:root {
  color-scheme: light dark;
  --bg: #0f1115;
  --panel: #171a21;
  --border: #2a2f3a;
  --text: #e6e8eb;
  --muted: #8b93a1;
  --accent: #4f8cff;
  --error: #ff6b6b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  display: flex;
  justify-content: center;
  padding: 32px 16px;
}

.panel {
  width: 100%;
  max-width: 640px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.panel.wide { max-width: 920px; }

h1 { margin-top: 0; font-size: 1.4rem; }
.hint { color: var(--muted); font-size: 0.9rem; }

.row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

input {
  flex: 1;
  min-width: 0;
  background: #0f1115;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 8px;
}

button {
  background: var(--accent);
  color: white;
  border: none;
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
}

button:disabled { opacity: 0.5; cursor: not-allowed; }

.error {
  color: var(--error);
  font-size: 0.9rem;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

#messages {
  height: 320px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 12px;
  background: #0f1115;
}

.msg { margin-bottom: 6px; font-size: 0.95rem; word-wrap: break-word; }
.msg .author { color: var(--accent); font-weight: 600; }
.msg .time { color: var(--muted); font-size: 0.75rem; margin-left: 6px; }
.system-msg { color: var(--muted); font-style: italic; font-size: 0.85rem; }

.moderation summary { cursor: pointer; color: var(--muted); margin-bottom: 8px; }

.col { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }

.layout {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.sidebar {
  flex: 0 0 220px;
  min-width: 180px;
}

.sidebar h3 { margin-top: 0; font-size: 1rem; color: var(--muted); }

#room-list {
  list-style: none;
  margin: 0 0 16px 0;
  padding: 0;
  max-height: 200px;
  overflow-y: auto;
}

.room-item {
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
  margin-bottom: 4px;
}

.room-item:hover { background: #0f1115; }
.room-item .muted { color: var(--muted); font-size: 0.8rem; }

.main {
  flex: 1;
  min-width: 260px;
}

.room-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.badge {
  font-size: 0.75rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 8px;
}

#key-warning { margin-top: 0; }

.unlock {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  margin-bottom: 12px;
  background: #0f1115;
}

.unlock p { margin-top: 0; color: var(--muted); font-size: 0.9rem; }