:root {
  color-scheme: light;
  --ink: #0b1f33;
  --muted: #5b6b7c;
  --line: #e3e9f0;
  --bg: #f5f8fb;
  --card: #ffffff;
  --brand: #0f766e;
  --brand-dark: #0b5c55;
  --brand-soft: #ecfdf5;
  --accent: #ea6a12;
  --accent-soft: #fff4e8;
  --ok: #047857;
  --err: #b42318;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(11, 31, 51, .06), 0 14px 34px rgba(11, 31, 51, .08);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg); color: var(--ink); line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: min(1140px, calc(100% - 40px)); margin: 0 auto; }

/* header */
.site-header { background: #fff; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 30; }
.site-header .wrap { min-height: 66px; display: flex; align-items: center; gap: 22px; }
.logo { display: flex; align-items: center; gap: 9px; font-weight: 800; font-size: 18px; color: var(--ink); letter-spacing: -.3px; }
.logo:hover { text-decoration: none; }
.logo-mark {
  width: 30px; height: 30px; border-radius: 9px;
  background: linear-gradient(135deg, var(--brand), #0891b2);
  color: #fff; display: grid; place-items: center; font-weight: 900; font-size: 15px;
}
.nav { display: flex; align-items: center; gap: 22px; margin-left: auto; flex-wrap: wrap; }
.nav a { color: var(--muted); font-size: 14.5px; font-weight: 600; }
.nav a:hover, .nav a.active { color: var(--ink); text-decoration: none; }

/* hero */
.hero { background: linear-gradient(150deg, #0b1f33 0%, #0d4b4a 58%, #0f766e 100%); color: #fff; padding: 54px 0 74px; }
.hero h1 { margin: 0 0 12px; font-size: clamp(30px, 4vw, 44px); line-height: 1.12; letter-spacing: -1.1px; }
.hero p { margin: 0 0 26px; color: #cfe3e0; font-size: 16.5px; max-width: 560px; }
.eyebrow { display: inline-block; background: rgba(255, 255, 255, .14); border-radius: 999px; padding: 5px 13px; font-size: 12.5px; font-weight: 700; letter-spacing: .4px; text-transform: uppercase; margin-bottom: 16px; }

/* search card */
.search-card {
  background: var(--card); border-radius: 18px; box-shadow: var(--shadow);
  padding: 22px; color: var(--ink); margin-top: -56px; position: relative; z-index: 5;
}
.tabs { display: flex; gap: 8px; margin-bottom: 18px; flex-wrap: wrap; }
.tab {
  border: 1px solid var(--line); background: #fff; border-radius: 999px;
  padding: 9px 18px; font-size: 14.5px; font-weight: 700; color: var(--muted);
  cursor: pointer; font-family: inherit;
}
.tab.active { background: var(--brand); border-color: var(--brand); color: #fff; }

.fields { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; align-items: end; }
.fields.flights { grid-template-columns: 1.2fr 1.2fr 1fr 1fr .9fr .9fr; }
.field { display: grid; gap: 6px; min-width: 0; }
.field label { font-size: 12px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .4px; }
.field input, .field select {
  width: 100%; min-height: 44px; border: 1px solid #d5dee8; border-radius: 10px;
  padding: 0 11px; font-size: 15px; font-family: inherit; color: var(--ink); background: #fff;
}
.field input:focus, .field select:focus { outline: 3px solid rgba(15, 118, 110, .16); border-color: var(--brand); }
.search-actions { display: flex; justify-content: flex-end; margin-top: 16px; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 0 22px; border: 0; border-radius: 11px; cursor: pointer;
  background: var(--accent); color: #fff; font-size: 15.5px; font-weight: 800; font-family: inherit;
  transition: filter .15s ease, transform .05s ease;
}
.btn:hover { filter: brightness(1.06); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: .6; cursor: not-allowed; }
.btn.secondary { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn.secondary:hover { background: #f8fafc; }
.btn.small { min-height: 38px; padding: 0 16px; font-size: 14px; border-radius: 9px; }
.btn.block { width: 100%; }

/* sections */
.section { padding: 48px 0; }
.section-head h2 { margin: 0 0 6px; font-size: 25px; letter-spacing: -.6px; }
.section-head p { margin: 0 0 24px; color: var(--muted); }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.feature h3 { margin: 0 0 6px; font-size: 16px; }
.feature p { margin: 0; color: var(--muted); font-size: 14px; }
.feature .ico { font-size: 22px; margin-bottom: 10px; }

.dest-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.dest {
  border-radius: var(--radius); overflow: hidden; color: #fff; padding: 22px;
  min-height: 132px; display: flex; flex-direction: column; justify-content: flex-end;
  background: linear-gradient(140deg, #0b1f33, #0f766e);
}
.dest:nth-child(2n) { background: linear-gradient(140deg, #134e4a, #0891b2); }
.dest:nth-child(3n) { background: linear-gradient(140deg, #7c2d12, #ea6a12); }
.dest:nth-child(4n) { background: linear-gradient(140deg, #1e293b, #0d9488); }
.dest b { font-size: 17px; }
.dest span { font-size: 13px; opacity: .85; }

/* results */
.results-head { background: #fff; border-bottom: 1px solid var(--line); padding: 22px 0; }
.results-head h1 { margin: 0 0 4px; font-size: 24px; letter-spacing: -.5px; }
.results-head p { margin: 0; color: var(--muted); font-size: 14.5px; }
.results-layout { display: grid; grid-template-columns: 250px 1fr; gap: 22px; padding: 26px 0 60px; }
.filters { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; height: fit-content; position: sticky; top: 88px; }
.filters h3 { margin: 0 0 12px; font-size: 14px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); }
.filters .group { margin-bottom: 18px; }
.filters label { display: flex; align-items: center; gap: 9px; font-size: 14.5px; margin-bottom: 9px; cursor: pointer; }
.filters input[type="range"] { width: 100%; }
.sort-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 16px; flex-wrap: wrap; }
.sort-row .count { color: var(--muted); font-size: 14px; }
.sort-row select { min-height: 40px; border: 1px solid #d5dee8; border-radius: 9px; padding: 0 10px; font-family: inherit; font-size: 14px; background: #fff; }

.list { display: grid; gap: 16px; }
.result {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px; display: grid; gap: 16px;
}
.result.flight { grid-template-columns: 1.6fr 1fr; align-items: center; }
.result.hotel { grid-template-columns: 1.7fr 1fr; align-items: center; }
.airline { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.airline .badge {
  width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center;
  color: #fff; font-weight: 800; font-size: 12px; letter-spacing: .3px;
}
.airline .name { font-weight: 700; font-size: 14.5px; }
.airline .num { color: var(--muted); font-size: 13px; }

.leg { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: center; }
.leg .time { font-size: 19px; font-weight: 800; letter-spacing: -.3px; }
.leg .place { color: var(--muted); font-size: 13px; }
.leg .mid { text-align: center; color: var(--muted); font-size: 12.5px; min-width: 92px; }
.leg .line { height: 1px; background: var(--line); margin: 5px 0; position: relative; }
.leg .line::before, .leg .line::after { content: ""; position: absolute; top: -2px; width: 5px; height: 5px; border-radius: 50%; background: var(--muted); }
.leg .line::before { left: 0; } .leg .line::after { right: 0; }
.leg + .leg { margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--line); }

.price-box { text-align: right; display: grid; gap: 4px; justify-items: end; }
.price-box .total { font-size: 25px; font-weight: 800; letter-spacing: -.8px; }
.price-box .per { color: var(--muted); font-size: 12.5px; }

.hotel-name { margin: 0 0 4px; font-size: 17.5px; }
.hotel-meta { color: var(--muted); font-size: 13.5px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.rating { background: var(--brand); color: #fff; border-radius: 7px; padding: 2px 8px; font-size: 13px; font-weight: 800; }
.amenities { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 10px; }
.chip { background: #f1f5f9; border-radius: 999px; padding: 3px 10px; font-size: 12.5px; color: var(--muted); }

/* detail */
.detail-layout { display: grid; grid-template-columns: 1fr 340px; gap: 24px; padding: 28px 0 64px; align-items: start; }
.panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.panel h2 { margin: 0 0 14px; font-size: 19px; }
.summary { position: sticky; top: 90px; }
.summary .row { display: flex; justify-content: space-between; gap: 14px; font-size: 14.5px; margin-bottom: 10px; color: var(--muted); }
.summary .row b { color: var(--ink); }
.summary .total-row { border-top: 1px solid var(--line); margin-top: 14px; padding-top: 14px; display: flex; justify-content: space-between; align-items: baseline; }
.summary .total-row b { font-size: 24px; letter-spacing: -.6px; }

.room-row { display: grid; grid-template-columns: 1fr auto; gap: 16px; padding: 16px 0; border-top: 1px solid var(--line); align-items: center; }
.room-row:first-of-type { border-top: 0; }
.room-row h4 { margin: 0 0 3px; font-size: 15.5px; }
.room-row p { margin: 0; color: var(--muted); font-size: 13px; }

/* forms */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field.inline { display: grid; }
.form-msg { min-height: 22px; font-size: 14px; font-weight: 600; margin: 6px 0 14px; }
.form-msg.err { color: var(--err); }
.form-msg.ok { color: var(--ok); }

/* confirmation */
.confirm-card { max-width: 680px; margin: 42px auto 70px; background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); padding: 32px; }
.confirm-badge { width: 54px; height: 54px; border-radius: 50%; background: var(--brand-soft); color: var(--ok); display: grid; place-items: center; font-size: 26px; margin-bottom: 16px; }
.confirm-card h1 { margin: 0 0 6px; font-size: 26px; letter-spacing: -.6px; }
.ref-box { background: #f8fafc; border: 1px dashed #cbd5e1; border-radius: 12px; padding: 14px 16px; margin: 18px 0; display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.ref-box b { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 19px; letter-spacing: 1px; }
.kv { display: grid; grid-template-columns: 130px 1fr; gap: 8px 14px; font-size: 14.5px; margin-bottom: 18px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-weight: 600; }

/* footer */
.site-footer { border-top: 1px solid var(--line); background: #fff; padding: 26px 0; margin-top: 40px; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; color: var(--muted); font-size: 13.5px; }

.empty { text-align: center; color: var(--muted); padding: 40px 20px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.spinner { display: grid; place-items: center; padding: 50px; color: var(--muted); }

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

@media (max-width: 980px) {
  .fields, .fields.flights { grid-template-columns: repeat(2, 1fr); }
  .results-layout { grid-template-columns: 1fr; }
  .filters { position: static; }
  .detail-layout { grid-template-columns: 1fr; }
  .summary { position: static; }
  .features, .dest-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .fields, .fields.flights { grid-template-columns: 1fr; }
  .result.flight, .result.hotel { grid-template-columns: 1fr; }
  .price-box { justify-items: start; text-align: left; }
  .form-grid { grid-template-columns: 1fr; }
  .dest-grid, .features { grid-template-columns: 1fr; }
  .search-card { margin-top: -40px; padding: 16px; }
}