* { margin:0; padding:0; box-sizing:border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background:#f0f2f5; }
.login-page { display:flex; align-items:center; justify-content:center; min-height:100vh; }
.login-box { background:#fff; padding:40px; border-radius:8px; box-shadow:0 2px 8px rgba(0,0,0,0.1); width:100%; max-width:400px; }
.login-box h1 { font-size:24px; margin-bottom:8px; }
.login-box h2 { font-size:16px; color:#666; margin-bottom:24px; }
.form-group { margin-bottom:20px; }
.form-group label { display:block; margin-bottom:6px; font-weight:500; }
.form-group input, .form-group select { width:100%; padding:10px; border:1px solid #d9d9d9; border-radius:4px; font-size:14px; }
.btn-primary { background:#1890ff; color:#fff; border:none; padding:10px 20px; border-radius:4px; cursor:pointer; }
.btn-block { width:100%; }
.btn-cancel { background:#f5f5f5; border:1px solid #d9d9d9; padding:10px 20px; border-radius:4px; cursor:pointer; }
.btn-small { padding:4px 12px; font-size:12px; margin-right:4px; }
.btn-danger { color:#ff4d4f; border-color:#ff4d4f; }
.error-msg { color:#ff4d4f; margin-top:12px; }
.admin-layout { display:flex; min-height:100vh; }
.sidebar { width:200px; background:#001529; color:#fff; padding:20px 0; }
.sidebar h3 { padding:0 20px 20px; }
.sidebar ul { list-style:none; }
.sidebar ul li a { display:block; padding:12px 20px; color:#ffffffa6; text-decoration:none; }
.sidebar ul li a.active, .sidebar ul li a:hover { background:#1890ff; color:#fff; }
.main-content { flex:1; padding:24px; }
.card { background:#fff; padding:24px; border-radius:8px; margin-bottom:24px; box-shadow:0 1px 2px rgba(0,0,0,0.06); }
.toolbar { margin-bottom:16px; }
.data-table { width:100%; background:#fff; border-collapse:collapse; border-radius:8px; overflow:hidden; box-shadow:0 1px 2px rgba(0,0,0,0.06); }
.data-table th, .data-table td { padding:12px 16px; text-align:left; border-bottom:1px solid #f0f0f0; }
.data-table th { background:#fafafa; font-weight:500; }
.modal { position:fixed; top:0; left:0; right:0; bottom:0; background:rgba(0,0,0,0.5); display:flex; align-items:center; justify-content:center; z-index:1000; }
.modal-content { background:#fff; padding:24px; border-radius:8px; width:90%; max-width:500px; }
.form-actions { margin-top:24px; display:flex; gap:12px; justify-content:flex-end; }