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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.navbar {
    background: #2c3e50;
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-links a {
    color: #ecf0f1;
    text-decoration: none;
    margin-left: 1.5rem;
}

.nav-links a:hover {
    color: #3498db;
}

.admin-link {
    background: #e74c3c;
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 2rem;
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
}

.btn:hover {
    background: #2980b9;
}

.btn-danger {
    background: #e74c3c;
}

.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

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

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

.alert-info {
    background: #cce5ff;
    color: #004085;
    border: 1px solid #b8daff;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th, td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background: #f8f9fa;
    font-weight: 600;
}

tr:hover {
    background: #f8f9fa;
}

.footer {
    text-align: center;
    padding: 2rem;
    color: #666;
    margin-top: 2rem;
}

.admin-nav {
    background: #34495e;
    padding: 1rem;
    margin-bottom: 2rem;
    border-radius: 4px;
}

.admin-nav a {
    color: #ecf0f1;
    margin-right: 1.5rem;
    text-decoration: none;
}

.admin-nav a:hover {
    color: #3498db;
}

.debug-info {
    background: #fff3cd;
    border: 1px solid #ffc107;
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.85rem;
}