/* ---------------------------------------------------------------- tokens
   Dark and light are each selected explicitly against their surface.
   Bucket ramp: diverging blue <-> red, neutral midpoint, anchored at the
   day's median price. b3 = very cheap ... r3 = very dear. */

:root {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface: #1a1a19;
  --surface2: #232321;
  --ink: #ffffff;
  --ink2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --accent: #9085e9;

  --b3: #cde2fb;  --b2: #6da7ec;  --b1: #256abf;
  --n:  #383835;
  --r1: #c4005c;  --r2: #e93277;  --r3: #ffbaca;
  --b3t: #0b0b0b; --b2t: #0b0b0b; --b1t: #ffffff;
  --nt:  #ffffff;
  --r1t: #ffffff; --r2t: #0b0b0b; --r3t: #0b0b0b;

  --good: #0ca30c;
  --warn: #fab219;
  --serious: #ec835a;
  --crit: #d03b3b;
  --delta-good: #0ca30c;
  --delta-bad: #e66767;
}

:root[data-theme="light"] {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --surface2: #ffffff;
  --ink: #0b0b0b;
  --ink2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --accent: #4a3aa7;

  --b3: #104281;  --b2: #256abf;  --b1: #86b6ef;
  --n:  #f0efec;
  --r1: #ff87a7;  --r2: #c4005c;  --r3: #7f003a;
  --b3t: #ffffff; --b2t: #ffffff; --b1t: #0b0b0b;
  --nt:  #0b0b0b;
  --r1t: #0b0b0b; --r2t: #ffffff; --r3t: #ffffff;

  --good: #006300;
  --warn: #8a5b00;
  --serious: #a34022;
  --crit: #d03b3b;
  --delta-good: #006300;
  --delta-bad: #d03b3b;
}

/* ----------------------------------------------------------------- base */

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--page);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

main {
  max-width: 1060px;
  margin: 0 auto;
  padding: 20px 16px 8px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

h1, h2, p { margin: 0; }

h2 { font-size: 15px; font-weight: 650; letter-spacing: -0.01em; }
.sub { font-size: 12.5px; color: var(--muted); margin-top: 2px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px 22px 18px;
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* ---------------------------------------------------------------- header */

.site-header {
  max-width: 1060px;
  margin: 0 auto;
  padding: 16px 16px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border);
}

.brand { display: flex; align-items: center; gap: 12px; }

.brand-mark {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  color: var(--accent);
  display: grid; place-items: center;
  flex: none;
}

.brand h1 { font-size: 17px; font-weight: 700; letter-spacing: -0.02em; }
.brand-sub { font-size: 12.5px; color: var(--muted); }

.header-right { display: flex; align-items: center; gap: 10px; }

.badge {
  font-size: 11.5px; font-weight: 600;
  color: var(--ink2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 10px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}

.icon-btn {
  width: 32px; height: 32px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--ink2);
  display: grid; place-items: center;
  cursor: pointer;
}
.icon-btn:hover { background: color-mix(in srgb, var(--ink) 6%, transparent); }

.icon-moon { display: none; }
:root[data-theme="light"] .icon-moon { display: block; }
:root[data-theme="light"] .icon-sun { display: none; }

/* ------------------------------------------------------------ error banner */

.error-banner {
  max-width: 1060px;
  margin: 14px auto 0;
  padding: 10px 14px;
  border: 1px solid color-mix(in srgb, var(--crit) 45%, transparent);
  background: color-mix(in srgb, var(--crit) 10%, transparent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13.5px;
}
.error-banner[hidden] { display: none; }
.retry-btn {
  margin-left: auto;
  font: inherit; font-size: 13px; font-weight: 600;
  padding: 4px 12px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}
.retry-btn:hover { background: color-mix(in srgb, var(--ink) 6%, transparent); }

/* ------------------------------------------------------------------ hero */

.hero { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }

.hero-main { display: flex; flex-direction: column; gap: 8px; min-width: 260px; }

.hero-label { font-size: 13px; color: var(--muted); font-weight: 500; }

.hero-value {
  font-size: clamp(46px, 7vw, 66px);
  font-weight: 650;
  letter-spacing: -0.025em;
  line-height: 1.05;
}
.hero-unit { font-size: 17px; font-weight: 500; color: var(--muted); margin-left: 8px; letter-spacing: 0; }

.status-chip {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 650;
  color: var(--sc);
  background: color-mix(in srgb, var(--sc) 13%, transparent);
  border: 1px solid color-mix(in srgb, var(--sc) 32%, transparent);
}
.status-chip[hidden] { display: none; }

.hero-side {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 230px;
  flex: 1;
  max-width: 340px;
}

.hero-flex-tile {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
}
.hero-flex-line { display: inline-flex; align-items: center; gap: 8px; font-size: 17px; font-variant-numeric: tabular-nums; }

.hero-note { font-size: 12px; color: var(--muted); }

.delta-chip {
  font-size: 12px;
  font-weight: 650;
  padding: 2px 8px;
  border-radius: 999px;
  color: var(--dc);
  background: color-mix(in srgb, var(--dc) 13%, transparent);
}
.delta-chip[hidden] { display: none; }

/* ----------------------------------------------------------------- tiles */

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
}

.tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px 11px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.tile-label { font-size: 12px; color: var(--ink2); font-weight: 500; }
.tile-value { font-size: 21px; font-weight: 650; letter-spacing: -0.01em; }
.tile-sub { font-size: 11.5px; color: var(--muted); }

/* ----------------------------------------------------------------- chart */

.chart-wrap { position: relative; }
.chart-wrap svg { display: block; width: 100%; }
.chart-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 13.5px;
}
.chart-empty[hidden] { display: none; }

.ramp-legend {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  margin-top: 12px;
}
.ramp-bar { display: flex; height: 8px; width: 250px; border-radius: 3px; overflow: hidden; }
.ramp-step { flex: 1; }
.ramp-step.b3 { background: var(--b3); } .ramp-step.b2 { background: var(--b2); }
.ramp-step.b1 { background: var(--b1); } .ramp-step.n  { background: var(--n); }
.ramp-step.r1 { background: var(--r1); } .ramp-step.r2 { background: var(--r2); }
.ramp-step.r3 { background: var(--r3); }
.ramp-labels {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--muted);
  width: 250px;
}

.date-nav { display: flex; gap: 6px; }
.nav-btn {
  height: 30px;
  min-width: 30px;
  padding: 0 12px;
  font: inherit;
  font-size: 14px;
  font-weight: 550;
  color: var(--ink2);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
}
.nav-btn:hover { background: color-mix(in srgb, var(--ink) 6%, transparent); color: var(--ink); }
.nav-btn.is-active { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 55%, transparent); background: color-mix(in srgb, var(--accent) 10%, transparent); }

/* ----------------------------------------------------------------- table */

.day-grid {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 3px 8px;
}

.cell {
  text-align: center;
  padding: 8px 6px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 550;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  cursor: default;
  min-height: 30px;
}
.cell:hover { filter: brightness(1.09); }

.cell.hour {
  background: transparent;
  color: var(--muted);
  font-size: 11.5px;
  font-weight: 450;
  font-variant-numeric: tabular-nums;
  text-align: left;
  padding-left: 4px;
  display: grid;
  align-items: center;
}
.cell.hour:hover { filter: none; }

.cell.b3 { background: var(--b3); color: var(--b3t); }
.cell.b2 { background: var(--b2); color: var(--b2t); }
.cell.b1 { background: var(--b1); color: var(--b1t); }
.cell.n  { background: var(--n);  color: var(--nt); }
.cell.r1 { background: var(--r1); color: var(--r1t); }
.cell.r2 { background: var(--r2); color: var(--r2t); }
.cell.r3 { background: var(--r3); color: var(--r3t); }

.cell.empty { background: transparent; border: 1px dashed var(--border); color: var(--muted); font-weight: 400; }

.cell.is-now { box-shadow: inset 0 0 0 2px var(--accent); }

.cell-content { display: inline-flex; align-items: center; justify-content: center; gap: 6px; }

.cell-badge {
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 1px 5px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--page) 55%, transparent);
  color: inherit;
  opacity: 0.85;
}

/* ---------------------------------------------------------------- tooltip */

.tooltip {
  position: fixed;
  z-index: 60;
  pointer-events: none;
  max-width: 230px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 8px 11px;
  font-size: 12.5px;
  line-height: 1.5;
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.28);
}
.tooltip[hidden] { display: none; }
.tooltip b { font-variant-numeric: tabular-nums; }
.tooltip .tt-time { color: var(--muted); }
.tooltip .tt-delta { font-size: 12px; }
.tooltip .tt-word { color: var(--muted); }

/* ---------------------------------------------------------------- footer */

.site-footer {
  max-width: 1060px;
  margin: 0 auto;
  padding: 22px 16px 44px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.7;
}

/* -------------------------------------------------------------- small cw */

@media (max-width: 640px) {
  .day-grid { grid-template-columns: 84px 1fr; }
  .cell { font-size: 12px; padding: 8px 4px; }
  .hero { gap: 16px; }
  .hero-side { max-width: none; }
  .ramp-bar, .ramp-labels { width: 200px; }
}

@media (max-width: 560px) {
  .badge .b-long { display: none; }
}