/* ════════════════════════════════════════════════════════════════
   SKY — observing almanac
   Deep-red-on-black "night vision" instrument.
   A printed ephemeris read under a red headlamp at a dark-sky site.
   ════════════════════════════════════════════════════════════════ */

/* ─── Theme custom properties ─── */

:root,
:root[data-theme="night"] {
  color-scheme: dark;
  /* Night mode — deep red on black */
  --bg:            #0a0808;
  --bg-alt:        #110d0d;
  --ink:           #cc2200;
  --ink-dim:       #661100;
  --ink-bright:    #ff4400;
  --rule:          #330d00;
  --band-day:      #1a0800;
  --band-civil:    #0f0500;
  --band-nautical: #070200;
  --band-astro:    #020000;
  --band-moon:     rgba(180,100,30,0.18);
  --cloud-rgb:     150,165,195;
  --gantt-bar:     #cc2200;
  --gantt-bar-dim: #661100;
  --peak-tick:     #ff6600;
  --badge-bg:      #1a0500;
  --badge-border:  #661100;
  --header-bg:     #060404;
  --panel-bg:      #0a0808;
  --input-bg:      #110500;
  --border:        #330d00;
  --font-mono:     ui-monospace, "SF Mono", Menlo, Consolas, "Courier New", monospace;
  /* Red-ink phosphor glow (night only) */
  --glow:          0 0 6px rgba(255,68,0,0.35);
  --bar-glow:      0 0 6px rgba(230,40,0,0.40);
  --panel-shadow:  0 -10px 30px rgba(0,0,0,0.7);
}

[data-theme="paper"] {
  color-scheme: light;
  --bg:            #f2ede3;
  --bg-alt:        #e8e0d0;
  --ink:           #1a1008;
  --ink-dim:       #6b5a3a;
  --ink-bright:    #2a1800;
  --rule:          #c8b898;
  --band-day:      #f8f4ec;
  --band-civil:    #ede4d4;
  --band-nautical: #d8cdb8;
  --band-astro:    #c8b898;
  --band-moon:     rgba(160,120,60,0.22);
  --cloud-rgb:     120,108,92;
  --gantt-bar:     #2a1800;
  --gantt-bar-dim: #8a7040;
  --peak-tick:     #c84000;
  --badge-bg:      #e0d4bc;
  --badge-border:  #a08060;
  --header-bg:     #e0d8c8;
  --panel-bg:      #f2ede3;
  --input-bg:      #ece4d4;
  --border:        #c8b898;
  --glow:          none;
  --bar-glow:      none;
  --panel-shadow:  0 -6px 20px rgba(60,40,10,0.25);
}

/* ─── Reset / base ─── */

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

[hidden] { display: none !important; }

html { accent-color: var(--ink); }

body {
  font-family: var(--font-mono);
  background: var(--bg);
  color: var(--ink);
  font-size: 13px;
  line-height: 1.4;
  min-height: 100dvh;
  -webkit-text-size-adjust: 100%;
  font-variant-numeric: tabular-nums;
}

::selection { background: var(--ink); color: var(--bg); }

:focus { outline: none; }
:focus-visible {
  outline: 1px solid var(--ink-bright);
  outline-offset: 2px;
}

/* Scrollbars — thin red traces */
* { scrollbar-width: thin; scrollbar-color: var(--ink-dim) var(--bg-alt); }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-alt); }
::-webkit-scrollbar-thumb { background: var(--ink-dim); border: 2px solid var(--bg-alt); }
::-webkit-scrollbar-thumb:hover { background: var(--ink); }

/* Micro-headers: all-caps, wide tracking */
.section-header, .setup-title, .gantt-empty-msg,
#gantt-header-fixed, #label-minalt, #ctrl-dark-wrap label,
.setup-manual label, #detail-scrub-label, .legend-item {
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

/* ─── Buttons & inputs (instrument controls) ─── */

button {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 0;
  min-height: 40px;
  padding: 0 14px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.12s, color 0.12s, border-color 0.12s, text-shadow 0.12s;
}
button:hover {
  background: var(--badge-bg);
  color: var(--ink-bright);
  border-color: var(--ink-dim);
  text-shadow: var(--glow);
}
button:active { background: var(--ink); color: var(--bg); text-shadow: none; }

input[type="number"],
input[type="date"],
select {
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--ink-bright);
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 0;
  min-height: 40px;
  padding: 0 10px;
}
input::placeholder { color: var(--ink-dim); opacity: 1; }
input[type="number"]:focus, input[type="date"]:focus, select:focus {
  border-color: var(--ink);
}

input[type="date"]::-webkit-calendar-picker-indicator {
  cursor: pointer;
  /* white (dark scheme) indicator → red phosphor */
  filter: sepia(1) saturate(8) hue-rotate(-25deg) brightness(0.85);
}
[data-theme="paper"] input[type="date"]::-webkit-calendar-picker-indicator { filter: none; }

select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 26px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='7'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%23cc2200' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
}
[data-theme="paper"] select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='7'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%231a1008' stroke-width='1.5'/%3E%3C/svg%3E");
}

/* Range sliders — chart-recorder needle on a ruled track */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 32px;
  background: transparent;
  cursor: pointer;
  border: 0;
  padding: 0;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 2px;
  background: repeating-linear-gradient(to right,
    var(--ink-dim) 0 1px, var(--rule) 1px calc(100% / 9));
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 24px;
  margin-top: -11px;
  border-radius: 0;
  background: var(--ink);
  border: 1px solid var(--ink-bright);
  box-shadow: var(--bar-glow);
}
input[type="range"]::-moz-range-track {
  height: 2px;
  background: repeating-linear-gradient(to right,
    var(--ink-dim) 0 1px, var(--rule) 1px calc(100% / 9));
}
input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 24px;
  border-radius: 0;
  background: var(--ink);
  border: 1px solid var(--ink-bright);
  box-shadow: var(--bar-glow);
}

/* ─── Header bar ─── */

#header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 6px 12px;
  background: var(--header-bg);
  border-bottom: 1px solid var(--rule);
}

#header-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.32em;
  color: var(--ink-bright);
  text-shadow: var(--glow);
}
/* blinking station-cursor caret */
#header-title::after {
  content: "▌";
  margin-left: 2px;
  color: var(--ink);
  animation: caret-blink 1.2s steps(1) infinite;
}
@keyframes caret-blink { 50% { opacity: 0; } }

.header-meta {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
#header-loc { flex: 1 1 auto; min-width: 0; }
#header-date { margin-left: auto; flex-shrink: 0; color: var(--ink-dim); }

#btn-theme, #btn-help {
  flex-shrink: 0;
  width: 40px;
  min-height: 40px;
  padding: 0;
  font-size: 16px;
  line-height: 1;
}
#btn-help { font-size: 14px; }

/* ─── Setup panel ─── */

#panel-setup { padding: 7vh 16px 48px; }

#setup-inner {
  position: relative;
  max-width: 430px;
  margin: 0 auto;
  padding: 28px 20px 24px;
  border: 1px solid var(--border);
}
/* registration corner brackets */
#setup-inner::before, #setup-inner::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
}
#setup-inner::before {
  top: -1px; left: -1px;
  border-top: 1px solid var(--ink-bright);
  border-left: 1px solid var(--ink-bright);
}
#setup-inner::after {
  bottom: -1px; right: -1px;
  border-bottom: 1px solid var(--ink-bright);
  border-right: 1px solid var(--ink-bright);
}

.setup-title { text-align: center; margin-bottom: 18px; }

#btn-geolocate {
  display: block;
  width: 100%;
  min-height: 46px;
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
  text-shadow: none;
}
#btn-geolocate:hover { background: var(--ink-bright); border-color: var(--ink-bright); color: var(--bg); }

.setup-divider {
  text-align: center;
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--ink-dim);
  margin: 16px 0 12px;
}

.setup-manual {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 8px;
  align-items: center;
}
.setup-manual input { width: 100%; }
#btn-manual-loc { grid-column: 1 / -1; min-height: 42px; }

/* ─── Map picker: search + chart ─── */

/* z-index must clear Leaflet's internal panes/controls (they go up to 1000) */
#setup-search-wrap { position: relative; z-index: 1100; margin-bottom: 8px; }
#input-search {
  width: 100%;
  min-height: 42px;
  padding: 0 10px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  color: var(--ink);
  font-family: inherit;
  font-size: 12px;
  letter-spacing: 0.08em;
}
#input-search::placeholder { color: var(--ink-dim); }
#search-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 20;
  max-height: 252px;   /* fits the geocoder's 6 results without scrolling */
  overflow-y: auto;
  background: var(--bg);
  border: 1px solid var(--border);
  border-top: none;
}
.search-result {
  display: block;
  width: 100%;
  min-height: 40px;
  padding: 0 10px;
  text-align: left;
  background: none;
  border: none;
  border-bottom: 1px solid var(--rule);
  color: var(--ink);
  font-family: inherit;
  font-size: 10px;
  letter-spacing: 0.1em;
  cursor: pointer;
}
.search-result:last-child { border-bottom: none; }
.search-result:hover, .search-result:focus-visible {
  background: var(--badge-bg);
  color: var(--ink-bright);
  outline: none;
}

#map-pick {
  position: relative;
  height: 240px;
  border: 1px solid var(--rule);
  background: #000;
}
#map-pick-hint {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--ink-dim);
}
/* Re-ink the dark basemap red under night vision; paper keeps it neutral */
[data-theme="night"] #map-pick .leaflet-tile-pane {
  filter: sepia(1) saturate(3.5) hue-rotate(-22deg) brightness(0.9);
}
#map-pick .leaflet-container { font-family: inherit; background: #000; }
#map-pick .leaflet-control-zoom a {
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--rule);
  border-radius: 0;
}
#map-pick .leaflet-control-zoom a:hover { background: var(--badge-bg); color: var(--ink-bright); }
#map-pick .leaflet-bar { border: none; border-radius: 0; box-shadow: none; }
#map-pick .leaflet-control-attribution {
  background: rgba(0, 0, 0, 0.7);
  color: var(--ink-dim);
  font-family: inherit;
  font-size: 8px;
}
#map-pick .leaflet-control-attribution a { color: var(--ink); }
[data-theme="paper"] #map-pick .leaflet-control-attribution { background: rgba(242, 237, 227, 0.8); }

/* Crosshair marker */
.map-marker {
  border: 1px solid var(--ink-bright);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--peak-tick);
  background: transparent;
}
.map-marker::before, .map-marker::after {
  content: '';
  position: absolute;
  background: var(--ink-bright);
}
.map-marker::before { left: 50%; top: -5px; bottom: -5px; width: 1px; margin-left: -0.5px; }
.map-marker::after { top: 50%; left: -5px; right: -5px; height: 1px; margin-top: -0.5px; }

#map-confirm {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}
#map-confirm[hidden] { display: none; }
#map-coords {
  flex: 1 1 auto;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-bright);
  font-variant-numeric: tabular-nums;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
#btn-map-set { min-height: 42px; padding: 0 14px; white-space: nowrap; }

/* Desktop: two-column setup — inputs left, a proper chart right */
@media (min-width: 760px) {
  #panel-setup { padding-top: 9vh; }
  #setup-inner {
    max-width: 880px;
    display: grid;
    grid-template-columns: 280px 1fr;
    grid-template-rows: auto auto auto auto 1fr;
    grid-template-areas:
      "title title"
      "geo   map"
      "or    map"
      "manual map"
      ".     map";
    column-gap: 32px;
    align-items: start;
    padding: 28px 28px 24px;
  }
  .setup-title { grid-area: title; }
  #btn-geolocate { grid-area: geo; }
  #setup-inner > .setup-divider { grid-area: or; }
  .setup-manual { grid-area: manual; }
  .setup-map { grid-area: map; }
  .setup-map > .setup-divider { margin-top: 0; margin-bottom: 8px; }
  #map-pick { height: 420px; }
}

/* ─── Controls bar ─── */

#controls-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 10px 14px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--rule);
}
#ctrl-left { display: flex; gap: 8px; align-items: flex-end; flex-wrap: wrap; }
#btn-change-loc { white-space: nowrap; }
#input-date { width: 158px; }
/* Plan chip: floats in the strip's top-right corner */
#strip-plan {
  position: absolute;
  top: 3px;
  right: 4px;
  z-index: 6;
  font-family: inherit;
  font-size: 8px;
  letter-spacing: 0.16em;
  padding: 3px 7px;
  background: var(--bg);
  border: 1px solid var(--rule);
  color: var(--ink-dim);
  cursor: default;
}
#strip-plan.planning {
  color: var(--ink-bright);
  border-color: var(--ink-bright);
  cursor: pointer;
}
#strip-plan.planning:hover { background: var(--badge-bg); }
#strip-plan[hidden] { display: none; }
#night-strip { touch-action: pan-y; cursor: crosshair; }
#night-strip:focus-visible { outline: 1px solid var(--ink-bright); outline-offset: -1px; }

#ctrl-right {
  display: flex;
  flex: 1 1 260px;
  gap: 14px;
  align-items: flex-end;
}
#ctrl-alt-wrap { flex: 1 1 130px; min-width: 120px; }
#label-minalt, #ctrl-dark-wrap label { display: block; margin-bottom: 2px; }
#minalt-val { color: var(--ink-bright); font-variant-numeric: tabular-nums; }
#select-dark { width: 100%; min-width: 132px; }

/* ─── Night strip ─── */

#night-strip-wrap {
  position: relative;
  width: 100%;
  overflow-x: hidden;
  height: 56px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: var(--band-day);
}
#night-strip { position: relative; width: 100%; height: 100%; }

#strip-bands,
#strip-bands > * { position: absolute; top: 0; bottom: 0; }
#strip-bands { left: 0; right: 0; }
.band-day      { background: var(--band-day); }
.band-civil    { background: var(--band-civil); }
.band-nautical { background: var(--band-nautical); }
.band-astro    { background: var(--band-astro); }

#strip-moon-bar {
  position: absolute;
  bottom: 0;
  height: 16px;
  background: var(--band-moon);
  border-top: 1px dotted var(--ink-dim);
  z-index: 2;
}

/* Forecast cloud cover: pale haze over the night — denser = cloudier. */
#strip-clouds { position: absolute; inset: 0; z-index: 1; pointer-events: none; }
#strip-clouds > * { position: absolute; top: 0; bottom: 0; }

#strip-ticks { position: absolute; inset: 0; pointer-events: none; z-index: 2; }
#strip-ticks > * {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--rule);
  font-size: 8px;
  letter-spacing: 0.1em;
  color: var(--ink-dim);
  text-indent: 3px;
  line-height: 2;
  white-space: nowrap;
  overflow: visible;
}

#strip-cursor {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--ink-bright);
  box-shadow: var(--glow);
  pointer-events: none;
}

#no-dark-warn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 4px 10px;
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-bright);
  background: var(--bg);
  border: 1px solid var(--ink-dim);
  text-align: center;
  max-width: 92%;
  z-index: 3;
}

/* Cloud summary chip — mirrors #strip-plan (top-right) so it reads over the
   hour ticks instead of colliding with them. Hidden when there's no text. */
#strip-labels-left {
  position: absolute;
  top: 3px;
  left: 4px;
  z-index: 6;
  font-size: 8px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
  background: var(--bg);
  border: 1px solid var(--rule);
  padding: 3px 7px;
  white-space: nowrap;
  pointer-events: none;
}
#strip-labels-left:empty { display: none; }
#strip-labels-left > * { display: block; }

/* ─── Filter bar ─── */

#filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--rule);
}

#filter-types {
  display: flex;
  gap: 6px;
  flex: 1 1 100%;
  overflow-x: auto;
  padding-bottom: 2px;
}
#filter-types button {
  flex-shrink: 0;
  font-size: 9px;
  letter-spacing: 0.14em;
  min-height: 30px;
  padding: 0 9px;
  color: var(--ink-dim);
}
#filter-types button.active,
#filter-types button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
  text-shadow: none;
}

#filter-equip { display: flex; }
.equip-btn {
  font-size: 9px;
  min-height: 32px;
  padding: 0 10px;
}
.equip-btn + .equip-btn { margin-left: -1px; }
.equip-btn.active {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
  text-shadow: none;
  position: relative;
  z-index: 1;
}

/* ─── Gantt target list ─── */

#gantt-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

#gantt-header {
  display: flex;
  min-width: max-content;
  width: 100%;
  border-bottom: 1px solid var(--border);
}
#gantt-header-fixed {
  min-width: 140px;
  max-width: 140px;
  flex-shrink: 0;
  padding: 6px 8px;
  border-right: 1px solid var(--rule);
  position: sticky;
  left: 0;
  background: var(--bg);
  z-index: 3;
}
#gantt-header-scroll {
  position: relative;
  flex: 1 1 auto;
  min-width: 400px;
  overflow: hidden;
  font-size: 8px;
  letter-spacing: 0.1em;
  color: var(--ink-dim);
}
#gantt-header-scroll > * {
  position: absolute;
  top: 0;
  bottom: 0;
  border-left: 1px solid var(--rule);
  padding-left: 3px;
  white-space: nowrap;
}

#gantt-list { min-width: max-content; width: 100%; }

.gantt-row {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--rule);
  min-height: 44px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.gantt-row:hover,
.gantt-row:focus-visible { background: var(--bg-alt); outline: none; }
.gantt-row:focus-visible .gantt-name { text-decoration: underline; text-underline-offset: 3px; }
.gantt-row:hover .gantt-fixed,
.gantt-row:focus-visible .gantt-fixed { background: var(--bg-alt); }
.gantt-row:hover .gantt-name { color: var(--ink-bright); text-shadow: var(--glow); }

.gantt-fixed {
  min-width: 140px;
  max-width: 140px;
  flex-shrink: 0;
  padding: 5px 8px;
  border-right: 1px solid var(--rule);
  position: sticky;
  left: 0;
  background: var(--bg);
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0 6px;
  align-content: center;
}
.gantt-name {
  grid-column: 1;
  grid-row: 1;
  font-size: 12px;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.gantt-mag {
  grid-column: 2;
  grid-row: 1;
  justify-self: end;
  font-size: 10px;
  font-variant-numeric: tabular-nums;
  color: var(--ink-dim);
}
.gantt-common {
  grid-column: 1;
  grid-row: 2;
  font-size: 9px;
  letter-spacing: 0.04em;
  color: var(--ink-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.gantt-type-badge {
  grid-column: 2;
  grid-row: 2;
  justify-self: end;
  font-size: 7px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.gantt-scroll-area {
  position: relative;
  flex: 1 1 auto;
  min-width: 400px;
  min-height: 44px;
}
.gantt-bar {
  position: absolute;
  top: 14px;
  height: 16px;
  background: var(--gantt-bar);
  box-shadow: var(--bar-glow);
}
/* NOW cursor: a chart-recorder pen line crossing every row (tonight only) */
.gantt-now {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--peak-tick);
  box-shadow: 0 0 5px var(--peak-tick);
  opacity: 0.8;
  pointer-events: none;
  z-index: 3;
}
.gantt-now-head { opacity: 1; }

/* Group dividers when the night is underway */
.gantt-divider {
  padding: 5px 8px 4px;
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--ink-bright);
  background: var(--bg-alt);
  border-bottom: 1px solid var(--rule);
  position: sticky;
  left: 0;
}
.gantt-divider + .gantt-row { border-top: none; }

/* Currently-observable targets read hotter */
.gantt-row.up-now .gantt-name { color: var(--ink-bright); }

.gantt-peak-tick {
  position: absolute;
  top: -3px;
  bottom: -3px;
  width: 2px;
  background: var(--peak-tick);
}

#gantt-empty { padding: 40px 16px; text-align: center; }
.gantt-empty-msg { color: var(--ink-dim); }

/* ─── Share row ─── */

#share-row { padding: 18px 12px 30px; }
#btn-share {
  display: block;
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  min-height: 48px;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--ink-bright);
  border: 1px solid var(--ink);
  text-shadow: var(--glow);
}
#btn-share:hover { background: var(--ink); color: var(--bg); text-shadow: none; }

/* ─── Detail panel (slides up from bottom) ─── */

#detail-panel {
  position: fixed;
  inset: auto 0 0 0;
  max-height: 88dvh;
  overflow-y: auto;
  overscroll-behavior: contain;
  z-index: 90;
  background: var(--panel-bg);
  border-top: 2px solid var(--ink);
  box-shadow: var(--panel-shadow);
  transform: translateY(100%);
  transition: transform 0.28s ease;
}
/* app.js un-hides the panel, then adds .open on the next frame → slide up;
   removing .open slides it back down before it is re-hidden */
#detail-panel.open { transform: translateY(0); }

#detail-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 14px 16px calc(24px + env(safe-area-inset-bottom));
}

#btn-detail-close {
  display: block;
  margin-left: auto;
  font-size: 10px;
  min-height: 40px;
}

#detail-name {
  font-size: 22px;
  letter-spacing: 0.1em;
  color: var(--ink-bright);
  text-shadow: var(--glow);
}
#detail-common {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-top: 2px;
}

#detail-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}
#detail-badges > span {
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
  padding: 3px 7px;
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
}
#detail-badges > span:empty { display: none; }

/* ─── Detail image: DSS2 survey plate via CDS hips2fits ─── */

#detail-image-wrap {
  margin-top: 18px;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}
#detail-image-frame {
  position: relative;
  width: min(100%, 360px);
  aspect-ratio: 1;
  margin: 0 auto;
  border: 1px solid var(--rule);
  background: #000;
}
#detail-image-wrap.no-plate #detail-image-frame { display: none; }
#detail-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.4s ease;
}
/* Night vision: the plate is re-inked deep red unless the observer
   deliberately asks for full color */
[data-theme="night"] #detail-image {
  filter: grayscale(1) brightness(0.8) sepia(1) saturate(4) hue-rotate(-18deg);
}
[data-theme="night"] #detail-image.fullcolor { filter: none; }
#detail-image.loaded { opacity: 1; }
#detail-image-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--ink-dim);
  animation: plate-blink 1.2s steps(2) infinite;
}
@keyframes plate-blink { 50% { opacity: 0.35; } }
#detail-image-frame.done #detail-image-loading { display: none; }
#detail-image-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  width: min(100%, 360px);
  margin: 6px auto 0;
}
#detail-image-cap {
  flex: 1 1 auto;
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
}
#btn-img-color, #detail-wiki {
  font-family: inherit;
  font-size: 9px;
  letter-spacing: 0.14em;
  padding: 4px 8px;
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  color: var(--ink);
  text-decoration: none;
  cursor: pointer;
}
#btn-img-color:hover, #detail-wiki:hover { color: var(--ink-bright); background: var(--input-bg); }
#btn-img-color[aria-pressed="true"] { background: var(--ink); color: var(--bg); }
#detail-image-wrap.no-plate #btn-img-color { display: none; }

/* Moon: drawn phase diagram in place of a survey plate */
#detail-image-wrap.phase-plate #detail-image { display: none; }
#detail-image-wrap.phase-plate #btn-img-color { display: none; }
#detail-phase {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
}
#detail-phase[hidden] { display: none; }
#detail-phase svg { width: 100%; height: 100%; max-width: 240px; max-height: 240px; }
.phase-lit { fill: var(--ink-bright); }
[data-theme="night"] .phase-lit { filter: drop-shadow(0 0 10px var(--peak-tick)); }
@media (prefers-reduced-motion: reduce) {
  #detail-image-loading { animation: none; }
}

#detail-altaz {
  margin-top: 18px;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}

/* ─── Sky finder: compass rose + point-me ─── */

#detail-finder {
  margin-top: 18px;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}
#finder-row {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-top: 8px;
}
#finder-rose {
  flex: 0 0 auto;
  width: 124px;
  height: 124px;
  color: var(--ink);
}
.rose-label {
  font-family: inherit;
  font-size: 10px;
  fill: var(--ink-dim);
}
#rose-dial, #rose-needle {
  transform-origin: 60px 60px;
  transform-box: view-box;
  transition: transform 0.15s linear;
}
#rose-needle line {
  stroke: var(--ink-bright);
  stroke-width: 2;
}
#rose-needle circle {
  fill: var(--ink-bright);
  filter: drop-shadow(0 0 3px var(--peak-tick));
}
#rose-lubber { fill: var(--peak-tick); }
#rose-lubber[hidden] { display: none; }
.below-horizon #rose-needle line { stroke: var(--ink-dim); }
.below-horizon #rose-needle circle { fill: var(--ink-dim); filter: none; }

#finder-right { flex: 1 1 auto; min-width: 0; }
#finder-text {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-bright);
  font-variant-numeric: tabular-nums;
}
#finder-gauge { margin-top: 8px; }
#finder-gauge-track {
  position: relative;
  height: 6px;
  border: 1px solid var(--rule);
  background: var(--bg-alt);
}
#finder-gauge-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  background: var(--gantt-bar);
  box-shadow: 0 0 4px var(--peak-tick);
  transition: width 0.2s ease;
}
#finder-gauge-target {
  position: absolute;
  top: -3px;
  bottom: -3px;
  width: 2px;
  margin-left: -1px;
  background: var(--peak-tick);
  box-shadow: 0 0 4px var(--peak-tick);
  transition: left 0.2s ease;
}
#finder-gauge-target[hidden] { display: none; }
.near-alt #finder-gauge-target { animation: on-target-pulse 1s steps(2) infinite; }
#finder-gauge-scale {
  display: flex;
  justify-content: space-between;
  margin-top: 2px;
  font-size: 8px;
  letter-spacing: 0.1em;
  color: var(--ink-dim);
}
#finder-gauge-cap {
  margin-top: 4px;
  font-size: 8px;
  letter-spacing: 0.12em;
  color: var(--ink-dim);
}
#finder-gauge-cap[hidden] { display: none; }
#btn-pointme {
  margin-top: 10px;
  min-height: 40px;
  padding: 0 14px;
  font-size: 10px;
  letter-spacing: 0.14em;
}
#finder-guide {
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-bright);
  font-variant-numeric: tabular-nums;
  min-height: 16px;
}
#finder-guide[hidden] { display: none; }
.on-target #finder-guide { animation: on-target-pulse 1s steps(2) infinite; }
.on-target #rose-needle circle { filter: drop-shadow(0 0 7px var(--peak-tick)); }
@keyframes on-target-pulse { 50% { opacity: 0.55; } }
@media (prefers-reduced-motion: reduce) {
  #rose-dial, #rose-needle { transition: none; }
  #finder-gauge-fill, #finder-gauge-target { transition: none; }
  .on-target #finder-guide, .near-alt #finder-gauge-target { animation: none; }
}
#detail-scrub-time { color: var(--ink-bright); font-variant-numeric: tabular-nums; }
#detail-scrub-track { margin-top: 4px; }

/* ─── Help overlay ─── */

#help-overlay {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(0, 0, 0, 0.72);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 24px 12px 48px;
}
#help-overlay[hidden] { display: none; }
#help-panel {
  position: relative;
  max-width: 560px;
  margin: 0 auto;
  padding: 20px 18px 28px;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  box-shadow: var(--panel-shadow);
}
#btn-help-close {
  position: absolute;
  top: 10px;
  right: 10px;
  min-height: 40px;
  padding: 0 12px;
  font-size: 10px;
  letter-spacing: 0.14em;
}
#help-title {
  font-size: 14px;
  letter-spacing: 0.24em;
  color: var(--ink-bright);
  margin-bottom: 14px;
}
.help-h {
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--ink-dim);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 4px;
  margin: 20px 0 10px;
}
#help-panel p {
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: 0.05em;
  margin: 0 0 10px;
}
.help-lede { color: var(--ink); }
.help-term { color: var(--ink-bright); }
#help-panel a { color: var(--ink-bright); }
#help-panel a:hover, #help-panel a:focus-visible { text-decoration: none; }
#detail-scrub-readout {
  display: flex;
  justify-content: space-between;
  font-size: 16px;
  font-variant-numeric: tabular-nums;
  color: var(--ink-bright);
  text-shadow: var(--glow);
  margin-top: 4px;
}

#detail-best-nights {
  margin-top: 20px;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}

#best-nights-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 4px;
  margin-top: 10px;
}
.bny-month { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.bny-label, .bny-month-label {
  font-size: 7px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-dim);
  text-align: center;
  margin-bottom: 2px;
}
.bny-cell { width: 100%; aspect-ratio: 1; background: var(--rule); }

#best-nights-legend {
  display: flex;
  gap: 14px;
  margin-top: 10px;
}
.legend-item::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 5px;
  vertical-align: -1px;
  background: var(--rule);
}
.legend-item.good::before { background: var(--gantt-bar); box-shadow: var(--bar-glow); }
.legend-item.fair::before { background: var(--gantt-bar); opacity: 0.45; }
.legend-item.poor::before { background: var(--rule); }

/* ─── back-link: relocate to bottom-left, re-ink in red ─── */

#bloff-back {
  top: auto !important;
  bottom: max(8px, env(safe-area-inset-bottom)) !important;
  color: var(--ink-dim) !important;
  mix-blend-mode: normal !important;
  background: var(--bg) !important;
  opacity: 1 !important;  /* solid pill — rows scroll beneath it */
  padding: 3px 8px 3px 4px !important;
  border: 1px solid var(--rule) !important;
  border-left: none !important;
}
#bloff-back:hover, #bloff-back:focus-visible { color: var(--ink-bright) !important; }

/* ─── Breakpoints ─── */

@media (min-width: 600px) {
  #night-strip-wrap { height: 64px; }
  #header { padding: 6px 16px; }
  #header-title { font-size: 17px; }
  .header-meta { font-size: 11px; }
  #gantt-header-fixed, .gantt-fixed { min-width: 180px; max-width: 180px; }
  #controls-bar, #filter-bar { padding-left: 16px; padding-right: 16px; }
  #filter-types { flex: 1 1 auto; }
}

@media (min-width: 900px) {
  #main-almanac {
    max-width: 1000px;
    margin: 0 auto;
    border-left: 1px solid var(--rule);
    border-right: 1px solid var(--rule);
  }
  #panel-setup { padding-top: 10vh; }
}

/* ─── Reduced motion ─── */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  #header-title::after { animation: none; opacity: 1; }
  #detail-panel { transition: none; }
}