/* The Gorge's River Pulse — full-viewport map with typographic overlays. */

:root {
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* The table the rivers stand on. Muted so the temperature palette carries. */
  --bg: #b7bfb2;
  --table: #c4cbbf;
  --ink: #23272a;
  --muted: #3f4643;
  --faint: rgba(35, 39, 42, 0.32);
  --panel: rgba(255, 255, 255, 0.55);
  --panel-solid: #dfe3dc;
  --line: rgba(35, 39, 42, 0.35);
  --accent: #1f5f73;
  --spark: #3c6f80;
  --spark-fill: rgba(60, 111, 128, 0.28);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #171c22;
    --table: #1e252d;
    --ink: #e6e9e4;
    --muted: #a6ada7;
    --faint: rgba(230, 233, 228, 0.28);
    --panel: rgba(23, 28, 34, 0.6);
    --panel-solid: #252c34;
    --line: rgba(230, 233, 228, 0.3);
    --accent: #7ec3d6;
    --spark: #7ec3d6;
    --spark-fill: rgba(126, 195, 214, 0.22);
  }
}
:root[data-theme="dark"] {
  --bg: #171c22;
  --table: #1e252d;
  --ink: #e6e9e4;
  --muted: #a6ada7;
  --faint: rgba(230, 233, 228, 0.28);
  --panel: rgba(23, 28, 34, 0.6);
  --panel-solid: #252c34;
  --line: rgba(230, 233, 228, 0.3);
  --accent: #7ec3d6;
  --spark: #7ec3d6;
  --spark-fill: rgba(126, 195, 214, 0.22);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  font-family: var(--serif);
  background: var(--bg);
  color: var(--ink);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

.rp-page {
  position: fixed;
  inset: 0;
  background: var(--bg);
}

.rp-map {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  cursor: grab;
}
.rp-page[data-dragging="true"] .rp-map { cursor: grabbing; }

/* Rain and snow fall on their own layer above the map. */
.rp-rain {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* Header ------------------------------------------------------------------ */

.rp-head {
  position: absolute;
  z-index: 2;
  top: 0; left: 0; right: 0;
  padding: calc(12px + env(safe-area-inset-top)) 18px 40px;
  pointer-events: none;
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--bg) 92%, transparent) 0%,
    color-mix(in srgb, var(--bg) 70%, transparent) 55%,
    transparent);
}

/* Idle: the map carries the page; the controls come back on any movement. */
.rp-brand, .rp-cam, .rp-keys, .rp-names-btn, .rp-lede, .rp-toggles {
  transition: opacity 900ms ease;
}
.rp-page[data-idle="true"] .rp-brand,
.rp-page[data-idle="true"] .rp-cam,
.rp-page[data-idle="true"] .rp-keys,
.rp-page[data-idle="true"] .rp-names-btn,
.rp-page[data-idle="true"] .rp-lede,
.rp-page[data-idle="true"] .rp-toggles { opacity: 0.18; }
/* Touch screens have no pointer to wake the chrome, so it never fades there. */
@media (hover: none) {
  .rp-page[data-idle="true"] .rp-brand,
  .rp-page[data-idle="true"] .rp-cam,
  .rp-page[data-idle="true"] .rp-keys,
  .rp-page[data-idle="true"] .rp-names-btn,
  .rp-page[data-idle="true"] .rp-lede,
  .rp-page[data-idle="true"] .rp-toggles { opacity: 1; }
}
.rp-head > * { pointer-events: auto; }

.rp-brand {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  align-items: baseline;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.rp-brand a { color: inherit; text-decoration: none; }
.rp-brand a:hover { color: var(--ink); }
.rp-brand .rp-home {
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.rp-brand .on { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }

.rp-title {
  margin-top: 10px;
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.05;
  letter-spacing: -0.01em;
}

.rp-kicker {
  margin-top: 8px;
  font-family: var(--mono);
  font-size: clamp(10.5px, 1.05vw, 12.5px);
  letter-spacing: 0.14em;
  color: var(--ink);
}

.rp-lede {
  margin-top: 8px;
  max-width: 40ch;
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.45;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.rp-region {
  margin-top: 12px;
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  font-family: var(--mono);
  border-bottom: 1px solid var(--line);
  padding-bottom: 4px;
}
.rp-region-k { font-size: 11px; letter-spacing: 0.12em; color: var(--ink); }
.rp-region-v { font-size: 10.5px; letter-spacing: 0.04em; color: var(--muted); }

.rp-names-btn {
  margin-top: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: 500 11px/1 var(--mono);
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 7px 10px;
  cursor: pointer;
  backdrop-filter: blur(6px);
}
.rp-names-btn[aria-expanded="true"] { background: var(--panel-solid); }

.rp-names {
  margin-top: 6px;
  width: min(320px, calc(100vw - 36px));
  max-height: min(46vh, 420px);
  overflow: auto;
  background: var(--panel-solid);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px;
  font-family: var(--mono);
  font-size: 11.5px;
}
.rp-names button {
  display: grid;
  grid-template-columns: 10px 1fr auto;
  gap: 8px;
  align-items: center;
  width: 100%;
  text-align: left;
  font: inherit;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-radius: 5px;
  padding: 6px 8px;
  cursor: pointer;
}
.rp-names button:hover, .rp-names button.on { background: var(--panel); }
.rp-names i {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 2px;
  background: var(--muted);
}
.rp-names .v { color: var(--muted); font-variant-numeric: tabular-nums; }

/* Camera buttons ---------------------------------------------------------- */

.rp-cam {
  position: absolute;
  top: 110px;
  right: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-end;
}
.rp-cam button {
  width: 30px; height: 30px;
  font: 500 13px/1 var(--mono);
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
  backdrop-filter: blur(6px);
}
.rp-cam button:hover { background: var(--panel-solid); }
.rp-cam .rp-cam-reset { width: auto; padding: 0 9px; font-size: 10.5px; letter-spacing: 0.08em; }
.rp-cam-gap { height: 6px; }
.rp-cam-pad {
  display: grid;
  grid-template-columns: repeat(3, 30px);
  grid-template-rows: repeat(3, 30px);
  gap: 4px;
}
.rp-cam-pad button:nth-child(1) { grid-area: 1 / 2; }
.rp-cam-pad button:nth-child(2) { grid-area: 2 / 1; }
.rp-cam-pad button:nth-child(3) { grid-area: 2 / 3; }
.rp-cam-pad button:nth-child(4) { grid-area: 3 / 2; }

/* Tooltip ----------------------------------------------------------------- */

.rp-tip {
  position: absolute;
  z-index: 3;
  pointer-events: none;
  background: var(--panel-solid);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  max-width: 260px;
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.45;
  color: var(--ink);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}
.rp-tip b { font-family: var(--serif); font-weight: 600; font-size: 14px; display: block; margin-bottom: 2px; }
.rp-tip .m { color: var(--muted); }

.rp-loading {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  pointer-events: none;
}
.rp-page[data-state="ready"] .rp-loading { display: none; }
.rp-page[data-state="error"] .rp-loading { color: #a83a2c; }

/* Footer ------------------------------------------------------------------ */

.rp-foot {
  position: absolute;
  z-index: 1;
  left: 0; right: 0; bottom: 0;
  padding: 10px 18px calc(14px + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
  background: linear-gradient(0deg,
    color-mix(in srgb, var(--bg) 96%, white) 0%,
    color-mix(in srgb, var(--bg) 88%, transparent) 70%,
    transparent);
}
.rp-foot > * { pointer-events: auto; }

.rp-row { display: flex; align-items: flex-end; gap: 22px; }
/* Readouts and legend hang from a common top line; the date sits on the baseline. */
.rp-row-top { flex-wrap: wrap; row-gap: 10px; align-items: flex-start; }
.rp-row-top .rp-date { align-self: flex-end; }

.rp-date {
  flex: 1 1 auto;
  font-family: var(--serif);
  font-size: clamp(20px, 2.6vw, 30px);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}

.rp-gauge { min-width: 180px; }
.rp-gauge-k, .rp-legend-k, .rp-gauge-l, .rp-stat-k {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.rp-gauge-l { text-transform: none; letter-spacing: 0.04em; margin-top: 3px; }
.rp-gauge-v {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
  margin-top: 2px;
}
.rp-gauge-u { font-family: var(--serif); font-size: 14px; font-weight: 400; color: var(--muted); }
.rp-gauge-bar {
  height: 4px;
  margin-top: 5px;
  border-radius: 2px;
  background: var(--faint);
  overflow: hidden;
}
.rp-gauge-bar i { display: block; height: 100%; width: 0; background: var(--accent); transition: width 120ms linear; }

.rp-legend { min-width: 170px; }
.rp-legend-bar {
  height: 10px;
  border-radius: 3px;
  margin-top: 4px;
  background: linear-gradient(90deg, #2b5f88 0%, #3a9a90 27%, #bdb88b 50%, #d98b4e 73%, #a83a2c 100%);
}
.rp-legend-ends {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--muted);
  margin-top: 2px;
}

.rp-toggles { display: flex; flex-direction: column; gap: 6px; align-items: flex-end; align-self: flex-start; }
.rp-units-k {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  color: var(--muted);
  padding: 6px 4px 0 10px;
  background: var(--panel);
}
.rp-tip .n { font-family: var(--serif); font-size: 18px; font-weight: 600; font-variant-numeric: tabular-nums; }
.rp-units {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  font-family: var(--mono);
  font-size: 11px;
  align-self: center;
}
.rp-units button {
  border: 0;
  background: var(--panel);
  color: var(--muted);
  padding: 5px 10px;
  cursor: pointer;
  font: inherit;
  letter-spacing: 0.04em;
}
.rp-units button.on { background: var(--ink); color: var(--bg); }

.rp-row-play { align-items: center; gap: 10px; margin-top: 24px; }
.rp-btn {
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--panel-solid);
  color: var(--ink);
  font: 13px/1 var(--mono);
  cursor: pointer;
  flex: 0 0 auto;
}
.rp-btn:hover { background: var(--ink); color: var(--bg); }
.rp-btn-loop[aria-pressed="false"] { opacity: 0.45; }
.rp-btn-speed { width: auto; padding: 0 10px; border-radius: 17px; font-size: 11px; }

.rp-spark-wrap { position: relative; flex: 1 1 auto; min-width: 0; }
.rp-spark { display: block; width: 100%; height: 54px; cursor: ew-resize; }
.rp-spark-label {
  position: absolute;
  bottom: 100%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-family: var(--serif);
  font-size: 13px;
  color: var(--ink);
  pointer-events: none;
  padding-bottom: 2px;
}
.rp-spark-label b { font-weight: 600; font-variant-numeric: tabular-nums; }
.rp-spark-label .m { font-family: var(--mono); font-size: 10.5px; color: var(--muted); }
.rp-months {
  position: relative;
  height: 12px;
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--muted);
}
.rp-months span { position: absolute; top: 0; transform: translateX(0); white-space: nowrap; }
.rp-months span.tick { transform: translateX(-50%); opacity: 0.8; }

.rp-row-stats { justify-content: space-between; flex-wrap: wrap; row-gap: 4px; align-items: baseline; }
.rp-row-stats { min-height: 26px; }
.rp-stat { display: flex; align-items: baseline; gap: 8px; min-width: 0; }
.rp-stat-v { font-family: var(--serif); font-size: 20px; font-weight: 600; font-variant-numeric: tabular-nums; white-space: nowrap; flex: 0 0 auto; }
.rp-stat-k { text-transform: none; letter-spacing: 0.04em; font-size: 11px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.rp-stat-husum .rp-stat-k:first-child, .rp-stat-rain .rp-stat-k:first-child { text-transform: uppercase; letter-spacing: 0.12em; }
.rp-stat-link {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: 11px/1.4 var(--mono);
  letter-spacing: 0.04em;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.rp-stat-link:hover { color: var(--ink); }

.rp-keys {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 4px 16px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* Narrow or short desktop windows: keep the footer to two rows. */
@media (max-width: 1120px) {
  .rp-gauge-col { display: none; }
}
@media (max-height: 680px) and (min-width: 721px) {
  .rp-lede { display: none; }
  .rp-legend { display: none; }
}
/* Laptop-height windows: a shorter camera stack so it clears the footer toggles. */
@media (max-height: 820px) and (min-width: 721px) {
  .rp-cam-pad, .rp-cam [data-cam="tiltUp"], .rp-cam [data-cam="tiltDown"] { display: none; }
}

/* Phones (and short landscape screens) ------------------------------------ */

@media (max-width: 720px), (max-height: 520px) {
  .rp-head { padding: calc(10px + env(safe-area-inset-top)) 16px 12px; }
  .rp-lede, .rp-keys, .rp-legend, .rp-gauge-col, .rp-stat-link { display: none; }
  .rp-names-btn, .rp-names { display: none; }   /* tap a river instead */
  /* Anchor the camera stack under the header, measured by the script. */
  .rp-cam { top: calc(var(--head-h, 190px) + 8px); bottom: auto; right: 10px; }
  .rp-cam button { width: 36px; height: 36px; }
  .rp-cam-pad, .rp-cam [data-cam="tiltUp"], .rp-cam [data-cam="tiltDown"],
  .rp-cam [data-cam="turnLeft"], .rp-cam [data-cam="turnRight"] { display: none; }
  .rp-cam .rp-cam-reset { height: 30px; }
  .rp-tip { max-width: calc(100vw - 80px); }
  .rp-foot { padding: 8px 16px calc(12px + env(safe-area-inset-bottom)); gap: 8px; }
  .rp-row { gap: 12px; }
  .rp-date { font-size: 20px; width: 100%; }
  .rp-gauge { min-width: 0; flex: 1 1 auto; }
  .rp-gauge-v { font-size: 19px; }
  .rp-toggles { flex-direction: row; gap: 8px; align-self: flex-end; }
  .rp-units button { min-height: 32px; }
  .rp-units-k { display: none; }
  .rp-row-play { margin-top: 22px; }
  .rp-spark { height: 44px; }
  .rp-spark-label { left: auto !important; right: 0; transform: none; font-size: 12px; }
  .rp-months { font-size: 10.5px; }
  .rp-stat-v { font-size: 17px; }
  .rp-stat-k { white-space: normal; }
  .rp-row-stats { row-gap: 2px; }
  .rp-btn { width: 40px; height: 40px; }
  .rp-units button { min-height: 40px; }
}

@media (max-height: 520px) and (orientation: landscape) {
  .rp-title, .rp-kicker, .rp-row-stats { display: none; }
  .rp-head { padding: 6px 16px; }
  .rp-foot { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 16px; padding: 4px 16px calc(6px + env(safe-area-inset-bottom)); }
  .rp-row-play { grid-column: 1 / -1; margin-top: 6px; }
  .rp-toggles, .rp-gauge { display: none; }
  .rp-spark { height: 30px; }
  .rp-date { width: auto; font-size: 16px; }
  .rp-cam { display: none; }   /* pinch and drag cover zoom and turn */
  .rp-names { max-height: calc(100vh - 120px); }
}