:root {
  --bg: #fff7f0;
  --card: #ffffff;
  --ink: #2b2118;
  --muted: #8a7d70;
  --line: #f0e3d6;
  --brand: #ff5a1f;
  --brand2: #ff8a3d;
  --gold: #ffb020;
  --green: #1faa59;
  --shadow: 0 10px 30px rgba(255, 90, 31, 0.12);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.topbar {
  text-align: center;
  padding: 26px 16px 18px;
  background: linear-gradient(135deg, var(--brand), var(--brand2));
  color: #fff;
  box-shadow: var(--shadow);
}
.brand {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 0.5px;
}
.brand-sub {
  font-size: 14px;
  font-weight: 600;
  opacity: 0.85;
  margin-left: 6px;
  vertical-align: middle;
}
.tagline {
  margin-top: 6px;
  font-size: 14px;
  opacity: 0.92;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 18px 14px 40px;
}

.search-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px 16px 20px;
  box-shadow: var(--shadow);
}
.field { margin-bottom: 14px; }
.field label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--ink);
}
.loc-row, .q-row { display: flex; gap: 10px; }
input {
  flex: 1;
  width: 100%;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 15px;
  background: #fffdfb;
  color: var(--ink);
  outline: none;
  transition: border-color 0.15s;
}
input:focus { border-color: var(--brand); }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  border-radius: 12px;
  font-size: 15px;
  transition: transform 0.05s, filter 0.15s;
}
button:active { transform: scale(0.98); }
.ghost {
  flex: 0 0 auto;
  padding: 0 14px;
  background: #fff3ea;
  color: var(--brand);
  border: 1.5px solid #ffd9c2;
  font-weight: 700;
}
.ghost:hover { filter: brightness(0.98); }
.primary {
  width: 100%;
  margin-top: 6px;
  padding: 14px;
  background: linear-gradient(135deg, var(--brand), var(--brand2));
  color: #fff;
  font-weight: 800;
  font-size: 16px;
  box-shadow: 0 8px 20px rgba(255, 90, 31, 0.28);
}
.primary:hover { filter: brightness(1.03); }
.primary:disabled { opacity: 0.6; cursor: not-allowed; }

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}
.chip {
  border: 1px solid var(--line);
  background: #fffaf4;
  color: var(--muted);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 13px;
  cursor: pointer;
}
.chip:hover { border-color: var(--brand); color: var(--brand); }

.banner {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 14px;
  background: #fff8e6;
  border: 1px solid #ffe6a8;
  color: #8a6d1f;
  font-size: 13.5px;
  line-height: 1.6;
}
.banner-tag {
  display: inline-block;
  background: var(--gold);
  color: #5a4400;
  font-weight: 800;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 6px;
  margin-right: 8px;
}

.summary {
  margin-top: 18px;
  background: linear-gradient(135deg, #1faa59, #2bc46a);
  color: #fff;
  border-radius: 16px;
  padding: 16px 18px;
  box-shadow: 0 10px 24px rgba(31, 170, 89, 0.25);
}
.summary .s-title { font-size: 15px; font-weight: 700; opacity: 0.95; }
.summary .s-main { font-size: 22px; font-weight: 800; margin: 6px 0 2px; }
.summary .s-sub { font-size: 13.5px; opacity: 0.95; }

.results {
  margin-top: 14px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
.pcard {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  position: relative;
  box-shadow: 0 4px 14px rgba(43, 33, 24, 0.05);
}
.pcard.cheapest {
  border: 2px solid var(--green);
  box-shadow: 0 8px 22px rgba(31, 170, 89, 0.18);
}
.p-logo {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  background: #fff3ea;
  flex-shrink: 0;
}
.p-main { flex: 1; min-width: 0; }
.p-name { font-size: 16px; font-weight: 800; }
.p-meta { font-size: 12.5px; color: var(--muted); margin-top: 3px; }
.p-meta span { margin-right: 10px; }
.p-price { text-align: right; flex-shrink: 0; }
.p-total { font-size: 22px; font-weight: 800; color: var(--brand); }
.p-total small { font-size: 13px; font-weight: 600; }
.p-break { font-size: 11.5px; color: var(--muted); margin-top: 2px; }
.badge {
  position: absolute;
  top: -10px;
  right: 14px;
  background: var(--green);
  color: #fff;
  font-size: 11.5px;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 999px;
  box-shadow: 0 4px 10px rgba(31, 170, 89, 0.35);
}

.recent {
  margin-top: 20px;
}
.recent h4 { font-size: 14px; margin: 0 0 10px; color: var(--muted); }
.recent .chips .chip { background: #fff; }

.help {
  margin-top: 28px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px 18px;
}
.help h3 { margin: 0 0 8px; font-size: 16px; }
.help-intro { font-size: 13.5px; color: var(--muted); line-height: 1.7; margin: 0 0 8px; }
.help ol { margin: 0; padding-left: 20px; }
.help li { font-size: 13.5px; color: var(--ink); line-height: 1.8; }
.help-note { font-size: 13px; color: var(--muted); line-height: 1.7; margin: 10px 0 0; }
.help code {
  background: #fff3ea;
  color: var(--brand);
  padding: 1px 6px;
  border-radius: 6px;
  font-size: 12.5px;
}

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 12.5px;
  padding: 18px 0 30px;
}
.footer .dot { margin: 0 8px; }

.hidden { display: none !important; }

.loading {
  text-align: center;
  padding: 30px;
  color: var(--muted);
  font-size: 14px;
}
.spinner {
  width: 26px; height: 26px;
  border: 3px solid var(--line);
  border-top-color: var(--brand);
  border-radius: 50%;
  margin: 0 auto 12px;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.err {
  margin-top: 14px;
  background: #fff0ee;
  border: 1px solid #ffd0c4;
  color: #c0392b;
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 13.5px;
}

@media (min-width: 560px) {
  .results { grid-template-columns: 1fr 1fr; }
}