* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 600px;
    margin: 0 auto;
}

.header {
    text-align: center;
    color: white;
    margin-bottom: 30px;
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.subtitle {
    font-size: 1.1em;
    opacity: 0.9;
}

.card {
    background: white;
    border-radius: 10px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.card h2 {
    margin-bottom: 20px;
    color: #667eea;
    font-size: 1.8em;
}

.card h3 {
    margin-bottom: 15px;
    color: #667eea;
    font-size: 1.3em;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-size: 1em;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    width: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #6c757d;
    color: white;
    margin-top: 15px;
}

.btn-secondary:hover {
    background: #5a6268;
}

.alert {
    padding: 12px 15px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.user-info {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 5px;
    margin: 20px 0;
}

.user-info p {
    margin-bottom: 10px;
    font-size: 0.95em;
}

.user-info strong {
    color: #667eea;
}

.demo-info {
    margin-top: 25px;
    padding-top: 25px;
    border-top: 2px solid #e0e0e0;
}

.demo-info h3 {
    font-size: 1.1em;
    margin-bottom: 10px;
    color: #555;
}

.demo-info p {
    margin-bottom: 8px;
    font-size: 0.9em;
    color: #666;
}

.note {
    font-size: 0.85em;
    color: #888;
    font-style: italic;
    margin-top: 10px;
}

.endpoints {
    list-style: none;
    padding-left: 0;
}

.endpoints li {
    padding: 10px;
    margin-bottom: 8px;
    background: #f8f9fa;
    border-radius: 5px;
    border-left: 3px solid #667eea;
}

.endpoints code {
    background: #e9ecef;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    color: #667eea;
}

.info {
    background: #e7f3ff;
    border: 2px solid #667eea;
}

.success {
    border: 2px solid #28a745;
}

.users-table {
    width: 100%;
    border-collapse: collapse;
    margin: 15px 0;
    font-size: 0.9em;
}

.users-table thead {
    background: #667eea;
    color: white;
}

.users-table th,
.users-table td {
    padding: 10px;
    text-align: left;
    border: 1px solid #e0e0e0;
}

.users-table tbody tr:nth-child(even) {
    background: #f8f9fa;
}

.users-table tbody tr:hover {
    background: #e7f3ff;
}

.users-table code {
    background: #e9ecef;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    color: #667eea;
}

@media (max-width: 600px) {
    .header h1 {
        font-size: 2em;
    }
    
    .card {
        padding: 20px;
    }
    
    .users-table {
        font-size: 0.8em;
    }
    
    .users-table th,
    .users-table td {
        padding: 8px 5px;
    }
}