* { box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
    background: #f4f6f8;
    margin: 0;
    padding: 0;
    color: #333;
}
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
}
.card {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 24px;
    margin-bottom: 20px;
}
.header {
    background: #2c3e50;
    color: #fff;
    padding: 20px;
    margin-bottom: 20px;
}
.header h1 {
    margin: 0;
    font-size: 24px;
}
.header a {
    color: #ecf0f1;
    text-decoration: none;
    margin-left: 20px;
}
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    text-decoration: none;
}
.btn-primary { background: #3498db; color: #fff; }
.btn-success { background: #2ecc71; color: #fff; }
.btn-danger { background: #e74c3c; color: #fff; }
.btn-warning { background: #f39c12; color: #fff; }
.btn:hover { opacity: 0.9; }
.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 5px; font-weight: 600; }
.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
    font-size: 14px;
}
th, td {
    text-align: left;
    padding: 12px;
    border-bottom: 1px solid #eee;
}
th { background: #f8f9fa; font-weight: 600; }
.alert {
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: 20px;
}
.alert-success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.alert-danger { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
.alert-info { background: #d1ecf1; color: #0c5460; border: 1px solid #bee5eb; }
.login-box {
    max-width: 400px;
    margin: 80px auto;
}
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}
.badge-primary { background: #3498db; color: #fff; }
.badge-success { background: #2ecc71; color: #fff; }
.badge-warning { background: #f39c12; color: #fff; }
.small { font-size: 13px; color: #666; }
hr { border: none; border-top: 1px solid #eee; margin: 20px 0; }
.modal {
    display: none;
    position: fixed;
    z-index: 100;
    left: 0; top: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.5);
}
.modal-content {
    background: #fff;
    margin: 40px auto;
    padding: 24px;
    border-radius: 8px;
    max-width: 600px;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}
.close {
    position: absolute;
    right: 16px; top: 10px;
    font-size: 24px;
    cursor: pointer;
}
pre {
    background: #f8f9fa;
    padding: 12px;
    border-radius: 4px;
    overflow-x: auto;
    font-size: 12px;
}
@media (max-width: 768px) {
    .container { padding: 10px; }
    table { font-size: 12px; }
    th, td { padding: 8px; }
}