/* 48 — dark only, by design */
:root {
  --bg: #0b0e13;
  --card: #11151c;
  --inset: #0d1117;
  --line: #1e2530;
  --line-2: #2a3240;
  --line-3: #3a4352;
  --text: #e8edf3;
  --soft: #c4ccd6;
  --muted: #a8b1bd;
  --accent: #4cc2ff;   /* keep in step with ACCENT in app.py */
  --svt: #c9d4e3;
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
  --sans: 'Space Grotesk', system-ui, sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--sans); }
a { color: var(--text); }
a:hover { color: var(--accent); }
[hidden] { display: none !important; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 20px 20px 48px; }

/* header */
.site-header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: baseline; gap: 14px; text-decoration: none; color: var(--text); }
.brand-mark { font-family: var(--mono); font-size: 48px; font-weight: 600; letter-spacing: -3px; line-height: 1; color: var(--accent); }
.brand-mark.small { font-size: inherit; letter-spacing: 0; }
.brand-tag { font-size: 15px; color: var(--muted); }
.site-nav { display: flex; flex-wrap: wrap; gap: 0 22px; font-size: 15px; }
.site-nav a { color: var(--soft); text-decoration: none; padding: 12px 0; border-bottom: 2px solid transparent; }
.site-nav a[aria-current="page"] { color: var(--text); border-bottom-color: var(--accent); }
.region-pick { display: flex; align-items: center; gap: 10px; }
.region-pick label { font-size: 13px; color: var(--muted); }
.region-pick select { min-height: 44px; background: var(--card); color: var(--text); border: 1px solid var(--line-2); border-radius: 10px; padding: 0 12px; font-family: inherit; font-size: 14px; }

/* layout */
main { display: block; }
.row { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 20px; }
.row > .card { flex: 1 1 360px; min-width: 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 24px; }
.chart-card { margin-top: 20px; }
.now-card, .window-card, .plunge-card, .sources-card { display: flex; flex-direction: column; gap: 14px; }

/* type */
.eyebrow { font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.eyebrow.accent, .accent { color: var(--accent); }
.h2 { margin: 0; font-size: 24px; font-weight: 600; }
.soft { color: var(--soft); font-size: 16px; line-height: 1.45; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.mono { font-family: var(--mono); }
.note { margin: 12px 0 0; font-size: 13px; line-height: 1.5; color: var(--muted); }
.window-card .note { margin-top: auto; }
.warn { margin: 0; padding: 10px 12px; border-radius: 10px; border: 1px solid #5a4a1e; background: #1d1a10; color: #f5d78a; font-size: 14px; line-height: 1.45; }
p.muted.small { margin: 6px 0 0; }

/* now card */
.card-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.pill { font-size: 12px; padding: 4px 10px; border-radius: 999px; background: #1a2029; color: var(--soft); }
.big-price { font-family: var(--mono); font-size: 76px; font-weight: 600; letter-spacing: -2px; line-height: 1; }
.mini-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 4px; }
.mini, .tile { background: var(--inset); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.mini .muted { font-size: 13px; }
.mini-price, .tile-value { font-family: var(--mono); font-size: 24px; font-weight: 600; margin-top: 4px; }

/* pills */
.pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pill-btn { min-width: 52px; min-height: 44px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--line-2); background: transparent; color: var(--text); font-family: var(--mono); font-size: 15px; font-weight: 600; cursor: pointer; }
.pill-btn.wide { padding: 0 20px; font-family: var(--sans); }
.pill-btn[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--bg); }
.pill-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* cheapest window */
.window { display: flex; flex-direction: column; gap: 12px; }
.window-range { font-family: var(--mono); font-size: 34px; font-weight: 600; letter-spacing: -1px; line-height: 1.1; }
.window-facts { display: flex; flex-wrap: wrap; gap: 8px 24px; }

/* chart */
.chart-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; gap: 16px; }
.legend { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; margin-top: 18px; font-size: 13px; color: var(--soft); }
.legend span { display: flex; align-items: center; gap: 8px; }
.sw { display: inline-block; width: 14px; height: 14px; border-radius: 3px; }
.sw-octopus { background: var(--soft); }
.sw-epex { background: var(--soft); opacity: 0.6; }
.sw-n2ex { box-shadow: inset 0 0 0 1.5px var(--soft); }
.sw-plunge { background: var(--accent); }
.sw-est { background-color: var(--soft); background-image: repeating-linear-gradient(135deg, rgba(11,14,19,0.75) 0 2px, transparent 2px 5px); opacity: 0.7; }
.sw-line { display: inline-block; width: 18px; border-top: 2px dashed var(--svt); }
.legend .scale { gap: 2px; margin-left: auto; }
.legend .scale i { display: inline-block; width: 14px; height: 10px; }
.legend .scale em { font-style: normal; margin-left: 8px; }

.chart { position: relative; margin-top: 22px; padding-right: 64px; }
.bars { display: grid; column-gap: 3px; }
.bar { display: flex; flex-direction: column; }
.bar > div { flex: none; }
.bar .pos { border-radius: 2px 2px 0 0; }
.bar .neg { border-radius: 0 0 2px 2px; }
.bar.past { opacity: 0.3; }
.bar.estimate .pos, .bar.estimate .neg { background-image: repeating-linear-gradient(135deg, rgba(11,14,19,0.7) 0 2px, transparent 2px 5px); opacity: 0.75; }
.bar.now .pos, .bar.now .neg { outline: 2px solid #ffffff; outline-offset: 1px; }
.zero-line { position: absolute; left: 0; right: 64px; border-top: 1px solid var(--line-3); }
.svt-line { position: absolute; left: 0; right: 64px; border-top: 2px dashed var(--svt); }
.axis-label { position: absolute; right: 0; width: 56px; text-align: right; font-family: var(--mono); font-size: 12px; line-height: 1.3; color: var(--muted); }
.svt-label { color: var(--svt); }
.ticks { display: grid; column-gap: 3px; margin-top: 10px; padding-right: 64px; font-family: var(--mono); font-size: 12px; color: var(--muted); }
.tiles { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }
.tile { flex: 1 1 160px; }
.empty { margin-top: 22px; padding: 40px 20px; text-align: center; border: 1px dashed var(--line-3); border-radius: 12px; }
.empty p { margin: 0; }

/* estimates-only day, further ahead */
.est-only { margin: 16px 0 0; }
.ahead-card { margin-top: 20px; }
.ahead-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 8px; }
.ahead-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 16px; }
.ahead { flex: 1 1 150px; border: 1px dashed var(--line-3); border-radius: 12px; padding: 14px 16px; }
.ahead-day { font-weight: 600; font-size: 15px; }
.range { position: relative; height: 6px; margin: 16px 0 10px; border-radius: 3px; background: var(--line); }
.range-bar { position: absolute; top: 0; height: 6px; border-radius: 3px; background: #4a5568; }
.range-tick { position: absolute; top: -4px; width: 2px; height: 14px; background: var(--accent); }
.range-labels { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); }

/* plunge + sources */
.plunge-head { font-size: 28px; font-weight: 600; line-height: 1.15; }
.sources { margin: 0; display: flex; flex-direction: column; gap: 8px; }
.sources div { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.sources div:last-child { border-bottom: none; }
.sources dt { color: var(--soft); }
.sources dd { margin: 0; color: var(--muted); }

/* misc */
.empty-page { margin-top: 20px; }
.link-btn { display: inline-flex; align-items: center; min-height: 44px; padding: 0 18px; border-radius: 999px; border: 1px solid var(--accent); color: var(--accent); text-decoration: none; font-weight: 600; }


/* text pages: FAQ, terms, API, contact */
.page { max-width: 860px; margin: 28px auto 0; }
.page.narrow { max-width: 640px; }
.page-title { margin: 0; font-size: 36px; font-weight: 600; letter-spacing: -0.5px; }
.lede { margin: 12px 0 0; font-size: 18px; line-height: 1.55; color: var(--soft); }
.page a { color: var(--accent); }
.page a:hover { color: var(--text); }
.section-title { margin: 36px 0 0; font-size: 22px; font-weight: 600; }
.page .card { margin-top: 14px; }
.qa h2, .qa h3 { margin: 0 0 10px; font-size: 18px; font-weight: 600; line-height: 1.35; }
.qa p, .qa li { color: var(--soft); font-size: 16px; line-height: 1.6; }
.qa p { margin: 0 0 10px; }
.qa p:last-child { margin-bottom: 0; }
.qa ul { margin: 0 0 10px; padding-left: 22px; }
.qa li { margin-bottom: 6px; }
.page-foot { margin-top: 28px; line-height: 1.6; }
.quote { margin: 0; padding: 12px 16px; border-left: 3px solid var(--accent); background: var(--inset); border-radius: 0 10px 10px 0; color: var(--soft); }

/* API docs */
.code { font-family: var(--mono); font-size: 0.92em; padding: 1px 6px; border-radius: 6px; background: var(--inset); border: 1px solid var(--line); color: var(--text); }
a .code { color: var(--accent); }
.endpoint { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.endpoint .code { font-size: 15px; }
.method { font-family: var(--mono); font-size: 12px; font-weight: 600; padding: 3px 8px; border-radius: 6px; background: var(--accent); color: var(--bg); }
.code-block { margin: 12px 0 0; padding: 16px; border-radius: 10px; background: var(--inset); border: 1px solid var(--line); color: #b9e6b0; font-family: var(--mono); font-size: 13px; line-height: 1.5; overflow-x: auto; }
.examples { list-style: none; padding-left: 0 !important; }
.table-card { padding: 0; overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.data-table th, .data-table td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line); vertical-align: top; color: var(--soft); }
.data-table th { color: var(--muted); font-weight: 500; font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; }
.data-table tr:last-child td { border-bottom: none; }

/* forms */
.form { display: flex; flex-direction: column; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 14px; color: var(--soft); }
.field input, .field textarea, .field select { min-height: 44px; background: var(--inset); color: var(--text); border: 1px solid var(--line-2); border-radius: 10px; padding: 10px 14px; font-family: inherit; font-size: 16px; }
.field textarea { resize: vertical; line-height: 1.5; }
.field input:focus, .field textarea:focus, .field select:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.field.sum input { max-width: 120px; font-family: var(--mono); }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form-error { margin: 0; padding: 10px 12px; border-radius: 10px; border: 1px solid #6b2a2a; background: #241314; color: #ffb4b4; }
.primary-btn { align-self: flex-start; min-height: 46px; padding: 0 22px; border-radius: 999px; border: none; background: var(--accent); color: var(--bg); font-family: inherit; font-size: 15px; font-weight: 700; cursor: pointer; }
.primary-btn:focus-visible { outline: 2px solid var(--text); outline-offset: 2px; }

/* forecast page */
.forecast { margin-top: 28px; }
.forecast .chart-card { margin-top: 20px; }
.forecast .h2 { margin-bottom: 8px; }
.forecast .note { margin: 0 0 16px; }
.fc-chart { position: relative; height: 360px; }
.forecast .tiles { margin: 0 0 16px; }

/* sign-up card on the front page */
.signup-card { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 16px 24px; align-items: center; justify-content: space-between; }
.signup-card .h2 { margin-bottom: 6px; }
.signup-card p { margin: 0; }

/* footer */
.site-footer { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; align-items: center; font-size: 14px; color: var(--muted); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 0 20px; }
.site-footer nav a { color: var(--soft); text-decoration: none; padding: 12px 0; }

/* phones */
@media (max-width: 600px) {
  .fc-chart { height: 280px; }
  .page-title { font-size: 30px; }
  .lede { font-size: 16px; }
  .big-price { font-size: 60px; }
  .window-range { font-size: 26px; }
  .bars, .ticks { column-gap: 1px; }
  .ticks { font-size: 11px; }
  .ticks span:nth-child(even) { visibility: hidden; }
  .tile { flex-basis: 120px; padding: 12px 14px; }
  .tile-value { font-size: 20px; }
  .legend .scale { margin-left: 0; }
}