:root {
  --primary: #06c755; /* LINE green */
  --dark: #1a1a1a;
  --gray: #666;
  --bg: #f5f6f7;
  --border: #e0e0e0;
  --danger: #e04b4b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Noto Sans Thai", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--dark);
  padding-bottom: 24px;
}

header.app-header {
  background: var(--primary);
  color: #fff;
  padding: 16px;
  text-align: center;
  font-weight: 600;
  font-size: 18px;
}

main {
  max-width: 480px;
  margin: 0 auto;
  padding: 16px;
}

.card {
  background: #fff;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.room-type-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 10px;
  cursor: pointer;
}
.room-type-card.selected { border-color: var(--primary); background: #f0fbf4; }
.room-type-card .name { font-weight: 600; }
.room-type-card .price { color: var(--primary); font-weight: 700; }
.room-type-card .avail { font-size: 12px; color: var(--gray); }
.room-type-card .avail.none { color: var(--danger); }

label { display: block; font-size: 13px; color: var(--gray); margin: 10px 0 4px; }
input, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
}

button.primary {
  width: 100%;
  padding: 14px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  margin-top: 16px;
  cursor: pointer;
}
button.primary:disabled { background: #aaa; cursor: not-allowed; }

button.secondary {
  width: 100%;
  padding: 10px;
  background: #fff;
  color: var(--danger);
  border: 1px solid var(--danger);
  border-radius: 10px;
  font-size: 14px;
  margin-top: 8px;
  cursor: pointer;
}

.booking-item { border-left: 4px solid var(--primary); padding-left: 10px; margin-bottom: 14px; }
.booking-item .ref { font-weight: 700; }
.booking-item .status { font-size: 12px; padding: 2px 8px; border-radius: 10px; background: #eee; display: inline-block; }
.status.pending { background: #fff3cd; color: #856404; }
.status.confirmed { background: #d4edda; color: #155724; }
.status.cancelled { background: #f8d7da; color: #721c24; }
.status.checked_in, .status.checked_out { background: #d1ecf1; color: #0c5460; }

.msg { padding: 10px; border-radius: 8px; margin: 10px 0; font-size: 14px; }
.msg.error { background: #f8d7da; color: #721c24; }
.msg.success { background: #d4edda; color: #155724; }

.loading { text-align: center; color: var(--gray); padding: 24px; }
nav.bottom-nav { display: flex; gap: 8px; max-width: 480px; margin: 12px auto 0; padding: 0 16px; }
nav.bottom-nav a { flex: 1; text-align: center; padding: 10px; border-radius: 8px; background: #fff; color: var(--dark); text-decoration: none; font-size: 14px; border: 1px solid var(--border); }