:root {
  --bg: #0f1220;
  --card: #171a2b;
  --ink: #e6e9ff;
  --muted: #a9b0d6;
  --brand: #5ac8fa;
  --ok: #34c759;
  --warn: #ff9500;
  --err: #ff3b30;
  --border: #2a2f4a;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Noto Sans TC, Helvetica, Arial, "Microsoft JhengHei", sans-serif;
  background: linear-gradient(180deg, #0b0e1a, #12162a);
  color: var(--ink);
}
header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  background: rgba(15, 18, 32, .7);
  border-bottom: 1px solid var(--border);
  padding: 10px 14px;
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap; /* Added for better wrapping on small screens */
}
header .title { font-weight: 700; letter-spacing: .5px; }
header .actions { display: flex; gap: 8px; flex-wrap: wrap; }
button {
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 14px;
  cursor: pointer;
  font-weight: 600;
}
button.primary { border-color: transparent; background: linear-gradient(135deg, #3844ff, #5ac8fa); }
button.ghost { background: transparent; }
button:disabled { opacity: .5; cursor: not-allowed; }
main { max-width: 1100px; margin: 0 auto; padding: 14px; }
.grid { display: grid; gap: 14px; }

/* Desktop: 2-column layout. Mobile: single-column (default) */
@media(min-width: 900px) {
  .grid {
    /* Slightly wider query panel */
    grid-template-columns: minmax(360px, 420px) 1fr;
  }
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
}
.search-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.input {
  flex: 1;
  position: relative;
  background: #0e1122;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.input input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--ink);
  width: 100%;
  font-size: 16px;
  letter-spacing: 1px;
}
.kbd { background: #0e1122; border: 1px solid var(--border); border-radius: 10px; padding: 6px 10px; color: var(--muted); }
.hint { color: var(--muted); font-size: 13px; }
.pill { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--border); padding: 6px 10px; border-radius: 999px; color: var(--muted); }
.list { display: flex; flex-direction: column; gap: 10px; margin-top: 8px; }
.item {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #0e1122;
}
.mono { font-variant-numeric: tabular-nums; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.eta-chip { padding: 4px 8px; border-radius: 10px; background: #0b132a; border: 1px solid var(--border); }
.eta-chip.ok { background: rgba(52, 199, 89, .1); border-color: #245c36; color: #9af0b8; }
.eta-chip.warn { background: rgba(255, 149, 0, .1); border-color: #5e3b05; color: #ffd499; }
.eta-chip.none { opacity: .6; }
.section-title { font-weight: 700; margin: 2px 0 6px; }
.stop-name { font-weight: 600; }
.muted { color: var(--muted); }
.route-tag { font-weight: 800; font-size: 18px; letter-spacing: 1px; }
.divider { height: 1px; background: var(--border); margin: 8px 0; }

/* Virtual Keyboard */
.vk { display: none; margin-top: 8px; user-select: none; }
.vk.show { display: block; }
.vk-row { display: flex; gap: 6px; margin-bottom: 6px; flex-wrap: wrap; }
.vk button { flex: 1 0 auto; min-width: 42px; padding: 10px; border-radius: 10px; }

/* Location Hint */
.loc { display: flex; gap: 8px; align-items: center; }
.badge { background: #0b132a; border: 1px solid var(--border); padding: 4px 8px; border-radius: 8px; }
.small { font-size: 12px; }
.foot { margin-top: 16px; color: var(--muted); font-size: 12px; }
.ad { margin: 10px 0; }
.lang { cursor: pointer; }


/* --- NEW: Loader Styles --- */
.loader-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 18, 32, .9);
  backdrop-filter: blur(5px);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-weight: 600;
  color: var(--muted);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease;
}
.loader-overlay.show {
  opacity: 1;
  pointer-events: all;
}
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border);
  border-top-color: var(--brand);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}