:root{--navy:#12253f;--navy-light:#1c3a63;--gold:#c9a24b;--gold-dark:#a9863a;--ink:#1f2937;--muted:#6b7280;--line:#e5e7eb;--bg:#eef1f5;}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink)}
a{text-decoration:none;color:inherit}

.admin-layout{display:flex;min-height:100vh}
.sidebar{width:230px;background:var(--navy);color:#c7d2e0;flex-shrink:0}
.sidebar .brand{padding:18px 20px;font-size:16px;font-weight:700;color:#fff;border-bottom:1px solid #24395b;line-height:1.3}
.sidebar nav{display:flex;flex-direction:column;padding:10px 0}
.sidebar nav a{padding:12px 20px;font-size:14px;font-weight:500;border-left:3px solid transparent}
.sidebar nav a:hover{background:#1a3053}
.sidebar nav a.active{background:#1a3053;border-left-color:var(--gold);color:#fff}

.admin-main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{background:#fff;border-bottom:1px solid var(--line);padding:14px 24px;font-size:14px;text-align:right}
.role-tag{background:var(--gold);color:#1a1a1a;font-size:11px;font-weight:700;padding:2px 8px;border-radius:10px;margin-left:6px}
.admin-content{padding:24px;max-width:1150px}

h1.page-title{font-size:22px;margin-bottom:18px;color:var(--navy)}

.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:16px;margin-bottom:24px}
.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}
.stat .n{font-size:24px;font-weight:700;color:var(--navy)}
.stat .n.gold{color:var(--gold-dark)}
.stat .l{font-size:13px;color:var(--muted);margin-top:4px}

.panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;margin-bottom:20px}
.panel h2{font-size:16px;margin-bottom:14px;color:var(--navy)}

.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:11px 12px;text-align:left;border-bottom:1px solid var(--line);font-size:14px;vertical-align:middle}
.table th{background:#f3f5f8;font-weight:700;font-size:13px}
.table tr:hover td{background:#fafbfc}

.btn{display:inline-block;padding:9px 16px;border-radius:7px;border:none;cursor:pointer;font-weight:600;font-size:14px;text-align:center}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{background:var(--navy-light)}
.btn-gold{background:var(--gold);color:#1a1a1a}
.btn-gold:hover{background:var(--gold-dark)}
.btn-sm{padding:6px 12px;font-size:13px}
.btn-danger{background:#c0392b;color:#fff}
.btn-success{background:#1b7a3d;color:#fff}
.btn-light{background:#eceff3;color:#333}
.btn-block{display:block;width:100%}

.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:13px;font-weight:600;margin-bottom:5px}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:7px;font-size:14px;font-family:inherit}
.form-group textarea{min-height:80px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-row-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}

.alert{padding:11px 14px;border-radius:8px;font-size:14px;margin-bottom:16px}
.alert-error{background:#fdecea;color:#b71c1c}
.alert-success{background:#e8f5e9;color:#1b5e20}
.alert-info{background:#e7f1fb;color:#0d47a1}

.badge{display:inline-block;padding:3px 10px;border-radius:12px;font-size:12px;font-weight:700}
.badge-pending{background:#fff8e1;color:#f57f17}
.badge-confirmed{background:#e3f2fd;color:#0d47a1}
.badge-in{background:#e8f5e9;color:#1b5e20}
.badge-out{background:#ede7f6;color:#4527a0}
.badge-cancelled{background:#fdecea;color:#b71c1c}
.badge-paid{background:#e8f5e9;color:#1b5e20}
.badge-refunded{background:#eceff1;color:#455a64}
.badge-available{background:#e8f5e9;color:#1b5e20}
.badge-maintenance{background:#fff3e0;color:#e65100}
.badge-inactive{background:#eceff1;color:#607d8b}

.flex-between{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.muted{color:var(--muted)}
.inline-form{display:inline}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}

/* Login */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--navy)}
.login-card{background:#fff;border-radius:14px;padding:32px;width:370px}
.login-card h1{font-size:22px;margin-bottom:6px;text-align:center;color:var(--navy)}
.login-card .sub{text-align:center;color:var(--muted);font-size:14px;margin-bottom:20px}

/* Calendar grid */
.cal-table{width:100%;border-collapse:collapse;font-size:13px}
.cal-table th,.cal-table td{border:1px solid var(--line);padding:8px;text-align:center}
.cal-table th{background:#f3f5f8}
.cal-free{background:#e8f5e9;color:#1b5e20;font-weight:700}
.cal-full{background:#fdecea;color:#b71c1c;font-weight:700}
.cal-room-name{text-align:left!important;font-weight:600;background:#fafbfc}

@media(max-width:820px){
  .admin-layout{flex-direction:column}
  .sidebar{width:100%}
  .sidebar nav{flex-direction:row;flex-wrap:wrap}
  .form-row,.form-row-3{grid-template-columns:1fr}
}