:root{
  --bg:#f6f7f9; --surface:#fff; --ink:#15181d; --muted:#6b7280; --line:#e3e6ea;
  --accent:#1466c4; --accent-ink:#fff;
  --live:#0f9d58; --warn:#d1720b; --danger:#c62828;
  --radius:12px;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#101317; --surface:#181c22; --ink:#e8eaed; --muted:#9aa3ae; --line:#272c34;
    --accent:#5aa2f0; --accent-ink:#0b1017; --live:#46c98a; --warn:#e6a14a; --danger:#ef6a6a;
  }
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font:15px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,
    "Noto Sans Tamil","Latha","Tamil Sangam MN",sans-serif;
  padding-bottom:env(safe-area-inset-bottom)}

header{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 16px calc(14px);background:var(--surface);border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:500}
h1{margin:0;font-size:19px;letter-spacing:-.01em}
.sub{color:var(--muted);font-size:12px}
.status{display:flex;align-items:center;gap:7px;font-size:12px;color:var(--muted);
  white-space:nowrap}
.dot{width:8px;height:8px;border-radius:50%;background:var(--muted);flex:none}
.status.ok .dot{background:var(--live);box-shadow:0 0 0 3px color-mix(in srgb,var(--live) 25%,transparent)}
.status.err .dot{background:var(--danger)}

.tabs{display:flex;gap:6px;padding:10px 16px 0;background:var(--surface)}
.tab{flex:1;padding:10px;border:1px solid var(--line);border-bottom:none;
  border-radius:10px 10px 0 0;background:transparent;color:var(--muted);
  font:inherit;font-weight:600;cursor:pointer}
.tab.active{background:var(--bg);color:var(--ink);border-color:var(--line)}

main{padding:16px;max-width:760px;margin:0 auto}
h2{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);
  margin:22px 0 10px;display:flex;align-items:center;gap:8px}
.pill{background:var(--accent);color:var(--accent-ink);border-radius:20px;
  padding:1px 9px;font-size:11px;letter-spacing:0}
.pill.muted{background:var(--line);color:var(--muted)}

#map{height:320px;border-radius:var(--radius);border:1px solid var(--line);
  overflow:hidden;background:var(--surface)}

.bar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:12px;font-size:13px}
.bar label{display:flex;align-items:center;gap:6px;color:var(--muted)}
select,input[type=text],input:not([type]){font:inherit;padding:7px 9px;border-radius:8px;
  border:1px solid var(--line);background:var(--surface);color:var(--ink)}
.check input{width:16px;height:16px;accent-color:var(--accent)}
button{font:inherit;cursor:pointer}
.ghost{background:transparent;border:1px solid var(--line);color:var(--ink);
  padding:7px 12px;border-radius:8px}
.primary{width:100%;padding:15px;border:none;border-radius:var(--radius);
  background:var(--accent);color:var(--accent-ink);font-weight:700;font-size:16px}
.primary.stop{background:var(--danger)}

.bus{display:flex;gap:12px;align-items:center;background:var(--surface);
  border:1px solid var(--line);border-left:4px solid var(--muted);
  border-radius:var(--radius);padding:12px 14px;margin-bottom:8px}
.bus.approaching{border-left-color:var(--live)}
.bus.receding{border-left-color:var(--muted);opacity:.72}
.bus .grow{flex:1;min-width:0}
.bus .route{font-weight:700}
.bus .meta{font-size:12.5px;color:var(--muted);margin-top:2px}
.bus .eta{text-align:right;font-weight:700;font-size:17px;white-space:nowrap}
.bus .eta small{display:block;font-weight:500;font-size:11px;color:var(--muted)}
.bus.approaching .eta{color:var(--live)}
.bus .note{font-size:12px;color:var(--warn);margin-top:3px}

.sched{display:flex;justify-content:space-between;gap:12px;padding:10px 14px;
  background:var(--surface);border:1px solid var(--line);border-radius:10px;margin-bottom:6px}
.sched .when{font-variant-numeric:tabular-nums;font-weight:600}
.sched .in{color:var(--muted);font-size:13px;white-space:nowrap}
.sched.soon .in{color:var(--warn);font-weight:600}

.empty{background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius);
  padding:22px 18px;text-align:center;color:var(--muted);font-size:14px}
.empty strong{display:block;color:var(--ink);margin-bottom:5px;font-size:15px}

.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px;margin-bottom:16px}
.card h2{margin:0 0 8px;text-transform:none;letter-spacing:0;font-size:16px;color:var(--ink)}
.card p{margin:0;color:var(--muted);font-size:14px}
.field{display:block;margin-bottom:14px;font-size:13px;color:var(--muted);font-weight:600}
.field select,.field input{width:100%;margin-top:6px;padding:12px;font-weight:400;color:var(--ink)}
.opt{font-weight:400;opacity:.7}
.ride-status{margin-top:14px;padding:14px;border-radius:var(--radius);
  background:color-mix(in srgb,var(--live) 12%,transparent);
  border:1px solid color-mix(in srgb,var(--live) 35%,transparent);font-size:14px}
.ride-status b{color:var(--live)}
.note{color:var(--muted);font-size:12px;line-height:1.5;margin-top:14px}

.bus-icon{display:flex;align-items:center;justify-content:center;
  background:var(--accent);color:#fff;border:2px solid #fff;border-radius:50%;
  font-size:11px;font-weight:700;box-shadow:0 1px 5px rgba(0,0,0,.4)}
.me-icon{background:var(--danger);border:3px solid #fff;border-radius:50%;
  box-shadow:0 1px 5px rgba(0,0,0,.4)}


/* ---- bilingual route identity ---- */
.bus .head{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.num{background:var(--accent);color:var(--accent-ink);font-weight:800;font-size:12px;
  letter-spacing:.02em;padding:2px 8px;border-radius:6px;flex:none}
.num.small{font-size:11px;padding:1px 6px}
.dest-ta{font-size:18px;font-weight:700;line-height:1.3}
.dest-en{font-size:14px;font-weight:600;color:var(--ink);margin-top:1px}
.dest-en .via,.via-ta{font-weight:400;color:var(--muted);font-size:12.5px}
.via-ta{margin-top:1px}
.thru{font-size:10.5px;text-transform:uppercase;letter-spacing:.04em;
  color:var(--warn);border:1px solid currentColor;border-radius:5px;padding:1px 5px}
.empty .en{display:block;color:var(--muted);font-size:13px;margin-bottom:10px}
.empty p{margin:0;font-size:13.5px}
.ta{font-weight:400;opacity:.75}

.sched{align-items:flex-start}
.sched .left{display:flex;align-items:center;gap:9px;min-width:0}
.sched .names{display:flex;flex-direction:column;min-width:0}
.sched .names b{font-size:15px;line-height:1.25}
.sched .names .en{font-size:12px;color:var(--muted)}
.sched .right{text-align:right;flex:none}
.est{display:block;font-size:10px;color:var(--warn);margin-top:2px}


/* ---- current position and next stop ---- */
.stops{margin-top:9px;padding-top:9px;border-top:1px dashed var(--line);
  display:flex;flex-direction:column;gap:5px}
.stops .lbl{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.05em;
  color:var(--muted)}
.stops b{font-size:15px}
.stops .en2{color:var(--muted);font-size:12px;font-weight:400}
.stops .nxt b{color:var(--live)}
.stops .d{float:right;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.stops .rem{font-size:11.5px;color:var(--muted)}

/* ---- moving bus pins ---- */
.bus-pin{position:relative;width:38px;height:38px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:10.5px;font-weight:800;color:#fff;letter-spacing:-.02em;
  box-shadow:0 2px 8px rgba(0,0,0,.45)}
.bus-pin.live{background:var(--live);border:2px solid #fff}
.bus-pin.est{background:var(--accent);border:2px dashed #fff}
.bus-pin .arrow{position:absolute;inset:-7px;pointer-events:none}
.bus-pin .arrow::before{content:'';position:absolute;top:-3px;left:50%;
  margin-left:-5px;border-left:5px solid transparent;border-right:5px solid transparent;
  border-bottom:8px solid var(--accent);filter:drop-shadow(0 0 1px #fff)}
.bus-pin.live .arrow::before{border-bottom-color:var(--live)}

/* ---- popup ---- */
.pop{font:13px/1.4 system-ui,"Noto Sans Tamil",sans-serif}
.pop-head{margin-bottom:7px;padding-bottom:6px;border-bottom:1px solid #ddd}
.pop-head b{font-size:16px;display:inline-block;margin-right:5px}
.pop-en{color:#666;font-size:11.5px;font-weight:400}
.pop table{border-collapse:collapse;width:100%}
.pop th{text-align:left;font-weight:500;color:#777;padding:2px 10px 2px 0;
  white-space:nowrap;vertical-align:top;font-size:11.5px}
.pop td{padding:2px 0;font-weight:600}
.pop-est{margin-top:7px;padding-top:6px;border-top:1px dashed #ccc;
  color:#b26a00;font-size:11px;font-weight:600}

/* ---- disclaimer ---- */
.disclaimer{margin-top:12px;padding:11px 13px;border-radius:10px;
  background:color-mix(in srgb,var(--warn) 12%,transparent);
  border:1px solid color-mix(in srgb,var(--warn) 40%,transparent)}
.disclaimer b{display:block;font-size:13.5px;margin-bottom:3px}
.disclaimer span{font-size:12px;color:var(--muted);line-height:1.45}
.bus.estimated{border-left-color:var(--accent)}

.pop-track{margin-top:7px;padding:7px 8px;border-radius:7px;
  background:rgba(15,157,88,.12);border:1px solid rgba(15,157,88,.4);
  color:#0b7a44;font-size:11px;font-weight:600;line-height:1.35}

/* ---- coming to your stop ---- */
.arr{display:flex;gap:13px;align-items:center;background:var(--surface);
  border:1px solid var(--line);border-left:4px solid var(--muted);
  border-radius:var(--radius);padding:12px 14px;margin-bottom:8px}
.arr.soon{border-left-color:var(--warn)}
.arr .when{min-width:52px;text-align:center;font-size:23px;font-weight:800;
  line-height:1;font-variant-numeric:tabular-nums}
.arr.soon .when{color:var(--warn)}
.arr .when small{display:block;font-size:10px;font-weight:600;color:var(--muted);
  letter-spacing:.04em;margin-top:2px}
.arr .meta{font-size:12px;color:var(--muted);margin-top:3px}
.arr .meta b{color:var(--ink)}
.trackable{margin-top:4px;font-size:11px;color:var(--live);font-weight:600}
.atnow{margin-top:4px;font-size:13px}
.atnow b{font-size:14.5px}
.atnow.pending{color:var(--muted);font-size:12px}
.arr .head{display:flex;align-items:center;gap:7px;flex-wrap:wrap}


/* the bus actually heading to you */
.bus-pin.toyou{background:var(--warn);border:3px solid #fff;
  animation:pulse 1.8s ease-in-out infinite}
.bus-pin.toyou .arrow::before{border-bottom-color:var(--warn)}
@keyframes pulse{0%,100%{box-shadow:0 2px 8px rgba(0,0,0,.45),0 0 0 0 rgba(209,114,11,.55)}
  50%{box-shadow:0 2px 8px rgba(0,0,0,.45),0 0 0 12px rgba(209,114,11,0)}}
.arr.findable{cursor:pointer}
.arr.findable:active{transform:scale(.995)}
.showmap{margin-top:5px;font-size:11.5px;font-weight:600;color:var(--accent)}

/* ---- approaching / leaving tabs ---- */
.tabs{display:flex;gap:8px;margin:20px 0 12px}
.tab{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;
  padding:10px 8px;border:1px solid var(--line);border-radius:10px;
  background:var(--surface);color:var(--muted);font:inherit;cursor:pointer;
  position:relative;transition:border-color .12s,color .12s}
.tab .ta{font-size:13px;font-weight:700;line-height:1.2}
.tab .en{font-size:11px;letter-spacing:.02em}
.tab .pill{position:absolute;top:-7px;right:-4px;font-size:10px;padding:1px 7px}
.tab.active{border-color:var(--accent);color:var(--ink);
  box-shadow:inset 0 -2px 0 var(--accent)}
#panel-departing h3{font-size:12px;text-transform:uppercase;letter-spacing:.06em;
  color:var(--muted);margin:20px 0 9px;font-weight:600}
.empty p{margin:8px 0 0;font-size:12.5px}
#panel-departing h3 .cnt{text-transform:none;letter-spacing:0;font-weight:500;
  color:var(--muted);margin-left:6px}
.sched .names b{font-size:14.5px;line-height:1.3}
.sched .names .en{font-size:11.5px;line-height:1.35}
.sched .left{gap:10px}

/* ---- location picker ---- */
.picker{display:flex;align-items:center;gap:10px;margin-bottom:12px;
  background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:9px 12px}
.picker label{font-size:12px;color:var(--muted);font-weight:600;white-space:nowrap}
.picker select{flex:1;min-width:0;font-size:14px;font-weight:600;padding:8px 10px}

/* ---- already gone ---- */
.arr.gone{border-left-color:var(--muted);opacity:.85}
.arr.gone .when{color:var(--muted);font-size:19px}
.arr.gone .when small{font-size:9px}
.tabs{flex-wrap:wrap}
.tabs .tab{min-width:0;flex:1 1 30%}
.tab .en{text-align:center}
.gps-warn{margin-bottom:12px;padding:10px 13px;border-radius:10px;font-size:12.5px;
  background:color-mix(in srgb,var(--danger) 12%,transparent);
  border:1px solid color-mix(in srgb,var(--danger) 40%,transparent);line-height:1.45}
.ttfilter{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:0 0 12px;
  font-size:12.5px;color:var(--muted);cursor:pointer}
.ttfilter .hint{width:100%;font-size:11px;opacity:.8;margin-left:24px}

/* ---- readable clock ---- */
.clock{display:flex;flex-direction:column;align-items:center;line-height:1.15;
  min-width:64px;flex:none}
.clock b{font-size:17px;font-weight:800;font-variant-numeric:tabular-nums}
.clock i{font-style:normal;font-size:10.5px;font-weight:700;color:var(--muted);
  letter-spacing:.06em;margin-top:-1px}
.clock em{font-style:normal;font-size:10.5px;color:var(--warn);font-weight:600;
  margin-top:2px;white-space:nowrap}
.clock.big b{font-size:19px}
.sched .left{align-items:flex-start}

.no-service{background:color-mix(in srgb,var(--warn) 12%,transparent);
  border-color:color-mix(in srgb,var(--warn) 40%,transparent)}
.linkish{background:none;border:none;padding:0;font:inherit;font-weight:700;
  color:var(--accent);text-decoration:underline;cursor:pointer}

/* who is signed in */
.greet{display:block;font-size:12px;font-weight:600;color:var(--accent);
  margin-bottom:1px;letter-spacing:.01em}
.signout-bar{display:flex;align-items:center;gap:14px;margin:22px 0 6px;
  padding-top:16px;border-top:1px solid var(--line)}
.signout-bar .ghost{font-weight:600}
.privacy-link{color:var(--muted);font-size:12px;text-decoration:none}

.danger-link{background:none;border:none;padding:0;font:inherit;font-size:12px;
  color:var(--danger);text-decoration:underline;cursor:pointer;margin-left:auto}
.delete-box{border-color:color-mix(in srgb,var(--danger) 40%,transparent);margin-top:12px}


/* ---------- language switching ---------- */
/* Both halves are always in the HTML; only one is shown. */
body.lang-en .t-ta{display:none}
body.lang-ta .t-en{display:none}
.t-sep{display:none;color:var(--muted)}
body.lang-both .t-sep{display:inline}
.t-ta,.t-en{display:inline}

.lang-switch{display:inline-block;margin-bottom:3px;font-size:11px;padding:2px 6px;
  border-radius:6px;border:1px solid var(--line);background:var(--surface);
  color:var(--muted);max-width:140px}
.tab .t-ta,.tab .t-en{display:block}
.tab .t-sep{display:none !important}

/* language row sits below the greeting with room to breathe */
.langrow{display:flex;align-items:center;gap:7px;margin-top:8px;margin-bottom:4px}
.langlabel{font-size:10.5px;color:var(--muted);text-transform:uppercase;
  letter-spacing:.05em;white-space:nowrap}
.lang-switch{margin:0;font-size:12px;padding:3px 7px;max-width:120px}