/* ── KartOps design tokens ─────────────────────────────────────────────── */
:root {
  --bg:        #0f1115;
  --bg-2:      #151922;
  --panel:     #1a1f2b;
  --panel-2:   #212736;
  --line:      #2a3242;
  --line-soft: #222937;
  --text:      #e8ecf3;
  --text-dim:  #97a3b6;
  --text-mute: #6b7789;
  --accent:    #e0453e;
  --accent-2:  #ff6b5b;
  --ok:        #22c55e;
  --warn:      #f59e0b;
  --due:       #ef4444;
  --info:      #38bdf8;
  --purple:    #a78bfa;
  --radius:    10px;
  --radius-sm: 6px;
  --shadow:    0 4px 20px rgba(0,0,0,.35);
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--sans); font-size: 14px; line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -0.01em; }
h1 { font-size: 22px; } h2 { font-size: 17px; } h3 { font-size: 14px; }
p { margin: 0 0 10px; }
hr { border: 0; border-top: 1px solid var(--line); margin: 18px 0; }
::selection { background: var(--accent); color: #fff; }

/* ── Layout ───────────────────────────────────────────────────────────── */
#app { display: flex; min-height: 100vh; }

.sidebar {
  width: 224px; flex: none; background: var(--bg-2);
  border-right: 1px solid var(--line); display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh;
}
.brand {
  display: flex; align-items: center; gap: 10px; padding: 18px 16px 16px;
  border-bottom: 1px solid var(--line);
}
.brand-mark {
  width: 30px; height: 30px; border-radius: 8px; flex: none;
  background: linear-gradient(135deg, var(--accent), #8b1e1a);
  display: grid; place-items: center; font-size: 16px;
}
.brand-name { font-weight: 700; letter-spacing: -0.02em; font-size: 16px; }
.brand-sub { font-size: 10px; color: var(--text-mute); text-transform: uppercase; letter-spacing: .09em; }

.nav { padding: 10px 8px; flex: 1; overflow-y: auto; }
.nav-group { margin: 14px 0 4px; padding: 0 8px; font-size: 10px; text-transform: uppercase;
  letter-spacing: .1em; color: var(--text-mute); }
.nav a {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: var(--radius-sm);
  color: var(--text-dim); font-weight: 500; font-size: 13.5px; text-decoration: none; margin-bottom: 1px;
}
.nav a:hover { background: var(--panel); color: var(--text); }
.nav a.active { background: var(--panel-2); color: #fff; box-shadow: inset 2px 0 0 var(--accent); }
.nav .ico { width: 18px; text-align: center; font-size: 14px; }
.nav .badge { margin-left: auto; }

.sidebar-foot { border-top: 1px solid var(--line); padding: 10px; }
.userbox { display: flex; align-items: center; gap: 9px; padding: 6px; border-radius: var(--radius-sm); }
.userbox:hover { background: var(--panel); }
.avatar {
  width: 28px; height: 28px; border-radius: 50%; flex: none; display: grid; place-items: center;
  background: var(--panel-2); border: 1px solid var(--line); font-size: 11px; font-weight: 700; color: var(--text-dim);
}

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
  display: flex; align-items: center; gap: 14px; padding: 14px 24px;
  border-bottom: 1px solid var(--line); background: rgba(15,17,21,.9);
  backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 20;
}
.topbar .spacer { flex: 1; }
.crumbs { font-size: 12px; color: var(--text-mute); }
.crumbs a { color: var(--text-dim); }
.content { padding: 22px 24px 60px; max-width: 1400px; width: 100%; }

/* ── Buttons ──────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 13px; border-radius: var(--radius-sm);
  border: 1px solid var(--line); background: var(--panel); color: var(--text);
  font: inherit; font-size: 13px; font-weight: 500; cursor: pointer; white-space: nowrap;
  transition: background .12s, border-color .12s, opacity .12s;
}
.btn:hover { background: var(--panel-2); border-color: #3a4459; text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-2); border-color: var(--accent-2); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--text-dim); }
.btn-ghost:hover { background: var(--panel); color: var(--text); }
.btn-danger { color: #ff8b83; border-color: #4a2b2b; }
.btn-danger:hover { background: #3a1f1f; border-color: #6b3a37; }
.btn-sm { padding: 4px 9px; font-size: 12px; }
.btn-xs { padding: 2px 7px; font-size: 11px; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

/* ── Cards & panels ───────────────────────────────────────────────────── */
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; margin-bottom: 16px;
}
.card-head {
  display: flex; align-items: center; gap: 10px; margin-bottom: 14px; padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}
.card-head .spacer { flex: 1; }
.card-title { font-size: 14px; font-weight: 650; letter-spacing: -0.01em; }
.card-sub { font-size: 12px; color: var(--text-mute); font-weight: 400; }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }

.stat { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.stat-label { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--text-mute); }
.stat-value { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; margin-top: 4px; font-variant-numeric: tabular-nums; }
.stat-value small { font-size: 13px; font-weight: 500; color: var(--text-dim); margin-left: 2px; }
.stat-foot { font-size: 11.5px; color: var(--text-mute); margin-top: 3px; }

/* ── Badges & pills ───────────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 999px;
  font-size: 11px; font-weight: 600; letter-spacing: .02em; border: 1px solid transparent;
  background: var(--panel-2); color: var(--text-dim); white-space: nowrap;
}
.badge-ok   { background: rgba(34,197,94,.13);  color: #4ade80; border-color: rgba(34,197,94,.3); }
.badge-soon { background: rgba(245,158,11,.13); color: #fbbf24; border-color: rgba(245,158,11,.3); }
.badge-due  { background: rgba(239,68,68,.15);  color: #f87171; border-color: rgba(239,68,68,.35); }
.badge-info { background: rgba(56,189,248,.13); color: #7dd3fc; border-color: rgba(56,189,248,.3); }
.badge-mute { background: var(--panel-2); color: var(--text-mute); border-color: var(--line); }
.badge-purple { background: rgba(167,139,250,.14); color: #c4b5fd; border-color: rgba(167,139,250,.3); }

/* ── Progress ─────────────────────────────────────────────────────────── */
.bar { height: 7px; background: var(--panel-2); border-radius: 999px; overflow: hidden; border: 1px solid var(--line-soft); }
.bar > i { display: block; height: 100%; border-radius: 999px; transition: width .4s ease; }
.bar-ok > i   { background: linear-gradient(90deg, #16a34a, #22c55e); }
.bar-soon > i { background: linear-gradient(90deg, #d97706, #f59e0b); }
.bar-due > i  { background: linear-gradient(90deg, #b91c1c, #ef4444); }

/* ── Tables ───────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th {
  text-align: left; padding: 9px 12px; font-size: 11px; text-transform: uppercase; letter-spacing: .07em;
  color: var(--text-mute); font-weight: 600; border-bottom: 1px solid var(--line); background: var(--bg-2);
  white-space: nowrap; position: sticky; top: 0;
}
td { padding: 9px 12px; border-bottom: 1px solid var(--line-soft); vertical-align: middle; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: rgba(255,255,255,.02); }
tr.clickable { cursor: pointer; }
.num { font-variant-numeric: tabular-nums; text-align: right; }
.mono { font-family: var(--mono); font-size: 12.5px; }
.laptime { font-family: var(--mono); font-weight: 600; font-variant-numeric: tabular-nums; }

/* ── Forms ────────────────────────────────────────────────────────────── */
.field { margin-bottom: 12px; min-width: 0; }
.field > label { display: block; font-size: 11.5px; color: var(--text-dim); margin-bottom: 4px; font-weight: 500; }
.field .hint { font-size: 11px; color: var(--text-mute); margin-top: 3px; }
input, select, textarea {
  width: 100%; padding: 7px 10px; border-radius: var(--radius-sm); background: var(--bg-2);
  border: 1px solid var(--line); color: var(--text); font: inherit; font-size: 13px; outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(224,69,62,.15); }
input::placeholder, textarea::placeholder { color: #55607250; color: var(--text-mute); opacity: .7; }
textarea { min-height: 68px; resize: vertical; font-family: inherit; }
select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%2397a3b6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center; padding-right: 28px; }
input[type=checkbox] { width: auto; accent-color: var(--accent); }
.input-unit { position: relative; }
.input-unit .unit {
  position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
  font-size: 11px; color: var(--text-mute); pointer-events: none;
}
.input-unit input { padding-right: 42px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 0 14px; }
.form-grid .wide { grid-column: 1 / -1; }
.inline-form { display: flex; gap: 8px; align-items: flex-end; flex-wrap: wrap; }
.inline-form .field { margin-bottom: 0; }

/* ── Tabs ─────────────────────────────────────────────────────────────── */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); margin-bottom: 18px; overflow-x: auto; }
.tab {
  padding: 9px 14px; font-size: 13px; font-weight: 500; color: var(--text-dim); cursor: pointer;
  border: 0; background: none; font-family: inherit; white-space: nowrap; border-bottom: 2px solid transparent;
}
.tab:hover { color: var(--text); }
.tab.active { color: #fff; border-bottom-color: var(--accent); }

/* ── Misc ─────────────────────────────────────────────────────────────── */
.muted { color: var(--text-mute); }
.dim { color: var(--text-dim); }
.small { font-size: 12px; }
.tiny { font-size: 11px; }
.right { text-align: right; }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.flex { display: flex; align-items: center; gap: 10px; }
.flex-wrap { flex-wrap: wrap; }
.spacer { flex: 1; }
.mt { margin-top: 14px; } .mt-lg { margin-top: 24px; } .mb { margin-bottom: 14px; } .m0 { margin: 0; }
.empty { text-align: center; padding: 40px 20px; color: var(--text-mute); }
.empty-icon { font-size: 30px; opacity: .5; margin-bottom: 10px; }
.divider { height: 1px; background: var(--line-soft); margin: 14px 0; }
.kv { display: grid; grid-template-columns: minmax(120px, auto) 1fr; gap: 5px 14px; font-size: 13px; }
.kv dt { color: var(--text-mute); }
.kv dd { margin: 0; }
.chip {
  display: inline-block; padding: 2px 7px; border-radius: 4px; background: var(--panel-2);
  border: 1px solid var(--line); font-size: 11.5px; color: var(--text-dim);
}
.tag-list { display: flex; gap: 6px; flex-wrap: wrap; }
.link-btn { background: none; border: 0; color: var(--accent-2); cursor: pointer; font: inherit; padding: 0; }
.link-btn:hover { text-decoration: underline; }

/* ── Login ────────────────────────────────────────────────────────────── */
.login-wrap { display: grid; place-items: center; min-height: 100vh; width: 100%;
  background: radial-gradient(1000px 600px at 50% -10%, #1e2534, var(--bg)); }
.login-card { width: 100%; max-width: 380px; padding: 28px; background: var(--panel);
  border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); }
.login-head { text-align: center; margin-bottom: 22px; }
.login-head .brand-mark { width: 44px; height: 44px; font-size: 22px; margin: 0 auto 12px; border-radius: 12px; }
.error-box { background: rgba(239,68,68,.12); border: 1px solid rgba(239,68,68,.35); color: #fca5a5;
  padding: 9px 12px; border-radius: var(--radius-sm); font-size: 13px; margin-bottom: 14px; }
.info-box { background: rgba(56,189,248,.09); border: 1px solid rgba(56,189,248,.25); color: #bae6fd;
  padding: 10px 12px; border-radius: var(--radius-sm); font-size: 12.5px; }
.hint-box { background: var(--bg-2); border: 1px dashed var(--line); color: var(--text-mute);
  padding: 10px 12px; border-radius: var(--radius-sm); font-size: 12px; }

/* ── Modal ────────────────────────────────────────────────────────────── */
.modal-back { position: fixed; inset: 0; background: rgba(5,7,10,.7); backdrop-filter: blur(3px);
  display: grid; place-items: center; z-index: 100; padding: 20px; }
.modal { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow);
  width: 100%; max-width: 560px; max-height: 88vh; display: flex; flex-direction: column; }
.modal.wide { max-width: 880px; }
.modal-head { padding: 16px 20px; border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 10px; }
.modal-body { padding: 20px; overflow-y: auto; }
.modal-foot { padding: 14px 20px; border-top: 1px solid var(--line); display: flex; gap: 8px; justify-content: flex-end; }

/* ── Toast ────────────────────────────────────────────────────────────── */
#toasts { position: fixed; bottom: 20px; right: 20px; display: flex; flex-direction: column; gap: 8px; z-index: 200; }
.toast { background: var(--panel-2); border: 1px solid var(--line); border-left: 3px solid var(--info);
  padding: 10px 14px; border-radius: var(--radius-sm); box-shadow: var(--shadow); font-size: 13px;
  max-width: 340px; animation: slidein .2s ease; }
.toast.ok { border-left-color: var(--ok); }
.toast.err { border-left-color: var(--due); }
@keyframes slidein { from { opacity: 0; transform: translateX(20px); } }

/* ── Data visualisation tokens ────────────────────────────────────────── */
/* Categorical slots 1-2 validated for CVD separation against this surface. */
.viz-root {
  --viz-surface:     var(--panel);
  --viz-grid:        var(--line-soft);
  --viz-text-muted:  var(--text-mute);
  --viz-panel:       var(--bg-2);
  --viz-text:        var(--text);
  --series-1:        #3987e5;
  --series-2:        #d95926;
  --series-3:        #199e70;
  --series-4:        #c98500;
  --series-5:        #d55181;
  --series-6:        #9085e9;
  --viz-band:        rgba(34, 197, 94, .07);
}
:root { --series-1: #3987e5; --series-2: #d95926; }

/* ── Session setup sheet ──────────────────────────────────────────────── */
.setup-group { margin-bottom: 22px; }
.setup-group > h3 { display: flex; align-items: center; gap: 8px; font-size: 12px; text-transform: uppercase;
  letter-spacing: .08em; color: var(--text-dim); margin-bottom: 10px; padding-bottom: 7px;
  border-bottom: 1px solid var(--line-soft); }
.tyre-box { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; max-width: 300px; }
.session-tab-row { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.session-pill { padding: 7px 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--panel);
  font-size: 12.5px; cursor: pointer; color: var(--text-dim); }
.session-pill:hover { border-color: #3a4459; color: var(--text); }
.session-pill.active { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.density-box { display: flex; gap: 18px; flex-wrap: wrap; background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 10px 14px; margin-bottom: 14px; }

/* Pin control — the filled star carries the state, colour only reinforces it. */
.btn.is-pinned { color: #fbbf24; border-color: rgba(245,158,11,.4); background: rgba(245,158,11,.1); }
.btn.is-pinned:hover { background: rgba(245,158,11,.18); }

/* ── Live kart grid ───────────────────────────────────────────────────── */
.kart-grid {
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}
.kart-tile {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; cursor: pointer; display: flex; flex-direction: column;
  transition: border-color .15s, transform .12s;
}
.kart-tile:hover { border-color: #3a4459; transform: translateY(-1px); }
.kart-tile.is-live { border-color: rgba(34,197,94,.45); }
.tile-head { display: flex; align-items: center; gap: 8px; padding: 10px 12px; font-size: 13px; }
.tile-dot { width: 8px; height: 8px; border-radius: 50%; flex: none; background: var(--text-mute); }
.tile-dot.on { background: var(--ok); box-shadow: 0 0 0 3px rgba(34,197,94,.18); }
.tile-dot.off { background: #4b5563; }
/* Square-ish video area, so a wall of tiles reads as a grid of equal boxes. */
.tile-video { aspect-ratio: 4 / 3; background: #000; overflow: hidden; position: relative; }
.tile-empty { display: grid; place-items: center; background: var(--bg-2); }
.tile-gauges { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line-soft); }
.gauge { background: var(--panel); padding: 8px 6px; text-align: center; }
.gauge-value { font-size: 17px; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: -.02em; }
.gauge-value small { font-size: 10px; font-weight: 500; color: var(--text-mute); margin-left: 2px; }
.gauge-label { font-size: 9.5px; text-transform: uppercase; letter-spacing: .07em; color: var(--text-mute); margin-top: 1px; }
.tile-foot { display: flex; align-items: center; gap: 8px; padding: 8px 12px; border-top: 1px solid var(--line-soft); }

@media (max-width: 640px) {
  .kart-grid { grid-template-columns: 1fr; }
}

/* ── Checklist ────────────────────────────────────────────────────────── */
.check-item { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px 14px;
  margin-bottom: 8px; background: var(--bg-2); }
.check-item.done { border-color: rgba(34,197,94,.35); background: rgba(34,197,94,.05); }
.check-item.skipped { opacity: .55; }
.check-head { display: flex; align-items: flex-start; gap: 10px; }
.check-title { font-weight: 600; font-size: 13.5px; }
.opt-list { margin-top: 10px; display: grid; gap: 6px; }
.opt {
  display: flex; align-items: center; gap: 9px; padding: 7px 10px; border-radius: var(--radius-sm);
  border: 1px solid var(--line-soft); background: var(--panel); font-size: 12.5px;
}
.opt.preferred { border-color: rgba(34,197,94,.35); }
.opt .opt-name { font-weight: 500; }
.opt .opt-meta { color: var(--text-mute); font-size: 11.5px; }
.opt .price { font-variant-numeric: tabular-nums; font-weight: 600; }

.sortable-row { display: flex; gap: 8px; align-items: center; }
.drag { cursor: grab; color: var(--text-mute); user-select: none; }

@media (max-width: 900px) {
  #app { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: relative; flex-direction: row; align-items: center; overflow-x: auto; }
  .nav { display: flex; gap: 4px; padding: 8px; }
  .nav-group { display: none; }
  .nav a { white-space: nowrap; }
  .sidebar-foot { border-top: 0; border-left: 1px solid var(--line); }
  .content { padding: 16px; }
}