:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface2: #21262d;
  --surface3: #2d333b;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #58a6ff;
  --accent2: #f78166;
  --success: #3fb950;

  /* Chart categorical slots — fixed order, assigned by entity, never cycled.
     Validated (dataviz six checks) against surface #161b22 in dark mode:
     worst adjacent CVD dE 8.4, worst adjacent normal-vision dE 19.3, all >= 3:1. */
  --series-1: #3987e5;  /* solo-required power */
  --series-2: #d95926;  /* actual power */
  --series-3: #199e70;  /* W' balance */
  --series-4: #c98500;  /* speed */
  --series-5: #d55181;  /* heart rate */

  /* Diverging poles for draft ratio: sheltered <-> neutral <-> exposed */
  --div-cool: #6da7ec;
  --div-mid: #4a4a47;
  --div-warm: #e66767;

  /* Status — reserved, never reused as a series colour */
  --st-good: #0ca30c;
  --st-warn: #fab219;
  --st-serious: #ec835a;
  --st-critical: #d03b3b;

  /* Chart chrome */
  --grid: #2c313a;
  --axis: #3a424d;

  --radius: 6px;
  --sidebar-width: 290px;
  --rail-width: 300px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.5;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Header ─────────────────────────────────────────────────────────────── */

.site-header {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 20px;
  height: 48px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.site-title {
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.3px;
}
.site-title span { color: var(--accent); }

.site-nav { display: flex; gap: 4px; }
.site-nav a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 4px 10px;
  border-radius: var(--radius);
  font-size: 13px;
}
.site-nav a:hover, .site-nav a.active { color: var(--text); background: var(--surface2); }

.header-spacer { flex: 1; }

.settings-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
}
.settings-btn:hover { color: var(--text); background: var(--surface2); }

/* ── App layout ─────────────────────────────────────────────────────────── */

main { display: flex; flex-direction: column; flex: 1; overflow: hidden; }

.app-wrap { display: flex; flex: 1; overflow: hidden; }

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-right: 1px solid var(--border);
}

.center-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.rail {
  width: var(--rail-width);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-left: 1px solid var(--border);
}

.scroll-y { flex: 1; overflow-y: auto; }

/* ── Sidebar sections ───────────────────────────────────────────────────── */

.sidebar-section { border-bottom: 1px solid var(--border); padding: 10px 12px; }

.sidebar-section-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.hint { font-size: 11.5px; color: var(--text-muted); line-height: 1.45; }
.hint a { color: var(--accent); }

/* ── Buttons & inputs ───────────────────────────────────────────────────── */

.btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius);
  padding: 6px 10px;
  font-size: 12.5px;
  cursor: pointer;
  font-family: inherit;
}
.btn:hover:not(:disabled) { border-color: var(--accent); }
.btn:disabled { opacity: 0.45; cursor: default; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #04121f; font-weight: 600; }
.btn-primary:hover:not(:disabled) { filter: brightness(1.08); }
.btn-sm { padding: 3px 8px; font-size: 11.5px; }
.btn-row { display: flex; gap: 6px; flex-wrap: wrap; }

input[type=text], input[type=password], input[type=number], input[type=date], select {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 5px 8px;
  border-radius: var(--radius);
  font-size: 12.5px;
  font-family: inherit;
  outline: none;
}
input:focus, select:focus { border-color: var(--accent); }
input::placeholder { color: var(--text-muted); }

input[type=range] {
  width: 100%;
  accent-color: var(--accent);
  background: transparent;
}

.dropzone {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 14px 10px;
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
  cursor: pointer;
  transition: border-color .12s, color .12s;
}
.dropzone:hover, .dropzone.is-over { border-color: var(--accent); color: var(--text); }
.dropzone b { color: var(--text); }

/* ── Ride list ──────────────────────────────────────────────────────────── */

.ride-list { padding: 6px; }

.ride-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 8px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  margin-bottom: 3px;
}
.ride-item:hover { background: var(--surface2); }
.ride-item.active { background: var(--surface2); border-color: var(--accent); }

.ride-swatch { width: 3px; align-self: stretch; border-radius: 2px; background: var(--border); flex-shrink: 0; }
.ride-item.active .ride-swatch { background: var(--accent); }

.ride-body { min-width: 0; flex: 1; }
.ride-name {
  font-size: 12.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ride-meta { font-size: 11px; color: var(--text-muted); font-variant-numeric: tabular-nums; }

.ride-cmp {
  flex-shrink: 0;
  width: 14px; height: 14px;
  accent-color: var(--accent);
  cursor: pointer;
}

.ride-del {
  background: none; border: none; color: var(--text-muted);
  cursor: pointer; font-size: 15px; line-height: 1; padding: 0 2px;
  opacity: 0; flex-shrink: 0;
}
.ride-item:hover .ride-del { opacity: 1; }
.ride-del:hover { color: var(--accent2); }

.list-empty { padding: 18px 12px; text-align: center; color: var(--text-muted); font-size: 12px; }

/* ── Tabs ───────────────────────────────────────────────────────────────── */

.tabbar {
  display: flex;
  gap: 2px;
  padding: 0 14px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.tabbar::-webkit-scrollbar { display: none; }

.tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  padding: 10px 12px;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
  font-family: inherit;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--text); border-bottom-color: var(--accent); }

.panels { flex: 1; overflow-y: auto; padding: 14px; }
.panel { display: none; }
.panel.active { display: block; }

/* ── Cards ──────────────────────────────────────────────────────────────── */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  margin-bottom: 14px;
}

.card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 4px;
}

.card-title { font-size: 13px; font-weight: 600; letter-spacing: -0.1px; }
.card-sub { font-size: 11.5px; color: var(--text-muted); }
.card-note { font-size: 11.5px; color: var(--text-muted); margin-top: 8px; }

.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 14px; }
.card-grid > .card { margin-bottom: 0; }

/* ── Stat tiles ─────────────────────────────────────────────────────────── */

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
}
.stat-val { font-size: 24px; font-weight: 600; letter-spacing: -0.5px; line-height: 1.15; }
.stat-val .unit { font-size: 13px; font-weight: 400; color: var(--text-muted); margin-left: 2px; }
.stat-label {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-top: 2px;
}
.stat-sub { font-size: 11px; color: var(--text-muted); margin-top: 3px; font-variant-numeric: tabular-nums; }

/* ── Charts ─────────────────────────────────────────────────────────────── */

.chart-wrap { position: relative; }
canvas.chart { display: block; width: 100%; cursor: crosshair; }

.legend {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 11.5px;
  color: var(--text-muted);
  margin-top: 8px;
}
.legend-item { display: flex; align-items: center; gap: 5px; }
.legend-key { width: 10px; height: 10px; border-radius: 2px; flex-shrink: 0; }
.legend-key.line { height: 2px; border-radius: 1px; width: 14px; }
.legend-key.dash {
  height: 0; width: 14px; border-radius: 0;
  border-top: 2px dashed currentColor; background: none !important;
}

.tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--surface3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 9px;
  font-size: 11.5px;
  line-height: 1.5;
  white-space: nowrap;
  box-shadow: 0 4px 14px rgba(0,0,0,.45);
  z-index: 20;
  display: none;
  font-variant-numeric: tabular-nums;
}
.tooltip .tt-title { font-weight: 600; margin-bottom: 2px; }
.tooltip .tt-row { display: flex; align-items: center; gap: 6px; justify-content: space-between; }
.tooltip .tt-key { width: 8px; height: 8px; border-radius: 2px; flex-shrink: 0; }
.tooltip .tt-name { color: var(--text-muted); margin-right: 10px; }

/* ── Tables ─────────────────────────────────────────────────────────────── */

.table-scroll { overflow-x: auto; }

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
}
table.data th, table.data td { text-align: right; padding: 5px 8px; white-space: nowrap; }
table.data th:first-child, table.data td:first-child { text-align: left; }
table.data thead th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--surface);
}
table.data tbody tr { border-bottom: 1px solid var(--border); }
table.data tbody tr:last-child { border-bottom: none; }
table.data tbody tr:hover { background: var(--surface2); }
table.data td.dim { color: var(--text-muted); }
.table-empty { text-align: center; color: var(--text-muted); padding: 20px; font-size: 12px; }

.tag {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 20px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.2px;
}
.tag-cool { background: rgba(109,167,236,.16); color: var(--div-cool); }
.tag-warm { background: rgba(230,103,103,.16); color: var(--div-warm); }
.tag-mid  { background: var(--surface3); color: var(--text-muted); }

/* ── Rail (rider & conditions) ──────────────────────────────────────────── */

.rail-section { border-bottom: 1px solid var(--border); padding: 10px 12px; }

.field {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 6px;
  margin-top: 9px;
}
.field:first-of-type { margin-top: 4px; }
.field label { font-size: 11.5px; color: var(--text-muted); }
.field .field-val { font-size: 12px; font-variant-numeric: tabular-nums; }
.field .field-input { grid-column: 1 / -1; }

.check {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  cursor: pointer;
  margin-top: 8px;
}
.check input { accent-color: var(--accent); width: 14px; height: 14px; cursor: pointer; }

.seg {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.seg button {
  flex: 1;
  background: var(--surface2);
  border: none;
  border-right: 1px solid var(--border);
  color: var(--text-muted);
  padding: 5px 4px;
  font-size: 11.5px;
  cursor: pointer;
  font-family: inherit;
}
.seg button:last-child { border-right: none; }
.seg button.active { background: var(--surface3); color: var(--text); }
.seg button:disabled { opacity: .4; cursor: default; }

.status {
  font-size: 11.5px;
  border-radius: var(--radius);
  padding: 6px 8px;
  margin-top: 8px;
  line-height: 1.45;
}
.status-ok   { background: rgba(12,163,12,.12);  color: #7bd97b; }
.status-warn { background: rgba(250,178,25,.12); color: #f0c96a; }
.status-err  { background: rgba(208,59,59,.14);  color: #f08a8a; }
.status-info { background: var(--surface2); color: var(--text-muted); }

/* ── Replay controls ────────────────────────────────────────────────────── */

.replay-bar { display: flex; align-items: center; gap: 10px; margin-top: 10px; }
.replay-bar input[type=range] { flex: 1; }
.replay-clock { font-size: 12px; color: var(--text-muted); font-variant-numeric: tabular-nums; min-width: 96px; text-align: right; }

/* ── Settings drawer ────────────────────────────────────────────────────── */

.modal { position: fixed; inset: 0; z-index: 100; }
.modal-overlay { position: absolute; inset: 0; background: rgba(1,4,9,.7); }
.drawer {
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: min(420px, 100%);
  background: var(--surface);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}
.drawer-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}
.drawer-close {
  background: none; border: none; color: var(--text-muted);
  font-size: 22px; line-height: 1; cursor: pointer;
}
.drawer-close:hover { color: var(--text); }
.drawer-body { padding: 16px; overflow-y: auto; }

.settings-section { margin-bottom: 22px; }
.settings-section-title {
  font-size: 11px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.6px; color: var(--text-muted); margin-bottom: 8px;
}
.settings-row { margin-top: 10px; }
.settings-row label { display: block; font-size: 12px; color: var(--text-muted); margin-bottom: 3px; }

/* ── Cookie banner ──────────────────────────────────────────────────────── */

.cookie-banner {
  position: fixed;
  left: 16px; right: 16px; bottom: 16px;
  max-width: 560px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  z-index: 90;
  box-shadow: 0 8px 28px rgba(0,0,0,.5);
}
.cookie-text { font-size: 12px; color: var(--text-muted); }
.cookie-text a { color: var(--accent); }
.cookie-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 10px; }

/* ── Static pages ───────────────────────────────────────────────────────── */

.prose {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 20px 60px;
  overflow-y: auto;
  flex: 1;
}
.prose h1 { font-size: 22px; margin-bottom: 6px; letter-spacing: -0.4px; }
.prose h2 { font-size: 15px; margin: 26px 0 8px; }
.prose h3 { font-size: 13px; margin: 18px 0 6px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .5px; }
.prose p, .prose li { color: var(--text-muted); font-size: 13.5px; margin-bottom: 10px; }
.prose li { margin-bottom: 5px; }
.prose ul, .prose ol { padding-left: 20px; margin-bottom: 12px; }
.prose a { color: var(--accent); }
.prose code {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 12px;
  color: var(--text);
}
.prose .lead { color: var(--text); font-size: 15px; }
.prose table.data { margin-bottom: 14px; }

/* ── Mobile ─────────────────────────────────────────────────────────────── */

.mobile-nav { display: none; }

@media (max-width: 1180px) {
  :root { --rail-width: 260px; --sidebar-width: 250px; }
}

@media (max-width: 900px) {
  .app-wrap > .sidebar, .app-wrap > .rail, .app-wrap > .center-area { display: none; }
  .app-wrap[data-panel="rides"]    > .sidebar,
  .app-wrap[data-panel="analysis"] > .center-area,
  .app-wrap[data-panel="setup"]    > .rail { display: flex; width: 100%; border: none; }

  .mobile-nav {
    display: flex;
    border-top: 1px solid var(--border);
    background: var(--surface);
    flex-shrink: 0;
  }
  .mobile-tab {
    flex: 1;
    background: none;
    border: none;
    border-top: 2px solid transparent;
    color: var(--text-muted);
    padding: 10px;
    font-size: 12.5px;
    cursor: pointer;
    font-family: inherit;
  }
  .mobile-tab.active { color: var(--text); border-top-color: var(--accent); }

  .card-grid { grid-template-columns: 1fr; }
}

/* ── Privacy callout ────────────────────────────────────────────────────── */

.privacy-callout {
  background: rgba(12, 163, 12, .07);
  border: 1px solid rgba(12, 163, 12, .28);
  border-radius: var(--radius);
  padding: 11px 13px;
  margin-bottom: 14px;
}
.privacy-callout-title {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  font-weight: 600;
  color: #7bd97b;
  margin-bottom: 6px;
}
.privacy-callout-title svg { flex-shrink: 0; }
.privacy-callout p {
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.privacy-callout p:last-child { margin-bottom: 0; }
.privacy-callout b { color: var(--text); }

/* ── Filter chips ───────────────────────────────────────────────────────── */

.chips { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 7px; }

.chip {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 20px;
  padding: 2px 9px;
  font-size: 11px;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
  line-height: 1.6;
}
.chip:hover { border-color: var(--accent); color: var(--text); }
.chip.on { background: rgba(88,166,255,.16); border-color: var(--accent); color: var(--accent); font-weight: 600; }
.chip .chip-count { opacity: .6; margin-left: 3px; }

.ride-badge {
  display: inline-block;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: .4px;
  text-transform: uppercase;
  padding: 0 4px;
  border-radius: 3px;
  background: rgba(250,178,25,.18);
  color: #f0c96a;
  margin-right: 4px;
  vertical-align: 1px;
}
.ride-warn { color: var(--accent2); }

.ride-refresh {
  background: none; border: none; color: var(--text-muted);
  cursor: pointer; font-size: 13px; line-height: 1; padding: 0 2px;
  opacity: 0; flex-shrink: 0;
}
.ride-item:hover .ride-refresh { opacity: 1; }
.ride-refresh:hover { color: var(--accent); }
.ride-refresh.spinning { opacity: 1; animation: cl-spin 0.9s linear infinite; }
@keyframes cl-spin { to { transform: rotate(360deg); } }

/* ── Load by ID ─────────────────────────────────────────────────────────── */

.icu-byid { margin-top: 10px; border-top: 1px solid var(--border); padding-top: 8px; }
.icu-byid summary {
  font-size: 11.5px;
  color: var(--text-muted);
  cursor: pointer;
  list-style: none;
}
.icu-byid summary::-webkit-details-marker { display: none; }
.icu-byid summary::before { content: '▸ '; }
.icu-byid[open] summary::before { content: '▾ '; }
.icu-byid summary:hover { color: var(--text); }

/* ── Loading overlay ────────────────────────────────────────────────────── */

.busy-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  /* Heavy enough that the app underneath is plainly out of action. A timid
     scrim reads as a rendering artefact; this reads as "wait". */
  background: rgba(6, 9, 13, .86);
  backdrop-filter: blur(3px) saturate(.55);
  animation: cl-fade .14s ease-out;
}
.busy-overlay[hidden] { display: none; }

@keyframes cl-fade { from { opacity: 0; } to { opacity: 1; } }

.busy-card {
  display: flex;
  align-items: center;
  gap: 15px;
  background: var(--surface);
  border: 1px solid var(--accent);
  border-radius: 10px;
  padding: 20px 26px;
  box-shadow: 0 16px 52px rgba(0, 0, 0, .7), 0 0 0 1px rgba(88, 166, 255, .18);
  min-width: 260px;
  animation: cl-rise .16s ease-out;
}

@keyframes cl-rise {
  from { transform: translateY(5px); opacity: 0; }
  to   { transform: none; opacity: 1; }
}

.busy-spinner {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  border: 2.5px solid var(--surface3);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: cl-spin 0.75s linear infinite;
}

.busy-msg { font-size: 13.5px; font-weight: 600; }
.busy-sub { font-size: 11.5px; color: var(--text-muted); margin-top: 2px; }

/* Respect a reduced-motion preference: keep the feedback, drop the spin. */
@media (prefers-reduced-motion: reduce) {
  .busy-spinner { animation: none; border-top-color: var(--accent); opacity: .8; }
  .busy-overlay, .busy-card { animation: none; }
  .ride-refresh.spinning { animation: none; }
}

/* ── Crop prompt ────────────────────────────────────────────────────────── */

.crop-prompt {
  background: var(--surface);
  border: 1px solid var(--st-warn);
  border-left-width: 3px;
  border-radius: var(--radius);
  padding: 12px 14px;
  margin-bottom: 14px;
}
.crop-prompt-title { font-size: 13px; font-weight: 600; margin-bottom: 4px; }
.crop-prompt p { font-size: 12px; color: var(--text-muted); line-height: 1.5; margin-bottom: 10px; }
.crop-prompt .btn-row { gap: 8px; }
.crop-active {
  background: rgba(88,166,255,.08);
  border-color: var(--accent);
}
.crop-active .crop-prompt-title { color: var(--accent); }

.crop-nudge {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.crop-nudge-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-muted);
  margin-right: 2px;
}
.crop-nudge-count {
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  padding: 0 6px;
  min-width: 116px;
  text-align: center;
}

.src { font-size: 10px; opacity: .65; font-style: italic; }