/* Cheap Energy Hours — design tokens & layout
   Theme: data-theme="auto" (default) follows the OS; "light"/"dark" are explicit. */

:root,
:root[data-theme="light"] {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --surface-2: #f2f1ec;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --accent: #2a78d6;
  --band: rgba(12, 163, 12, 0.09);
  /* status scale (fixed): cheap = good, mid = warning, expensive = serious */
  --cheap: #0ca30c;
  --mid: #fab219;
  --expensive: #ec835a;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface: #1a1a19;
  --surface-2: #242422;
  --ink: #ffffff;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --baseline: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --accent: #3987e5;
  --band: rgba(12, 163, 12, 0.14);
  --cheap: #23bb23;
  --mid: #fab219;
  --expensive: #ec835a;
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --surface-2: #242422;
    --ink: #ffffff;
    --ink-2: #c3c2b7;
    --muted: #898781;
    --grid: #2c2c2a;
    --baseline: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --accent: #3987e5;
    --band: rgba(12, 163, 12, 0.14);
    --cheap: #23bb23;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--page);
  color: var(--ink);
  line-height: 1.55;
}
a { color: var(--accent); }

.wrap { max-width: 880px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 560px) { .wrap { padding: 0 20px; } }

/* ---------------------------------- header --------------------------------- */
header.site {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; padding: 14px 0; flex-wrap: wrap;
}
.logo {
  font-weight: 700; font-size: 17px; text-decoration: none; color: var(--ink);
  white-space: nowrap;
}
.logo span { color: var(--accent); }
.header-tools { display: flex; align-items: center; gap: 8px; margin-left: auto; }

select#zone {
  font: inherit; font-size: 15px; padding: 8px 10px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface); color: var(--ink);
  min-height: 40px;
}

/* On phones the picker gets its own full-width row, matching the button height */
@media (max-width: 559px) {
  header.site { padding: 12px 0 8px; }
  .header-tools { flex: 1 1 100%; margin-left: 0; }
  select#zone { flex: 1 1 auto; min-height: 44px; font-size: 16px; }
  .theme-btn { width: 44px; height: 44px; }
}

.theme-btn {
  font: inherit; font-size: 16px; line-height: 1;
  width: 40px; height: 40px; flex: 0 0 auto;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 10px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--ink);
}
.theme-btn:hover { background: var(--surface-2); }

/* ----------------------------------- hero ---------------------------------- */
.hero { padding: 18px 0 4px; }
.hero h1 { font-size: clamp(25px, 5.4vw, 38px); line-height: 1.15; margin: 0 0 10px; }
/* Second headline line: always breaks, and reads as a subtitle rather than a clause */
.hero h1 .line2 {
  display: block; margin-top: 6px;
  font-size: 0.64em; font-weight: 600; color: var(--ink-2);
}
.hero p.sub { color: var(--ink-2); margin: 0 0 16px; }

#status { font-size: 14px; color: var(--muted); margin: 0 0 10px; }
#status.warn {
  color: var(--ink); background: var(--surface-2);
  border: 1px solid var(--border); border-left: 3px solid var(--mid);
  border-radius: 8px; padding: 8px 12px;
}

.stats {
  display: grid; gap: 10px; margin: 16px 0;
  grid-template-columns: 1fr;
}
@media (min-width: 620px) {
  .stats { grid-template-columns: repeat(3, 1fr); gap: 12px; }
}
.tile {
  position: relative;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 13px 15px;
}
.tile .label { padding-right: 30px; }

/* "?" explainer: expands inside the tile instead of floating, so it behaves
   identically on a phone and on a desktop. */
.tile .info {
  position: absolute; top: 9px; right: 9px;
  width: 26px; height: 26px; padding: 0;
  display: inline-flex; align-items: center; justify-content: center;
  font: inherit; font-size: 13px; font-weight: 600; line-height: 1;
  border-radius: 50%; cursor: pointer;
  border: 1px solid var(--border); background: transparent; color: var(--muted);
}
.tile .info:hover { color: var(--ink); background: var(--surface-2); }
.tile .info[aria-expanded="true"] {
  background: var(--accent); border-color: var(--accent); color: #fff;
}
.info-pop {
  margin-top: 11px; padding-top: 11px; border-top: 1px solid var(--grid);
  font-size: 13px; line-height: 1.5; color: var(--ink-2);
}
.info-pop b { color: var(--ink); }
.tile.hilite { border-color: var(--cheap); }
.tile .label { font-size: 13px; color: var(--ink-2); }
.tile .value {
  font-size: 26px; font-weight: 600; margin-top: 2px;
  font-variant-numeric: tabular-nums; line-height: 1.2;
}
.tile .unit { font-size: 13px; color: var(--muted); font-weight: 400; }
.tile .note { font-size: 13px; color: var(--ink-2); margin-top: 3px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600; border-radius: 999px; padding: 2px 10px;
  border: 1px solid var(--border); color: var(--ink);
}
.chip .dot { width: 9px; height: 9px; border-radius: 50%; flex: 0 0 auto; }
.chip.free { border-color: var(--cheap); color: var(--cheap); }

/* -------------------------------- chart card ------------------------------- */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 14px; margin: 14px 0 22px;
}
@media (min-width: 560px) { .card { padding: 18px; } }

.card-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.card-head h2 { font-size: 16px; margin: 0; }
.tabs { display: inline-flex; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.tabs button {
  font: inherit; font-size: 14px; padding: 7px 15px; border: 0; cursor: pointer;
  background: transparent; color: var(--ink-2); min-height: 38px;
}
.tabs button[aria-selected="true"] { background: var(--accent); color: #fff; }
.tabs button:disabled { opacity: 0.45; cursor: not-allowed; }

.legend {
  display: flex; gap: 12px; flex-wrap: wrap; margin: 10px 0 2px;
  font-size: 12.5px; color: var(--ink-2);
}
.legend .key { display: inline-flex; align-items: center; gap: 6px; }
.legend .swatch { width: 12px; height: 12px; border-radius: 3px; }

.chart-holder { position: relative; margin-top: 4px; }
#chart { width: 100%; height: auto; display: block; touch-action: pan-y; }
#chart text { font-family: inherit; font-size: 11px; fill: var(--muted); }
#chart .gridline { stroke: var(--grid); stroke-width: 1; }
#chart .baseline { stroke: var(--baseline); stroke-width: 1; }
#chart .now-label { fill: var(--ink); font-weight: 600; font-size: 10px; }
#chart .band { fill: var(--band); }
#chart .hit { fill: transparent; }
#chart .sel { stroke: var(--ink); stroke-width: 1.5; fill: none; opacity: 0.55; }

.chart-empty {
  border: 1px dashed var(--border); border-radius: 12px;
  padding: 18px; margin: 8px 0 4px; background: var(--page);
}
.chart-empty p { margin: 0 0 8px; font-size: 14px; color: var(--ink-2); max-width: 60ch; }
.chart-empty b { color: var(--ink); }
.chart-empty button {
  font: inherit; font-size: 15px; font-weight: 600; padding: 9px 16px; margin-top: 4px;
  border-radius: 10px; border: 0; background: var(--accent); color: #fff; cursor: pointer;
}

details.table-view tr.gap td { color: var(--muted); font-style: italic; }

.tooltip {
  position: fixed; pointer-events: none; z-index: 20; display: none;
  background: var(--surface); color: var(--ink); border: 1px solid var(--border);
  border-radius: 10px; padding: 8px 11px; font-size: 13px;
  box-shadow: 0 6px 22px rgba(0,0,0,0.22); max-width: 240px;
}
.tooltip b { font-size: 14px; }
.tooltip .cls { color: var(--ink-2); }

.windows { display: grid; grid-template-columns: 1fr; gap: 10px; margin-top: 14px; }
@media (min-width: 560px) { .windows { grid-template-columns: 1fr 1fr; gap: 12px; } }
.win { border: 1px solid var(--border); border-radius: 12px; padding: 10px 14px; font-size: 14px; }
.win b { font-size: 16px; }
.win .tag { font-size: 12px; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; }
.win.cheap { border-color: color-mix(in srgb, var(--cheap) 35%, var(--border)); }
.win.cheap .tag { color: var(--cheap); }
.win.exp .tag { color: var(--expensive); }

/* real-price control */
.pricemode {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--grid);
  font-size: 13.5px; color: var(--ink-2);
}
.pricemode label.sw { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; color: var(--ink); }
.pricemode input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--accent); }
.pricemode select {
  font: inherit; font-size: 14px; padding: 6px 10px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--page); color: var(--ink);
  min-height: 36px;
}
.pricemode.currency-row { border-top: 0; padding-top: 0; }
.pricemode input[type="number"] {
  font: inherit; font-size: 14px; width: 76px; padding: 5px 8px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--page); color: var(--ink);
}
.pricemode .hint { font-size: 12.5px; color: var(--muted); flex-basis: 100%; margin: 0; }

details.table-view { margin-top: 12px; font-size: 14px; }
details.table-view summary { cursor: pointer; color: var(--ink-2); min-height: 34px; }
details.table-view table { border-collapse: collapse; margin-top: 10px; width: 100%; max-width: 460px; }
details.table-view th, details.table-view td {
  text-align: right; padding: 5px 10px; border-bottom: 1px solid var(--grid);
  font-variant-numeric: tabular-nums;
}
details.table-view th:first-child, details.table-view td:first-child { text-align: left; }

.attribution { font-size: 12px; color: var(--muted); margin-top: 12px; }

/* -------------------------------- subscribe -------------------------------- */
.subscribe h2 { font-size: 19px; margin: 0 0 6px; }
.subscribe p { color: var(--ink-2); margin: 0 0 12px; }
.sub-form { display: flex; gap: 10px; flex-wrap: wrap; }
.sub-form input[type="email"] {
  flex: 1 1 220px; font: inherit; font-size: 16px; padding: 11px 14px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--page); color: var(--ink);
}
.sub-form button {
  font: inherit; font-weight: 600; font-size: 16px; padding: 11px 18px; border-radius: 10px;
  border: 0; background: var(--accent); color: #fff; cursor: pointer; flex: 1 1 auto;
}
@media (min-width: 560px) { .sub-form button { flex: 0 0 auto; } }
.sub-zone { font-size: 13px; color: var(--muted); margin: 10px 0 0; }
.sub-msg { font-size: 14px; margin-top: 10px; color: var(--ink-2); }
.sub-msg.ok { color: var(--cheap); }
.sub-msg.err { color: var(--expensive); }

/* ------------------------------ content & links ---------------------------- */
section.content { margin: 26px 0; }
section.content h2 { font-size: 20px; }
section.content h3 { font-size: 16px; margin-bottom: 4px; }
section.content p { color: var(--ink-2); max-width: 70ch; }

.country-grid {
  display: grid; gap: 8px; margin-top: 12px;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
}
.country-grid a {
  display: block; padding: 9px 12px; border-radius: 10px; font-size: 14px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--ink); text-decoration: none;
}
.country-grid a:hover { background: var(--surface-2); }

footer.site {
  border-top: 1px solid var(--border); margin-top: 36px; padding: 20px 0 32px;
  font-size: 13px; color: var(--muted);
}
footer.site a { color: var(--ink-2); }
footer.site .cols { display: flex; gap: 16px; flex-wrap: wrap; justify-content: space-between; }