:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --ink: #1b2430;
  --muted: #5d6b7a;
  --line: #d9e0e7;
  --accent: #1f5fa8;
  --accent-ink: #ffffff;
  --danger: #b42318;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11161c; --card: #1a2129; --ink: #e6edf3; --muted: #94a3b3;
    --line: #2c3743; --accent: #4c8fd6; --danger: #f07167;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 1100px; margin: 0 auto; padding: 16px; }
h1 { font-size: 1.35rem; margin: 0 0 12px; }
a { color: var(--accent); }

.top {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 16px; background: var(--card); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 2;
}
.brand { font-weight: 700; text-decoration: none; color: var(--ink); font-size: 1.1rem; }
.top nav { display: flex; gap: 8px; align-items: center; }
.inline { display: inline; margin: 0; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 0 16px; border-radius: var(--radius);
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
}
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-ghost { background: transparent; }
.btn-block { width: 100%; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; margin-bottom: 16px;
}
.login { max-width: 360px; margin: 12vh auto 0; }
.empty { text-align: center; }

.totals { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 16px; }
.stat {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 12px; display: flex; flex-direction: column;
}
.stat .num { font-size: 1.4rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat .lbl { color: var(--muted); font-size: .85rem; }
@media (max-width: 600px) { .totals { grid-template-columns: repeat(2, 1fr); } }

.table-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
table.flights { width: 100%; border-collapse: collapse; font-size: .92rem; }
.flights th, .flights td { padding: 9px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.flights th { color: var(--muted); font-weight: 600; font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; }
.flights tr:last-child td { border-bottom: 0; }
.r { text-align: right !important; font-variant-numeric: tabular-nums; }
.nowrap { white-space: nowrap; }
.clip { max-width: 280px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.actions a { margin-right: 10px; }
.danger { color: var(--danger); }
.tag {
  display: inline-block; font-size: .72rem; padding: 0 6px; border-radius: 99px;
  border: 1px solid var(--line); color: var(--muted);
}

fieldset { border: 0; padding: 0; margin: 0 0 18px; }
legend { font-weight: 700; margin-bottom: 6px; }
label { display: block; font-size: .9rem; color: var(--muted); margin-bottom: 10px; }
input, select, textarea {
  display: block; width: 100%; margin-top: 4px; min-height: 44px;
  padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--bg); color: var(--ink); font: inherit;
}
textarea { min-height: 0; resize: vertical; }
.with-btn { display: flex; gap: 6px; align-items: stretch; }
.with-btn input { margin-top: 4px; }
.with-btn .btn { margin-top: 4px; padding: 0 10px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 12px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0 12px; }
@media (max-width: 700px) {
  .grid3 { grid-template-columns: 1fr; }
  .grid4 { grid-template-columns: 1fr 1fr; }
}
.hint { color: var(--muted); font-size: .82rem; margin: -4px 0 0; }
.form-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.error { color: var(--danger); background: color-mix(in srgb, var(--danger) 10%, transparent); padding: 10px 14px 10px 28px; border-radius: 8px; }
p.error { padding-left: 14px; }