/* FLOWVIZ — identity
   Matte carbon (warm near-black, twill weave), flow-viz chartreuse as the
   signature paint, flo-pink as the second tunnel colour, FIA meatball orange
   for illegality, F1 timing purple/green for session data.
   Type: DIN-family industrial (Bahnschrift) display, mono timing figures. */

:root {
  --carbon-0: #100f0d;
  --carbon-1: #171613;
  --carbon-2: #201e1a;
  --carbon-3: #2b2823;
  --line: rgba(242, 241, 236, 0.09);
  --ink: #f2f1ec;
  --ink-2: #a8a49b;
  --ink-3: #6d6a62;
  --viz: #d7f934;          /* flow-viz paint */
  --viz-deep: #839b15;     /* chart series step */
  --pink: #ff5ec4;         /* the other flow-viz can */
  --steel: #9aa7b2;
  --meat: #ff7a00;         /* meatball flag */
  --t-purple: #c9a2ff;     /* session best */
  --t-green: #4fcb8d;      /* personal best */
  --t-yellow: #ffd23f;
  --disp: 'Bahnschrift', 'DIN Alternate', 'Franklin Gothic Medium', 'Arial Narrow', system-ui, sans-serif;
  --body: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --mono: 'Cascadia Mono', 'Consolas', ui-monospace, monospace;
  --meatball-stripes: repeating-linear-gradient(45deg, var(--meat) 0 9px, #151310 9px 18px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background:
    repeating-linear-gradient(45deg, rgba(255,255,255,0.012) 0 2px, transparent 2px 6px),
    repeating-linear-gradient(-45deg, rgba(255,255,255,0.010) 0 2px, transparent 2px 6px),
    var(--carbon-0);
  color: var(--ink);
  font-family: var(--body);
  font-size: 14.5px;
  line-height: 1.45;
  overflow: hidden;
}

#app {
  display: grid;
  grid-template: 'hdr hdr' 56px 'rail stage' 1fr / 218px 1fr;
  height: 100vh;
}

/* ——— header ——— */
.hdr {
  grid-area: hdr;
  display: flex; align-items: center; gap: 20px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--carbon-1), var(--carbon-0));
}
.wordmark { font-family: var(--disp); font-size: 25px; letter-spacing: 0.04em; font-weight: 700; display: flex; }
.wordmark-flow { color: var(--ink); }
.wordmark-viz {
  color: var(--viz); position: relative;
  text-shadow: 0 0 18px rgba(215, 249, 52, 0.35);
}
.wordmark-viz::after {
  content: ''; position: absolute; left: 0; right: -14px; bottom: 2px; height: 3px;
  background: linear-gradient(90deg, var(--viz), rgba(215,249,52,0));
  border-radius: 2px;
}
.hdr-mid { display: flex; align-items: center; gap: 14px; flex: 1; min-width: 0; }
.hdr-car { font-family: var(--disp); font-size: 16px; color: var(--ink-2); letter-spacing: 0.06em; text-transform: uppercase; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hdr-tag { font-size: 11px; color: var(--ink-3); letter-spacing: 0.14em; text-transform: uppercase; }

.legal-badge {
  font-family: var(--disp); font-size: 12.5px; letter-spacing: 0.08em;
  padding: 5px 12px; border-radius: 3px; border: 1px solid var(--line);
  background: var(--carbon-2); color: var(--ink-2); cursor: pointer;
}
.legal-badge.legal-ok { color: #101008; background: var(--viz); border-color: var(--viz); font-weight: 700; }
.legal-badge.legal-warn { color: #14120d; background: var(--t-yellow); border-color: var(--t-yellow); font-weight: 700; }
.legal-badge.legal-bad {
  color: var(--ink); font-weight: 700;
  background: var(--meatball-stripes);
  border: 1px solid var(--meat);
  text-shadow: 0 1px 2px #000;
}

/* ——— rail (the factory corridor) ——— */
.rail {
  grid-area: rail;
  border-right: 1px solid var(--line);
  background: var(--carbon-1);
  padding: 14px 0;
  display: flex; flex-direction: column; gap: 2px;
  overflow-y: auto;
}
.rail-room {
  display: flex; align-items: center; gap: 12px; text-align: left;
  padding: 11px 16px; border: none; background: none; color: var(--ink-2);
  cursor: pointer; position: relative; overflow: hidden;
  border-left: 3px solid transparent;
}
.rail-room:hover { background: var(--carbon-2); color: var(--ink); }
.rail-room:hover::after {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 40%;
  background: linear-gradient(90deg, rgba(215,249,52,0.10), transparent);
  pointer-events: none;
}
.rail-active { border-left-color: var(--viz); background: var(--carbon-2); color: var(--ink); }
.rail-active .rail-name { color: var(--viz); }
.rail-icon { width: 30px; text-align: center; font-size: 15px; color: var(--ink-3); flex-shrink: 0; letter-spacing: -2px; }
.rail-text { display: flex; flex-direction: column; min-width: 0; }
.rail-name { font-family: var(--disp); font-size: 14px; letter-spacing: 0.07em; text-transform: uppercase; }
.rail-sub { font-size: 10.5px; color: var(--ink-3); letter-spacing: 0.04em; }

/* ——— stage ——— */
.stage { grid-area: stage; overflow-y: auto; padding: 20px 24px 60px; }
.room-title { font-family: var(--disp); font-size: 24px; letter-spacing: 0.10em; text-transform: uppercase; margin-bottom: 2px; }
.room-kicker { font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--viz-deep); margin-bottom: 2px; font-weight: 600; }
.room-lede { color: var(--ink-2); max-width: 68ch; margin-bottom: 18px; }

.panel { background: var(--carbon-1); border: 1px solid var(--line); border-radius: 6px; padding: 16px; }
.panel-title { font-family: var(--disp); font-size: 13.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 10px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 1100px) { .grid2, .grid3 { grid-template-columns: 1fr; } }

.btn {
  font-family: var(--disp); font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase;
  background: var(--carbon-2); color: var(--ink); border: 1px solid var(--carbon-3);
  padding: 8px 16px; border-radius: 4px; cursor: pointer;
}
.btn:hover { border-color: var(--viz-deep); color: var(--viz); }
.btn-primary { background: var(--viz); color: #12120a; border-color: var(--viz); font-weight: 700; }
.btn-primary:hover { background: #e5ff5e; color: #12120a; }
.btn-danger { border-color: var(--meat); color: var(--meat); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

input[type='text'], select {
  background: var(--carbon-0); border: 1px solid var(--carbon-3); color: var(--ink);
  padding: 7px 10px; border-radius: 4px; font-family: var(--body); font-size: 13.5px;
}
:focus-visible { outline: 2px solid var(--viz); outline-offset: 1px; }

/* ——— parameter rows ——— */
.pgroup { border: 1px solid var(--line); border-radius: 6px; margin-bottom: 8px; background: var(--carbon-1); }
.pgroup-head {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  padding: 9px 12px; background: none; border: none; color: var(--ink); cursor: pointer;
  font-family: var(--disp); font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase;
}
.pgroup-head:hover { color: var(--viz); }
.pgroup-count { font-size: 11px; color: var(--ink-3); }
.pgroup-body { padding: 4px 12px 10px; display: none; }
.pgroup-open .pgroup-body { display: block; }
.prow { display: grid; grid-template-columns: 1fr 96px; gap: 8px; align-items: center; padding: 5px 0; }
.prow-label { font-size: 12.5px; color: var(--ink-2); display: flex; align-items: center; gap: 6px; }
.prow-label .art-link { color: var(--ink-3); font-size: 10.5px; text-decoration: none; border-bottom: 1px dotted var(--ink-3); cursor: pointer; }
.prow-label .art-link:hover { color: var(--viz); border-color: var(--viz); }
.prow-flag { color: var(--meat); font-weight: 700; cursor: help; }
.prow-value { font-family: var(--mono); font-size: 12px; color: var(--ink); text-align: right; }
.prow-slider { grid-column: 1 / -1; }
input[type='range'] { width: 100%; appearance: none; height: 4px; border-radius: 2px; background: var(--carbon-3); cursor: pointer; }
input[type='range']::-webkit-slider-thumb {
  appearance: none; width: 14px; height: 14px; border-radius: 50%;
  background: var(--viz); border: 2px solid #12120a; box-shadow: 0 0 6px rgba(215,249,52,0.5);
}
input[type='range'].range-illegal::-webkit-slider-thumb { background: var(--meat); box-shadow: 0 0 6px rgba(255,122,0,0.6); }

/* ——— Drawing Office ——— */
.do-layout { display: grid; grid-template-columns: 1fr 360px; gap: 16px; height: calc(100vh - 200px); min-height: 540px; }
.do-viewport { position: relative; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: radial-gradient(ellipse at 50% 30%, #26241f 0%, var(--carbon-0) 75%); }
.do-viewport canvas { display: block; }
.do-panel { overflow-y: auto; padding-right: 4px; }
.do-hud { position: absolute; left: 12px; top: 10px; font-family: var(--mono); font-size: 11.5px; color: var(--ink-2); pointer-events: none; }
.do-hud b { color: var(--viz); }
.do-tools { position: absolute; right: 12px; top: 10px; display: flex; gap: 6px; }
.do-handle-tip {
  position: absolute; pointer-events: none; background: rgba(16,15,13,0.92);
  border: 1px solid var(--viz-deep); color: var(--ink); font-family: var(--mono);
  font-size: 11.5px; padding: 4px 8px; border-radius: 3px; display: none; z-index: 5;
}
.do-presets { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
.chip {
  font-size: 11.5px; padding: 4px 10px; border-radius: 12px; cursor: pointer;
  background: var(--carbon-2); border: 1px solid var(--carbon-3); color: var(--ink-2);
}
.chip:hover { border-color: var(--viz-deep); color: var(--viz); }

/* ——— Scrutineering ——— */
.scru-verdict { display: flex; align-items: center; gap: 18px; padding: 18px; border-radius: 6px; margin-bottom: 16px; border: 1px solid var(--line); background: var(--carbon-1); }
.scru-verdict.ok { border-color: var(--viz-deep); box-shadow: inset 4px 0 0 var(--viz); }
.scru-verdict.bad { background: linear-gradient(90deg, rgba(255,122,0,0.12), var(--carbon-1) 40%); box-shadow: inset 4px 0 0 var(--meat); }
.scru-verdict-title { font-family: var(--disp); font-size: 20px; letter-spacing: 0.08em; text-transform: uppercase; }
.scru-meatball { width: 44px; height: 44px; border-radius: 50%; background: var(--meat); position: relative; flex-shrink: 0; }
.scru-meatball::after { content: ''; position: absolute; inset: 12px; border-radius: 50%; background: #151310; }
.scru-clear { width: 44px; height: 44px; border-radius: 50%; background: var(--viz); flex-shrink: 0; }
.scru-item { display: grid; grid-template-columns: 78px 1fr auto; gap: 12px; align-items: baseline; padding: 8px 12px; border-bottom: 1px solid var(--line); }
.scru-item:last-child { border-bottom: none; }
.scru-art { font-family: var(--mono); font-size: 12px; color: var(--ink-3); cursor: pointer; text-decoration: underline dotted; }
.scru-art:hover { color: var(--viz); }
.scru-name { font-size: 13px; }
.scru-detail { font-size: 11.5px; color: var(--ink-3); }
.scru-val { font-family: var(--mono); font-size: 12.5px; }
.scru-pass .scru-val { color: var(--t-green); }
.scru-breach { background: rgba(255, 122, 0, 0.07); }
.scru-breach .scru-val { color: var(--meat); font-weight: 700; }
.scru-warn .scru-val { color: var(--t-yellow); }

/* ——— Tunnel ——— */
.tun-layout { display: grid; grid-template-columns: 1fr 330px; gap: 16px; }
.tun-viewport { position: relative; height: 400px; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: linear-gradient(180deg, #1d2126 0%, var(--carbon-0) 80%); }
.tun-readouts { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.stat { background: var(--carbon-1); border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; }
.stat-label { font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); }
.stat-value { font-family: var(--mono); font-size: 22px; color: var(--ink); margin-top: 2px; }
.stat-unit { font-size: 12px; color: var(--ink-3); margin-left: 4px; }
.stat-note { font-size: 11px; color: var(--ink-3); margin-top: 2px; }
.stat-good .stat-value { color: var(--t-green); }
.stat-warn .stat-value { color: var(--t-yellow); }
.stat-bad .stat-value { color: var(--meat); }
.stat-viz .stat-value { color: var(--viz); }

/* ——— charts ——— */
.ch { width: 100%; height: auto; display: block; }
.ch-tick { font-family: var(--mono); font-size: 10px; fill: var(--ink-3); }
.ch-label { font-family: var(--body); font-size: 11px; }
.ch-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 4px; }
.ch-legend { display: flex; gap: 12px; flex-wrap: wrap; }
.ch-chip { display: flex; gap: 5px; align-items: center; font-size: 11px; color: var(--ink-2); }
.ch-swatch { width: 10px; height: 10px; border-radius: 2px; }
.ch-tablebtn { font-size: 10.5px; color: var(--ink-3); cursor: pointer; letter-spacing: 0.1em; text-transform: uppercase; border-bottom: 1px dotted var(--ink-3); }
.ch-tablebtn:hover { color: var(--viz); }
.ch-table { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 11.5px; }
.ch-table th, .ch-table td { padding: 3px 8px; text-align: right; border-bottom: 1px solid var(--line); }
.ch-table th { color: var(--ink-3); font-weight: 400; }
.ch-tip { position: absolute; background: rgba(16,15,13,0.94); border: 1px solid var(--carbon-3); padding: 6px 10px; border-radius: 4px; font-size: 11.5px; pointer-events: none; z-index: 4; }
.ch-tip-x { color: var(--ink-3); font-family: var(--mono); font-size: 10.5px; margin-bottom: 2px; }
.ch-empty { color: var(--ink-3); font-size: 12.5px; padding: 30px; text-align: center; }
.ch-caption { font-size: 11px; color: var(--ink-3); margin-top: 6px; }

.heat { display: grid; gap: 2px; }
.heat-cell { aspect-ratio: 1.6; border-radius: 2px; position: relative; cursor: default; }
.heat-cell:hover::after { content: attr(data-v); position: absolute; inset: 0; display: grid; place-items: center; font-family: var(--mono); font-size: 9.5px; color: #fff; background: rgba(0,0,0,0.45); border-radius: 2px; }
.heat-stall { background: var(--meatball-stripes) !important; opacity: 0.55; }
.heat-xlab, .heat-ylab, .heat-corner { font-family: var(--mono); font-size: 9.5px; color: var(--ink-3); display: grid; place-items: center; }

/* ——— timing tower ——— */
.tower { border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.tower-row { display: grid; grid-template-columns: 34px 6px 1fr auto; gap: 10px; align-items: center; padding: 6px 12px 6px 8px; border-bottom: 1px solid var(--line); background: var(--carbon-1); }
.tower-row:last-child { border-bottom: none; }
.tower-user { background: rgba(215, 249, 52, 0.07); box-shadow: inset 3px 0 0 var(--viz); }
.tower-pos { font-family: var(--disp); font-size: 15px; text-align: center; color: var(--ink-2); }
.tower-team { height: 22px; border-radius: 2px; }
.tower-name { font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tower-info { font-family: var(--mono); font-size: 12.5px; color: var(--ink-2); }
.tower-sub { grid-column: 3 / -1; font-size: 10.5px; color: var(--ink-3); }
.tag-purple { color: var(--t-purple) !important; font-weight: 700; }
.tag-green { color: var(--t-green) !important; font-weight: 700; }
.tag-yellow { color: var(--t-yellow) !important; }
.tag-user { color: var(--viz) !important; font-weight: 700; }

.trackmap { width: 100%; max-height: 260px; }

/* ——— Rulebook ——— */
.rb-layout { display: grid; grid-template-columns: 300px 1fr; gap: 16px; }
.rb-list { max-height: calc(100vh - 260px); overflow-y: auto; }
.rb-item { padding: 8px 12px; border-bottom: 1px solid var(--line); cursor: pointer; }
.rb-item:hover, .rb-item.rb-sel { background: var(--carbon-2); }
.rb-item-art { font-family: var(--mono); font-size: 11px; color: var(--viz-deep); }
.rb-item.rb-sel .rb-item-art { color: var(--viz); }
.rb-item-title { font-size: 12.5px; }
.rb-body { font-size: 14px; line-height: 1.6; color: var(--ink); max-width: 70ch; }
.rb-art-big { font-family: var(--mono); font-size: 13px; color: var(--viz); letter-spacing: 0.06em; }
.rb-book { font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-3); }
.rb-params { margin-top: 14px; display: flex; gap: 6px; flex-wrap: wrap; }
.rb-status { margin-top: 14px; padding: 10px 12px; border-radius: 4px; font-family: var(--mono); font-size: 12.5px; }
.rb-status.ok { background: rgba(79, 203, 141, 0.1); color: var(--t-green); }
.rb-status.bad { background: rgba(255, 122, 0, 0.12); color: var(--meat); }

/* ——— Lights Out / sessions ——— */
.lo-tabs { display: flex; gap: 4px; margin-bottom: 16px; border-bottom: 1px solid var(--line); }
.lo-tab { font-family: var(--disp); font-size: 13.5px; letter-spacing: 0.1em; text-transform: uppercase; padding: 9px 18px; background: none; border: none; color: var(--ink-3); cursor: pointer; border-bottom: 2px solid transparent; }
.lo-tab:hover { color: var(--ink); }
.lo-tab-active { color: var(--viz); border-bottom-color: var(--viz); }
.lo-trackpick { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.lo-trackcard { padding: 10px 12px; background: var(--carbon-1); border: 1px solid var(--line); border-radius: 6px; cursor: pointer; text-align: left; color: var(--ink); }
.lo-trackcard:hover { border-color: var(--viz-deep); }
.lo-trackcard.lo-sel { border-color: var(--viz); box-shadow: 0 0 0 1px var(--viz); }
.lo-tc-round { font-family: var(--mono); font-size: 10px; color: var(--ink-3); }
.lo-tc-name { font-family: var(--disp); font-size: 14px; letter-spacing: 0.04em; }
.lo-tc-info { font-size: 10.5px; color: var(--ink-3); }
.lo-result-big { font-family: var(--mono); font-size: 40px; color: var(--viz); }
.lo-sector { font-family: var(--mono); font-size: 13px; }
.eventlog { font-size: 12.5px; max-height: 260px; overflow-y: auto; }
.eventlog div { padding: 4px 8px; border-bottom: 1px solid var(--line); color: var(--ink-2); }
.eventlog b { color: var(--ink); font-family: var(--mono); font-weight: 400; margin-right: 8px; }

/* ——— Programme ——— */
.prog-atr { display: flex; gap: 16px; }
.atr-gauge { flex: 1; }
.atr-bar { height: 8px; border-radius: 4px; background: var(--carbon-3); overflow: hidden; }
.atr-fill { height: 100%; background: var(--viz); border-radius: 4px; }
.atr-fill.low { background: var(--meat); }
.prog-round { display: flex; align-items: center; gap: 14px; }
.prog-roundnum { font-family: var(--disp); font-size: 42px; color: var(--viz); line-height: 1; }
.upgrade-row { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; font-family: var(--mono); font-size: 12px; padding: 4px 0; border-bottom: 1px solid var(--line); }

/* ——— Garage ——— */
.gar-card { display: grid; grid-template-columns: 8px 1fr auto; gap: 12px; align-items: center; padding: 10px 12px; background: var(--carbon-1); border: 1px solid var(--line); border-radius: 6px; margin-bottom: 8px; }
.gar-stripe { height: 100%; border-radius: 2px; min-height: 38px; }
.gar-name { font-family: var(--disp); font-size: 15px; letter-spacing: 0.04em; }
.gar-meta { font-size: 11px; color: var(--ink-3); font-family: var(--mono); }

/* ——— toasts & modal ——— */
.toasts { position: fixed; bottom: 20px; right: 20px; display: flex; flex-direction: column; gap: 8px; z-index: 60; }
.toast { background: var(--carbon-2); border: 1px solid var(--viz-deep); border-radius: 5px; padding: 10px 16px; font-size: 13px; box-shadow: 0 6px 24px rgba(0,0,0,0.5); animation: slidein 0.25s ease; max-width: 380px; }
.toast.bad { border-color: var(--meat); }
.toast.good { border-color: var(--viz); }
.toast-out { opacity: 0; transition: opacity 0.4s; }
@keyframes slidein { from { transform: translateX(30px); opacity: 0; } }

.modal-wrap { position: fixed; inset: 0; background: rgba(10, 9, 8, 0.7); display: grid; place-items: center; z-index: 50; }
.modal { background: var(--carbon-1); border: 1px solid var(--carbon-3); border-radius: 8px; width: min(640px, 92vw); max-height: 86vh; display: flex; flex-direction: column; box-shadow: 0 20px 60px rgba(0,0,0,0.6); }
.modal-head { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.modal-head h3 { font-family: var(--disp); font-size: 16px; letter-spacing: 0.08em; text-transform: uppercase; }
.modal-x { background: none; border: none; color: var(--ink-2); font-size: 22px; cursor: pointer; }
.modal-body { padding: 16px 18px; overflow-y: auto; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; padding: 12px 18px; border-top: 1px solid var(--line); }

/* misc */
.mono { font-family: var(--mono); }
.dim { color: var(--ink-3); }
.small { font-size: 11.5px; }
.mt { margin-top: 14px; }
.mb { margin-bottom: 14px; }
hr.rule { border: none; border-top: 1px solid var(--line); margin: 14px 0; }

@media (max-width: 900px) {
  #app { grid-template: 'hdr' 56px 'rail' auto 'stage' 1fr / 1fr; }
  .rail { flex-direction: row; overflow-x: auto; padding: 4px; }
  .rail-room { border-left: none; border-bottom: 3px solid transparent; padding: 8px 10px; }
  .rail-active { border-bottom-color: var(--viz); }
  .rail-sub, .rail-icon { display: none; }
  .do-layout, .tun-layout, .rb-layout { grid-template-columns: 1fr; height: auto; }
  .hdr-tag { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}