*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans SC",sans-serif;background:#080c14;color:#e0e0e0;overflow:hidden}
#map{position:absolute;top:0;bottom:0;left:0;right:0;z-index:1}
.leaflet-container{background:#080c14!important}
/* Dim the basemap so subway lines stand out (overridden by JS for night mode) */
.leaflet-tile-pane{filter:brightness(0.85) saturate(0.7); transition: filter 0.5s ease;}

/* ═══════════════════════════════════════════
   LOADING OVERLAY
   ═══════════════════════════════════════════ */
#loadingOverlay{
  position:fixed;top:0;left:0;right:0;bottom:0;z-index:9999;
  background:rgba(8,12,20,0.97);display:flex;align-items:center;justify-content:center;
  transition:opacity 0.6s ease;
}
#loadingOverlay.hidden{opacity:0;pointer-events:none}
.loader-content{text-align:center}
.loader-spinner{
  width:40px;height:40px;margin:0 auto 16px;
  border:3px solid rgba(99,102,241,0.15);border-top-color:#6366f1;border-radius:50%;
  animation:spin 0.8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.loader-text{font-size:15px;color:#e0e0e0;font-weight:500}
.loader-sub{font-size:11px;color:#555;margin-top:4px}

/* ═══════════════════════════════════════════
   PANEL
   ═══════════════════════════════════════════ */
#panel{
  position:absolute;top:10px;left:10px;z-index:1000;
  display:flex;flex-direction:column;
  background:rgba(8,12,20,0.95);backdrop-filter:blur(24px);
  border:1px solid rgba(255,255,255,0.06);border-radius:16px;
  padding:16px 18px;width:280px;max-height:calc(100vh - 20px);overflow:hidden;
  box-shadow:0 8px 40px rgba(0,0,0,0.6);
  transition:transform 0.35s cubic-bezier(0.4,0,0.2,1),opacity 0.35s ease;
}
#panel::-webkit-scrollbar{width:4px}
#panel::-webkit-scrollbar-thumb{background:#444;border-radius:2px}
.panel-header{display:flex;align-items:center;justify-content:space-between}
#panel h1{
  font-size:17px;font-weight:700;margin-bottom:1px;flex:1;
  background:linear-gradient(135deg,#e74c3c,#f39c12,#2ecc71,#3498db,#9b59b6);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.panel-close-btn{
  display:none;background:none;border:none;color:#666;font-size:22px;
  cursor:pointer;padding:0 4px;line-height:1;transition:color .15s;
}
.panel-close-btn:hover{color:#fff}
#panel .subtitle{font-size:10px;color:#555;margin-bottom:10px}
#panel .time-display{
  font-size:32px;font-weight:200;letter-spacing:2px;
  font-variant-numeric:tabular-nums;color:#fff;
}
#panel .time-display .sec{font-size:14px;color:#555}
#panel .date-display{font-size:10px;color:#555;margin-bottom:10px}
#panel .mode-label{font-size:10px;color:#6366f1;margin-bottom:8px}

/* Mobile toggle */
#panelToggle{
  display:none;position:fixed;bottom:20px;left:50%;transform:translateX(-50%);
  z-index:1001;background:rgba(8,12,20,0.92);backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,0.1);border-radius:28px;
  padding:10px 18px;color:#e0e0e0;cursor:pointer;
  box-shadow:0 4px 20px rgba(0,0,0,0.5);
  display:none;align-items:center;gap:8px;font-size:13px;font-weight:600;
  transition:all .2s ease;
}
#panelToggle:active{transform:translateX(-50%) scale(0.96)}
#panelToggle #toggleTrainCount{
  background:rgba(251,191,36,0.2);color:#fbbf24;padding:2px 8px;
  border-radius:12px;font-size:12px;font-weight:700;
}

/* ═══════════════════════════════════════════
   SEARCH
   ═══════════════════════════════════════════ */
.search-box{position:relative;margin-bottom:8px}
.search-box input{
  width:100%;padding:7px 10px;border-radius:8px;border:1px solid rgba(255,255,255,0.08);
  background:rgba(255,255,255,0.04);color:#ddd;font-size:12px;outline:none;
  transition:border-color .2s, background .2s;
}
.search-box input:focus{
  border-color:rgba(99,102,241,0.4);background:rgba(255,255,255,0.06);
}
.search-box input::placeholder{color:#555}
.search-results{
  position:absolute;top:100%;left:0;right:0;z-index:10;
  background:rgba(8,12,20,0.97);border:1px solid rgba(255,255,255,0.08);
  border-radius:8px;margin-top:4px;max-height:200px;overflow-y:auto;
  display:none;box-shadow:0 8px 24px rgba(0,0,0,0.4);
  scrollbar-width:thin;scrollbar-color:#333 transparent;
}
.search-results.active{display:block}
.search-item{
  padding:8px 10px;cursor:pointer;font-size:12px;
  display:flex;align-items:center;gap:6px;
  transition:background .1s;border-bottom:1px solid rgba(255,255,255,0.03);
}
.search-item:last-child{border-bottom:none}
.search-item:hover{background:rgba(255,255,255,0.06)}
.search-item .si-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}
.search-item .si-name{color:#ccc;flex:1}
.search-item .si-line{font-size:10px;color:#666}

/* ═══════════════════════════════════════════
   STATS
   ═══════════════════════════════════════════ */
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:5px;margin-bottom:10px}
.stat-box{
  background:rgba(255,255,255,0.03);border-radius:10px;padding:8px 6px;
  text-align:center;border:1px solid rgba(255,255,255,0.04);
}
.stat-box .val{font-size:22px;font-weight:700;font-variant-numeric:tabular-nums}
.stat-box .lbl{font-size:8px;color:#666;text-transform:uppercase;letter-spacing:1px;margin-top:1px}
.stat-box.total .val{color:#fbbf24}

/* ═══════════════════════════════════════════
   LINE LIST (LEGEND)
   ═══════════════════════════════════════════ */
.line-filter{
  flex:1 1 auto;overflow-y:auto;overflow-x:hidden;min-height:0;
  display:flex;flex-direction:column;gap:2px;
  margin-bottom:8px;padding-right:4px;
  scrollbar-width:thin;scrollbar-color:#333 transparent;
}
.line-filter::-webkit-scrollbar{width:3px}
.line-filter::-webkit-scrollbar-thumb{background:#444;border-radius:2px}
.line-chip{
  display:flex;align-items:center;gap:6px;
  padding:3px 8px;border-radius:6px;font-size:11px;cursor:pointer;
  background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.05);
  transition:all .15s;user-select:none;
}
.line-chip:hover{background:rgba(255,255,255,0.06)}
.line-chip.off{opacity:.25}
.line-chip .cdot{width:8px;height:8px;border-radius:50%;flex-shrink:0}
.line-chip .cname{font-weight:600;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#ccc;font-size:11px}
.line-chip .cdir{font-size:9px;color:#666;white-space:nowrap;font-variant-numeric:tabular-nums}
.line-chip .cdir b{color:#999;font-weight:600}

/* ═══════════════════════════════════════════
   CONTROLS
   ═══════════════════════════════════════════ */
.controls{display:flex;gap:4px;margin-bottom:8px}
.controls button{
  flex:1;padding:5px 6px;border:1px solid rgba(255,255,255,0.08);
  background:rgba(255,255,255,0.04);color:#999;border-radius:6px;
  cursor:pointer;font-size:10px;transition:all .15s;
}
.controls button:hover{background:rgba(255,255,255,0.08);color:#fff}
.controls button.active{background:rgba(99,102,241,0.2);border-color:rgba(99,102,241,0.35);color:#fff}

.speed-ctrl{display:flex;align-items:center;gap:5px;margin-bottom:8px}
.speed-ctrl label{font-size:9px;color:#555;min-width:36px}
.speed-ctrl input[type=range]{flex:1;accent-color:#6366f1;height:2px}
.speed-ctrl .sv{font-size:9px;color:#6366f1;font-weight:600;min-width:24px;text-align:right}
#spdSelect option {background:#333;color:#eee}

/* ═══════════════════════════════════════════
   TOOLTIPS
   ═══════════════════════════════════════════ */
.tt{background:rgba(8,12,20,0.92)!important;border:1px solid rgba(255,255,255,0.1)!important;border-radius:6px!important;padding:6px 8px!important;color:#ddd!important;font-size:12px!important;line-height:1.5!important}
.tt::before{display:none!important}
.tt-dir{font-weight:600;color:#fff;font-size:13px}
.tt-no{font-family:'Courier New',monospace;font-weight:700;color:#818cf8;font-size:13px;letter-spacing:.5px}
.tt-st{color:#aaa;font-size:12px}
.tt-tm{color:#999;font-size:12px}
.tt-line{display:inline-block;padding:1px 5px;border-radius:3px;font-size:11px;margin-top:2px}

/* Station tooltip */
.st-tip{background:rgba(8,12,20,0.9)!important;border:1px solid rgba(255,255,255,0.08)!important;border-radius:6px!important;padding:4px 8px!important;color:#ddd!important;font-size:12px!important;font-weight:500!important;box-shadow:0 2px 10px rgba(0,0,0,0.4)!important}
.st-tip::before{display:none!important}
.st-tip .stn-lines{display:flex;flex-wrap:wrap;gap:2px;margin-top:2px}
.st-tip .stn-dot{width:6px;height:6px;border-radius:50%;display:inline-block}

/* ═══════════════════════════════════════════
   PERSISTENT POPUP
   ═══════════════════════════════════════════ */
.popup-card .leaflet-popup-content-wrapper{
  background:rgba(10,14,24,0.96)!important;border:1px solid rgba(255,255,255,0.1)!important;
  border-radius:12px!important;padding:0!important;color:#ddd!important;
  box-shadow:0 8px 32px rgba(0,0,0,0.6)!important;
}
.popup-card .leaflet-popup-content{
  margin:16px 18px!important;font-size:13px!important;line-height:1.6!important;min-width:220px;
}
.popup-card .leaflet-popup-tip{background:rgba(10,14,24,0.96)!important;border:none!important}
.popup-card .popup-close{
  position:absolute;top:10px;right:14px;cursor:pointer;z-index:2;
  font-size:20px;color:#666;line-height:1;
  transition:color .15s;
}
.popup-card .popup-close:hover{color:#fff}
.popup-card .popup-title{font-weight:700;font-size:15px;color:#fff;margin-bottom:6px;margin-right:24px}
.popup-card .popup-row{margin-bottom:4px;font-size:13px}
.popup-card .popup-row b{color:#ccc;font-weight:600}
.popup-card .popup-lines{display:flex;flex-wrap:wrap;gap:4px;margin-top:6px}
.popup-card .popup-line-tag{
  display:inline-flex;align-items:center;gap:4px;
  padding:2px 8px;border-radius:6px;font-size:12px;font-weight:600;
}
.popup-card .popup-addr{font-size:11px;color:#666;margin-top:6px}

/* Train popup extras */
.popup-card .train-no{
  font-family:'Courier New',monospace;font-weight:700;
  color:#818cf8;font-size:16px;letter-spacing:1px;
}

/* ═══════════════════════════════════════════
   HIGHLIGHT / DIM
   ═══════════════════════════════════════════ */
.line-dimmed{opacity:.15!important;transition:opacity .3s}
.line-dimmed .st-dot,.line-dimmed .st-transfer-icon{opacity:.15!important}
.line-dimmed .train-marker{opacity:.15!important}
.line-chip.highlighted{background:rgba(255,255,255,0.08)!important;border-color:rgba(255,255,255,0.15)!important}

/* ═══════════════════════════════════════════
   STATION MARKERS
   ═══════════════════════════════════════════ */
.station-marker{background:none!important;border:none!important}
/* Regular station: white circle with line-color border (Beijing subway standard) */
.st-dot{
  width:15px;height:15px;border-radius:50%;
  background:#fff;border:2.5px solid var(--lc,#888);
  box-shadow:0 1px 3px rgba(0,0,0,0.4);
  transform:scale(var(--station-scale,0.53));
  transition:transform .25s ease;
}
.st-label{
  font-size:8px;color:#bbb;white-space:nowrap;
  text-shadow:0 0 3px #000,0 0 6px #000,0 1px 2px #000;
  font-weight:500;pointer-events:none;
}
.st-label.terminal{font-weight:700;color:#fff;font-size:9px}

.train-marker{background:none!important;border:none!important;}
/* Train fade in/out for smoother appearance */
.train-marker .leaflet-marker-icon{
  opacity:0;
  animation:trainFadeIn 0.5s ease forwards;
}
@keyframes trainFadeIn{
  from{opacity:0;transform:scale(0.5)}
  to{opacity:1;transform:scale(1)}
}

/* Station icon zoom-dependent scaling — all station markers use --station-scale */
.line-layer-hidden .st-dot{opacity:.15!important}
.line-layer-hidden .st-transfer-icon{opacity:.15!important}
/* Highlight mode: dim stations not on selected line */
.station-dimmed .st-dot{opacity:.12!important}
.station-dimmed .st-transfer-icon{opacity:.12!important}
.st-transfer-icon{
  width:15px;height:15px;
  transform:scale(var(--station-scale,0.53));
  transition:transform .25s ease;
}

/* Permanent station labels */
.st-perm-label{
  background:none!important;border:none!important;box-shadow:none!important;
  font-size:10px!important;color:#ccc!important;font-weight:500!important;
  white-space:nowrap!important;
  text-shadow:0 0 4px #000,0 0 8px #000,0 1px 3px rgba(0,0,0,0.8)!important;
  padding:0!important;
}
.st-perm-label::before{display:none!important}

/* ═══════════════════════════════════════════
   RESPONSIVE: MOBILE
   ═══════════════════════════════════════════ */
@media(max-width:768px){
  #panelToggle{display:flex!important}
  
  #panel{
    position:fixed;top:auto;bottom:0;left:0;right:0;
    width:100%;max-width:100%;max-height:70vh;
    border-radius:20px 20px 0 0;
    padding:16px 18px 24px;
    transform:translateY(100%);opacity:0;
    pointer-events:none;
    /* Safe area for notch phones */
    padding-bottom:calc(24px + env(safe-area-inset-bottom));
  }
  #panel.open{
    transform:translateY(0);opacity:1;pointer-events:auto;
  }
  .panel-close-btn{display:block!important}
  
  #panel h1{font-size:15px}
  #panel .time-display{font-size:26px}
  .stat-box .val{font-size:18px}
  
  .line-filter{max-height:28vh}
  
  .controls button{padding:8px 6px;font-size:11px}
  .speed-ctrl input[type=range]{height:4px}
}

@media(min-width:769px){
  #panelToggle{display:none!important}
}