:root {
  --green: #2d6a4f;
  --blue: #1d4e89;
  --yellow: #c9a227;
  --red: #9b2226;
  --gray: #6c757d;
  --bg: #f4f1ea;
  --text: #1b1b1b;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: "Segoe UI", "PingFang SC", "Noto Sans SC", sans-serif; background: var(--bg); color: var(--text); }
.top { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1rem; padding: 0.75rem 1rem; background: #1b4332; color: #fff; }
.top a, .top .who, .top button { color: #fff; }
.brand { font-weight: 700; text-decoration: none; font-size: 1.1rem; }
nav { display: flex; flex-wrap: wrap; gap: 0.5rem 0.75rem; align-items: center; }
main { padding: 1rem; max-width: 1100px; margin: 0 auto; }
h1, h2 { margin: 0 0 0.75rem; }
.card, .room-card { background: #fff; border-radius: 12px; padding: 1rem; margin: 0 0 1rem; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.narrow { max-width: 28rem; margin-left: auto; margin-right: auto; }
label, fieldset { display: block; margin: 0.75rem 0; }
input, select, textarea, button { font-size: 1rem; min-height: 44px; }
input, select, textarea { width: 100%; padding: 0.5rem 0.6rem; }
input[type="checkbox"] { width: auto; min-height: 24px; }
input[type="file"] { padding: 0.4rem 0; }
label.check { display: flex; align-items: center; gap: 0.5rem; }
audio { width: 100%; max-width: 16rem; height: 40px; }
button, .btn { display: inline-flex; align-items: center; justify-content: center; padding: 0.65rem 1rem; border-radius: 8px; border: 0; background: #40916c; color: #fff; text-decoration: none; min-height: 44px; }
button.primary { background: #1b4332; width: 100%; }
button.linkish { background: none; border: 0; min-height: 44px; padding: 0 0.4rem; }
.flash { padding: 0.75rem; border-radius: 8px; }
.flash.ok { background: #d8f3dc; }
.flash.err { background: #f8d7da; }
.room-grid { display: grid; gap: 0.75rem; grid-template-columns: 1fr; }
.room-card ul { padding-left: 1.1rem; margin: 0.4rem 0 0.8rem; }
.room-card.green { border-left: 8px solid var(--green); }
.room-card.blue { border-left: 8px solid var(--blue); }
.room-card.yellow { border-left: 8px solid var(--yellow); }
.room-card.red { border-left: 8px solid var(--red); }
.room-card.gray { border-left: 8px solid var(--gray); opacity: 0.9; }
.bot-opt { display: flex; gap: 0.6rem; padding: 0.6rem; border: 1px solid #ddd; border-radius: 8px; }
.bot-opt.disabled { opacity: 0.55; background: #eee; }
.hint { color: #555; font-size: 0.95rem; }
.inline { display: inline; }
table.wide { width: 100%; border-collapse: collapse; background: #fff; }
td, th { border-bottom: 1px solid #ddd; padding: 0.5rem; text-align: left; vertical-align: top; }
.conflict { color: var(--red); font-weight: 600; }
@media (min-width: 720px) {
  .room-grid { grid-template-columns: 1fr 1fr; }
}