:root {
  --bg: #161920;
  --panel: #20242e;
  --panel-2: #2a2e38;
  --line: rgba(255,255,255,0.08);
  --text: #e8eaf0;
  --muted: #9aa1b1;
  --accent: #f39c12;
  --blue: #3498db;
  --green: #2ecc71;
  --red: #e74c3c;
  --purple: #b57edc;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0 auto;
  padding: 20px 24px 40px;
  max-width: 1760px;
  font-size: 14px;
  line-height: 1.45;
}

h1 { margin: 0 0 4px; font-size: 28px; }
h1 small { font-size: 15px; color: var(--muted); font-weight: 400; margin-left: 8px; }
h2.section-title { font-size: 18px; margin: 28px 0 12px; }
h3 { margin: 0 0 4px; font-size: 15px; }
h4 { margin: 12px 0 6px; font-size: 12.5px; color: var(--muted); font-weight: 600; }
h4 small { font-weight: 400; }
code { background: rgba(255,255,255,0.08); padding: 1px 5px; border-radius: 4px; font-size: 12px; }
kbd { background: var(--panel-2); border: 1px solid var(--line); border-radius: 4px; padding: 0 5px; font-size: 12px; }
b.blue { color: var(--blue); } b.red, .red { color: var(--red); }
.purple-t { color: var(--purple); } .green-t { color: var(--green); } .warn-t { color: #f1c40f; }

.top .subtitle { color: var(--muted); max-width: 980px; margin: 0 0 16px; }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  min-width: 0;
}
.explain { color: var(--muted); font-size: 12.5px; margin: 0 0 10px; }
.explain.big { font-size: 13.5px; margin-bottom: 14px; }
.now { color: var(--muted); font-size: 12.5px; margin: 8px 0 0; min-height: 1.4em; }
.now b { color: var(--text); }
.muted { color: var(--muted); }
.mono { font-family: ui-monospace, Consolas, monospace; font-size: 12.5px; }

/* ---------- Controlli ---------- */
.toolbar {
  display: flex; flex-wrap: wrap; gap: 10px 24px;
  align-items: center; justify-content: space-between; margin-bottom: 12px;
}
.toolbar .group { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; }
.toggles label, label.check { display: inline-flex; gap: 5px; align-items: center; color: var(--muted); cursor: pointer; }
label.check { margin: 6px 0; }
button, select, label.file {
  background: var(--panel-2); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px;
  padding: 7px 12px; font: inherit; cursor: pointer;
}
button:hover, label.file:hover { border-color: var(--accent); }
button:disabled { opacity: 0.4; cursor: default; }
select { width: 100%; }
label.file { display: inline-block; margin: 6px 0; }
label.file input { display: none; }
.panel button { margin: 4px 4px 4px 0; }
.speed { display: inline-flex; align-items: center; gap: 6px; }
.speed button { padding: 7px 11px; }
#speedLabel { min-width: 34px; text-align: center; font-weight: 700; color: var(--accent); }

/* ---------- Schede di stato ---------- */
.status { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin-bottom: 12px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; min-width: 0; }
.card .label { color: var(--muted); font-size: 12px; }
.card .value { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.card .sub { color: var(--muted); font-size: 11.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
body.demo-on .status .card:first-child { border-color: var(--accent); }

/* ---------- Pista + barra laterale ---------- */
.main { display: grid; grid-template-columns: minmax(0, 1fr) 390px; gap: 12px; align-items: start; }
@media (max-width: 1150px) { .main { grid-template-columns: 1fr; } }
.track-panel { padding: 10px; }
#canvas { display: block; width: 100%; height: auto; background: #1f2229; border-radius: 8px; }
body.demo-on #canvas { outline: 2px solid var(--accent); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-top: 8px; color: var(--muted); font-size: 12px; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { display: inline-block; width: 12px; height: 8px; border-radius: 2px; font-style: normal; }
.legend i.x { width: auto; height: auto; background: none; font-size: 11px; }
.legend .speedscale b { font-weight: 400; }
.legend i.grad { width: 90px; height: 8px; background: linear-gradient(90deg, hsl(240,85%,55%), hsl(180,85%,55%), hsl(120,85%,55%), hsl(60,85%,55%), hsl(0,85%,55%)); }
.side { display: flex; flex-direction: column; gap: 12px; }

/* ---------- Leader in diretta ---------- */
.live-head { display: flex; align-items: center; gap: 8px; }
.live-head .name { font-family: ui-monospace, Consolas, monospace; font-size: 16px; font-weight: 700; color: var(--accent); }
.tag { font-size: 11px; font-weight: 700; color: #111; padding: 2px 8px; border-radius: 99px; }
.compound { margin-left: auto; width: 22px; height: 22px; border-radius: 50%; border: 3px solid; display: grid; place-items: center; font-size: 11px; font-weight: 700; }
.origin { color: var(--muted); font-size: 12px; margin: 4px 0 8px; }
.kv { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.kv div { background: var(--panel-2); border-radius: 8px; padding: 5px 7px; min-width: 0; }
.kv span { display: block; color: var(--muted); font-size: 10.5px; }
.kv b { font-variant-numeric: tabular-nums; font-size: 13px; }
.kv small { font-weight: 400; color: var(--muted); }
.pbar { position: relative; height: 18px; background: var(--panel-2); border-radius: 99px; margin-top: 8px; overflow: hidden; }
.pbar div { height: 100%; background: linear-gradient(90deg, #2980b9, #f1c40f); }
.pbar span { position: absolute; inset: 0; text-align: center; font-size: 11px; line-height: 18px; font-weight: 600; }

.sectors { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-top: 8px; }
.sec { background: var(--panel-2); border-radius: 6px; padding: 3px 8px; font-size: 11px; color: var(--muted); display: flex; justify-content: space-between; border-left: 3px solid #555; }
.sec b { color: var(--text); font-variant-numeric: tabular-nums; }
.sec.purple { border-color: var(--purple); } .sec.purple b { color: var(--purple); }
.sec.green { border-color: var(--green); } .sec.green b { color: var(--green); }
.sec.yellow { border-color: #f1c40f; } .sec.yellow b { color: #f1c40f; }
.badges { min-height: 22px; margin-top: 6px; display: flex; gap: 5px; flex-wrap: wrap; }
.badge { font-size: 10.5px; font-weight: 700; padding: 2px 7px; border-radius: 4px; }
.badge.good { background: rgba(46,204,113,0.2); color: var(--green); }
.badge.bad { background: rgba(231,76,60,0.2); color: var(--red); }
.badge.warn { background: rgba(140,105,60,0.35); color: #e0b27a; }

.cockpit { display: grid; grid-template-columns: 90px 1fr 100px; gap: 10px; align-items: center; margin-top: 6px; }
.pedals { display: flex; gap: 8px; height: 76px; }
.pedal { flex: 1; position: relative; background: var(--panel-2); border-radius: 6px; overflow: hidden; }
.pfill { position: absolute; left: 0; right: 0; bottom: 14px; }
.pfill.gas { background: var(--green); } .pfill.brake { background: var(--red); }
.pedal span { position: absolute; bottom: 1px; left: 0; right: 0; text-align: center; font-size: 9px; color: var(--muted); }
.wheel-box { text-align: center; color: var(--muted); font-size: 11px; }
.wheel { width: 64px; height: 64px; margin: 0 auto 4px; border: 6px solid #555c6b; border-radius: 50%; position: relative; }
.wheel i { position: absolute; left: 50%; top: -6px; width: 4px; height: 14px; margin-left: -2px; background: var(--accent); border-radius: 2px; }
.wheel::after { content: ''; position: absolute; left: 4px; right: 4px; top: 50%; height: 5px; margin-top: -2px; background: #555c6b; }
.tyres { text-align: center; color: var(--muted); font-size: 11px; }
.tyre-temp { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; }
.wearbar, .minibar { height: 8px; background: var(--panel-2); border-radius: 4px; overflow: hidden; margin: 4px 0; }
.wearbar div, .minibar div { height: 100%; background: linear-gradient(90deg, var(--red), #f1c40f, var(--green)); background-size: 200% 100%; background-position: right; }
.minibar { width: 44px; margin: 0; }

.sensors { display: flex; gap: 5px; height: 64px; }
.sbar { flex: 1; position: relative; background: var(--panel-2); border-radius: 5px; overflow: hidden; }
.sbar .fill { position: absolute; bottom: 14px; left: 0; right: 0; }
.sbar span { position: absolute; bottom: 1px; left: 0; right: 0; text-align: center; font-size: 10px; color: var(--muted); }
.inputs { display: grid; gap: 3px; }
.irow { display: grid; grid-template-columns: 58px 1fr 42px; gap: 8px; align-items: center; font-size: 11.5px; color: var(--muted); }
.irow em { font-style: normal; text-align: right; font-variant-numeric: tabular-nums; color: var(--text); }
.otrack { position: relative; height: 8px; background: var(--panel-2); border-radius: 99px; overflow: hidden; }
.ozero { position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: rgba(255,255,255,0.3); }
.ofill { position: absolute; top: 0; bottom: 0; }
.ofill.pos { background: #f1c40f; } .ofill.neg { background: #5dade2; }
.gg-wrap { display: flex; gap: 10px; align-items: center; }
#ggLive { width: 170px; height: 170px; flex: none; }
#ggCap { font-size: 11.5px; margin: 0; }

/* ---------- Torre dei tempi ---------- */
table.tower td { padding: 3px 6px; }
table.tower td.pos { font-weight: 700; color: var(--accent); width: 24px; }
table.tower tr:first-child td { color: var(--text); font-weight: 600; }

/* ---------- Schede ---------- */
.tabs { display: flex; flex-wrap: wrap; gap: 6px; margin: 22px 0 12px; border-bottom: 1px solid var(--line); padding-bottom: 8px; }
.tabs button { border-radius: 8px 8px 0 0; }
.tabs button.active { background: var(--accent); color: #111; font-weight: 700; border-color: var(--accent); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(380px, 1fr)); gap: 12px; }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(420px, 1fr)); margin-top: 12px; }
.span2 { grid-column: span 2; }
.panel.wide { margin-top: 12px; }
@media (max-width: 900px) { .span2 { grid-column: auto; } .grid, .grid.two { grid-template-columns: 1fr; } }
canvas.chart { width: 100%; height: auto; display: block; }
.explain-box p { color: var(--muted); margin: 6px 0 0; max-width: 1100px; }
.explain-box { margin-bottom: 12px; }

/* ---------- Parametri e setup ---------- */
.param { margin-bottom: 12px; }
.param > label { display: block; color: var(--muted); font-size: 12.5px; margin-bottom: 4px; }
.param-head { display: flex; justify-content: space-between; }
.param-head b { color: var(--accent); }
.param input[type=range] { width: 100%; accent-color: var(--accent); }
.param p { margin: 2px 0 0; color: var(--muted); font-size: 11.5px; }

.specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 8px; }
.spec { background: var(--panel-2); border-radius: 8px; padding: 8px 10px; }
.spec span { display: block; color: var(--muted); font-size: 11.5px; }
.spec b { font-size: 18px; font-variant-numeric: tabular-nums; }
.spec em { display: block; font-style: normal; color: var(--muted); font-size: 10.5px; }

/* ---------- Tabelle ---------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
th { text-align: left; color: var(--muted); font-weight: 600; padding: 4px 6px; border-bottom: 1px solid var(--line); white-space: nowrap; }
td { padding: 4px 6px; border-bottom: 1px solid var(--line); white-space: nowrap; font-variant-numeric: tabular-nums; }
tr.elite td:first-child { color: var(--green); font-weight: 700; }
tr.elite { background: rgba(46,204,113,0.06); }
.sectors-table tr.purple td { color: var(--purple); }
.sectors-table tr.rec td:first-child { color: var(--green); }
.sectors-table tr.lts td { color: var(--muted); font-style: italic; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; }
.kids { position: relative; width: 60px; height: 14px; background: var(--panel-2); border-radius: 4px; overflow: hidden; }
.kids div { height: 100%; background: rgba(243,156,18,0.6); }
.kids span { position: absolute; inset: 0; font-size: 11px; line-height: 14px; padding-left: 5px; }

/* ---------- Diario ---------- */
#log { list-style: none; margin: 0; padding: 0; max-height: 470px; overflow-y: auto; }
#log li { display: grid; grid-template-columns: 22px 42px 1fr; gap: 4px; padding: 4px 0; border-bottom: 1px solid var(--line); font-size: 12.5px; }
#log .gen { color: var(--muted); font-family: ui-monospace, Consolas, monospace; font-size: 11.5px; }
#log .ev-gen { color: var(--muted); }
#log .ev-record { color: var(--green); font-weight: 600; }
#log .ev-milestone, #log .ev-finish { color: #f1c40f; }
#log .ev-track { color: #5dade2; }

/* ---------- Spiegazione ---------- */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 12px; }
.step { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; }
.step b { color: var(--accent); }
.step p { margin: 6px 0 0; color: var(--muted); font-size: 13px; }
.foot { margin-top: 24px; color: var(--muted); font-size: 12.5px; text-align: center; }
canvas.chart.net { max-width: 640px; margin: 0 auto; }