/* ============ Design tokens ============ */
:root {
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: ui-monospace, 'SF Mono', 'Cascadia Code', Menlo, monospace;
  --navy: #0e2a47;
  --navy-2: #17456f;
  --accent: #1668c0;
  --bg: #eef2f6;
  --surface: #ffffff;
  --surface-2: #f5f8fb;
  --border: #e3e9f0;
  --border-2: #cfd9e6;
  --ink: #14202f;
  --muted: #5c6b7d;
  --heading: #0e2a47;
  --link: #1668c0;
  --good: #1a7f37;
  --good-bg: #e8f6ec;
  --warn: #b26a00;
  --warn-bg: #fff5e5;
  --bad: #c62131;
  --shadow-sm: 0 1px 2px rgba(16,40,70,.06), 0 1px 3px rgba(16,40,70,.09);
  --shadow: 0 2px 6px rgba(16,40,70,.07), 0 12px 32px rgba(16,40,70,.08);
  --radius: 14px;
  --radius-sm: 9px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --navy: #0a1d33;
    --navy-2: #123255;
    --accent: #4f9be8;
    --bg: #0c131c;
    --surface: #141e2b;
    --surface-2: #1a2634;
    --border: #263647;
    --border-2: #33475d;
    --ink: #e6edf4;
    --muted: #93a4b6;
    --heading: #eaf1f8;
    --link: #6bb1f2;
    --good: #46c568;
    --good-bg: #10321c;
    --warn: #e0a44a;
    --warn-bg: #2b2210;
    --bad: #ff6b7a;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
    --shadow: 0 2px 6px rgba(0,0,0,.35), 0 12px 32px rgba(0,0,0,.35);
  }
}

/* ============ Base ============ */
* { box-sizing: border-box; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  margin: 0;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
#app { flex: 1 0 auto; }
footer { flex-shrink: 0; }
a { color: var(--link); }
h1, h2, h3 { color: var(--heading); line-height: 1.25; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 1.25rem; }

/* ============ Top nav ============ */
.topnav {
  position: sticky; top: 0; z-index: 50;
  background: var(--navy); color: #fff;
  box-shadow: 0 1px 0 rgba(255,255,255,.05), 0 2px 14px rgba(0,0,0,.18);
}
.nav-inner {
  max-width: 1180px; margin: 0 auto; padding: .7rem 1.25rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.brand {
  display: flex; align-items: center; gap: .55rem;
  color: #fff; text-decoration: none; font-size: 1.05rem; font-weight: 500; letter-spacing: .2px;
}
.brand svg { width: 22px; height: 22px; flex: none; color: #cfe0f2; transform: rotate(45deg); }
.brand b { font-weight: 700; }
.nav-links { display: flex; align-items: center; gap: .9rem; font-size: .9rem; }
.nav-links a { color: #c6d8ea; text-decoration: none; }
.nav-links a:hover { color: #fff; }
.nav-tag {
  font-size: .68rem; text-transform: uppercase; letter-spacing: .07em;
  background: rgba(255,255,255,.14); color: #dbe7f4;
  padding: .2rem .55rem; border-radius: 999px;
}

/* ============ Hero + search ============ */
.hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-2) 100%);
  color: #fff; padding: 2.6rem 1.25rem 3.6rem; text-align: center;
}
.hero-inner { max-width: 1180px; margin: 0 auto; }
.hero h1 { color: #fff; margin: 0 0 .55rem; font-size: 2rem; font-weight: 700; letter-spacing: -.015em; }
.hero .subtitle { color: rgba(255,255,255,.82); margin: 0 auto; max-width: 660px; font-size: 1.02rem; }
.hero-slim { padding: 1.8rem 1.25rem; }
.hero-slim h1 { font-size: 1.6rem; }

.searchcard {
  background: var(--surface); color: var(--ink);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 1.1rem 1.15rem; margin: 1.7rem auto -2.7rem; max-width: 840px; text-align: left;
}
.tabs {
  display: inline-flex; background: var(--surface-2);
  border: 1px solid var(--border); border-radius: 999px; padding: .25rem; gap: .12rem; margin-bottom: .9rem;
}
.tabs label {
  cursor: pointer; font-size: .9rem; font-weight: 500; color: var(--muted);
  padding: .42rem 1rem; border-radius: 999px; line-height: 1; display: inline-flex; align-items: center;
  transition: background .15s, color .15s;
}
.tabs input { position: absolute; opacity: 0; width: 0; height: 0; }
.tabs label:has(input:checked) { background: var(--accent); color: #fff; box-shadow: 0 1px 4px rgba(22,104,192,.45); }
.tabs label:hover:not(:has(input:checked)) { color: var(--ink); }

.searchrow { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; }
.field { display: flex; align-items: center; gap: .45rem; }
.field[hidden] { display: none; }
.field .arrow { color: var(--muted); font-size: 1.1rem; }
.searchcard input {
  font: inherit; font-size: .95rem; padding: .55rem .75rem;
  border: 1px solid var(--border-2); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--ink); min-width: 0;
}
.searchcard input::placeholder { color: #9aa8b8; }
.searchcard input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(22,104,192,.18); }
#number { width: 11rem; }
#lastname { width: 9rem; }
.searchcard button[type=submit] {
  font: inherit; font-weight: 600; font-size: .95rem;
  background: var(--accent); color: #fff; border: none; border-radius: var(--radius-sm);
  padding: .58rem 1.4rem; cursor: pointer; transition: filter .15s;
}
.searchcard button[type=submit]:hover { filter: brightness(1.08); }

/* ============ Results ============ */
#app { padding-top: 3.7rem; padding-bottom: 2.5rem; }
#app:empty { padding-top: 3.2rem; }
#app section {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-sm);
  padding: 1.15rem 1.3rem; margin: 0 0 1.1rem;
}
#app section.status { border-top: 3px solid var(--accent); }
#app h2 { font-size: 1.35rem; margin: .1rem 0 .55rem; }
#app h3 {
  font-size: .82rem; text-transform: uppercase; letter-spacing: .05em;
  color: var(--muted); font-weight: 700; margin: 0 0 .6rem;
  padding-bottom: .4rem; border-bottom: 1px solid var(--border);
}
#app .details h3 { margin-bottom: .4rem; }
.err { color: var(--bad); font-weight: 500; }

/* status badge */
.badge { color: #fff; padding: .18rem .6rem; border-radius: 999px; font-size: .82rem; font-weight: 600; }

/* cabin load bars */
.cabin { display: grid; grid-template-columns: 8rem 1fr auto; gap: .6rem; align-items: center; margin: .35rem 0; }
.track { background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px; height: 11px; overflow: hidden; }
.fill { background: var(--good); height: 100%; border-radius: 999px; }

/* generic tables */
table { border-collapse: collapse; width: 100%; }
th, td { border-bottom: 1px solid var(--border); padding: .3rem .45rem; text-align: left; font-size: .9rem; }

/* route rows */
.routerow {
  display: grid; grid-template-columns: 5.5rem 1fr auto; gap: .75rem; align-items: center;
  width: 100%; text-align: left; padding: .55rem .8rem; margin: .35rem 0;
  cursor: pointer; background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--ink); font: inherit; transition: border-color .15s, background .15s;
}
.routerow:hover { border-color: var(--accent); background: var(--surface); }
.rr-flight { font-weight: 700; }
.rr-time { font-variant-numeric: tabular-nums; color: var(--ink); }
.rr-time .rr-arrow { color: var(--muted); margin: 0 .2rem; }
.rr-time sup { color: var(--muted); font-size: .7em; margin-left: .1rem; }
.rr-time s.sch { color: var(--muted); text-decoration: line-through; margin-right: .25rem; }
.rr-time .revised { font-weight: 600; }
.rr-time .revised.late { color: var(--bad); }
.rr-time .revised.early { color: var(--good); }
.rr-status { font-weight: 600; font-size: .85rem; text-align: right; white-space: nowrap; }
.apname { color: var(--muted); font-weight: 400; font-size: .62em; }
h2 .rr-arrow { color: var(--muted); font-weight: 400; }
.itin { margin: .35rem 0; }
.itin.connection {
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: .1rem .55rem .55rem; margin: .6rem 0; background: rgba(22,104,192,.035);
}
.itin.connection .routerow { background: var(--surface); }
.itin-head { font-size: .78rem; color: var(--muted); font-weight: 600; padding: .45rem .3rem .15rem; }

/* standby */
tr.confirmed { background: var(--good-bg); }
tr.confirmed td:nth-child(3) { color: var(--good); font-weight: 600; }
.sbsummary { color: var(--muted); font-size: .85rem; margin: .3rem 0; }
.sortby { margin-left: .75rem; }
.sortbtn {
  padding: .2rem .6rem; margin: 0 .12rem; border: 1px solid var(--border-2);
  background: var(--surface-2); color: var(--ink); border-radius: 999px; cursor: pointer; font-size: .8rem;
}
.sortbtn.active { background: var(--good); color: #fff; border-color: var(--good); }

/* trip segments / pax */
.tripseg { padding: .5rem 0; border-bottom: 1px solid var(--border); }
.tripseg.flown { opacity: .55; }
.cabin-tag { color: var(--muted); font-size: .8rem; margin-left: .4rem; }
.mode-trip input { margin-right: 0; }
.standby-tag {
  color: var(--warn); font-size: .8rem; margin-left: .4rem;
  border: 1px solid var(--warn); border-radius: 999px; padding: .05rem .45rem;
}
.paxblock { padding: .6rem 0; border-bottom: 1px solid var(--border); line-height: 1.6; }
.paxblock:last-child { border-bottom: none; }

/* action links */
.actions { display: flex; gap: .9rem; flex-wrap: wrap; margin-top: .3rem; }
.actions a, .sbsummary a { color: var(--link); }

/* generic small button */
.btn {
  padding: .35rem .8rem; border: 1px solid var(--border-2); background: var(--surface-2);
  color: var(--ink); border-radius: var(--radius-sm); cursor: pointer; font: inherit; font-size: .88rem;
}
.btn:hover { border-color: var(--accent); }

/* amenities */
.amenities { display: flex; gap: .45rem; flex-wrap: wrap; margin-top: .5rem; }
.amenity { font-size: .78rem; padding: .15rem .55rem; border-radius: 999px; border: 1px solid var(--border-2); color: var(--muted); }
.amenity.yes { background: var(--good-bg); border-color: var(--good); color: var(--good); }
.amenity.no { background: var(--surface-2); color: #9aa8b8; }
.amenity a { color: inherit; text-decoration: none; }

/* flight timing/detail lines */
.times { margin: .2rem 0; }
.delay { color: var(--bad); font-weight: 600; }
.early { color: var(--good); font-weight: 600; }
.convo { color: var(--warn); font-weight: 600; margin: .25rem 0; }
.depcountdown {
  display: inline-block; font-weight: 600; margin: .4rem 0; color: var(--accent);
  background: rgba(22,104,192,.09); padding: .25rem .7rem; border-radius: 999px; font-size: .92rem;
}
.boarding { color: var(--muted); margin: .25rem 0; }
.inbound-link { color: var(--link); }
.gate { margin: .25rem 0; }
.detail { margin: .2rem 0; color: var(--muted); font-size: .92rem; }
.reason {
  white-space: pre-line; background: var(--warn-bg); border-left: 3px solid var(--warn);
  padding: .5rem .7rem; margin: .5rem 0; font-size: .9rem; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.rcode { font-family: var(--mono); font-size: .8rem; color: var(--warn); }

/* ============ Seat map ============ */
.seatmap { display: inline-block; }
.seatrow { display: flex; align-items: center; gap: 3px; margin: 2px 0; }
.seatrow.exit { border-top: 2px dashed var(--warn); padding-top: 3px; }
.rownum { width: 1.6rem; text-align: right; font-size: .7rem; color: var(--muted); margin-right: .3rem; }
.seat {
  display: inline-flex; align-items: center; justify-content: center; width: 1.5rem; height: 1.5rem;
  font-size: .65rem; border-radius: 5px; color: #333;
}
.seat.available { background: #bfe6c6; border: 1px solid var(--good); color: #14401f; }
.seat.occupied { background: #b7b7b7; color: #f3f3f3; border: 1px solid #9a9a9a; }
.seat.blocked {
  background: repeating-linear-gradient(45deg, #f6d9c4, #f6d9c4 4px, #e0895a 4px, #e0895a 8px);
  color: #6e3312; border: 1px solid #cf6a2c; font-weight: 700;
}
.seat.none, .aisle { width: 1.5rem; height: 1.5rem; background: transparent; }
.aisle { width: .8rem; }
.seatlegend { margin-left: .6rem; }
.seatlegend i { display: inline-block; width: .9rem; height: .9rem; vertical-align: middle; margin: 0 .15rem 0 .5rem; border-radius: 3px; }
.seatlegend i.occupied { background: #b7b7b7; border: 1px solid #9a9a9a; }
.seatlegend i.blocked { background: repeating-linear-gradient(45deg, #f6d9c4, #f6d9c4 3px, #e0895a 3px, #e0895a 6px); border: 1px solid #cf6a2c; }
@media (prefers-color-scheme: dark) {
  .seat.available { background: #1c4a26; border-color: var(--good); color: #cfe6d5; }
  .seat.occupied { background: #4a4a4a; color: #9a9a9a; border-color: #5c5c5c; }
  .seat.blocked { background: repeating-linear-gradient(45deg, #5c3418, #5c3418 4px, #99521f 4px, #99521f 8px); color: #f2c79a; border-color: #b3652c; }
  .seatlegend i.occupied { background: #4a4a4a; border-color: #5c5c5c; }
}

/* ============ Data tables (kv + grid) ============ */
table.kv { border-collapse: collapse; margin: .3rem 0; width: auto; }
table.kv th { text-align: left; padding: .25rem 1rem .25rem 0; color: var(--muted); font-weight: 600; vertical-align: top; white-space: nowrap; border: none; }
table.kv td { padding: .25rem 0; border: none; }
.tscroll { overflow-x: auto; max-width: 100%; border: 1px solid var(--border); border-radius: var(--radius-sm); }
table.grid { border-collapse: collapse; white-space: nowrap; font-size: .8rem; margin: 0; width: 100%; }
table.grid th, table.grid td { border: 1px solid var(--border); padding: .3rem .5rem; text-align: left; }
table.grid thead th { background: var(--surface-2); position: sticky; top: 0; color: var(--heading); font-weight: 600; }
table.grid tbody tr:nth-child(even) { background: var(--surface-2); }

/* ============ ToU banner + footer + ToU page ============ */
#tou-banner[hidden] { display: none; }
#tou-banner {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
  background: var(--navy); color: #dbe7f4; border-top: 1px solid rgba(255,255,255,.12);
  padding: .75rem 1.25rem; font-size: .85rem;
  display: flex; align-items: center; justify-content: center; gap: .8rem; flex-wrap: wrap;
}
#tou-banner a { color: #9fc7f0; }
#tou-banner button {
  border: 1px solid rgba(255,255,255,.35); background: rgba(255,255,255,.1); color: #fff;
  padding: .3rem .9rem; border-radius: var(--radius-sm); cursor: pointer; font: inherit; font-size: .85rem;
}
#tou-banner button:hover { background: rgba(255,255,255,.2); }

footer {
  text-align: center; color: var(--muted); font-size: .82rem;
  padding: 1.6rem 1.25rem 2.8rem; border-top: 1px solid var(--border);
  background: var(--surface); margin-top: 1.5rem;
}
footer a { color: var(--link); }

.tou {
  max-width: 840px; margin: 2rem auto 3rem; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm);
  padding: 1.6rem 1.9rem; line-height: 1.6;
}
.tou a { color: var(--link); }
.tou h2 { font-size: 1.1rem; margin-top: 1.4rem; }
.tou ul { padding-left: 1.2rem; }

/* ============ Loading spinner ============ */
.loading { display: flex; align-items: center; justify-content: center; gap: .6rem; color: var(--muted); font-size: .95rem; padding: 2.5rem 0; }
.spinner {
  width: 1.15rem; height: 1.15rem; border: 2.5px solid var(--border-2);
  border-top-color: var(--accent); border-radius: 50%; display: inline-block;
  animation: ac-spin .7s linear infinite;
}
@keyframes ac-spin { to { transform: rotate(360deg); } }

/* ============ Flight-status header: airport names + operating carrier ============ */
.fi-route { font-size: 1.02rem; font-weight: 600; color: var(--ink); margin: .1rem 0 .5rem; }
.fi-route .apname { font-size: .8rem; font-weight: 400; }
.fi-route .rr-arrow { color: var(--muted); font-weight: 400; margin: 0 .25rem; }
.operated {
  display: inline-block; margin: .1rem 0 .5rem; font-size: .92rem; font-weight: 500;
  color: var(--accent); background: rgba(22,104,192,.09);
  padding: .3rem .7rem; border-radius: var(--radius-sm);
}

/* ============ Back-to-route navigation ============ */
.backnav { margin: 0 0 .8rem; }
.backnav .btn { font-weight: 500; }