/* Bố cục: bản đồ toàn màn hình, thanh trên nổi, bảng điều khiển trượt (đáy trên điện thoại, cạnh trái trên máy tính) */
:root{
  --bg:#eef2f7; --surface:#ffffff; --surface2:#f3f6fa; --line:#dbe2ec; --fg:#0e1726; --muted:#5b6b82;
  --volt:#14c8e6; --volt-ink:#05323b; --dc:#f59e0b; --ac:#6366f1; --ok:#10b981; --warn:#f59e0b; --bad:#ef4444;
  --shadow:0 10px 30px rgba(14,23,38,.12),0 2px 6px rgba(14,23,38,.06);
  --glass:rgba(255,255,255,.82);
  --f-ui:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --f-num:"JetBrains Mono",ui-monospace,Menlo,monospace;
  --r:16px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#070d18; --surface:#0f1828; --surface2:#162236; --line:#22314a; --fg:#e8eef8; --muted:#8a9bb4;
  --volt:#2ee6ff; --volt-ink:#03222a; --shadow:0 12px 40px rgba(0,0,0,.5); --glass:rgba(15,24,40,.82); color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#070d18; --surface:#0f1828; --surface2:#162236; --line:#22314a; --fg:#e8eef8; --muted:#8a9bb4;
  --volt:#2ee6ff; --volt-ink:#03222a; --shadow:0 12px 40px rgba(0,0,0,.5); --glass:rgba(15,24,40,.82); color-scheme:dark}

*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--fg);font:14px/1.45 var(--f-ui);overflow:hidden;-webkit-font-smoothing:antialiased}
button,input,select{font:inherit;color:inherit}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
:focus-visible{outline:2px solid var(--volt);outline-offset:2px}
[hidden]{display:none!important}

#map{position:fixed;inset:0;background:var(--bg)}
.leaflet-container{font-family:var(--f-ui);background:var(--bg)}
:root[data-theme="dark"] .leaflet-tile-pane{filter:invert(1) hue-rotate(195deg) brightness(.92) contrast(.88) saturate(.6)}
.leaflet-control-attribution{font-size:10px;background:var(--glass)!important;color:var(--muted)!important}
.leaflet-control-attribution a{color:var(--muted)!important}
.leaflet-control-zoom{border:none!important;box-shadow:var(--shadow)!important;border-radius:12px!important;overflow:hidden}
.leaflet-control-zoom a{background:var(--surface)!important;color:var(--fg)!important;border-color:var(--line)!important}

/* thanh trên */
.topbar{position:fixed;z-index:1000;top:calc(env(safe-area-inset-top,0px) + 12px);left:max(12px,env(safe-area-inset-left,0px));right:max(12px,env(safe-area-inset-right,0px));
  display:flex;gap:10px;align-items:center;pointer-events:none}
.topbar>*{pointer-events:auto}
.brand{display:flex;align-items:center;gap:8px;padding:8px 14px 8px 8px;background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-radius:14px;box-shadow:var(--shadow);text-decoration:none;color:var(--fg);font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand svg{width:30px;height:30px;stroke:none}
.brand b{color:var(--volt);margin-left:3px}
.search{position:relative;flex:1;max-width:520px;display:flex;align-items:center;gap:8px;padding:0 14px;height:46px;background:var(--glass);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-radius:14px;box-shadow:var(--shadow)}
.search svg{color:var(--muted);flex:none}
.search input{flex:1;min-width:0;border:0;background:transparent;outline:none;height:100%}
.iconbtn{width:46px;height:46px;border:0;border-radius:14px;background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow);cursor:pointer;display:grid;place-items:center;flex:none}
.iconbtn.sm{width:34px;height:34px;border-radius:10px;box-shadow:none;background:var(--surface2)}
.dropdown{position:absolute;left:0;right:0;top:calc(100% + 6px);background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);max-height:50vh;overflow:auto;z-index:20}
.dropdown button{display:flex;flex-direction:column;align-items:flex-start;width:100%;text-align:left;border:0;background:none;padding:10px 14px;cursor:pointer;border-bottom:1px solid var(--line)}
.dropdown button:last-child{border-bottom:0}
.dropdown button:hover,.dropdown button.act{background:var(--surface2)}
.dropdown small{color:var(--muted);font-size:12px}

/* nút nổi */
.fabs{position:fixed;z-index:900;right:max(14px,env(safe-area-inset-right,0px));display:flex;flex-direction:column;gap:10px;bottom:calc(46vh + 14px)}
.fab{width:48px;height:48px;border-radius:50%;border:0;background:var(--surface);color:var(--fg);box-shadow:var(--shadow);display:grid;place-items:center;cursor:pointer}
.fab:hover{color:var(--volt)}
.crosshair{position:fixed;z-index:950;left:50%;top:40%;width:34px;height:34px;margin:-17px 0 0 -17px;border:3px solid var(--volt);border-radius:50%;pointer-events:none;box-shadow:0 0 0 6px rgba(46,230,255,.18)}
.pickhint{position:fixed;z-index:1001;left:50%;transform:translateX(-50%);top:calc(env(safe-area-inset-top,0px) + 70px);background:var(--surface);box-shadow:var(--shadow);border-radius:14px;padding:10px 12px;display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:center;max-width:calc(100% - 32px)}

/* bảng điều khiển */
.panel{position:fixed;z-index:950;background:var(--surface);box-shadow:var(--shadow);display:flex;flex-direction:column;overflow:hidden}
@media (min-width:900px){
  .panel{top:calc(env(safe-area-inset-top,0px) + 70px);left:max(12px,env(safe-area-inset-left,0px));bottom:calc(env(safe-area-inset-bottom,0px) + 12px);width:410px;border-radius:20px}
  .grab{display:none}
  .fabs{bottom:calc(env(safe-area-inset-bottom,0px) + 90px)}
  .sheet{left:434px!important;right:auto!important;width:380px;bottom:calc(env(safe-area-inset-bottom,0px) + 12px)!important;border-radius:20px!important;max-height:calc(100% - 100px)!important}
}
@media (max-width:899px){
  .panel{left:0;right:0;bottom:0;height:46vh;border-radius:22px 22px 0 0;padding-bottom:env(safe-area-inset-bottom,0px);transition:height .25s ease}
  .panel.tall{height:84vh}
  .panel.mini{height:118px}
  .panel.tall~.fabs,.panel.mini~.fabs{display:none}
  .brand span{display:none}
  .brand{padding:8px}
}
.grab{display:flex;justify-content:center;padding:8px 0 2px;cursor:grab;touch-action:none}
.grab span{width:44px;height:5px;border-radius:3px;background:var(--line)}
.tabs{display:flex;gap:4px;margin:8px 14px 0;padding:4px;background:var(--surface2);border-radius:12px}
.tabs button{flex:1;border:0;background:none;padding:8px 6px;border-radius:9px;font-weight:600;color:var(--muted);cursor:pointer}
.tabs button.on{background:var(--surface);color:var(--fg);box-shadow:0 1px 4px rgba(0,0,0,.12)}
.filters{display:flex;gap:6px;overflow-x:auto;padding:12px 14px 8px;scrollbar-width:none;flex:none}
.filters::-webkit-scrollbar{display:none}
.chip{flex:none;border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:6px 12px;font-size:13px;font-weight:500;cursor:pointer;white-space:nowrap}
.chip.on{background:var(--volt);border-color:var(--volt);color:var(--volt-ink)}
.chip.sel{appearance:none;-webkit-appearance:none;padding-right:26px;background-image:linear-gradient(45deg,transparent 50%,currentColor 50%),linear-gradient(135deg,currentColor 50%,transparent 50%);background-position:calc(100% - 14px) 52%,calc(100% - 9px) 52%;background-size:5px 5px;background-repeat:no-repeat}
.tabbody{flex:1;overflow:auto;padding:0 14px 10px;min-height:0}
.summary{display:flex;gap:8px;margin:2px 0 10px;flex-wrap:wrap}
.stat{flex:1;min-width:90px;background:var(--surface2);border-radius:12px;padding:8px 10px}
.stat b{display:block;font:700 18px var(--f-num);font-variant-numeric:tabular-nums}
.stat small{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.05em}
.list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.item{display:grid;grid-template-columns:44px 1fr auto;gap:10px;align-items:center;padding:10px;border:1px solid var(--line);border-radius:14px;cursor:pointer;background:var(--surface)}
.item:hover{border-color:var(--volt)}
.item .ic{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font:700 12px var(--f-num);color:#fff}
.item .ic.dc{background:linear-gradient(135deg,#f59e0b,#ef6c00)}
.item .ic.ac{background:linear-gradient(135deg,#6366f1,#4338ca)}
.item .ic.un{background:linear-gradient(135deg,#64748b,#475569)}
.item h4{margin:0;font-size:14px;font-weight:600;line-height:1.3;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.item p{margin:2px 0 0;color:var(--muted);font-size:12px;display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.item .dist{text-align:right;font:700 15px var(--f-num);font-variant-numeric:tabular-nums;white-space:nowrap}
.item .dist small{display:block;font:500 11px var(--f-ui);color:var(--muted)}
.pill{display:inline-flex;align-items:center;gap:4px;padding:1px 8px;border-radius:999px;font-size:11px;font-weight:600;background:var(--surface2);color:var(--muted)}
.pill.ok{background:rgba(16,185,129,.15);color:var(--ok)}
.pill.warn{background:rgba(245,158,11,.16);color:var(--warn)}
.pill.bad{background:rgba(239,68,68,.15);color:var(--bad)}
.pill.dc{background:rgba(245,158,11,.16);color:#d97706}
.empty{padding:26px 10px;text-align:center;color:var(--muted)}
.source{margin:0;padding:8px 14px 10px;font-size:11px;color:var(--muted);border-top:1px solid var(--line);flex:none}

/* hành trình */
.trip{display:flex;flex-direction:column;gap:12px;padding-top:2px}
.route-inputs{position:relative;display:grid;grid-template-columns:1fr 34px;grid-template-rows:auto auto;gap:6px;align-items:center}
.route-inputs .rin:first-child{grid-column:1}
.route-inputs #swap{grid-column:2;grid-row:1/3}
.rin{position:relative;display:flex;align-items:center;gap:10px;background:var(--surface2);border-radius:12px;padding:0 12px;height:44px}
.rin input{flex:1;min-width:0;border:0;background:none;outline:none;height:100%}
.dot{width:10px;height:10px;border-radius:50%;flex:none}
.dot.a{background:var(--ok);box-shadow:0 0 0 3px rgba(16,185,129,.25)}
.dot.b{background:var(--bad);box-shadow:0 0 0 3px rgba(239,68,68,.25)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.grid2 label{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--muted);font-weight:500}
.grid2 select,.grid2 input[type=number]{height:38px;border:1px solid var(--line);border-radius:10px;background:var(--surface);padding:0 10px;color:var(--fg)}
.grid2 output{color:var(--fg);font:700 12px var(--f-num)}
input[type=range]{accent-color:var(--volt);width:100%}
.btn{border:0;border-radius:12px;padding:10px 16px;font-weight:600;cursor:pointer;background:var(--surface2);display:inline-flex;align-items:center;justify-content:center;gap:6px;text-decoration:none;color:var(--fg)}
.btn.primary{background:var(--volt);color:var(--volt-ink)}
.btn.ghost{background:transparent;border:1px solid var(--line)}
.btn.sm{padding:6px 12px;font-size:13px;border-radius:10px}
.btn.wide{width:100%;height:46px}
.btn[disabled]{opacity:.6;cursor:progress}
.tripsum{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:14px 0 10px}
.timeline{list-style:none;margin:0;padding:0 0 0 18px;position:relative}
.timeline:before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;background:linear-gradient(var(--ok),var(--volt),var(--bad))}
.timeline li{position:relative;padding:6px 0 12px 12px}
.timeline li:before{content:"";position:absolute;left:-17px;top:10px;width:12px;height:12px;border-radius:50%;background:var(--surface);border:3px solid var(--volt)}
.timeline li.end:before{border-color:var(--bad)}
.timeline li.start:before{border-color:var(--ok)}
.timeline h5{margin:0;font-size:14px}
.timeline p{margin:2px 0 0;font-size:12px;color:var(--muted)}
.timeline .stop{background:var(--surface2);border-radius:12px;padding:10px;cursor:pointer}
.batt{display:flex;align-items:center;gap:6px;font:600 12px var(--f-num)}
.batt i{display:inline-block;width:34px;height:12px;border:1.5px solid currentColor;border-radius:3px;position:relative;overflow:hidden}
.batt i:after{content:"";position:absolute;left:0;top:0;bottom:0;width:var(--p);background:currentColor;opacity:.75}
.alert{padding:10px 12px;border-radius:12px;background:rgba(239,68,68,.12);color:var(--bad);font-size:13px;margin:10px 0}
.note{padding:10px 12px;border-radius:12px;background:var(--surface2);color:var(--muted);font-size:12px;margin:10px 0}

/* thẻ chi tiết trạm */
.sheet{position:fixed;z-index:1100;left:0;right:0;bottom:0;max-height:88vh;overflow:auto;background:var(--surface);border-radius:22px 22px 0 0;box-shadow:0 -10px 40px rgba(0,0,0,.25);padding:16px max(16px,env(safe-area-inset-right,0px)) calc(env(safe-area-inset-bottom,0px) + 16px) max(16px,env(safe-area-inset-left,0px));animation:up .22s ease}
@keyframes up{from{transform:translateY(30px);opacity:.4}to{transform:none;opacity:1}}
@media (prefers-reduced-motion:reduce){.sheet{animation:none}.panel{transition:none}}
.sheet .hd{display:flex;gap:12px;align-items:flex-start}
.sheet h2{margin:0;font-size:18px;line-height:1.3;text-wrap:balance;flex:1}
.sheet .close{flex:none}
.sheet .sub{color:var(--muted);font-size:13px;margin:4px 0 12px}
.ports{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:10px 0}
.ports .stat b{font-size:22px}
.ports .stat.free b{color:var(--ok)}
.conn{display:flex;flex-direction:column;gap:6px;margin:8px 0 12px}
.conn div{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;background:var(--surface2);border-radius:10px;font-size:13px}
.conn b{font-family:var(--f-num)}
.actions{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:12px 0}
.actions .btn{flex-direction:column;font-size:12px;padding:10px 4px}
.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;font-size:13px;margin:10px 0}
.kv dt{color:var(--muted)}
.kv dd{margin:0}
.box{border:1px solid var(--line);border-radius:14px;padding:12px;margin:10px 0}
.box h3{margin:0 0 8px;font-size:14px}
.box .grid2{grid-template-columns:1fr 1fr}
.est{font:700 15px var(--f-num);margin-top:8px}
.stepper{display:flex;align-items:center;gap:8px}
.stepper button{width:34px;height:34px;border-radius:10px;border:1px solid var(--line);background:var(--surface);cursor:pointer;font-weight:700}
.stepper b{min-width:28px;text-align:center;font:700 18px var(--f-num)}
.toggles{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}

.toast{position:fixed;z-index:2000;left:50%;transform:translateX(-50%);bottom:calc(env(safe-area-inset-bottom,0px) + 24px);background:var(--fg);color:var(--bg);padding:10px 16px;border-radius:12px;font-weight:500;box-shadow:var(--shadow);max-width:calc(100% - 32px)}

/* marker */
.mk{width:30px;height:30px;border-radius:50% 50% 50% 4px;transform:rotate(-45deg);display:grid;place-items:center;box-shadow:0 3px 10px rgba(0,0,0,.35);border:2px solid #fff}
.mk span{transform:rotate(45deg);font:700 10px var(--f-num);color:#fff}
.mk.dc{background:#f59e0b}.mk.ac{background:#6366f1}.mk.un{background:#64748b}
.mk.free{box-shadow:0 0 0 4px rgba(16,185,129,.55),0 3px 10px rgba(0,0,0,.35)}
.mk.busy{box-shadow:0 0 0 4px rgba(239,68,68,.55),0 3px 10px rgba(0,0,0,.35)}
.mk.sel{border-color:var(--volt);transform:rotate(-45deg) scale(1.25)}
.cl{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:var(--volt);color:var(--volt-ink);font:700 13px var(--f-num);box-shadow:0 0 0 6px rgba(46,230,255,.25),0 4px 12px rgba(0,0,0,.3)}
.me{width:18px;height:18px;border-radius:50%;background:#3b82f6;border:3px solid #fff;box-shadow:0 0 0 8px rgba(59,130,246,.25)}
.pin{width:16px;height:16px;border-radius:50%;border:3px solid #fff;box-shadow:0 2px 6px rgba(0,0,0,.4)}
.leaflet-tooltip.lbl{background:var(--surface);color:var(--fg);border:0;box-shadow:var(--shadow);border-radius:8px;font-weight:600}
.sov{width:190px;height:52px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);text-align:center;line-height:1.2}
.sov b{font-size:12px;color:var(--fg)}.sov small{font-size:10px;color:var(--muted)}