:root {
  --blue: #0b5cff;
  --blue-d: #0846c4;
  --ink: #0f1b2d;
  --ink-2: #44526a;
  --muted: #6b778c;
  --line: #e3e8f0;
  --bg: #f4f6fa;
  --card: #fff;
  --green: #0f9d58;
  --green-bg: #e7f6ee;
  --amber: #b26a00;
  --amber-bg: #fff4e0;
  --red: #c62828;
  --red-bg: #fdecec;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(15, 27, 45, .06), 0 6px 20px rgba(15, 27, 45, .06);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif; color: var(--ink); background: var(--bg); line-height: 1.45; }
a { color: var(--blue); text-decoration: none; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }
[hidden] { display: none !important; }

/* top bar */
.topbar { background: #fff; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 40; }
.topbar-inner { display: flex; align-items: center; gap: 24px; height: 62px; }
.logo { display: flex; align-items: center; gap: 9px; font-size: 21px; color: var(--ink); letter-spacing: -.3px; }
.logo b { color: var(--blue); }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a { color: var(--ink-2); font-weight: 500; font-size: 15px; }
.nav a:hover { color: var(--blue); }
.currency { border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; font: inherit; font-size: 14px; background: #fff; }

/* hero */
.hero { background: radial-gradient(1200px 400px at 80% -10%, #3d7dff 0%, transparent 60%), linear-gradient(160deg, #06173d 0%, #0b2a6b 55%, #0b5cff 130%); color: #fff; padding: 52px 0 40px; }
.hero h1 { font-size: clamp(30px, 4.4vw, 48px); line-height: 1.1; margin: 0 0 12px; letter-spacing: -1px; font-weight: 800; }
.hero h1 span { color: #9cc0ff; }
.hero .sub { font-size: 17px; color: #d3e1ff; max-width: 640px; margin: 0 0 26px; }

.search-card { background: #fff; color: var(--ink); border-radius: 18px; padding: 18px; box-shadow: 0 20px 50px rgba(0, 0, 0, .25); }
.trip-type { display: flex; gap: 18px; margin-bottom: 12px; font-size: 14px; font-weight: 600; }
.trip-type label { display: flex; gap: 6px; align-items: center; cursor: pointer; }
.fields { display: grid; grid-template-columns: 1.3fr auto 1.3fr 1fr 1fr; gap: 10px; align-items: end; }
.fields-2 { grid-template-columns: 1fr 1fr 1.2fr 1.1fr; margin-top: 10px; }
.field { position: relative; display: flex; flex-direction: column; }
.field label { font-size: 12px; font-weight: 600; color: var(--muted); margin: 0 0 5px 2px; text-transform: uppercase; letter-spacing: .4px; }
.field input, .field select { height: 50px; border: 1.5px solid var(--line); border-radius: 10px; padding: 0 12px; font: inherit; font-size: 16px; background: #fff; color: var(--ink); width: 100%; }
.field input:focus, .field select:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(11, 92, 255, .15); }
.field.disabled { opacity: .45; pointer-events: none; }
.hint { cursor: help; }
.swap { height: 40px; width: 40px; margin-bottom: 5px; border-radius: 50%; border: 1.5px solid var(--line); background: #fff; font-size: 18px; cursor: pointer; color: var(--blue); }
.swap:hover { background: #eef3ff; }
.btn-primary { background: var(--blue); color: #fff; border: 0; border-radius: 10px; font: inherit; font-weight: 700; font-size: 16px; padding: 0 22px; height: 50px; cursor: pointer; transition: background .15s; }
.btn-primary:hover { background: var(--blue-d); }
.btn-ghost { background: #eef3ff; color: var(--blue); border: 0; border-radius: 9px; font: inherit; font-weight: 600; padding: 8px 14px; cursor: pointer; }

.ac-list { position: absolute; top: 100%; left: 0; right: 0; z-index: 30; list-style: none; margin: 4px 0 0; padding: 6px; background: #fff; border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); max-height: 300px; overflow: auto; display: none; }
.ac-list.open { display: block; }
.ac-list li { padding: 9px 10px; border-radius: 8px; cursor: pointer; display: flex; gap: 10px; align-items: center; }
.ac-list li.active, .ac-list li:hover { background: #eef3ff; }
.ac-list .code { font-weight: 700; color: var(--blue); width: 38px; }
.ac-list small { color: var(--muted); display: block; }

.pillars { list-style: none; padding: 0; margin: 24px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.pillars li { background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .14); border-radius: 12px; padding: 12px 14px; font-size: 14px; }
.pillars b { display: block; }
.pillars span { color: #bcd0ff; font-size: 13px; }

/* results */
#resultsWrap { padding-top: 24px; }
.banner { border-radius: 10px; padding: 10px 14px; font-size: 14px; margin-bottom: 14px; }
.banner.demo { background: var(--amber-bg); color: var(--amber); border: 1px solid #f3d9a8; }
.banner.live { background: var(--green-bg); color: var(--green); border: 1px solid #bfe6cf; }
.strip-wrap { display: grid; grid-template-columns: 1fr 300px; gap: 14px; margin-bottom: 18px; }
.date-strip { position: relative; display: grid; grid-template-columns: repeat(7, 1fr); background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.date-strip button { border: 0; border-right: 1px solid var(--line); background: #fff; padding: 12px 6px; cursor: pointer; font: inherit; text-align: center; }
.date-strip button:last-child { border-right: 0; }
.date-strip button:hover { background: #f5f8ff; }
.date-strip button.sel { background: #eef3ff; box-shadow: inset 0 -3px 0 var(--blue); }
.date-strip .d { font-size: 12px; color: var(--muted); display: block; }
.date-strip .p { font-weight: 700; font-size: 15px; }
.date-strip .low .p { color: var(--green); }
.deal-meter { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 12px 16px; font-size: 14px; }
.deal-meter .label { font-weight: 700; font-size: 16px; }
.deal-meter .bar { height: 8px; border-radius: 4px; background: linear-gradient(90deg, #0f9d58, #f2b705, #e53935); margin: 8px 0 4px; position: relative; }
.deal-meter .dot { position: absolute; top: -4px; width: 16px; height: 16px; border-radius: 50%; background: #fff; border: 3px solid var(--ink); transform: translateX(-50%); }

.results-layout { display: grid; grid-template-columns: 250px 1fr; gap: 20px; align-items: start; }
.filters { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; position: sticky; top: 76px; }
.filters h3 { margin: 0 0 8px; font-size: 16px; }
.filters fieldset { border: 0; border-top: 1px solid var(--line); padding: 12px 0 4px; margin: 0; }
.filters legend { font-weight: 600; font-size: 13px; color: var(--ink-2); padding: 0; margin-bottom: 6px; display: flex; justify-content: space-between; width: 100%; }
.filters label { display: flex; gap: 8px; align-items: center; font-size: 14px; padding: 3px 0; cursor: pointer; }
.filters label .from { margin-left: auto; color: var(--muted); font-size: 12px; }
.filters input[type=range] { width: 100%; }
.filters select { width: 100%; padding: 7px; border-radius: 8px; border: 1px solid var(--line); font: inherit; font-size: 14px; }

.sort-tabs { display: grid; grid-template-columns: repeat(3, 1fr); background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; margin-bottom: 14px; }
.sort-tabs button { border: 0; background: #fff; padding: 12px 14px; text-align: left; cursor: pointer; font: inherit; border-right: 1px solid var(--line); }
.sort-tabs button:last-child { border-right: 0; }
.sort-tabs button.sel { box-shadow: inset 0 -3px 0 var(--blue); background: #f8faff; }
.sort-tabs .t { font-weight: 700; display: block; }
.sort-tabs .s { color: var(--muted); font-size: 13px; }

.card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 12px; border: 1.5px solid transparent; transition: border-color .15s; }
.card:hover { border-color: #cfdcf7; }
.card-main { display: grid; grid-template-columns: 1fr 210px; }
.itin { padding: 16px 18px; }
.itin-row { display: grid; grid-template-columns: 44px 1fr; gap: 12px; align-items: center; }
.al-logo { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; font-weight: 800; color: #fff; font-size: 14px; }
.al-name { font-size: 13px; color: var(--muted); margin-top: 2px; }
.times { display: grid; grid-template-columns: auto 1fr auto; gap: 14px; align-items: center; }
.time { font-size: 20px; font-weight: 700; }
.time small { font-size: 12px; color: var(--muted); font-weight: 500; display: block; }
.time sup { color: var(--red); font-size: 11px; margin-left: 2px; }
.path { text-align: center; font-size: 12px; color: var(--muted); }
.path .line { height: 2px; background: var(--line); margin: 5px 0; position: relative; }
.path .line i { position: absolute; top: -3px; width: 8px; height: 8px; border-radius: 50%; background: var(--amber); transform: translateX(-50%); }
.path .stops0 { color: var(--green); font-weight: 600; }
.path .stops1, .path .stops2 { color: var(--amber); font-weight: 600; }
.badges { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.badge { font-size: 12px; padding: 3px 8px; border-radius: 6px; font-weight: 500; }
.badge.high { background: var(--red-bg); color: var(--red); }
.badge.med { background: var(--amber-bg); color: var(--amber); }
.badge.low, .badge.info { background: #f0f3f8; color: var(--ink-2); }
.badge.good { background: var(--green-bg); color: var(--green); }
.price-col { border-left: 1px solid var(--line); padding: 16px 18px; display: flex; flex-direction: column; justify-content: center; gap: 4px; }
.price { font-size: 24px; font-weight: 800; letter-spacing: -.5px; }
.price-sub { font-size: 12px; color: var(--muted); }
.site-line { font-size: 13px; color: var(--ink-2); }
.stars { color: #f2a900; letter-spacing: -1px; }
.price-col .btn-primary { height: 42px; font-size: 15px; margin-top: 6px; }
.more { background: none; border: 0; color: var(--blue); font: inherit; font-size: 13px; font-weight: 600; cursor: pointer; padding: 4px 0 0; text-align: left; }
.offers { border-top: 1px solid var(--line); padding: 8px 18px 14px; display: none; }
.card.open .offers { display: block; }
.offer { display: grid; grid-template-columns: 1.4fr 1.6fr auto auto; gap: 12px; align-items: center; padding: 10px 0; border-bottom: 1px dashed var(--line); font-size: 14px; }
.offer:last-child { border-bottom: 0; }
.offer .breakdown { color: var(--muted); font-size: 12px; }
.offer .tot { font-weight: 700; font-size: 16px; text-align: right; }
.offer a { padding: 8px 14px; }
.fresh { font-size: 11px; color: var(--muted); }

.sponsored-card { border: 1.5px dashed #c9d3e3; background: #fbfcfe; }
.ad-tag { display: inline-block; font-size: 11px; font-weight: 700; color: var(--muted); border: 1px solid var(--muted); border-radius: 4px; padding: 0 5px; margin-right: 6px; }
.sponsored-head { padding: 10px 18px 0; font-size: 12px; color: var(--muted); }

.empty { background: #fff; border-radius: var(--radius); padding: 40px; text-align: center; box-shadow: var(--shadow); }
.loading .card { height: 120px; background: linear-gradient(90deg, #fff 0%, #f1f4f9 50%, #fff 100%); background-size: 200% 100%; animation: sh 1.2s infinite; }
@keyframes sh { to { background-position: -200% 0; } }

.cross { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 20px; }
.cross a { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; color: var(--ink); display: block; }
.cross a:hover { box-shadow: 0 0 0 2px var(--blue); }
.cross b { display: block; margin-bottom: 4px; }
.cross span { font-size: 13px; color: var(--muted); }

/* sections */
.section { padding: 46px 20px 10px; }
.section h2 { font-size: 26px; margin: 0 0 6px; letter-spacing: -.4px; }
.route-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 16px; }
.route { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; cursor: pointer; border: 1.5px solid transparent; text-align: left; font: inherit; color: inherit; }
.route:hover { border-color: var(--blue); }
.route .r { font-weight: 700; }
.route .c { font-size: 13px; color: var(--muted); }
.route .p { margin-top: 8px; color: var(--green); font-weight: 700; }
.how-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 16px; }
.how-grid > div { background: #fff; border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.how-grid h4 { margin: 0 0 6px; }
.how-grid p { margin: 0; font-size: 14px; color: var(--ink-2); }
.alerts { display: grid; grid-template-columns: 1fr 1.3fr; gap: 20px; align-items: center; background: #fff; border-radius: 18px; box-shadow: var(--shadow); margin-top: 46px; padding: 28px; }
.alert-form { display: grid; grid-template-columns: 1fr 1fr auto; gap: 10px; }
.alert-form input { height: 50px; border: 1.5px solid var(--line); border-radius: 10px; padding: 0 12px; font: inherit; }
.footer { margin-top: 50px; background: #0b1730; color: #c7d2e6; padding: 26px 0; font-size: 14px; }
.footer-inner { display: flex; flex-direction: column; gap: 6px; }
.footer .muted { color: #8794ad; }
.toast { position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%) translateY(120px); background: var(--ink); color: #fff; padding: 12px 18px; border-radius: 10px; transition: transform .25s; z-index: 60; font-size: 14px; }
.toast.show { transform: translateX(-50%) translateY(0); }

.filter-toggle { display: none; }

@media (max-width: 960px) {
  .fields { grid-template-columns: 1fr auto 1fr; }
  .fields .field:nth-child(4), .fields .field:nth-child(5) { grid-column: span 1; }
  .fields-2 { grid-template-columns: 1fr 1fr; }
  .pillars, .how-grid, .route-grid { grid-template-columns: repeat(2, 1fr); }
  .results-layout { grid-template-columns: 1fr; }
  .filters { position: static; display: none; }
  .filters.open { display: block; }
  .filter-toggle { display: inline-block; margin-bottom: 12px; }
  .strip-wrap { grid-template-columns: 1fr; }
  .alerts { grid-template-columns: 1fr; }
  .nav { display: none; }
  .currency { margin-left: auto; }
}
@media (max-width: 640px) {
  .fields { grid-template-columns: 1fr; }
  .swap { justify-self: end; margin: -6px 0 -6px; transform: rotate(90deg); }
  .card-main { grid-template-columns: 1fr; }
  .price-col { border-left: 0; border-top: 1px solid var(--line); }
  .offer { grid-template-columns: 1fr auto; }
  .offer .breakdown { grid-column: 1 / -1; }
  .date-strip { overflow-x: auto; grid-template-columns: repeat(7, 84px); }
  .cross, .alert-form { grid-template-columns: 1fr; }
  .sort-tabs .s { display: block; }
}