:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #172235;
  background: #f3f1eb;
  --ink: #172235;
  --muted: #5f6876;
  --paper: #fffdf8;
  --line: #d7d2c6;
  --accent: #195f56;
  --accent-dark: #12463f;
  --warm: #f2c46d;
  --danger: #8f2f2a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  line-height: 1.55;
}

button, input, textarea, select { font: inherit; }

.hero,
main {
  width: min(1080px, calc(100% - 32px));
  margin-inline: auto;
}

.hero { padding: 56px 0 28px; }

h1, h2, h3, p { margin-top: 0; }

h1 {
  max-width: 820px;
  font-size: clamp(2.25rem, 7vw, 4.8rem);
  line-height: .98;
  letter-spacing: -.055em;
  margin-bottom: 24px;
}

h2 { font-size: clamp(1.55rem, 4vw, 2.25rem); margin-bottom: 12px; }
h3 { margin-bottom: 8px; }

.hero > p:not(.eyebrow) { max-width: 760px; font-size: 1.1rem; color: var(--muted); }

.eyebrow {
  margin-bottom: 8px;
  color: var(--accent);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.warning,
.unknown {
  border-left: 5px solid var(--warm);
  background: #fff6df;
  padding: 16px 18px;
  border-radius: 0 12px 12px 0;
}

main { padding-bottom: 64px; }

.panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 18px 50px rgba(23, 34, 53, .06);
  padding: clamp(20px, 4vw, 38px);
  margin-bottom: 22px;
}

.compact { max-width: 820px; }

.section-heading,
.actions {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.grid-fields {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin: 24px 0;
}

.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

label { display: grid; gap: 7px; font-weight: 750; }
.hint { display: block; color: var(--muted); font-size: .8rem; font-weight: 500; }

input, textarea, select {
  width: 100%;
  color: var(--ink);
  background: #fff;
  border: 1px solid #aaa69c;
  border-radius: 10px;
  padding: 11px 12px;
}

textarea { resize: vertical; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .92rem; }

input:focus, textarea:focus, select:focus, button:focus-visible {
  outline: 3px solid rgba(25, 95, 86, .25);
  outline-offset: 2px;
  border-color: var(--accent);
}

.attestation {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 24px 0;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #f8f6f0;
}

.attestation input { width: auto; margin-top: 5px; }

button {
  border: 0;
  border-radius: 999px;
  padding: 11px 18px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
}

button:hover { background: var(--accent-dark); }
button.secondary { color: var(--ink); background: #e9e5dc; }
button.secondary:hover { background: #ddd8cc; }

.actions { justify-content: flex-start; }
.errors { color: var(--danger); background: #fff0ef; border: 1px solid #e7b6b2; border-radius: 12px; padding: 14px 14px 14px 36px; }

.results[data-status="UNRESOLVED_CONSTRAINTS"] { border-color: #c67b71; }
.summary { color: var(--muted); max-width: 850px; }

.seat-grid {
  --columns: 4;
  display: grid;
  grid-template-columns: repeat(var(--columns), minmax(96px, 1fr));
  gap: 9px;
  overflow-x: auto;
  padding: 6px 2px 16px;
}

.seat {
  min-height: 86px;
  display: grid;
  align-content: space-between;
  padding: 11px;
  border: 1px solid #aebdb8;
  border-radius: 12px;
  background: #edf6f3;
}

.seat[data-empty="true"] { background: #f2f0ea; color: var(--muted); border-style: dashed; }
.seat-coordinate { font-size: .72rem; color: var(--muted); }
.seat strong { font-size: 1.05rem; }

.result-lists {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin: 22px 0;
}

.result-lists section { background: #f7f5ef; border-radius: 12px; padding: 16px; }
.result-lists ul, .compact ul { padding-left: 20px; }
.unknown p { margin-bottom: 0; }

@media (max-width: 760px) {
  .hero { padding-top: 36px; }
  .grid-fields, .two-column, .result-lists { grid-template-columns: 1fr; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .seat-grid { grid-template-columns: repeat(var(--columns), minmax(82px, 1fr)); }
}

@media print {
  body { background: #fff; }
  form, .compact, .warning, .eyebrow, .actions { display: none; }
  .panel { box-shadow: none; border: 0; padding: 0; }
  .results[hidden] { display: none; }
}