:root {
  --bg: #f7f6f3;
  --card: #ffffff;
  --ink: #1c1b18;
  --muted: #6f6b60;
  --line: #e5e2da;
  --accent: #4a5d8f;
  --accent-ink: #ffffff;
  --good: #2e7d4f;
  --bad: #b3423a;
  --warn: #9a6b1f;
  --alt-0: #4a5d8f;
  --alt-1: #b0855b;
  --alt-2: #5b8f6e;
  --alt-3: #8f5b85;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.5 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
#topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.7rem 1rem; background: var(--card); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 5;
}
#brand { font-weight: 700; text-decoration: none; color: var(--ink); font-size: 1.1rem; }
#topbar-right { display: flex; gap: 0.6rem; align-items: center; font-size: 0.9rem; color: var(--muted); }
main { max-width: 780px; margin: 0 auto; padding: 1rem; }
#foot { text-align: center; color: var(--muted); font-size: 0.8rem; padding: 2rem 1rem; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 1rem 1.2rem; margin: 0 0 1rem;
}
.card h2 { margin: 0 0 0.5rem; font-size: 1.05rem; }
.card h3 { margin: 0.8rem 0 0.3rem; font-size: 0.95rem; }
.muted { color: var(--muted); font-size: 0.9rem; }
.small { font-size: 0.85rem; }
.error { color: var(--bad); font-size: 0.9rem; }
.ok { color: var(--good); }

button, .btn {
  font: inherit; border: 1px solid var(--line); border-radius: 8px;
  background: var(--card); color: var(--ink); padding: 0.45rem 0.9rem; cursor: pointer;
}
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
button.danger { background: var(--bad); color: #fff; border-color: var(--bad); }
button:disabled { opacity: 0.45; cursor: not-allowed; }
button.linky { border: none; background: none; color: var(--accent); padding: 0.2rem; text-decoration: underline; }

input, select, textarea {
  font: inherit; padding: 0.45rem 0.6rem; border: 1px solid var(--line);
  border-radius: 8px; background: #fff; color: var(--ink); max-width: 100%;
}
label { display: block; margin: 0.6rem 0 0.2rem; font-size: 0.9rem; color: var(--muted); }
form .row { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: flex-end; }

table { border-collapse: collapse; width: 100%; font-size: 0.9rem; }
th, td { border-bottom: 1px solid var(--line); padding: 0.35rem 0.5rem; text-align: left; }
th { color: var(--muted); font-weight: 600; }
.table-wrap { overflow-x: auto; }

.badge {
  display: inline-block; padding: 0.1rem 0.55rem; border-radius: 999px;
  font-size: 0.75rem; font-weight: 600; border: 1px solid var(--line); color: var(--muted);
}
.badge.status-setup { color: var(--warn); border-color: var(--warn); }
.badge.status-running { color: var(--good); border-color: var(--good); }
.badge.status-revealing { color: var(--accent); border-color: var(--accent); }
.badge.status-done { color: var(--muted); }

.slots { display: grid; grid-template-columns: repeat(auto-fill, minmax(86px, 1fr)); gap: 0.5rem; margin: 0.6rem 0; }
.slot {
  border: 1px solid var(--line); border-radius: 10px; padding: 0.4rem; text-align: center;
  cursor: pointer; user-select: none; background: #fff;
}
.slot .num { font-size: 0.75rem; color: var(--muted); }
.slot .val { font-weight: 700; font-size: 0.85rem; }
.slot.alt-0 { border-color: var(--alt-0); background: color-mix(in srgb, var(--alt-0) 12%, white); }
.slot.alt-1 { border-color: var(--alt-1); background: color-mix(in srgb, var(--alt-1) 14%, white); }
.slot.alt-2 { border-color: var(--alt-2); background: color-mix(in srgb, var(--alt-2) 14%, white); }
.slot.alt-3 { border-color: var(--alt-3); background: color-mix(in srgb, var(--alt-3) 14%, white); }

.choice { display: flex; gap: 0.6rem; margin: 0.4rem 0; flex-wrap: wrap; }
.choice button { flex: 1; padding: 0.8rem; font-weight: 700; min-width: 7rem; }
.choice button.sel-alt-0 { background: var(--alt-0); color: #fff; border-color: var(--alt-0); }
.choice button.sel-alt-1 { background: var(--alt-1); color: #fff; border-color: var(--alt-1); }
.choice button.sel-alt-2 { background: var(--alt-2); color: #fff; border-color: var(--alt-2); }
.choice button.sel-alt-3 { background: var(--alt-3); color: #fff; border-color: var(--alt-3); }

.grid-check td, .grid-check th { text-align: center; }
.grid-check td:first-child, .grid-check th:first-child { text-align: left; white-space: nowrap; }

.exp-link {
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  padding: 0.8rem 1rem; border: 1px solid var(--line); border-radius: 12px;
  background: var(--card); margin-bottom: 0.6rem; text-decoration: none; color: var(--ink);
}
.right { text-align: right; }
.correct { background: color-mix(in srgb, var(--good) 14%, white); }
.incorrect { background: color-mix(in srgb, var(--bad) 12%, white); }
.confbar { display: flex; align-items: center; gap: 0.6rem; }
.confbar input[type=range] { flex: 1; }