:root{--ink:#080b12;--muted:#667085;--line:#dfe3ea;--surface:#fff;--bg:#f3f6fb;--blue:#1677ff;--blue-dark:#075ecb;--red:#e5484d;--shadow:0 10px 30px rgba(8,11,18,.08)}
*{box-sizing:border-box}
html{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg)}
body{margin:0;min-height:100vh;overflow-x:hidden;padding:env(safe-area-inset-top) 0 env(safe-area-inset-bottom)}
button,input{font:inherit}
.topbar{width:100%;max-width:520px;margin:auto;padding:24px 20px 16px;display:flex;align-items:center;justify-content:space-between}
h1,h2,p{margin:0}h1{font-size:28px;letter-spacing:-.04em}h2{font-size:22px;letter-spacing:-.025em}
.eyebrow,.section-label{font-size:11px;font-weight:800;letter-spacing:.13em;color:var(--muted)}
.status-dot{width:10px;height:10px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 5px rgba(22,119,255,.13)}
.status-dot.offline{background:var(--red);box-shadow:0 0 0 5px rgba(239,68,68,.12)}
main{width:100%;max-width:520px;margin:auto;padding:0 20px 60px;display:grid;gap:30px}
main>*{min-width:0}
.card{width:100%;min-width:0;background:var(--surface);border:1px solid rgba(229,231,235,.8);border-radius:22px;padding:22px 20px;box-shadow:var(--shadow)}
.hero h2{font-size:30px;margin:7px 0 25px}
label{display:block;font-size:13px;font-weight:700;margin-bottom:8px}
.input-wrap{width:100%;min-width:0;height:60px;border:1.5px solid var(--line);border-radius:14px;display:flex;align-items:center;padding:0 16px;margin-bottom:14px;background:#fafafa;transition:.2s}
.input-wrap:focus-within{border-color:var(--ink);background:#fff;box-shadow:0 0 0 3px rgba(17,24,39,.07)}
.input-wrap input{min-width:0;flex:1;border:0;outline:0;background:transparent;font-size:25px;font-weight:750;color:var(--ink)}
.input-wrap span{color:var(--muted);font-weight:700}
button{width:100%;height:56px;border:0;border-radius:14px;color:#fff;font-weight:800;cursor:pointer;transition:transform .1s,opacity .2s}
button:active{transform:scale(.985)}button:disabled{opacity:.55;cursor:wait}.primary{background:var(--blue);box-shadow:0 8px 18px rgba(22,119,255,.22)}.primary:hover{background:var(--blue-dark)}.danger{background:var(--red)}
.hidden{display:none!important}.error{margin-top:14px;color:#b91c1c;font-size:13px;font-weight:650}
.live{color:var(--blue-dark);font-size:11px;font-weight:850;letter-spacing:.1em}.live span{display:inline-block;width:8px;height:8px;background:var(--blue);border-radius:50%;margin-right:5px;animation:pulse 1.7s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 7px rgba(22,119,255,0)}}
.timer{font-variant-numeric:tabular-nums;font-size:46px;font-weight:800;letter-spacing:-.05em;margin:12px 0 4px}.session-meta{font-size:13px;color:var(--muted);margin-bottom:25px}.session-meta strong{color:var(--ink)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:12px;margin:0 4px 14px}.section-head h2{margin-top:5px}.section-head>span{flex:0 0 auto;font-size:12px;color:var(--muted);font-weight:650}
.summary-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.metric{background:var(--surface);border:1px solid var(--line);border-radius:17px;padding:16px 13px;min-width:0}.metric span{display:block;color:var(--muted);font-size:11px;font-weight:700;margin-bottom:8px}.metric strong{font-size:21px;letter-spacing:-.04em}.metric small{color:var(--muted);font-weight:700;margin-left:2px}
.day-group{margin-bottom:23px}.day-header{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:0 4px 9px}.day-header h3{font-size:14px;margin:0}.day-header span{text-align:right;font-size:12px;color:var(--muted);font-weight:650}
.session-row{background:var(--surface);border:1px solid var(--line);border-bottom:0;padding:15px 16px;display:grid;grid-template-columns:1fr auto;gap:6px}.session-row:first-of-type{border-radius:15px 15px 0 0}.session-row:last-child{border-bottom:1px solid var(--line);border-radius:0 0 15px 15px}.session-row:only-of-type{border-radius:15px;border-bottom:1px solid var(--line)}
.session-row strong{font-size:14px}.session-row .km{grid-row:1/3;grid-column:2;text-align:right;font-size:17px}.session-row .km small{display:block;color:var(--muted);font-size:10px}.session-detail{font-size:12px;color:var(--muted)}.empty{text-align:center;background:var(--surface);border:1px dashed #d1d5db;border-radius:17px;padding:30px;color:var(--muted);font-size:14px}
.toast{position:fixed;z-index:5;left:50%;bottom:calc(22px + env(safe-area-inset-bottom));transform:translate(-50%,20px);background:var(--ink);color:#fff;padding:12px 17px;border-radius:12px;font-size:13px;font-weight:700;opacity:0;pointer-events:none;transition:.25s;white-space:nowrap;max-width:calc(100vw - 32px)}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:520px){.summary-grid{grid-template-columns:1fr 1fr}.metric:first-child{grid-column:1/3}.timer{font-size:40px}.hero h2{font-size:27px}}
@media(max-width:350px){main{padding-left:14px;padding-right:14px}.topbar{padding-left:16px;padding-right:16px}.card{padding:20px 16px}.day-header{align-items:flex-start;flex-direction:column}.day-header span{text-align:left}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}