:root {
  --bg: #f6f3ee;
  --card: #ffffff;
  --ink: #1b1b1b;
  --muted: #6b6b6b;
  --accent: #2d6cdf;
  --accent-dark: #1f4fa5;
  --danger: #c0392b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 10% 10%, #fff6e8, #f6f3ee);
  color: var(--ink);
}

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}

.card {
  background: var(--card);
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  padding: 24px;
}

h1, h2, h3 { margin: 0 0 12px; }

p { color: var(--muted); }

form { display: grid; gap: 12px; }

label { font-size: 14px; color: var(--muted); }

input[type="text"], input[type="email"], input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid #ddd;
  font-size: 15px;
}

button {
  padding: 10px 14px;
  border-radius: 10px;
  border: none;
  background: var(--accent);
  color: white;
  font-size: 15px;
  cursor: pointer;
}

button:hover { background: var(--accent-dark); }

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 12px;
  background: #f1f1f1;
  color: var(--muted);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.table th, .table td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid #eee;
}

.table th { color: var(--muted); font-weight: 600; }

.link {
  color: var(--accent);
  text-decoration: none;
}

.error {
  background: #ffe9e6;
  border: 1px solid #ffd0c8;
  color: #8a2b20;
  padding: 10px 12px;
  border-radius: 10px;
}

.notice {
  background: #e8f0ff;
  border: 1px solid #cfdcff;
  color: #1d3f91;
  padding: 10px 12px;
  border-radius: 10px;
}

.danger {
  background: var(--danger);
}

.small { font-size: 12px; color: var(--muted); }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

.room-box {
  display: flex;
  gap: 10px;
  align-items: center;
}

.room-box input { flex: 1; }