:root {
  /* Fonts — shared with the PNW Weather app */
  --mono:'Share Tech Mono',ui-monospace,monospace;
  --cond:'Barlow Condensed',system-ui,sans-serif;
  --body:'Barlow',system-ui,sans-serif;

  /* ---- LIGHT theme (default) — shared palette with the PNW Weather app ---- */
  --bg:#e9eef2; --bg2:#dfe7ec; --bg3:#d2dce4;
  --panel:#ffffff; --border:#c4d2dc; --border2:#9fb3c2;
  --text:#16242e; --text-dim:#54697a;
  --accent:#0090c2; --accent-on:#ffffff;
  --warn:#c26500; --danger:#d11d31; --good:#0f9b56;
  --chart-grid:rgba(60,90,110,.16);
  --tooltip-bg:#16242e; --tooltip-text:#e9eef2;
  --shadow:0 1px 4px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);
}
[data-theme="dark"] {
  --bg:#1a2730; --bg2:#21313c; --bg3:#2a3e4b;
  --panel:#1f2e39; --border:#39576c; --border2:#4d7390;
  --text:#dde9f2; --text-dim:#8ba7bc;
  --accent:#00c8ff; --accent-on:#07151d;
  --warn:#ff8c00; --danger:#ff3040; --good:#00e57a;
  --chart-grid:rgba(37,69,96,.30);
  --tooltip-bg:#15212b; --tooltip-text:#dde9f2;
  --shadow:0 1px 4px rgba(0,0,0,.30), 0 4px 16px rgba(0,0,0,.30);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
  transition: background-color .2s ease, color .2s ease;
}

.container {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header — brand pattern shared with the PNW Weather app */
.site-header {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 10px;
  padding-bottom: 10px;
  flex-wrap: wrap;
}
.brand { display: flex; flex-direction: row; align-items: center; gap: 16px; line-height: 1; text-decoration: none; }
.brand-logo { display: block; height: 64px; width: auto; flex: 0 0 auto; object-fit: contain; }
.brand-tag {
  display: inline-flex; flex-direction: column; align-items: flex-start; gap: 2px;
  padding-left: 16px; border-left: 1px solid var(--border2);
  font-family: var(--mono); font-size: 15px; letter-spacing: .22em;
  text-transform: uppercase; line-height: 1.15;
}
.brand-tag .bt-main { color: var(--text); }
.brand-tag .bt-sub { color: var(--accent); }
.brand-tag .bt-kicker { color: var(--text-dim); font-size: 11px; letter-spacing: .18em; }

.site-nav { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.toplink {
  font-family: var(--mono); font-size: 12px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--text-dim); text-decoration: none;
  border: 1px solid var(--border); padding: 5px 10px; white-space: nowrap;
  transition: border-color .15s, color .15s;
}
.toplink:hover { color: var(--accent); border-color: var(--border2); }

/* Theme switch (Light / Auto / Dark) — segmented control like the weather app */
.theme-switch {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.theme-switch button {
  border: 0;
  border-left: 1px solid var(--border);
  background: var(--panel);
  color: var(--text-dim);
  font: inherit;
  font-size: 0.8rem;
  padding: 5px 10px;
  cursor: pointer;
}
.theme-switch button:first-child { border-left: 0; }
.theme-switch button:hover { color: var(--text); }
.theme-switch button.active { background: var(--accent); color: var(--accent-on); }

/* Main */
main.container { padding-top: 1.75rem; padding-bottom: 2.5rem; }
h1 { font-family: var(--cond); font-weight: 600; font-size: 2rem; letter-spacing: .01em; margin: 0 0 0.4rem; }
.lede { color: var(--text-dim); margin: 0 0 1.5rem; max-width: 62ch; }

/* Controls */
.controls {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.1rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.control-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.25rem;
  align-items: flex-end;
}
.controls label.field {
  display: flex;
  flex-direction: column;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-dim);
  gap: 0.35rem;
}
.controls select {
  font-size: 0.95rem;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--text);
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg3);
  min-width: 150px;
}
.controls select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.checkbox {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--text);
  cursor: pointer;
}
.checkbox input { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; }

/* Year / average toggle chips */
.series-toggles { display: flex; flex-direction: column; gap: 0.45rem; width: 100%; }
.series-toggles .st-label {
  font-size: 0.72rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.5px; color: var(--text-dim);
}
.toggle-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  font-size: 0.85rem;
  background: var(--bg3);
  color: var(--text-dim);
  cursor: pointer;
  user-select: none;
}
.chip input { display: none; }
.chip .swatch {
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--swatch, var(--accent));
  flex: 0 0 auto;
  opacity: 0.35;
}
.chip.on { color: var(--text); border-color: var(--border2); background: var(--panel); }
.chip.on .swatch { opacity: 1; }
.chip.is-current.on { border-color: var(--accent); }

/* Zoom timespan slider (noUiSlider, themed) */
.zoom-slider { margin: 1.9rem 0.6rem 0.4rem; height: 8px; }
.zoom-slider.noUi-target {
  background: var(--bg3);
  border: 1px solid var(--border);
  box-shadow: none;
  border-radius: 6px;
}
.zoom-slider .noUi-connect { background: var(--accent); }
.zoom-slider .noUi-handle {
  width: 18px; height: 18px; right: -9px; top: -6px;
  border-radius: 50%;
  background: var(--panel);
  border: 2px solid var(--accent);
  box-shadow: var(--shadow);
  cursor: grab;
}
.zoom-slider .noUi-handle:active { cursor: grabbing; }
.zoom-slider .noUi-handle::before, .zoom-slider .noUi-handle::after { display: none; }
.zoom-slider .noUi-tooltip {
  background: var(--tooltip-bg);
  color: var(--tooltip-text);
  border: none;
  font-size: 0.72rem;
  padding: 2px 6px;
  border-radius: 4px;
}

/* Chart */
.chart-wrap {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  height: 460px;
  box-shadow: var(--shadow);
}
.chart-status {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  color: var(--text-dim);
  font-size: 0.95rem;
}

.summary {
  margin: 1rem 0 0;
  color: var(--text);
  font-size: 0.95rem;
}
.summary .summary-row { display: block; }
.summary .summary-row + .summary-row { margin-top: 0.2rem; }

/* Spawning-survey section */
.spawn-section {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.spawn-section h2 {
  font-family: var(--cond);
  font-weight: 600;
  font-size: 1.5rem;
  margin: 0 0 0.4rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg2);
  margin-top: 2rem;
  padding: 1.5rem 0;
}
.site-footer p { margin: 0 0 0.5rem; font-size: 0.82rem; color: var(--text-dim); }
.site-footer a { color: var(--accent); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.footer-note { font-style: italic; }

@media (max-width: 640px) {
  .brand-logo { height: 46px; }
  .brand-tag { font-size: 12px; letter-spacing: .16em; padding-left: 10px; }
  .brand-tag .bt-kicker { font-size: 9px; }
}
@media (max-width: 560px) {
  .controls select { min-width: 0; flex: 1; }
  .control-row { gap: 0.75rem; }
  .chart-wrap { height: 360px; }
}