:root {
  --bg: #05060d;
  --ink: #f4efe4;
  --muted: rgba(244, 239, 228, 0.62);
  --faint: rgba(244, 239, 228, 0.38);
  --gold: #e8c989;
  --gold-soft: rgba(232, 201, 137, 0.18);
  --ice: #9ec7ff;
  --panel: rgba(8, 10, 22, 0.58);
  --panel-strong: rgba(6, 8, 18, 0.82);
  --stroke: rgba(255, 255, 255, 0.1);
  --danger: #ffb4a2;
  --radius: 18px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.38);
  --sans: "Outfit", "Noto Sans TC", sans-serif;
  --serif: "Cormorant Garamond", "Noto Serif TC", serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--ink); font-family: var(--sans); }
body { overflow: hidden; }
button, input { font-family: inherit; }

#sky {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
  touch-action: none;
  background: #02010a;
}
#sky:active { cursor: grabbing; }

.hud {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
}
.hud > * { pointer-events: auto; }

.glass {
  background: var(--panel);
  border: 1px solid var(--stroke);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
}

.topbar {
  position: absolute;
  top: 16px;
  left: 16px;
  right: 16px;
  display: grid;
  grid-template-columns: minmax(160px, 240px) minmax(220px, 1fr) auto;
  gap: 10px;
  align-items: start;
}

.brand {
  padding: 12px 16px 11px;
  border-radius: var(--radius);
  min-height: 64px;
}
.brand h1 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 26px;
  letter-spacing: 0.04em;
  line-height: 1;
}
.brand h1 span { color: var(--gold); font-style: italic; }
.brand p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.search-wrap { position: relative; }
.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 8px 8px 14px;
  border-radius: var(--radius);
  min-height: 64px;
}
.search-box input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  outline: none;
  color: var(--ink);
  font-size: 15px;
}
.search-box input::placeholder { color: var(--faint); }
.icon-btn {
  appearance: none;
  border: 0;
  background: rgba(255, 255, 255, 0.06);
  color: var(--ink);
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease;
}
.icon-btn:hover { background: var(--gold-soft); color: var(--gold); }
.icon-btn:active { transform: scale(0.97); }
.icon-btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.results {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  border-radius: 16px;
  overflow: auto;
  max-height: min(52vh, 420px);
  display: none;
  z-index: 5;
}
.results.open { display: block; }
.results h3 {
  margin: 0;
  padding: 10px 14px 4px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 500;
}
.results button.item {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  color: var(--ink);
  padding: 10px 14px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 14px;
}
.results button.item:hover,
.results button.item.active { background: rgba(232, 201, 137, 0.1); }
.results .meta { color: var(--muted); font-size: 12px; }
.results .empty { padding: 16px; color: var(--muted); font-size: 13px; }

.top-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}
.top-actions .glass {
  display: flex;
  gap: 4px;
  padding: 8px;
  border-radius: var(--radius);
  min-height: 64px;
  align-items: center;
}
.text-btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--ink);
  padding: 10px 12px;
  border-radius: 12px;
  cursor: pointer;
  font-size: 13px;
  letter-spacing: 0.04em;
}
.text-btn:hover, .text-btn.on { background: var(--gold-soft); color: var(--gold); }
.lang-btn {
  font-weight: 600;
  min-width: 52px;
}

.timebar {
  position: absolute;
  top: 92px;
  left: 16px;
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 8px;
  border-radius: 16px;
}
.timebar input[type="datetime-local"] {
  background: transparent;
  color: var(--ink);
  border: 0;
  outline: none;
  font-size: 13px;
  color-scheme: dark;
  max-width: 210px;
}
.chip {
  appearance: none;
  border: 0;
  background: rgba(255,255,255,0.06);
  color: var(--ink);
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 12px;
  cursor: pointer;
}
.chip.on, .chip:hover { background: var(--gold-soft); color: var(--gold); }

.panel {
  position: absolute;
  left: 16px;
  bottom: 16px;
  width: min(320px, calc(100vw - 32px));
  padding: 14px 16px 12px;
  border-radius: var(--radius);
}
.panel h2 {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 500;
}
.toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0;
  font-size: 14px;
  color: var(--ink);
  cursor: pointer;
}
.toggle input { accent-color: var(--gold); }
.slider-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
}
.slider-row input[type="range"] {
  grid-column: 1 / -1;
  width: 100%;
  accent-color: var(--gold);
}
.help {
  margin: 10px 0 0;
  color: var(--faint);
  font-size: 12px;
  line-height: 1.45;
}

.status {
  position: absolute;
  right: 16px;
  bottom: 16px;
  width: min(280px, calc(100vw - 32px));
  padding: 14px 16px;
  border-radius: var(--radius);
  text-align: right;
}
.status .place {
  font-family: var(--serif);
  font-size: 22px;
  margin: 0;
}
.status .coords, .status .clock {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.04em;
}
.status .sky-note {
  margin: 8px 0 0;
  color: var(--gold);
  font-size: 12px;
}
.compass {
  display: inline-flex;
  gap: 10px;
  margin-top: 10px;
  color: var(--faint);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.info {
  position: absolute;
  right: 16px;
  top: 108px;
  width: min(320px, calc(100vw - 32px));
  padding: 16px 18px 14px;
  border-radius: var(--radius);
  display: none;
}
.info.open { display: block; }
.info .kicker {
  margin: 0;
  color: var(--gold);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.info h3 {
  margin: 4px 0 2px;
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 600;
  line-height: 1.1;
}
.info .aka { margin: 0 0 10px; color: var(--muted); font-size: 14px; }
.info dl {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 6px 10px;
  margin: 0;
  font-size: 13px;
}
.info dt { color: var(--faint); }
.info dd { margin: 0; }
.info .close {
  position: absolute;
  top: 10px;
  right: 10px;
}

.loader, .error-banner {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 10;
  background: radial-gradient(ellipse at 50% 40%, #14172a, #05060d 68%);
}
.loader-card { text-align: center; color: var(--ink); }
.loader-card h2 {
  font-family: var(--serif);
  font-size: 42px;
  margin: 0 0 8px;
  font-weight: 600;
}
.loader-card p { color: var(--muted); }
.stars-pulse {
  width: 84px;
  height: 84px;
  margin: 0 auto 18px;
  background:
    radial-gradient(circle at 20% 30%, #fff 0 2px, transparent 3px),
    radial-gradient(circle at 70% 20%, var(--gold) 0 2px, transparent 3px),
    radial-gradient(circle at 50% 60%, #cde4ff 0 3px, transparent 4px),
    radial-gradient(circle at 80% 70%, #fff 0 1.5px, transparent 2.5px);
  animation: twinkle 1.8s ease-in-out infinite;
}
@keyframes twinkle { 50% { opacity: 0.45; transform: scale(1.06); } }
.error-banner { display: none; }
.error-banner.open { display: grid; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%) translateY(20px);
  background: var(--panel-strong);
  border: 1px solid var(--stroke);
  color: var(--ink);
  padding: 10px 16px;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: 0.25s ease;
  z-index: 12;
  font-size: 13px;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 860px) {
  .topbar {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "brand actions"
      "search search";
  }
  .brand { grid-area: brand; min-height: 52px; padding: 10px 14px; }
  .brand h1 { font-size: 22px; }
  .brand p { display: none; }
  .search-wrap { grid-area: search; }
  .search-box { min-height: 52px; }
  .top-actions { grid-area: actions; }
  .top-actions .glass { min-height: 52px; }
  .timebar { top: auto; bottom: 16px; left: 50%; transform: translateX(-50%); width: max-content; max-width: calc(100vw - 32px); }
  .panel {
    left: 12px;
    bottom: 78px;
    width: min(220px, calc(50vw - 20px));
    max-height: min(52vh, calc(100dvh - 210px));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 10px 12px 12px;
  }
  .panel h2 { margin-bottom: 6px; }
  .toggle { padding: 6px 0; font-size: 13px; }
  .slider-row {
    display: grid;
    margin-top: 8px;
    font-size: 12px;
  }
  .slider-row input[type="range"] {
    height: 28px;
  }
  .panel .help { display: none; }
  .status {
    right: 12px;
    bottom: 78px;
    width: auto;
    text-align: right;
    padding: 10px 12px;
  }
  .status .coords { display: none; }
  .info { top: auto; bottom: 78px; left: 12px; right: 12px; width: auto; }
}

@media (max-width: 520px) {
  .text-btn.full-label { display: none; }
}