba(255,255,255,0.06);
  margin-top: 3px;
  overflow: hidden;
}
.sensor-fill {
  height: 100%;
  transition: width 0.6s ease;
  box-shadow: 0 0 6px currentColor;
}
.temp-fill { background: linear-gradient(90deg, var(--accent), var(--accent-red)); }
.humidity-fill { background: linear-gradient(90deg, var(--accent-cyan), var(--accent)); }
.light-fill { background: linear-gradient(90deg, var(--accent-orange), var(--accent-yellow)); }
.co2-fill { background: linear-gradient(90deg, #7c4dff, var(--accent-cyan)); }
.ph-fill { background: linear-gradient(90deg, var(--accent-red), var(--accent-green)); }

/* 面板底部装饰线 */
#sensor-panel::after { bottom: -1px; right: -1px; }
#sensor-panel .decor-tr,
#sensor-panel .decor-bl {
  display: none !important;
}

/* ===== 右侧控制面板 ===== */
#control-panel {
  position: fixed;
  right: 14px;
  top: 62px;
  width: 250px;
  z-index: 90;
}
#control-panel .panel-body { padding: 8px 10px 10px; }

.control-section {
  margin-bottom: 8px;
  padding: 8px 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  position: relative;
}
.control-section:hover { border-color: var(--border-panel); }
.ctrl-label {
  font-size: 12px;
  font-weight: 600;
  display: block;
  margin-bottom: 6px;
  color: var(--text-secondary);
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.ctrl-slider {
  width: 100%;
  height: 3px;
  -webkit-appearance: none;
  appearance: none;
  background: rgba(255,255,255,0.08);
  border-radius: 3px;
  outline: none;
  margin: 6px 0;
}
.ctrl-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  border-radius: 2px;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg-deep);
  box-shadow: 0 0 10px rgba(0, 128, 255, 0.5);
}

.ctrl-buttons {
  display: flex;
  gap: 5px;
}
.ctrl-btn {
  flex: 1;
  padding: 5px 6px;
  border: 1px solid rgba(0, 128, 255, 0.2);
  background: rgba(0, 128, 255, 0.06);
  color: var(--text-primary);
  border-radius: 2px;
  font-size: 11px;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.5px;
}
.ctrl-btn:hover {
  background: rgba(0, 128, 255, 0.15);
  border-color: var(--accent);
  box-shadow: 0 0 8px rgba(0, 128, 255, 0.2);
}
.ctrl-btn.active-btn {
  background: rgba(0, 230, 118, 0.15);
  color: var(--accent-green);
  border-color: var(--accent-green);
}
.ctrl-btn.auto {
  background: rgba(0, 128, 255, 0.15);
  color: var(--accent-cyan);
  border-color: var(--accent);
}

.ctrl-intensity {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 6px;
}
.ctrl-intensity .ctrl-slider { flex: 1; margin: 0; }
#val-intensity {
  font-weight: 700;
  color: var(--accent-cyan);
  min-width: 16px;
  text-align: center;
}

.selected-item {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-yellow);
}

/* ===== 底部面板 ===== */
#bottom-panel {
  position: fixed;
  bottom: 14px;
  left: 14px;
  right: 14px;
  height: 170px;
  display: flex;
  gap: 10px;
  z-index: 90;
}

.bottom-section {
  flex: 1;
  background: var(--bg-panel);
  border: 1px solid var(--border-panel);
  position: relative;
  box-shadow: var(--glow);
}
.bottom-section::before {
  content: '';
  position: absolute;
  top: -1px; left: -1px;
  width: 10px; height: 10px;
  border-top: 2px solid var(--accent-cyan);
  border-left: 2px solid var(--accent-cyan);
  pointer-events: none;
  z-index: 1;
}
.bottom-section::after {
  content: '';
  position: absolute;
  bottom: -1px; right: -1px;
  width: 10px; height: 10px;
  border-bottom: 2px solid var(--accent-cyan);
  border-right: 2px solid var(--accent-cyan);
  pointer-events: none;
  z-index: 1;
}

.bottom-section h3 {
  font-size: 13px;
  font-weight: 600;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border-card);
  display: flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 1px;
}
.bottom-section h3::before {
  content: '';
  width: 3px; height: 12px;
  background: linear-gradient(180deg, var(--accent-cyan), var(--accent));
  border-radius: 2px;
  flex-shrink: 0;
}

/* 摄像头区域 */
.camera-placeholder {
  width: calc(100% - 20px);
  height: calc(100% - 40px);
  margin: 8px 10px;
  background: var(--bg-card);
  border: 1px dashed var(--border-card);
  display: flex;
  align-items: center;
  justify-content: center;
}
.camera-overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--text-muted);
}
.camera-icon { font-size: 28px; opacity: 0.5; }
.camera-hint { font-size: 10px; opacity: 0.4; }

/* AI 检测区域 */
.ai-section {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 6px 10px;
}
.ai-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  font-size: 11px;
  border-left: 2px solid var(--accent);
}
.ai-label { color: var(--text-muted); min-width: 65px; letter-spacing: 1px; }
.ai-result { font-weight: 600; color: var(--text-primary); }
.ai-confidence {
  font-size: 10px;
  color: var(--accent-cyan);
  margin-left: auto;
}
.ai-status-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: auto;
  padding: 5px 8px;
}

/* ===== 工具提示 ===== */
#tooltip {
  position: fixed;
  pointer-events: none;
  background: rgba(13, 21, 37, 0.95);
  color: var(--text-primary);
  padding: 5px 10px;
  font-size: 11px;
  border: 1px solid var(--border-panel);
  z-index: 200;
  transition: opacity 0.15s ease;
  white-space: nowrap;
  letter-spacing: 1px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.5);
}
#tooltip.hidden { opacity: 0; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  #sensor-panel { width: 170px; }
  #control-panel { width: 200px; }
  #bottom-panel { height: 140px; }
}