:root {
  --bg: #efe7d8;
  --ink: #1c1915;
  --muted: #6b6458;
  --paper: #f7f1e6;
  --line: #d8cbb6;
  --open: #2f6f4e;
  --held: #b56a12;
  --booked: #1f3d73;
  --blocked: #9a9388;
  --danger: #8c2f24;
  --radius: 14px;
  --font: "IBM Plex Sans", system-ui, sans-serif;
  --display: "Fraunces", Georgia, serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.5;
}

.page {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 20px 64px;
}

.top {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
  margin-bottom: 28px;
}

.mark {
  margin: 0 0 6px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 600;
  color: var(--held);
}

h1 {
  font-family: var(--display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 650;
  line-height: 1.12;
  margin: 0 0 10px;
}

.lede {
  margin: 0;
  max-width: 46ch;
  color: var(--muted);
}

.banner {
  align-self: start;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--paper);
  font-size: 14px;
  font-weight: 500;
}

.banner.ok { border-color: var(--open); color: var(--open); }
.banner.bad { border-color: var(--danger); color: var(--danger); }

.desk {
  display: grid;
  gap: 18px;
}

@media (min-width: 960px) {
  .top { grid-template-columns: 1fr 280px; align-items: end; }
  .desk { grid-template-columns: 250px 1fr 240px; align-items: start; }
}

.rail, .log-wrap, .board, .hold-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.rail, .log-wrap { padding: 18px; }

h2 {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hint { margin: 0 0 14px; color: var(--muted); font-size: 13px; }

.hold-card {
  padding: 14px;
  min-height: 92px;
  margin-bottom: 12px;
}

.hold-card.empty { color: var(--muted); }
.hold-card.active { border-color: var(--held); }

.actions { display: grid; gap: 8px; }

.btn {
  font: inherit;
  font-weight: 600;
  border-radius: 10px;
  padding: 12px 14px;
  border: 1px solid var(--ink);
  cursor: pointer;
  min-height: 44px;
}

.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn.primary { background: var(--ink); color: var(--paper); }
.btn.ghost { background: transparent; }

.legend { margin: 18px 0 0; padding: 0; }
.legend div { display: flex; gap: 8px; align-items: center; margin: 6px 0; font-size: 13px; }
.legend dt { width: 12px; height: 12px; border-radius: 3px; }
.legend .open { background: var(--open); }
.legend .held { background: var(--held); }
.legend .booked { background: var(--booked); }
.legend .blocked { background: var(--blocked); }

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 10px;
  gap: 12px;
}

label { font-size: 12px; font-weight: 600; display: grid; gap: 6px; }

select {
  font: inherit;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--paper);
  min-height: 44px;
}

.clock { margin: 0; font-size: 13px; color: var(--muted); }

.board {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
  gap: 8px;
  padding: 12px;
  min-height: 320px;
}

.slot {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  background: #fffdf8;
  min-height: 88px;
  text-align: left;
  font: inherit;
  cursor: pointer;
}

.slot:disabled { cursor: default; }
.slot small { display: block; color: var(--muted); font-size: 11px; }
.slot.open { box-shadow: inset 3px 0 0 var(--open); }
.slot.held { box-shadow: inset 3px 0 0 var(--held); background: #fff4e4; }
.slot.booked { box-shadow: inset 3px 0 0 var(--booked); }
.slot.blocked { box-shadow: inset 3px 0 0 var(--blocked); opacity: 0.7; }

.log {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 420px;
  overflow: auto;
  font-size: 12px;
}

.log li {
  border-bottom: 1px solid var(--line);
  padding: 8px 0;
}

.log .t { color: var(--muted); }