/* ═══ 运动视差 · hub 风格 ═══ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --gold: #e8b84b;
  --gold-dim: rgba(232, 184, 75, 0.14);
  --sky: #7dd3fc;
  --green: #6ee7b7;
  --violet: #c4b5fd;
  --cream: #fff1c4;
  --ink: #e8ecf4;
  --ink-dim: #97a3b8;
  --panel: rgba(8, 12, 24, 0.82);
  --line: rgba(255, 255, 255, 0.09);
}

html, body { height: 100%; overflow: hidden; }
body {
  background: #050811;
  color: var(--ink);
  font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
  user-select: none;
}

#gl, #topo { position: fixed; inset: 0; width: 100vw; height: 100vh; display: block; }
#topo { display: none; }
body[data-view="topo"] #gl { display: none; }
body[data-view="topo"] #topo { display: block; }

#labelLayer { position: fixed; inset: 0; pointer-events: none; z-index: 5; }
.mp-label {
  position: absolute; transform: translate(-50%, -100%);
  padding: 3px 9px 4px; border-radius: 999px;
  background: rgba(6, 10, 20, 0.72); border: 1px solid var(--line);
  font-size: 12.5px; white-space: nowrap; line-height: 1.35;
  backdrop-filter: blur(3px);
}
.mp-label .nm { font-weight: 600; }
.mp-label .om { color: var(--ink-dim); font-variant-numeric: tabular-nums; }
.mp-label.peaked { border-color: var(--gold); box-shadow: 0 0 14px rgba(232,184,75,.35); }

/* ── 顶栏 ── */
#topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 20;
  display: flex; align-items: center; gap: 18px;
  padding: 10px 18px;
  background: linear-gradient(rgba(5, 8, 17, 0.9), rgba(5, 8, 17, 0.55) 80%, transparent);
}
#topbar .title { font-weight: 800; font-size: 17px; letter-spacing: .02em; color: #f5f0e2; }
#topbar .title small { color: var(--ink-dim); font-weight: 400; margin-left: 8px; font-size: 12px; }
#tabs { display: flex; gap: 8px; }
.tab {
  appearance: none; border: 1px solid var(--line); border-radius: 999px;
  background: rgba(10, 14, 26, 0.6); color: var(--ink-dim);
  font: inherit; font-size: 13.5px; padding: 7px 16px; cursor: pointer;
  transition: all .18s;
}
.tab:hover { color: var(--ink); border-color: rgba(255,255,255,.22); }
.tab.active {
  color: #1c1607; background: var(--gold); border-color: var(--gold);
  font-weight: 700;
}

/* ── 语言切换 ── */
.lang-switch {
  display: inline-flex; align-items: center; gap: 3px;
  background: rgba(10, 14, 26, 0.6); border: 1px solid var(--line);
  border-radius: 999px; padding: 2px 6px; margin-left: auto;
}
.lang-btn {
  background: transparent; border: none; color: var(--ink-dim);
  font: inherit; font-size: 12px; padding: 3px 7px; border-radius: 999px;
  cursor: pointer; transition: all .15s;
}
.lang-btn:hover { color: var(--ink); }
.lang-btn.active { color: #1c1607; background: var(--gold); font-weight: 700; }
.lang-sep { color: var(--ink-dim); opacity: 0.4; font-size: 11px; }

/* ── 右侧面板 ── */
#sidePanel {
  position: fixed; top: 62px; right: 14px; z-index: 15;
  width: 308px; max-height: calc(100vh - 148px);
  overflow-y: auto; overscroll-behavior: contain;
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 14px 15px; backdrop-filter: blur(8px);
  scrollbar-width: thin;
}
body[data-view="topo"] #sidePanel { top: 62px; }

#sidePanel h2 { font-size: 14.5px; margin-bottom: 8px; color: #f5f0e2; }
#sidePanel h2 small { color: var(--ink-dim); font-weight: 400; margin-left: 6px; font-size: 11.5px; }
#sidePanel p.note { font-size: 12px; color: var(--ink-dim); line-height: 1.55; margin: 7px 0; }
#sidePanel .formula {
  font-family: 'Cambria Math', Georgia, serif; font-size: 15.5px;
  background: var(--gold-dim); border: 1px solid rgba(232,184,75,.25);
  color: #ffe9ae; border-radius: 9px; padding: 8px 12px; margin: 8px 0;
  text-align: center;
}

/* HUD 行 */
.hudrow {
  display: grid; grid-template-columns: 14px 1fr auto; gap: 4px 8px;
  align-items: center; padding: 7px 8px; border-radius: 9px;
  margin: 5px 0; background: rgba(255,255,255,0.03);
}
.hudrow.peaked { background: var(--gold-dim); outline: 1px solid rgba(232,184,75,.4); }
.hudrow .dot { width: 10px; height: 10px; border-radius: 50%; }
.hudrow .nm { font-size: 13px; font-weight: 600; }
.hudrow .nm small { color: var(--ink-dim); font-weight: 400; margin-left: 5px; }
.hudrow .om { font-size: 13px; font-variant-numeric: tabular-nums; text-align: right; }
.hudrow .om b { font-size: 15px; }
.hudrow .bar { grid-column: 1 / -1; height: 4px; border-radius: 4px; background: rgba(255,255,255,.07); }
.hudrow .bar i { display: block; height: 100%; border-radius: 4px; transition: width .12s linear; }

/* 事实卡 */
.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 10px; }
.fact {
  background: rgba(255,255,255,.035); border: 1px solid var(--line);
  border-radius: 10px; padding: 9px 10px;
}
.fact .fi { font-size: 17px; }
.fact .ft { font-size: 12.5px; font-weight: 700; margin: 3px 0 2px; }
.fact .fd { font-size: 11.5px; color: var(--ink-dim); line-height: 1.5; }

/* ── 底部控制条 ── */
#bottomBar {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 20;
  display: flex; align-items: center; justify-content: center; gap: 14px;
  padding: 12px 18px 16px;
  background: linear-gradient(transparent, rgba(5, 8, 17, 0.72) 30%, rgba(5,8,17,.9));
  flex-wrap: wrap;
}
.ctl {
  display: flex; align-items: center; gap: 9px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 999px;
  padding: 7px 14px; font-size: 13px;
}
.ctl label { color: var(--ink-dim); white-space: nowrap; }
.ctl output { min-width: 108px; font-variant-numeric: tabular-nums; color: #ffe9ae; }
input[type="range"] {
  appearance: none; width: 150px; height: 4px; border-radius: 4px;
  background: rgba(255,255,255,.16); outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  appearance: none; width: 16px; height: 16px; border-radius: 50%;
  background: var(--gold); border: 2px solid #1c1607; cursor: pointer;
  box-shadow: 0 0 8px rgba(232,184,75,.5);
}
.btn {
  appearance: none; font: inherit; font-size: 13px; cursor: pointer;
  color: var(--ink); background: var(--panel);
  border: 1px solid var(--line); border-radius: 999px; padding: 8px 15px;
  transition: all .15s; white-space: nowrap;
}
.btn:hover { border-color: rgba(255,255,255,.3); }
.btn.on { color: #1c1607; background: var(--gold); border-color: var(--gold); font-weight: 700; }

/* ── 每视图面板容器：切页切换 ── */
#sidePanel > .viewpanel { display: none; }
#sidePanel > .viewpanel.active { display: block; }
#bottomBar > .viewbar { display: none; }
#bottomBar > .viewbar.active {
  display: flex; gap: 14px; align-items: center;
  justify-content: center; flex-wrap: wrap; width: 100%;
}

/* ── topo 布局 ── */
#topoWrap { position: fixed; inset: 0; display: none; flex-direction: column; }
body[data-view="topo"] #topoWrap { display: flex; }
@media (max-width: 860px) {
  #sidePanel { width: 250px; font-size: 12px; }
  #topbar .title small { display: none; }
}