/* Wind Watch — web (HANDOFF §4 tokens, §9 layout, §6.4 chart notes) */

/* --- Tokens: light column (default) --------------------------------------- */
:root {
  color-scheme: light;
  --ground: #F4F5F7;
  --card: #FFFFFF;
  --hairline: #D9DDE3;
  --ink-primary: #0B0E12;
  --ink-body: #3A414B;
  --ink-secondary: #5F6975;
  --ink-old: #7A8390;
  --ink-disabled: #A0A8B2;
  --trust-amber: #B86E00;
  --sun: #E08A00;

  --bft-calm: #8A97A6;
  --bft-2: #2A86C4;
  --bft-3: #1E9E80;
  --bft-4: #5FA82E;
  --bft-5: #C9A800;
  --bft-6: #E07F12;
  --bft-7: #D6451A;
  --bft-8: #C7154B;
  --bft-9: #8C1FB3;
  --bft-10: #1B1B1F;

  /* day shading: light = black 0 % day, 8 % night */
  --shade-day-opacity: 0;
  --shade-night-opacity: 0.08;
  --chip-ink: #000000;

  --font-text: -apple-system, system-ui, "Segoe UI", Roboto, sans-serif;
  --font-num: ui-rounded, -apple-system, system-ui, "Segoe UI", Roboto, sans-serif;
  --gutter: 24px;
  --radius-card: 10px;
}

/* --- Tokens: dark column ------------------------------------------------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-scheme="light"]) {
    color-scheme: dark;
    --ground: #0B0E12;
    --card: #171C23;
    --hairline: #2A2F36;
    --ink-primary: #FFFFFF;
    --ink-body: #C7CED8;
    --ink-secondary: #9AA4B1;
    --ink-old: #B8BEC7;
    --ink-disabled: #5C6B7A;
    --trust-amber: #FFB340;
    --sun: #FFB340;
    --bft-calm: #5C6B7A;
    --bft-2: #4FA3D8;
    --bft-3: #3FC2A0;
    --bft-4: #8DD44A;
    --bft-5: #F2D13D;
    --bft-6: #F59A2B;
    --bft-7: #EC5A2A;
    --bft-8: #E0245E;
    --bft-9: #A32CD1;
    --bft-10: #F5F5F7;
    --shade-day-opacity: 0.07;
    --shade-night-opacity: 0;
  }
}
/* ?scheme=dark forces the dark column (verification aid; same values as above) */
:root[data-scheme="dark"] {
  color-scheme: dark;
  --ground: #0B0E12;
  --card: #171C23;
  --hairline: #2A2F36;
  --ink-primary: #FFFFFF;
  --ink-body: #C7CED8;
  --ink-secondary: #9AA4B1;
  --ink-old: #B8BEC7;
  --ink-disabled: #5C6B7A;
  --trust-amber: #FFB340;
  --sun: #FFB340;
  --bft-calm: #5C6B7A;
  --bft-2: #4FA3D8;
  --bft-3: #3FC2A0;
  --bft-4: #8DD44A;
  --bft-5: #F2D13D;
  --bft-6: #F59A2B;
  --bft-7: #EC5A2A;
  --bft-8: #E0245E;
  --bft-9: #A32CD1;
  --bft-10: #F5F5F7;
  --shade-day-opacity: 0.07;
  --shade-night-opacity: 0;
}

/* --- Base ------------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink-primary);
  font-family: var(--font-text);
  font-size: 15px;
  line-height: 1.4;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}
.page {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px var(--gutter) 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}
.hidden { display: none !important; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* --- Header + hero cluster (HANDOFF §9, §8.1) ----------------------------- */
.header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px 40px;
  flex-wrap: wrap;
}
.header-left { min-width: 0; }
h1 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}
.trust {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 20px;
}
.trust.amber { color: var(--trust-amber); font-weight: 600; }
.trust .glyph { width: 16px; height: 16px; flex: none; }
.trust .glyph path, .trust .glyph line { stroke: currentColor; }
.trust .glyph circle { fill: currentColor; }

.ring {
  width: 14px; height: 14px; flex: none;
  border-radius: 50%;
  border: 2px solid currentColor;
  border-right-color: transparent;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .ring { animation-duration: 2.4s; } }

.hero {
  display: flex;
  align-items: flex-end;
  gap: 18px;
  flex-wrap: wrap;
}
.hero-main {
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.hero-kn {
  font-size: 72px;
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.03em;
}
.hero-kn.dash { color: var(--ink-disabled); font-weight: 400; }
.hero-unit {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink-secondary);
}
.hero-side {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-bottom: 4px;
}
.hero-gust { font-size: 26px; font-weight: 700; line-height: 1; }
.hero-gust .g { font-size: 17px; font-weight: 600; color: var(--ink-secondary); margin-right: 4px; }
.hero-dir {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 17px;
  font-weight: 600;
}
.hero-dir svg { width: 18px; height: 18px; display: block; }
.hero-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  padding-bottom: 6px;
}
.chip-peak {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--card);
  border-radius: 999px;
  padding: 6px 12px 6px 10px;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: 0 0 0 1px var(--hairline) inset;
}
.chip-peak .dot { width: 10px; height: 10px; border-radius: 50%; flex: none; }
.pill { width: 48px; height: 6px; border-radius: 3px; }
.arrow { fill: currentColor; }

/* --- Summary / body ------------------------------------------------------- */
.summary {
  font-size: 16px;
  color: var(--ink-body);
  margin: 0;
  max-width: 72ch;
}
.body-note { font-size: 16px; color: var(--ink-body); margin: 0; }

/* --- Chart card (HANDOFF §9, §6) ------------------------------------------ */
.card {
  background: var(--card);
  border-radius: var(--radius-card);
  padding: 16px 28px 20px;
  box-shadow: 0 0 0 1px var(--hairline) inset;
}
.chart-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 13px;
  color: var(--ink-secondary);
  font-weight: 600;
}
.chart-head h2 { font-size: 15px; font-weight: 700; color: var(--ink-primary); margin: 0; }
.chart { display: block; width: 100%; height: auto; overflow: visible; }
.chart text { font-family: var(--font-num); font-weight: 600; fill: var(--ink-primary); }
.chart .grid { stroke: var(--ink-primary); opacity: 0.12; stroke-width: 1; }
.chart .grid-label { font-size: 11px; opacity: 0.45; }
.chart .shade-day { fill: url(#ww-shade-day); opacity: var(--shade-day-opacity); }
.chart .shade-night { fill: url(#ww-shade-night); opacity: var(--shade-night-opacity); }
.chart .bar-inset { fill: none; stroke: var(--bft-8); stroke-width: 2; }
.chart .gust-line { fill: none; stroke: var(--ink-primary); stroke-width: 1.5; opacity: 0.75; stroke-linejoin: round; }
.chart .gust-cap { stroke: var(--ink-primary); stroke-width: 1.5; stroke-linecap: round; }
.chart .sun { fill: var(--sun); }
.chart .tick { stroke: var(--ink-primary); opacity: 0.5; stroke-width: 1; }
/* Tick labels sit inside the plot bottom (the bottom inset is the arrow row),
   so they get a card-coloured halo to stay legible over bars. */
.chart .tick-label {
  font-size: 12px;
  opacity: 0.8;
  paint-order: stroke;
  stroke: var(--card);
  stroke-width: 3px;
  stroke-linejoin: round;
}
.chart.narrow .tick-label { font-size: 11px; }
.chart .tick-label .day { font-weight: 700; }
.chart .arrow { fill: var(--ink-primary); }
.chart .now-rule { stroke: var(--ink-primary); stroke-width: 1.5; }
.chart .now-label { font-size: 12px; }
.chart .edge-rule { stroke: var(--ink-primary); stroke-width: 1; stroke-dasharray: 3 3; opacity: 0.7; }
.chart .edge-label { font-size: 12px; opacity: 0.7; }

.bft-calm { fill: var(--bft-calm); background: var(--bft-calm); }
.bft-2 { fill: var(--bft-2); background: var(--bft-2); }
.bft-3 { fill: var(--bft-3); background: var(--bft-3); }
.bft-4 { fill: var(--bft-4); background: var(--bft-4); }
.bft-5 { fill: var(--bft-5); background: var(--bft-5); }
.bft-6 { fill: var(--bft-6); background: var(--bft-6); }
.bft-7 { fill: var(--bft-7); background: var(--bft-7); }
.bft-8 { fill: var(--bft-8); background: var(--bft-8); }
.bft-9 { fill: var(--bft-9); background: var(--bft-9); }
.bft-10 { fill: var(--bft-10); background: var(--bft-10); box-shadow: 0 0 0 2px var(--bft-8) inset; }

.legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  margin-top: 14px;
  font-size: 12px;
  color: var(--ink-secondary);
  font-weight: 500;
}
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.legend-ramp { display: inline-flex; gap: 3px; align-items: flex-end; }
.legend-ramp .swatch {
  width: 12px; height: 12px; border-radius: 3px; display: block;
}
.legend-ramp .step { display: flex; flex-direction: column; align-items: center; gap: 2px; font-size: 10px; line-height: 1; }
.legend-item svg { display: block; width: 22px; height: 14px; }
.legend-item .sundot { width: 6px; height: 6px; border-radius: 50%; background: var(--sun); }

/* --- Table (HANDOFF §9, §8.1 columns) ------------------------------------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; min-width: 0; }
table {
  border-collapse: collapse;
  width: 100%;
  min-width: 420px;
  font-size: 15px;
}
th, td {
  text-align: left;
  padding: 0 10px;
  height: 44px;
  border-bottom: 1px solid var(--hairline);
  white-space: nowrap;
}
th:first-child, td:first-child { padding-left: 4px; }
th:last-child, td:last-child { padding-right: 4px; }
thead th, tr.day-row th {
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-secondary);
  text-transform: none;
  height: 36px;
  border-bottom: 1px solid var(--hairline);
  position: sticky;
  top: 0;
  background: var(--ground);
  z-index: 1;
}
tr.day-row th:first-child { color: var(--ink-primary); font-weight: 700; }
td.hour { color: var(--ink-secondary); width: 72px; }
td.kn { font-family: var(--font-num); font-weight: 700; font-size: 17px; width: 64px; }
td.gust { color: var(--ink-body); width: 64px; }
td.dir { display: flex; align-items: center; gap: 8px; height: 44px; font-weight: 500; }
td.dir svg { width: 14px; height: 14px; display: block; }
td.bft { width: 48px; text-align: right; }
.chip {
  display: inline-block;
  min-width: 24px;
  padding: 2px 6px;
  border-radius: 6px;
  color: var(--chip-ink);
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  line-height: 16px;
}
.chip.bft-10 { color: #FFFFFF; }
:root[data-scheme="dark"] .chip.bft-10 { color: #000000; }
@media (prefers-color-scheme: dark) { :root:not([data-scheme="light"]) .chip.bft-10 { color: #000000; } }
tr.now td { background: color-mix(in srgb, var(--card) 70%, transparent); }
tr.now td.hour { color: var(--ink-primary); font-weight: 600; }

/* --- Footer --------------------------------------------------------------- */
.footer {
  display: flex;
  justify-content: space-between;
  gap: 12px 24px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--ink-secondary);
  padding-top: 8px;
  border-top: 1px solid var(--hairline);
}
.footer a { color: inherit; }
.footer .trying { display: inline-flex; align-items: center; gap: 8px; }

/* --- Trust-state treatments (HANDOFF §3) ---------------------------------- */
.state-old .num,
.state-old .hero-kn,
.state-old .hero-gust,
.state-old .hero-dir,
.state-old td.kn,
.state-old td.gust,
.state-old td.dir,
.state-horizon td.kn,
.state-horizon td.gust,
.state-horizon td.dir { color: var(--ink-old); }
.state-old .chart,
.state-old .pill,
.state-old .chip,
.state-old .chip-peak .dot,
.state-old .hero-dir svg,
.state-horizon .chart,
.state-horizon .chip { filter: saturate(0.35); opacity: 0.7; }

/* --- Breakpoints ---------------------------------------------------------- */
@media (max-width: 899px) {
  .card { padding: 14px 20px 16px; }
}
@media (max-width: 699px) {
  .header { flex-direction: column; align-items: stretch; }
  .hero { justify-content: space-between; }
  .hero-right { align-items: flex-start; padding-bottom: 0; }
}
@media (max-width: 599px) {
  :root { --gutter: 16px; }
  .page { padding-top: 20px; gap: 16px; }
  h1 { font-size: 28px; }
  .hero-kn { font-size: 64px; }
  .chip-peak { white-space: normal; }
}

/* --- Chart hover readout ---------------------------------------------------- */
#chart-host { position: relative; touch-action: pan-y; }
.chart .hover-col { fill: var(--ink-primary); opacity: 0.08; pointer-events: none; }
.chart-tip {
  position: absolute;
  top: 0;
  z-index: 2;
  pointer-events: none;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--card);
  box-shadow: 0 0 0 1px var(--hairline), 0 4px 14px rgba(0, 0, 0, 0.18);
  color: var(--ink-primary);
  font-family: var(--font-num);
  font-size: 13px;
  line-height: 1.35;
  white-space: nowrap;
}
.chart-tip[hidden] { display: none; }
.chart-tip .tip-time { font-weight: 700; }
.chart-tip .tip-kn { font-size: 18px; font-weight: 700; }
.chart-tip .tip-gust { color: var(--ink-secondary); font-weight: 600; margin-left: 4px; }
.chart-tip .tip-dir { display: flex; align-items: center; gap: 6px; color: var(--ink-body); }
.chart-tip .arrow { fill: var(--ink-primary); }