/* Shanghai Metro Control — control-room dark theme */

:root {
  --bg: #0a0d13;
  --panel: rgba(16, 21, 30, 0.9);
  --panel-solid: #111620;
  --edge: rgba(255, 255, 255, 0.09);
  --edge-strong: rgba(255, 255, 255, 0.16);
  --text: #e8eef7;
  --dim: #8d99ab;
  --dimmer: #5f6b7d;
  --accent: #4fc3f7;
  --good: #35d07f;
  --warn: #ffc23d;
  --bad: #ff5c5c;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --cjk: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 13px/1.45 "Inter", system-ui, -apple-system, "Segoe UI", var(--cjk);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

button { font: inherit; color: inherit; cursor: pointer; }

.app { display: flex; flex-direction: column; height: 100%; }

/* ---------- top bar ---------- */
.hud {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 54px;
  padding: 0 14px;
  background: linear-gradient(180deg, #131926, #0d121c);
  border-bottom: 1px solid var(--edge);
  flex: none;
  z-index: 5;
}

.brand { display: flex; align-items: center; gap: 9px; }
.brand-mark {
  width: 26px; height: 26px; border-radius: 6px;
  background: #e3002a; color: #fff;
  display: grid; place-items: center;
  font-weight: 800; font-size: 15px;
  box-shadow: 0 0 14px rgba(227, 0, 42, 0.45);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text b { font-size: 12.5px; letter-spacing: 0.2px; }
.brand-text i { font-style: normal; font-size: 10.5px; color: var(--dim); font-family: var(--cjk); }

.clock-block { text-align: center; min-width: 96px; }
.clock { font: 600 22px/1 var(--mono); letter-spacing: 1px; }
.phase { font-size: 10px; color: var(--dim); margin-top: 3px; white-space: nowrap; }

.speeds { display: flex; gap: 3px; }
.speeds button {
  min-width: 34px; height: 26px; padding: 0 7px;
  background: #1a2130; border: 1px solid var(--edge); border-radius: 5px;
  font: 600 11px/1 var(--mono); color: var(--dim);
}
.speeds button:hover { border-color: var(--edge-strong); color: var(--text); }
.speeds button.on { background: var(--accent); border-color: var(--accent); color: #06121a; }

.stats { display: flex; gap: 16px; margin-left: auto; }
.stat { text-align: right; min-width: 62px; }
.stat label {
  display: block; font-size: 8.5px; letter-spacing: 0.7px;
  text-transform: uppercase; color: var(--dimmer); white-space: nowrap;
}
.stat b { font: 600 15px/1.25 var(--mono); }
.stat b.good { color: var(--good); }
.stat b.warn { color: var(--warn); }
.stat b.bad { color: var(--bad); }

.hud-right { display: flex; gap: 6px; }
.ghost {
  width: 26px; height: 26px; border-radius: 50%;
  background: transparent; border: 1px solid var(--edge); color: var(--dim);
}
.ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- stage ---------- */
.stage { position: relative; flex: 1; min-height: 0; }
#map { position: absolute; inset: 0; width: 100%; height: 100%; display: block; cursor: grab; }
#map.dragging { cursor: grabbing; }

.panel {
  position: absolute;
  background: var(--panel);
  backdrop-filter: blur(9px);
  border: 1px solid var(--edge);
  border-radius: 9px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.5);
  display: flex; flex-direction: column;
  overflow: hidden;
}
/* [hidden] alone loses to .panel's display:flex */
.panel[hidden] { display: none; }

.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 10px;
  font-size: 10px; letter-spacing: 0.8px; text-transform: uppercase; color: var(--dim);
  border-bottom: 1px solid var(--edge);
  flex: none;
}
.mini {
  padding: 3px 8px; font-size: 10.5px;
  background: #1a2130; border: 1px solid var(--edge); border-radius: 5px; color: var(--dim);
}
.mini:hover { border-color: var(--edge-strong); color: var(--text); }
.mini.on { background: var(--accent); border-color: var(--accent); color: #06121a; }

/* line list */
.panel-lines { left: 12px; top: 12px; bottom: 12px; width: 270px; }
.line-list { overflow-y: auto; flex: 1; padding: 4px 0; }
.line-list::-webkit-scrollbar { width: 8px; }
.line-list::-webkit-scrollbar-thumb { background: #232c3d; border-radius: 4px; }

.line-row {
  display: grid;
  grid-template-columns: 4px 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 3px 10px 4px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.035);
  cursor: pointer;
}
.line-row:hover { background: rgba(255, 255, 255, 0.04); }
.line-row.sel { background: rgba(79, 195, 247, 0.1); }
.line-chip { width: 4px; height: 22px; border-radius: 2px; }
.line-main { min-width: 0; }
.line-name { display: flex; align-items: baseline; gap: 5px; }
.line-name b { font-size: 11.5px; }
.line-name span { font-size: 9.5px; color: var(--dimmer); font-family: var(--cjk); }
.line-name em { font-style: normal; font-size: 9px; color: var(--dimmer); margin-left: auto; }
.load-track {
  height: 4px; border-radius: 2px; background: #1b2332; margin-top: 4px; overflow: hidden;
  display: flex;
}
.load-fill { height: 100%; background: var(--good); transition: width 0.25s linear; }
.line-ctl { display: flex; align-items: center; gap: 4px; }
.line-ctl button {
  width: 18px; height: 18px; line-height: 1;
  background: #1a2130; border: 1px solid var(--edge); border-radius: 4px;
  color: var(--dim); font-size: 12px; padding: 0;
  display: grid; place-items: center;
}
.line-ctl button:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.line-ctl button:disabled { opacity: 0.3; cursor: default; }
.line-ctl .count { width: 20px; text-align: center; font: 600 12px var(--mono); }
.line-row .hdwy { font: 10px var(--mono); color: var(--dimmer); }
.line-row.alarm .hdwy { color: var(--bad); }

.fleet-bar { padding: 8px 10px; border-top: 1px solid var(--edge); flex: none; }
.fleet-track { height: 5px; background: #1b2332; border-radius: 3px; overflow: hidden; }
.fleet-fill { height: 100%; background: var(--accent); }
.fleet-label { margin-top: 5px; font: 10px var(--mono); color: var(--dim); text-align: center; }

/* inspector */
.panel-inspect { right: 12px; top: 12px; width: 290px; max-height: calc(100% - 24px); }
.inspect-body { padding: 10px; overflow-y: auto; }
.inspect-title { display: flex; align-items: center; gap: 8px; margin-bottom: 2px; }
.inspect-title b { font-size: 15px; }
.inspect-sub { color: var(--dim); font-size: 11px; font-family: var(--cjk); margin-bottom: 10px; }
.kv { display: flex; justify-content: space-between; padding: 3px 0; font-size: 11.5px; }
.kv span { color: var(--dim); }
.kv b { font-family: var(--mono); font-weight: 600; }
.pill {
  display: inline-block; padding: 1px 6px; border-radius: 9px;
  font-size: 9.5px; font-weight: 600; color: #06121a;
}
.section-label {
  margin: 12px 0 5px; font-size: 9.5px; letter-spacing: 0.7px;
  text-transform: uppercase; color: var(--dimmer);
}
.order-btns { display: grid; grid-template-columns: 1fr 1fr; gap: 5px; }
.order-btns button {
  padding: 6px 4px; font-size: 11px;
  background: #1a2130; border: 1px solid var(--edge); border-radius: 5px; color: var(--text);
}
.order-btns button:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.order-btns button:disabled { opacity: 0.35; cursor: default; }
.order-btns button.on { background: var(--warn); border-color: var(--warn); color: #1a1200; }
.dest-row { display: flex; justify-content: space-between; font-size: 11px; padding: 2px 0; color: var(--dim); }
.dest-row b { color: var(--text); font-family: var(--mono); }

/* alerts / incidents */
.alerts {
  position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%);
  display: flex; flex-direction: column-reverse; gap: 8px; align-items: center;
  width: min(560px, 60%); pointer-events: none;
}
.alert {
  pointer-events: auto;
  width: 100%;
  background: var(--panel); backdrop-filter: blur(9px);
  border: 1px solid var(--edge); border-left: 3px solid var(--warn);
  border-radius: 8px; padding: 9px 12px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.55);
  animation: rise 0.25s ease-out;
}
@keyframes rise { from { opacity: 0; transform: translateY(10px); } }
.alert.sev-high { border-left-color: var(--bad); }
.alert.sev-info { border-left-color: var(--accent); }
.alert-head { display: flex; align-items: baseline; gap: 8px; }
.alert-head b { font-size: 12.5px; }
.alert-head i { font-style: normal; font-size: 10.5px; color: var(--dim); font-family: var(--cjk); }
.alert-head .timer { margin-left: auto; font: 11px var(--mono); color: var(--warn); }
.alert p { margin: 4px 0 8px; font-size: 11.5px; color: var(--dim); }
.alert-opts { display: flex; gap: 6px; flex-wrap: wrap; }
.alert-opts button {
  flex: 1; min-width: 120px; text-align: left;
  padding: 6px 8px; font-size: 11px;
  background: #1a2130; border: 1px solid var(--edge); border-radius: 6px;
}
.alert-opts button:hover { border-color: var(--accent); }
.alert-opts button small { display: block; color: var(--dimmer); font-size: 10px; margin-top: 1px; }

.maptools { position: absolute; right: 12px; bottom: 12px; display: flex; gap: 5px; }
.hint {
  position: absolute; left: 50%; top: 14px; transform: translateX(-50%);
  background: var(--panel); border: 1px solid var(--edge); border-radius: 7px;
  padding: 6px 12px; font-size: 11.5px; color: var(--dim);
  opacity: 0; transition: opacity 0.3s; pointer-events: none;
}
.hint.show { opacity: 1; }

/* modal */
.modal {
  position: absolute; inset: 0; z-index: 20;
  background: rgba(5, 8, 13, 0.75); backdrop-filter: blur(3px);
  display: grid; place-items: center;
}
.modal[hidden] { display: none; }
.modal-card {
  width: min(620px, 90%); max-height: 84%; overflow-y: auto;
  background: var(--panel-solid); border: 1px solid var(--edge-strong);
  border-radius: 12px; padding: 22px 24px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.7);
}
.modal-card h1 { margin: 0 0 4px; font-size: 20px; }
.modal-card h2 { margin: 18px 0 8px; font-size: 13px; color: var(--accent); }
.modal-card .sub { color: var(--dim); font-size: 12px; font-family: var(--cjk); margin-bottom: 14px; }
.modal-card p, .modal-card li { font-size: 12.5px; color: #c3cdda; }
.modal-card ul { padding-left: 18px; margin: 6px 0; }
.modal-card kbd {
  background: #1d2533; border: 1px solid var(--edge); border-radius: 4px;
  padding: 0 5px; font: 11px var(--mono);
}
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 18px; }
.btn {
  padding: 8px 16px; border-radius: 6px; font-size: 12.5px; font-weight: 600;
  background: var(--accent); border: 1px solid var(--accent); color: #06121a;
}
.btn.secondary { background: transparent; color: var(--dim); border-color: var(--edge); }
.btn.secondary:hover { color: var(--text); border-color: var(--edge-strong); }

.grade-row { display: flex; align-items: center; gap: 18px; margin: 10px 0 4px; }
.grade {
  width: 66px; height: 66px; border-radius: 14px;
  display: grid; place-items: center;
  font: 800 34px var(--mono); color: #06121a; background: var(--good);
}
.score-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px 18px; flex: 1; }

/* ---------- cab view ---------- */
.cab-canvas, .cab-hud { display: none; }
body.cab-mode .cab-canvas { display: block; position: absolute; inset: 0; width: 100%; height: 100%; }
body.cab-mode .cab-hud { display: block; position: absolute; inset: 0; pointer-events: none; }
body.cab-mode #map, body.cab-mode .panel, body.cab-mode .maptools, body.cab-mode .alerts { display: none; }

.cab-hud * { pointer-events: auto; }
.cab-top {
  position: absolute; top: 12px; left: 12px; right: 12px;
  display: flex; align-items: flex-start; gap: 12px;
}
.cab-line, .cab-next {
  background: rgba(10, 14, 20, 0.74); backdrop-filter: blur(8px);
  border: 1px solid var(--edge); border-radius: 8px; padding: 7px 12px;
}
.cab-line { border-left-width: 3px; }
.cab-line b { font-size: 15px; }
.cab-line span { display: block; font-size: 10.5px; color: var(--dim); margin-top: 1px; }
.cab-next { flex: 1; max-width: 420px; }
.cab-next label {
  display: block; font-size: 8.5px; letter-spacing: 0.8px;
  text-transform: uppercase; color: var(--dimmer);
}
.cab-next b { font-size: 17px; }
.cab-next i { font-style: normal; font-size: 12px; color: var(--dim); font-family: var(--cjk); margin-left: 6px; }
.cab-next span { float: right; font: 600 15px var(--mono); color: var(--accent); }
.cab-exit {
  margin-left: auto; padding: 7px 12px; font-size: 11.5px;
  background: rgba(10, 14, 20, 0.74); border: 1px solid var(--edge);
  border-radius: 8px; color: var(--dim);
}
.cab-exit:hover { border-color: var(--accent); color: var(--accent); }

.cab-bottom {
  position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%);
  display: flex; align-items: stretch; gap: 8px;
  background: rgba(10, 14, 20, 0.78); backdrop-filter: blur(9px);
  border: 1px solid var(--edge); border-radius: 12px; padding: 10px 14px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.6);
}
.cab-bottom > div { padding: 0 12px; border-right: 1px solid rgba(255,255,255,0.07); }
.cab-bottom > div:last-child { border-right: 0; }
.cab-bottom label {
  display: block; font-size: 8.5px; letter-spacing: 0.8px;
  text-transform: uppercase; color: var(--dimmer);
}
.cab-dial { text-align: center; min-width: 96px; }
.cab-dial b { font: 700 34px/1 var(--mono); }
.cab-dial.over b { color: var(--bad); }
.cab-limit { font: 10px var(--mono); color: var(--dim); margin-top: 2px; }
.cab-notch { text-align: center; min-width: 62px; }
.cab-notch b { font: 700 22px/1.4 var(--mono); }
.cab-signal { text-align: center; min-width: 132px; }
.cab-signal .lamp {
  display: block; width: 15px; height: 15px; border-radius: 50%; margin: 2px auto 4px;
  background: #333; box-shadow: 0 0 10px rgba(0,0,0,0.6) inset;
}
.cab-signal.sig-red .lamp { background: #ff3b3b; box-shadow: 0 0 14px #ff3b3b; }
.cab-signal.sig-yellow .lamp { background: #ffc23d; box-shadow: 0 0 14px #ffc23d; }
.cab-signal.sig-green .lamp { background: #35d07f; box-shadow: 0 0 14px #35d07f; }
.cab-signal label { font-weight: 700; letter-spacing: 1px; }
.cab-signal i { font-style: normal; display: block; font-size: 9.5px; color: var(--dim); margin-top: 2px; }
.cab-doors { text-align: center; min-width: 84px; }
.cab-doors b { font: 700 15px/1.5 var(--mono); }
.cab-doors.open b { color: var(--warn); }
.cab-doors i { font-style: normal; font-size: 10px; color: var(--dim); }
.cab-stats { display: flex; gap: 14px; align-items: center; }
.cab-stats > div { text-align: center; }
.cab-stats b { font: 600 14px var(--mono); }
.cab-stats .bad b { color: var(--bad); }

.cab-msg {
  position: absolute; left: 50%; bottom: 128px; transform: translateX(-50%);
  background: rgba(10, 14, 20, 0.86); border: 1px solid var(--edge-strong);
  border-radius: 8px; padding: 8px 16px; font-size: 13px;
  animation: rise 0.2s ease-out;
}
.cab-help {
  position: absolute; left: 50%; bottom: 2px; transform: translateX(-50%);
  font: 10px var(--mono); color: var(--dimmer);
}
.ride-btn {
  width: 100%; margin: 10px 0 2px; padding: 9px;
  background: linear-gradient(180deg, #1c3c50, #152c3c);
  border: 1px solid #2e6c90; border-radius: 6px;
  font-size: 12.5px; font-weight: 600; color: #cfe9f8;
}
.ride-btn:hover { border-color: var(--accent); color: #fff; }