:root {
  --page: #E9ECE7;
  --surface: #FAFAF8;
  --ink: #111111;
  --ink-2: #3A3A3A;
  --muted: #5B6159;
  --rule: #D3D7D0;
  --grid: #DCE0D9;
  --accent: #566B57;
  /* Chart series, validated for colorblind separation on this surface */
  --s1: #3F8650;
  --s2: #4766A9;
  --s1-wash: rgba(63, 134, 80, 0.16);
  --focus: #566B57;
  /* Gradient bands (ordinal blue ramp, clears 2:1 on the surface), downhill neutral */
  --g0: #86B6EF; --g1: #5598E7; --g2: #2A78D6; --g3: #1C5CAB; --g4: #104281; --g-down: #C9CEC6;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --page: #111111;
    --surface: #181A18;
    --ink: #E9ECE7;
    --ink-2: #C5CBC3;
    --muted: #8F968D;
    --rule: #2B2E2B;
    --grid: #232623;
    --accent: #A8BCA8;
    --s1: #4C9660;
    --s2: #6683CF;
    --s1-wash: rgba(76, 150, 96, 0.22);
    --focus: #A8BCA8;
    --g0: #184F95; --g1: #256ABF; --g2: #3987E5; --g3: #6DA7EC; --g4: #9EC5F4; --g-down: #3A3F39;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 400 15px/1.5 Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-feature-settings: "cv11", "ss01";
}
a { color: inherit; }
button, input { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 2px; }
[hidden] { display: none !important; }

/* Top bar */
.bar {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 14px max(16px, calc((100vw - 1200px) / 2));
  border-bottom: 1px solid var(--rule);
}
.brand img { display: block; height: 22px; width: auto; }
.bar nav { display: flex; gap: 24px; flex: 1; }
.bar nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}
.bar nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }
.bar nav a:hover { color: var(--ink); }
button.quiet { background: none; border: 0; color: var(--muted); cursor: pointer; padding: 6px 0; }
button.quiet:hover { color: var(--ink); }

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 16px 80px;
}
main:focus { outline: none; }
h1, h2, h3 { font-weight: 600; margin: 0; letter-spacing: -0.01em; }
h2 { font-size: 17px; }
.sub { color: var(--muted); font-size: 14px; }
.num { font-variant-numeric: tabular-nums; }

/* Overview: headline */
.headline { display: grid; grid-template-columns: auto 1fr; align-items: end; gap: 8px 40px; margin-bottom: 8px; }
.hero { display: flex; align-items: baseline; gap: 14px; }
.hero .value { font-size: clamp(56px, 9vw, 88px); font-weight: 600; line-height: 0.9; letter-spacing: -0.04em; }
.hero .label { font-size: 17px; color: var(--muted); }
.read { max-width: 46ch; color: var(--ink-2); font-size: 16px; padding-bottom: 6px; }
.read strong { color: var(--ink); font-weight: 600; }

.controls { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin: 28px 0 8px; }
.seg { display: inline-flex; border: 1px solid var(--rule); border-radius: 8px; padding: 2px; background: var(--surface); }
.seg button {
  border: 0; background: none; padding: 5px 12px; border-radius: 6px; cursor: pointer;
  color: var(--muted); font-size: 14px;
}
.seg button[aria-pressed="true"] { background: var(--page); color: var(--ink); font-weight: 500; }

/* Sections */
section.block { padding: 28px 0; border-top: 1px solid var(--rule); }
section.block:first-of-type { border-top: 0; }
.block-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 14px; flex-wrap: wrap; }
.block-head .sub { margin-left: auto; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.two > section.block { border-top: 0; padding-top: 0; }
.split { border-top: 1px solid var(--rule); padding-top: 28px; }

/* Facts row (totals, ride facts) */
.facts { display: flex; flex-wrap: wrap; gap: 12px 40px; margin: 0; }
.facts div { min-width: 0; }
.facts dt { color: var(--muted); font-size: 13px; }
.facts dd { margin: 2px 0 0; font-size: 22px; font-weight: 600; letter-spacing: -0.01em; }
.facts dd small { font-size: 14px; font-weight: 400; color: var(--muted); margin-left: 3px; }
.period { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px 48px; }
.period h3 { font-size: 13px; font-weight: 500; color: var(--muted); margin-bottom: 6px; }
.period .facts { gap: 4px 28px; }
.period .facts dd { font-size: 19px; }

/* Charts */
.chart { position: relative; }
.chart svg { display: block; width: 100%; overflow: visible; }
.chart .gridline { stroke: var(--grid); stroke-width: 1; shape-rendering: crispEdges; }
.chart .baseline { stroke: var(--rule); stroke-width: 1; shape-rendering: crispEdges; }
.chart .tick { fill: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.chart .cross { stroke: var(--ink-2); stroke-width: 1; shape-rendering: crispEdges; }
.chart .hit { fill: transparent; cursor: crosshair; }
.chart .bar-hit { fill: transparent; cursor: default; }
.chart .bar.on { opacity: 0.75; }
.chart .endlabel { fill: var(--ink-2); font-size: 12px; font-weight: 500; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 13px; color: var(--ink-2); margin: 0 0 8px; padding: 0; list-style: none; }
.legend li { display: inline-flex; align-items: center; gap: 7px; }
.key-line { width: 16px; height: 2px; border-radius: 1px; display: inline-block; }
.key-area { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }
.tip {
  position: absolute; pointer-events: none; z-index: 5;
  background: var(--surface); border: 1px solid var(--rule); border-radius: 8px;
  padding: 8px 10px; font-size: 13px; min-width: 132px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}
.tip .t-head { color: var(--muted); margin-bottom: 4px; }
.tip .t-row { display: flex; align-items: center; gap: 8px; }
.tip .t-row b { font-weight: 600; font-variant-numeric: tabular-nums; }
.tip .t-row span:last-child { color: var(--muted); }
.table-toggle { font-size: 13px; }
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 8px; }
.data-table caption { text-align: left; color: var(--muted); padding-bottom: 6px; }
.data-table th, .data-table td { text-align: right; padding: 5px 8px; border-bottom: 1px solid var(--rule); font-variant-numeric: tabular-nums; }
.data-table th:first-child, .data-table td:first-child { text-align: left; }
.data-table th { color: var(--muted); font-weight: 500; }
.table-wrap { max-height: 320px; overflow: auto; }

/* Ride list */
.rides { width: 100%; border-collapse: collapse; }
.rides th { text-align: right; font-weight: 500; font-size: 13px; color: var(--muted); padding: 8px 10px; border-bottom: 1px solid var(--rule); white-space: nowrap; }
.rides td { text-align: right; padding: 11px 10px; border-bottom: 1px solid var(--rule); font-variant-numeric: tabular-nums; white-space: nowrap; }
.rides th:nth-child(-n+2), .rides td:nth-child(-n+2) { text-align: left; }
.rides td.name { white-space: normal; width: 100%; }
.rides td.name a { text-decoration: none; font-weight: 500; }
.rides td.name a:hover { text-decoration: underline; text-underline-offset: 3px; }
.rides td.date { color: var(--muted); }
.rides .where { color: var(--muted); font-size: 13px; margin-left: 8px; font-weight: 400; }
.rides tbody tr:hover { background: var(--surface); }
.more { margin-top: 20px; }
button.plain {
  border: 1px solid var(--rule); background: var(--surface); border-radius: 8px;
  padding: 8px 14px; cursor: pointer;
}
button.plain:hover { border-color: var(--muted); }

/* Ride detail */
.ride-facts { margin-top: 20px; }
.crumb { text-decoration: none; color: var(--muted); font-size: 14px; }
.crumb:hover { color: var(--ink); }
.ride-title { font-size: clamp(26px, 4vw, 36px); letter-spacing: -0.02em; margin: 6px 0 4px; }
.ride-top { display: grid; grid-template-columns: minmax(220px, 300px) 1fr; gap: 40px; align-items: center; margin-top: 28px; }
.route svg { width: 100%; height: auto; display: block; }
.route .path { fill: none; stroke: var(--ink); stroke-width: 2.25; stroke-linejoin: round; stroke-linecap: round; vector-effect: non-scaling-stroke; }
.route .start { fill: var(--s1); stroke: var(--page); stroke-width: 2; }
.route .finish { fill: var(--ink); stroke: var(--page); stroke-width: 2; }
.route-none { color: var(--muted); font-size: 14px; border: 1px dashed var(--rule); border-radius: 8px; padding: 32px 16px; text-align: center; }

/* Login */
.passkey-btn {
  width: 100%; padding: 12px; border: 0; border-radius: 8px; cursor: pointer;
  background: var(--ink); color: var(--page); font-weight: 600; font-size: 16px;
}
.passkey-btn:disabled { opacity: 0.6; cursor: progress; }
.login .or { color: var(--muted); font-size: 14px; margin: 18px 0 8px; text-align: center; }
.login .error { margin-top: 12px; text-align: left; }
.login code, .settings code { font-size: 13px; background: var(--surface); padding: 1px 5px; border-radius: 4px; border: 1px solid var(--rule); }
/* When the passkey button leads, the password form steps back */
.passkey-btn:not([hidden]) ~ form button { background: var(--surface); color: var(--ink); border: 1px solid var(--rule); }

/* Settings */
.settings { max-width: 720px; }
.settings section.block { padding: 24px 0; }
.settings p { color: var(--ink-2); margin: 6px 0 14px; max-width: 60ch; }
.keys { list-style: none; margin: 0 0 16px; padding: 0; border-top: 1px solid var(--rule); }
.keys li { display: flex; align-items: center; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--rule); flex-wrap: wrap; }
.keys .k-name { font-weight: 500; }
.keys .k-meta { color: var(--muted); font-size: 13px; flex: 1; min-width: 200px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.row input {
  padding: 8px 10px; border: 1px solid var(--rule); border-radius: 8px; background: var(--surface); min-width: 220px;
}
button.primary { border: 0; background: var(--ink); color: var(--page); border-radius: 8px; padding: 9px 14px; cursor: pointer; font-weight: 600; }
button.primary:disabled, button.plain:disabled { opacity: 0.55; cursor: not-allowed; }
button.danger { color: #A33A2B; }
@media (prefers-color-scheme: dark) { button.danger { color: #F08C7A; } }
.status { font-size: 14px; margin-top: 10px; }
.status.ok { color: var(--accent); }
.state { font-weight: 600; }
.login { max-width: 340px; margin: 12vh auto 0; text-align: center; }
.login-mark { display: block; margin: 0 auto 20px; }
.login h1 { font-size: 22px; margin-bottom: 20px; }
.login form { text-align: left; display: grid; gap: 8px; }
.login label { font-size: 14px; color: var(--ink-2); }
.login input {
  padding: 11px 12px; border: 1px solid var(--rule); border-radius: 8px; background: var(--surface);
}
.login input:focus-visible { outline-offset: 0; }
.login button {
  margin-top: 8px; padding: 11px 12px; border: 0; border-radius: 8px; cursor: pointer;
  background: var(--ink); color: var(--page); font-weight: 600;
}
.login button:disabled { opacity: 0.6; cursor: progress; }
.error { color: #A33A2B; font-size: 14px; margin: 0; }
@media (prefers-color-scheme: dark) { .error { color: #F08C7A; } }

.empty { color: var(--muted); padding: 24px 0; }
.loading { opacity: 0.55; transition: opacity 0.2s; }

/* Courses */
a.button { display: inline-block; text-decoration: none; }
a.button.primary { background: var(--ink); color: var(--page); border-radius: 8px; padding: 10px 16px; font-weight: 600; }
a.button.primary:hover { opacity: 0.9; }
.title-row { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.rename input { font-size: 20px; min-width: min(420px, 100%); }
.actions { margin-top: 22px; }
.dropzone { border: 1.5px dashed var(--rule); border-radius: 12px; padding: 22px 20px; margin: 8px 0 28px; background: var(--surface); }
.dropzone.over { border-color: var(--accent); }
.dropzone p { margin: 0; }
.dropzone p + p { margin-top: 6px; }
.dropzone .sub { color: var(--muted); font-size: 14px; }
.upload-log { list-style: none; margin: 12px 0 0; padding: 0; font-size: 14px; }
.upload-log li { padding: 3px 0; color: var(--ink-2); }
.upload-log li.ok::before { content: '✓ '; color: var(--accent); font-weight: 600; }
.upload-log li.bad { color: #A33A2B; }
@media (prefers-color-scheme: dark) { .upload-log li.bad { color: #F08C7A; } }
.predict-in label { color: var(--ink-2); font-size: 14px; }
.predict-in label.gap, label.gap { margin-left: 14px; }
.predict-in input { min-width: 0; width: 7em; padding: 8px 10px; border: 1px solid var(--rule); border-radius: 8px; background: var(--surface); font: inherit; }
.predict .facts { margin-top: 18px; }
.predict .sub { color: var(--muted); font-size: 14px; max-width: 70ch; }
.predict .fine { font-size: 13px; }
.notice { border-left: 3px solid var(--accent); background: var(--surface); padding: 12px 16px; border-radius: 0 8px 8px 0; margin: 0 0 18px; }
.notice p { margin: 0 0 10px; color: var(--ink-2); }
.notice input { min-width: 0; width: 8em; }
.climbs td:nth-child(n+2), .climbs th:nth-child(n+2) { text-align: right; }
.table-scroll { overflow-x: auto; }
.plain-list { list-style: none; padding: 0; margin: 0; }
.plain-list li { padding: 6px 0; border-bottom: 1px solid var(--rule); color: var(--ink-2); }
.danger-zone { margin-top: 40px; }
.route .path.climb { stroke: var(--g2); stroke-width: 4; }
.route .you { fill: #E8590C; stroke: var(--page); stroke-width: 2.5; }

/* Elevation profile */
.chart.profile .legend { margin-bottom: 6px; }
.chart .key-area.g-down { background: var(--g-down); }
.chart .key-area.g0 { background: var(--g0); } .chart .key-area.g1 { background: var(--g1); }
.chart .key-area.g2 { background: var(--g2); } .chart .key-area.g3 { background: var(--g3); }
.chart .key-area.g4 { background: var(--g4); }
/* Each band is stroked in its own color so neighbouring shapes meet without hairline gaps. */
.chart .band { stroke-width: 0.8; }
.chart .band.g-down { fill: var(--g-down); stroke: var(--g-down); } .chart .band.g0 { fill: var(--g0); stroke: var(--g0); }
.chart .band.g1 { fill: var(--g1); stroke: var(--g1); } .chart .band.g2 { fill: var(--g2); stroke: var(--g2); }
.chart .band.g3 { fill: var(--g3); stroke: var(--g3); } .chart .band.g4 { fill: var(--g4); stroke: var(--g4); }
.chart .ele-line { fill: none; stroke: var(--ink); stroke-width: 1.5; stroke-linejoin: round; }
.chart .climb-span { stroke: var(--muted); stroke-width: 1; }
.chart .climb-num { fill: var(--ink-2); font-size: 11px; font-weight: 600; }
.chart .done { fill: var(--page); opacity: 0.55; }
.chart .you { fill: #E8590C; stroke: var(--page); stroke-width: 2.5; }

/* Rider settings */
.fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 28px; margin: 6px 0 18px; }
.field { display: grid; gap: 4px; align-content: start; }
.field label { font-size: 14px; font-weight: 500; }
.field input, .field select { padding: 8px 10px; border: 1px solid var(--rule); border-radius: 8px; background: var(--surface); font: inherit; color: var(--ink); max-width: 100%; }
.field .sub { color: var(--muted); font-size: 13px; }
@media (max-width: 600px) { .fields { grid-template-columns: 1fr; } }

/* Ride mode */
.ride-mode { display: grid; gap: 18px; }
.rm-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip { font-size: 13px; padding: 4px 10px; border-radius: 999px; border: 1px solid var(--rule); color: var(--muted); background: var(--surface); }
.chip[data-state="connected"] { color: var(--ink); border-color: var(--accent); }
.chip[data-state="connected"]::before { content: '● '; color: var(--s1); }
.chip[data-state="reconnecting"] { color: #A35F00; border-color: #D9A441; }
.setup { background: var(--surface); border: 1px solid var(--rule); border-radius: 12px; padding: 16px 18px; }
.setup > p { margin: 0 0 12px; color: var(--ink-2); max-width: 70ch; }
.setup .error { margin-top: 10px; }
.tiles { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 10px; }
.tile { background: var(--surface); border: 1px solid var(--rule); border-radius: 12px; padding: 10px 14px; display: grid; gap: 2px; min-width: 0; }
.tile .l { font-size: 13px; color: var(--muted); }
.tile .vv { font-size: 26px; font-weight: 600; letter-spacing: -0.01em; font-variant-numeric: tabular-nums; white-space: nowrap; }
.tile .vv small { font-size: 14px; font-weight: 400; color: var(--muted); margin-left: 4px; }
.tile.hero { grid-column: span 2; }
.tile.hero .vv { font-size: 52px; line-height: 1.05; }
.tile[data-band] { border-left: 6px solid var(--g-down); }
.tile[data-band="0"] { border-left-color: var(--g0); } .tile[data-band="1"] { border-left-color: var(--g1); }
.tile[data-band="2"] { border-left-color: var(--g2); } .tile[data-band="3"] { border-left-color: var(--g3); }
.tile[data-band="4"] { border-left-color: var(--g4); }
.climb-now { font-size: 15px; color: var(--ink-2); display: flex; align-items: center; gap: 6px 12px; flex-wrap: wrap; }
.climb-now strong { color: var(--ink); }
.climb-now .bar { flex: 1 1 160px; height: 6px; background: var(--grid); border-radius: 3px; overflow: hidden; min-width: 120px; }
.climb-now .fill { display: block; height: 100%; background: var(--g2); }
.rm-controls button.big { font-size: 17px; padding: 12px 26px; }
.rm-controls select { padding: 6px 8px; border: 1px solid var(--rule); border-radius: 8px; background: var(--surface); color: var(--ink); font: inherit; }
.demo-ctl { display: flex; gap: 8px; align-items: center; }
.summary { background: var(--surface); border: 1px solid var(--rule); border-radius: 12px; padding: 18px 20px; display: grid; gap: 14px; }
.summary h2 { margin: 0; }
.summary label { font-size: 14px; color: var(--ink-2); display: inline-flex; gap: 6px; align-items: center; }
@media (max-width: 860px) {
  .tiles { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .tile.hero { grid-column: span 1; }
  .tile.hero .vv { font-size: 34px; }
}

@media (max-width: 860px) {
  .two { grid-template-columns: 1fr; gap: 0; }
  .two > section.block + section.block { border-top: 1px solid var(--rule); padding-top: 28px; }
  .headline { grid-template-columns: 1fr; }
  .period { grid-template-columns: 1fr; gap: 20px; }
  .ride-top { grid-template-columns: 1fr; gap: 24px; }
  .route { max-width: 280px; }
  .rides .hide-sm, .climbs .hide-sm { display: none; }
}
@media (max-width: 520px) {
  .block-head .sub { margin-left: 0; flex-basis: 100%; }
  /* Brand and Sign out on the first line, the four sections on their own line below. */
  .bar { gap: 6px 18px; flex-wrap: wrap; }
  .bar nav { gap: 18px; order: 3; flex-basis: 100%; }
  .bar #signout { margin-left: auto; white-space: nowrap; }
  main { padding-top: 24px; }
  .facts { gap: 10px 24px; }
  .facts dd { font-size: 19px; }
  .rides td, .rides th { padding-left: 6px; padding-right: 6px; }
}
@media (prefers-reduced-motion: no-preference) {
  .ridge-in { animation: rise 0.9s cubic-bezier(.2, .7, .2, 1) both; }
  @keyframes rise { from { clip-path: inset(0 100% 0 0); } to { clip-path: inset(0 0 0 0); } }
}