/* ============================================================
   智慧校园管控中心 · 数字孪生 HUD
   技术风格：深色玻璃面板 + 细线 + 等宽数字
   ============================================================ */
:root {
  --bg: #0d1117;
  --panel: rgba(16, 21, 28, 0.82);
  --panel-2: rgba(22, 28, 37, 0.9);
  --line: rgba(120, 160, 200, 0.18);
  --line-strong: rgba(120, 180, 240, 0.35);
  --txt: #e8eef6;
  --txt-2: #93a4b8;
  --txt-3: #64788e;
  --accent: #58b6ff;
  --accent-2: #46d3c4;
  --warn: #ff7a6b;
  --radius: 10px;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, "Roboto Mono", monospace;
  --sans: "Inter", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body {
  margin: 0; padding: 0; height: 100%;
  background: var(--bg);
  color: var(--txt);
  font-family: var(--sans);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

#app { position: fixed; inset: 0; }
#scene {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  display: block;
  touch-action: none;
  cursor: grab;
}
#scene:active { cursor: grabbing; }
#scene.hovering { cursor: pointer; }

#hud { position: absolute; inset: 0; pointer-events: none; }
#hud button, #hud .panel, #hud .legend, #hud .stats { pointer-events: auto; }

/* ---------------- 顶部 ---------------- */
.topbar {
  position: absolute; top: 0; left: 0; right: 0;
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  background: linear-gradient(180deg, rgba(8, 12, 17, 0.72), rgba(8, 12, 17, 0));
}

.brand { display: flex; gap: 14px; align-items: center; }

.mark {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  font: 700 15px/1 var(--mono);
  letter-spacing: 0.06em;
  color: #cfe6ff;
  background: linear-gradient(160deg, rgba(70, 160, 255, 0.28), rgba(70, 211, 196, 0.12));
  border: 1px solid rgba(110, 180, 255, 0.45);
  border-radius: 9px;
  box-shadow: inset 0 0 18px rgba(80, 170, 255, 0.16);
}
.mark span { color: var(--accent-2); }

.brand-text h1 {
  margin: 0 0 4px;
  font-size: 20px; font-weight: 650;
  letter-spacing: 0.06em;
}
.brand-text p {
  margin: 0;
  font-size: 12px;
  color: var(--txt-2);
  letter-spacing: 0.04em;
}
.brand-text em {
  font-style: normal;
  color: var(--accent);
  border: 1px solid rgba(88, 182, 255, 0.35);
  border-radius: 4px;
  padding: 1px 6px;
  margin-left: 6px;
  font-size: 11px;
}

.top-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }

.chip {
  appearance: none;
  padding: 8px 13px;
  font: 500 12px/1 var(--sans);
  letter-spacing: 0.05em;
  color: var(--txt-2);
  background: rgba(18, 24, 32, 0.72);
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: 0.18s ease;
}
.chip:hover { color: var(--txt); border-color: var(--line-strong); background: rgba(26, 34, 45, 0.85); }
.chip.active {
  color: #d9efff;
  border-color: rgba(88, 182, 255, 0.55);
  background: rgba(52, 118, 180, 0.24);
  box-shadow: 0 0 0 1px rgba(88, 182, 255, 0.12), 0 4px 18px rgba(30, 90, 150, 0.18);
}
.chip.ghost { color: var(--txt-3); }

/* ---------------- 通用面板 ---------------- */
.panel {
  position: absolute;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(14px) saturate(1.2);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.32);
  overflow: hidden;
}

.panel-head {
  display: flex; align-items: baseline; gap: 8px;
  padding: 12px 14px 10px;
  border-bottom: 1px solid var(--line);
  font-size: 12.5px; letter-spacing: 0.08em;
}
.panel-head span { font-weight: 600; color: #dbe8f5; }
.panel-head b {
  font: 500 9.5px/1 var(--mono);
  letter-spacing: 0.16em;
  color: var(--txt-3);
}
.panel-head .close {
  margin-left: auto;
  width: 22px; height: 22px;
  display: grid; place-items: center;
  background: transparent; border: 1px solid var(--line);
  border-radius: 6px; color: var(--txt-3);
  font-size: 14px; line-height: 1; cursor: pointer;
}
.panel-head .close:hover { color: var(--txt); border-color: var(--line-strong); }

.panel-foot {
  padding: 9px 14px 12px;
  font-size: 11px;
  color: var(--txt-3);
  line-height: 1.5;
  border-top: 1px solid rgba(120, 160, 200, 0.1);
}
.panel-foot .dot {
  display: inline-block; width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent-2); margin-right: 6px; vertical-align: 1px;
}

/* ---------------- 视图面板 ---------------- */
.views { left: 22px; top: 96px; width: 210px; }
.view-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; padding: 12px; }
.view-grid button {
  appearance: none;
  padding: 10px 8px;
  font: 500 12px/1.25 var(--sans);
  letter-spacing: 0.04em;
  color: var(--txt-2);
  background: rgba(255, 255, 255, 0.022);
  border: 1px solid var(--line);
  border-radius: 7px;
  cursor: pointer;
  transition: 0.16s ease;
}
.view-grid button:hover { color: #dff1ff; border-color: var(--line-strong); background: rgba(88, 182, 255, 0.08); }
.view-grid button.active {
  color: #e6f4ff;
  border-color: rgba(88, 182, 255, 0.6);
  background: rgba(58, 130, 200, 0.22);
}
.view-grid button small {
  display: block;
  margin-top: 3px;
  font: 400 9px/1 var(--mono);
  letter-spacing: 0.1em;
  color: var(--txt-3);
}

/* ---------------- 构件信息 ---------------- */
.info { right: 22px; top: 96px; width: 300px; }
.info-body { padding: 14px; }
.info-name { font-size: 17px; font-weight: 650; letter-spacing: 0.03em; }
.info-cat {
  margin-top: 5px;
  font: 500 10.5px/1 var(--mono);
  letter-spacing: 0.12em;
  color: var(--accent-2);
  text-transform: uppercase;
}
.info-note {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--txt-2);
}
.info-actions { margin-top: 14px; }
.info-actions button {
  width: 100%;
  padding: 9px;
  font: 500 12px/1 var(--sans);
  color: #d8ecff;
  background: rgba(88, 182, 255, 0.14);
  border: 1px solid rgba(88, 182, 255, 0.4);
  border-radius: 7px;
  cursor: pointer;
}
.info-actions button:hover { background: rgba(88, 182, 255, 0.22); }

/* ---------------- 问题标注 ---------------- */
/* 注意：必须带 .panel 作用域，否则会命中 3D 标注气泡的 .tag.audit */
.panel.audit { right: 22px; bottom: 84px; width: 340px; max-height: 46vh; display: flex; flex-direction: column; }
.audit-list {
  margin: 0; padding: 10px 14px 12px 14px;
  list-style: none;
  overflow: auto;
}
.audit-list li {
  display: grid; grid-template-columns: 22px 1fr; gap: 8px;
  padding: 8px 0;
  border-bottom: 1px dashed rgba(120, 160, 200, 0.12);
  font-size: 12px; line-height: 1.6;
}
.audit-list li:last-child { border-bottom: 0; }
.audit-list .no {
  width: 20px; height: 20px;
  display: grid; place-items: center;
  font: 600 10.5px/1 var(--mono);
  color: #ffd9d3;
  background: rgba(255, 122, 107, 0.16);
  border: 1px solid rgba(255, 122, 107, 0.45);
  border-radius: 5px;
}
.audit-list strong { display: block; color: #f0f6fc; font-weight: 600; font-size: 12.5px; }
.audit-list p { margin: 3px 0 0; color: var(--txt-3); font-size: 11.5px; line-height: 1.6; }

/* ---------------- 图例 ---------------- */
.legend {
  position: absolute; left: 22px; bottom: 84px;
  width: 240px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
  overflow: hidden;
}
.legend-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 11px 13px;
  font-size: 12px; letter-spacing: 0.06em;
  border-bottom: 1px solid var(--line);
  color: #dbe8f5;
}
.legend-head b { font: 500 10px/1 var(--mono); color: var(--txt-3); }
.legend ul { margin: 0; padding: 8px 8px 10px; list-style: none; }
.legend li {
  display: flex; align-items: center; gap: 8px;
  padding: 5px 6px;
  font-size: 11.5px;
  color: var(--txt-2);
  border-radius: 6px;
  cursor: pointer;
}
.legend li:hover { background: rgba(88, 182, 255, 0.08); color: var(--txt); }
.legend li i {
  width: 16px; height: 16px;
  display: grid; place-items: center;
  font: 600 9px/1 var(--mono);
  font-style: normal;
  color: #cfe6ff;
  border: 1px solid rgba(120, 180, 240, 0.5);
  border-radius: 4px;
  background: rgba(40, 90, 140, 0.35);
}

/* ---------------- 性能 ---------------- */
.stats {
  position: absolute; right: 22px; bottom: 24px;
  display: flex; gap: 18px;
  padding: 10px 14px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  font: 500 10.5px/1 var(--mono);
  color: var(--txt-3);
  letter-spacing: 0.06em;
}
.stats div { display: flex; flex-direction: column; gap: 5px; }
.stats b { font-size: 13px; color: #dff1ff; font-weight: 600; letter-spacing: 0.02em; }

/* ---------------- 提示 ---------------- */
.hint {
  position: absolute; left: 50%; bottom: 24px;
  transform: translateX(-50%);
  padding: 9px 16px;
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--txt-2);
  background: rgba(12, 17, 23, 0.66);
  border: 1px solid var(--line);
  border-radius: 999px;
  backdrop-filter: blur(8px);
  white-space: nowrap;
}

/* ---------------- 3D 标注 ---------------- */
.labels { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }

.tag {
  position: absolute;
  transform: translate(-50%, -50%);
  display: flex; align-items: center; gap: 6px;
  width: max-content; max-width: 280px;
  white-space: nowrap;
  padding: 4px 8px 4px 5px;
  font: 500 10.5px/1 var(--mono);
  letter-spacing: 0.05em;
  color: #dceaf7;
  background: rgba(12, 18, 25, 0.78);
  border: 1px solid rgba(120, 180, 240, 0.35);
  border-radius: 999px;
  opacity: 0;
  transition: opacity 0.22s ease;
  pointer-events: auto;
  cursor: pointer;
}
.tag.on { opacity: 1; }
.tag i {
  width: 15px; height: 15px;
  display: grid; place-items: center;
  font: 600 9px/1 var(--mono);
  font-style: normal;
  color: #d8ecff;
  background: rgba(70, 140, 210, 0.45);
  border-radius: 50%;
}
.tag.audit { border-color: rgba(255, 122, 107, 0.5); color: #ffe3de; }
.tag.audit i { background: rgba(255, 122, 107, 0.42); color: #fff0ec; }
.tag small {
  font: 400 9.5px/1 var(--mono);
  color: var(--txt-3);
  letter-spacing: 0.06em;
}

/* 引线（点 → 标签） */
.tag::after {
  content: "";
  position: absolute; left: -1px; bottom: -9px;
  width: 1px; height: 9px;
  background: linear-gradient(180deg, rgba(120, 180, 240, 0.55), rgba(120, 180, 240, 0));
}
.tag.audit::after { background: linear-gradient(180deg, rgba(255, 122, 107, 0.65), rgba(255, 122, 107, 0)); }

/* ---------------- 载入 ---------------- */
#loading {
  position: absolute; inset: 0;
  display: grid; place-items: center; align-content: center; gap: 18px;
  background: radial-gradient(60% 60% at 50% 45%, #131b25 0%, #0a0e13 100%);
  z-index: 20;
  transition: opacity 0.6s ease;
}
#loading.done { opacity: 0; pointer-events: none; }
#loading p { margin: 0; font-size: 12.5px; letter-spacing: 0.12em; color: var(--txt-2); }
.spinner {
  width: 34px; height: 34px;
  border: 1.5px solid rgba(120, 180, 240, 0.22);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1100px) {
  .views { width: 190px; }
  .info { width: 260px; }
  .legend { width: 210px; }
}

@media (max-width: 820px) {
  .topbar { padding: 12px 14px; flex-direction: column; gap: 10px; }
  .brand-text h1 { font-size: 16px; }
  .brand-text p { font-size: 10.5px; }
  .mark { width: 38px; height: 38px; font-size: 13px; }
  .top-actions { justify-content: flex-start; }
  .chip { padding: 7px 10px; font-size: 11px; }

  .views {
    left: 12px; right: 12px; top: auto; bottom: 12px;
    width: auto;
  }
  .views .panel-foot { display: none; }
  .view-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 5px;
    padding: 8px;
    overflow-x: auto;
  }
  .view-grid button { padding: 8px 4px; font-size: 10.5px; }
  .view-grid button small { display: none; }

  .info { left: 12px; right: 12px; top: auto; bottom: 128px; width: auto; }
  .legend, .panel.audit { display: none; }
  .hint { display: none; }
  .stats { left: 12px; right: auto; bottom: 128px; flex-wrap: wrap; gap: 10px; }
}