:root {
  --clc-bg: #06090f;
  --clc-panel: #101722;
  --clc-panel-2: #151e2c;
  --clc-text: #f7f9fc;
  --clc-muted: #a9b3c2;
  --clc-border: rgba(255,255,255,.12);
  --clc-blue: #287cff;
  --clc-red: #ef3b4b;
  --clc-cyan: #28d9e8;
  --clc-green: #53d66f;
  --clc-gold: #f2b928;
}

.clc-app {
  width: min(96vw, 1680px);
  margin: 24px calc(50% - min(48vw, 840px));
  color: var(--clc-text);
  background:
    radial-gradient(circle at 15% 12%, rgba(40,124,255,.12), transparent 28%),
    radial-gradient(circle at 82% 5%, rgba(239,59,75,.10), transparent 24%),
    var(--clc-bg);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 28px 84px rgba(0,0,0,.42);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.clc-app *, .clc-app *::before, .clc-app *::after { box-sizing: border-box; }

.clc-loading, .clc-error, .clc-no-data {
  min-height: 260px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 12px;
  padding: 36px;
  color: var(--clc-muted);
  text-align: center;
}

.clc-spinner {
  width: 42px;
  height: 42px;
  border: 3px solid rgba(255,255,255,.14);
  border-top-color: var(--clc-cyan);
  border-radius: 50%;
  animation: clc-spin .85s linear infinite;
}

@keyframes clc-spin { to { transform: rotate(360deg); } }

.clc-circuit-hero {
  display: grid;
  grid-template-columns: 1.3fr .7fr;
  gap: 30px;
  align-items: end;
  padding: clamp(28px, 4vw, 58px);
  border-bottom: 1px solid var(--clc-border);
  background:
    linear-gradient(115deg, rgba(5,8,13,.97), rgba(15,23,35,.82)),
    repeating-linear-gradient(135deg, transparent 0 24px, rgba(255,255,255,.02) 24px 25px);
}

.clc-eyebrow {
  color: var(--clc-red);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: .16em;
}

.clc-circuit-hero h1 {
  margin: 10px 0 8px;
  color: #fff;
  font-size: clamp(42px, 6vw, 84px);
  line-height: .9;
  letter-spacing: -.055em;
  text-transform: uppercase;
}

.clc-race-name { color: #fff; font-size: 20px; font-weight: 850; margin: 14px 0 4px; }
.clc-location { color: var(--clc-muted); margin: 0; }

.clc-selector-actions {
  display: grid;
  grid-template-columns: 48px 1fr 48px;
  gap: 8px;
}

.clc-selector-actions button, .clc-selector-actions select, .clc-play-lap {
  min-height: 48px;
  border: 1px solid var(--clc-border);
  border-radius: 13px;
  color: #fff;
  background: rgba(255,255,255,.055);
  font-weight: 850;
}

.clc-selector-actions button, .clc-play-lap { cursor: pointer; }
.clc-selector-actions button { font-size: 30px; }
.clc-selector-actions select { width: 100%; padding: 0 12px; }
.clc-selector-actions option { color: #111; }

.clc-dashboard {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(320px, .65fr);
  border-bottom: 1px solid var(--clc-border);
}

.clc-track-panel {
  min-width: 0;
  padding: 22px;
  border-right: 1px solid var(--clc-border);
}

.clc-track-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  margin-bottom: 14px;
}

.clc-legend { display: flex; flex-wrap: wrap; gap: 14px; color: var(--clc-muted); font-size: 12px; }
.clc-legend span { display: inline-flex; align-items: center; gap: 6px; }
.clc-legend i { width: 10px; height: 10px; border-radius: 50%; }
.clc-legend .s1 { background: var(--clc-blue); }
.clc-legend .s2 { background: var(--clc-red); }
.clc-legend .s3 { background: var(--clc-cyan); }

.clc-play-lap { padding: 0 16px; }
.clc-play-lap:hover { color: #070a0f; background: var(--clc-cyan); border-color: var(--clc-cyan); }

.clc-track-wrap {
  min-height: 560px;
  display: grid;
  place-items: center;
  border: 1px solid var(--clc-border);
  border-radius: 20px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.025), rgba(0,0,0,.16)),
    repeating-linear-gradient(0deg, transparent 0 49px, rgba(255,255,255,.022) 49px 50px),
    repeating-linear-gradient(90deg, transparent 0 49px, rgba(255,255,255,.022) 49px 50px);
  overflow: hidden;
}

.clc-track-svg { width: 100%; height: 560px; overflow: visible; }
.clc-track-shadow {
  fill: none;
  stroke: rgba(0,0,0,.8);
  stroke-width: 22;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.clc-sector {
  fill: none;
  stroke-width: 10;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: url(#clc-glow);
}
.clc-sector-1 { stroke: var(--clc-blue); }
.clc-sector-2 { stroke: var(--clc-red); }
.clc-sector-3 { stroke: var(--clc-cyan); }
.clc-track-motion-path { fill: none; stroke: transparent; stroke-width: 1; }
.clc-track-car { fill: #fff; stroke: var(--clc-green); stroke-width: 5; filter: url(#clc-glow); }

.clc-stats-panel {
  padding: 28px;
  background: linear-gradient(145deg, rgba(255,255,255,.04), rgba(255,255,255,.012)), var(--clc-panel);
}

.clc-stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.clc-stat-grid article {
  min-height: 112px;
  display: grid;
  align-content: center;
  padding: 16px;
  border: 1px solid var(--clc-border);
  border-radius: 15px;
  background: rgba(255,255,255,.035);
}

.clc-stat-grid span {
  color: var(--clc-muted);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.clc-stat-grid strong {
  margin-top: 7px;
  color: #fff;
  font-size: 29px;
  line-height: 1;
}

.clc-stat-grid small { margin-left: 4px; color: var(--clc-muted); font-size: 13px; }

.clc-elevation-panel {
  padding: 30px clamp(20px, 3vw, 42px);
  border-bottom: 1px solid var(--clc-border);
  background: rgba(255,255,255,.018);
}

.clc-elevation-title {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
}

.clc-elevation-title h2 {
  margin: 6px 0 0;
  color: #fff;
  font-size: clamp(27px, 3vw, 44px);
  letter-spacing: -.035em;
}

.clc-elev-summary { display: flex; flex-wrap: wrap; gap: 10px; }
.clc-elev-summary span {
  padding: 10px 13px;
  border: 1px solid var(--clc-border);
  border-radius: 999px;
  color: var(--clc-muted);
  font-size: 11px;
}
.clc-elev-summary strong { color: #fff; }

.clc-elevation-wrap { position: relative; margin-top: 18px; min-height: 270px; }
.clc-elevation-svg { display: block; width: 100%; height: 270px; overflow: visible; }
.clc-elev-grid { stroke: rgba(255,255,255,.08); stroke-width: 1; stroke-dasharray: 5 7; }
.clc-elev-label { fill: var(--clc-muted); font-size: 11px; }
.clc-elev-line { fill: none; stroke: var(--clc-cyan); stroke-width: 4; filter: drop-shadow(0 0 8px rgba(40,217,232,.55)); }
.clc-elev-cursor { stroke: rgba(255,255,255,.45); stroke-width: 1; stroke-dasharray: 4 4; }
.clc-elev-dot { fill: #fff; stroke: var(--clc-cyan); stroke-width: 4; }
.clc-elev-tooltip {
  position: absolute;
  top: 12px;
  transform: translateX(-50%);
  padding: 8px 11px;
  border-radius: 10px;
  color: #071018;
  background: var(--clc-cyan);
  font-size: 11px;
  font-weight: 900;
  pointer-events: none;
  white-space: nowrap;
}

.clc-info-panel { padding: 28px clamp(20px, 3vw, 42px); }
.clc-tabs {
  width: min(520px, 100%);
  display: flex;
  gap: 6px;
  padding: 5px;
  border: 1px solid var(--clc-border);
  border-radius: 999px;
  background: rgba(255,255,255,.035);
}
.clc-tabs button {
  flex: 1;
  border: 0;
  border-radius: 999px;
  padding: 11px;
  color: var(--clc-muted);
  background: transparent;
  font-weight: 850;
  cursor: pointer;
}
.clc-tabs button.is-active { color: #fff; background: var(--clc-red); }

.clc-tab-panel { margin-top: 22px; }
.clc-overview-copy p, .clc-history { color: #dfe5ee; font-size: 15px; line-height: 1.75; }
.clc-overview-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.clc-overview-tags span {
  padding: 9px 12px;
  border: 1px solid var(--clc-border);
  border-radius: 999px;
  color: var(--clc-muted);
  font-size: 11px;
}

.clc-elevation-head {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.clc-elevation-head > div {
  padding: 15px;
  border: 1px solid var(--clc-border);
  border-radius: 14px;
  background: rgba(255,255,255,.03);
}
.clc-elevation-head span { display: block; color: var(--clc-muted); font-size: 11px; }
.clc-elevation-head strong { display: block; margin-top: 6px; font-size: 24px; }

.clc-related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 24px;
}
.clc-related-grid a {
  min-height: 120px;
  display: grid;
  overflow: hidden;
  border: 1px solid var(--clc-border);
  border-radius: 14px;
  color: #fff !important;
  background: rgba(255,255,255,.03);
  text-decoration: none !important;
}
.clc-related-grid img { width: 100%; height: 92px; object-fit: cover; }
.clc-related-grid strong { padding: 11px; font-size: 13px; }

.clc-primary-link {
  display: inline-flex;
  margin-top: 15px;
  padding: 11px 16px;
  border-radius: 999px;
  color: #071018 !important;
  background: var(--clc-cyan);
  font-weight: 900;
  text-decoration: none !important;
}

.clc-attribution {
  margin: 0;
  padding: 0 clamp(20px, 3vw, 42px) 24px;
  color: var(--clc-muted);
  font-size: 10px;
}

.clc-circuit-rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(140px, 1fr);
  gap: 8px;
  overflow-x: auto;
  padding: 17px;
  border-top: 1px solid var(--clc-border);
  background: rgba(0,0,0,.25);
}

.clc-rail-item {
  min-height: 84px;
  display: grid;
  align-content: center;
  gap: 3px;
  padding: 12px;
  border: 1px solid var(--clc-border);
  border-radius: 13px;
  color: #fff;
  background: rgba(255,255,255,.035);
  text-align: left;
  cursor: pointer;
}
.clc-rail-item span { color: var(--clc-red); font-weight: 950; }
.clc-rail-item small { color: var(--clc-muted); }
.clc-rail-item.is-active { border-color: var(--clc-cyan); background: rgba(40,217,232,.10); transform: translateY(-2px); }

.clc-error button {
  border: 0;
  border-radius: 999px;
  padding: 11px 17px;
  color: #071018;
  background: var(--clc-cyan);
  font-weight: 900;
  cursor: pointer;
}

@media (max-width: 1050px) {
  .clc-dashboard { grid-template-columns: 1fr; }
  .clc-track-panel { border-right: 0; border-bottom: 1px solid var(--clc-border); }
  .clc-circuit-hero { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .clc-app { width: 96vw; margin-left: calc(50% - 48vw); margin-right: calc(50% - 48vw); border-radius: 18px; }
  .clc-circuit-hero { padding: 24px 16px; }
  .clc-circuit-hero h1 { font-size: clamp(40px, 15vw, 64px); }
  .clc-track-panel { padding: 12px; }
  .clc-track-toolbar, .clc-elevation-title { align-items: stretch; flex-direction: column; }
  .clc-track-wrap, .clc-track-svg { min-height: 380px; height: 380px; }
  .clc-stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .clc-elevation-head { grid-template-columns: 1fr; }
  .clc-related-grid { grid-template-columns: 1fr; }
}