/* PMS — 旅館管理系統 全局樣式 */
:root {
  --primary: #2c5f8a;
  --primary-dark: #1e4266;
  --accent: #f0a500;
  --bg: #f5f7fa;
  --card-bg: #ffffff;
  --text: #2d3748;
  --text-muted: #718096;
  --border: #e2e8f0;
  --success: #38a169;
  --danger: #e53e3e;
  --warning: #dd6b20;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.08);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }

/* Layout */
.nav { background: var(--primary); color: #fff; padding: 0 24px; display: flex; align-items: center; gap: 24px; height: 56px; }
.nav a { color: rgba(255,255,255,.85); text-decoration: none; padding: 8px 12px; border-radius: var(--radius); font-size: 14px; }
.nav a:hover, .nav a.active { background: rgba(255,255,255,.15); color: #fff; }
.nav-brand { font-weight: 700; font-size: 16px; margin-right: auto; }
.container { max-width: 1200px; margin: 0 auto; padding: 24px 16px; }
.page-title { font-size: 22px; font-weight: 700; margin-bottom: 20px; }

/* Card */
.card { background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; margin-bottom: 16px; }
.card-title { font-size: 15px; font-weight: 600; margin-bottom: 12px; color: var(--primary); }

/* Grid */
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
@media (max-width: 640px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

/* Forms */
.form-group { margin-bottom: 14px; }
label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 4px; color: var(--text-muted); }
input, select, textarea { width: 100%; padding: 8px 12px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 14px; }
input:focus, select:focus { outline: none; border-color: var(--primary); }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: var(--radius); border: none; font-size: 14px; font-weight: 500; cursor: pointer; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* Table */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { background: var(--bg); padding: 10px 12px; text-align: left; font-weight: 600; font-size: 12px; text-transform: uppercase; color: var(--text-muted); border-bottom: 2px solid var(--border); }
td { padding: 10px 12px; border-bottom: 1px solid var(--border); }
tr:hover td { background: var(--bg); }

/* Badges */
.badge { display: inline-block; padding: 2px 8px; border-radius: 99px; font-size: 11px; font-weight: 600; }
.badge-green  { background: #c6f6d5; color: var(--success); }
.badge-blue   { background: #bee3f8; color: #2b6cb0; }
.badge-orange { background: #feebc8; color: var(--warning); }
.badge-red    { background: #fed7d7; color: var(--danger); }
.badge-gray   { background: #e2e8f0; color: var(--text-muted); }

/* Login Page */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-box { width: 360px; }
.login-logo { text-align: center; font-size: 28px; font-weight: 800; color: var(--primary); margin-bottom: 8px; }
.login-sub { text-align: center; color: var(--text-muted); font-size: 14px; margin-bottom: 24px; }

/* Alerts */
.alert { padding: 10px 14px; border-radius: var(--radius); font-size: 14px; margin-bottom: 12px; }
.alert-error   { background: #fff5f5; border: 1px solid #fc8181; color: var(--danger); }
.alert-success { background: #f0fff4; border: 1px solid #9ae6b4; color: var(--success); }
.hidden { display: none !important; }

/* Stats */
.stat-box { text-align: center; }
.stat-num { font-size: 32px; font-weight: 800; color: var(--primary); }
.stat-label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* Room grid */
.room-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 10px; }
.room-cell { border: 2px solid var(--border); border-radius: var(--radius); padding: 12px 8px; text-align: center; cursor: pointer; }
.room-cell.available  { border-color: var(--success); background: #f0fff4; }
.room-cell.occupied   { border-color: var(--danger); background: #fff5f5; }
.room-cell.dirty      { border-color: var(--warning); background: #fffaf0; }
.room-cell .room-no   { font-size: 18px; font-weight: 700; }
.room-cell .room-type { font-size: 11px; color: var(--text-muted); }