:root {
    --kanizsay-blue: #004B87;
    --kanizsay-light-blue: #3498db;
    --kanizsay-white: #ffffff;
    --kanizsay-gray: #f8f9fa;
    --kanizsay-dark-gray: #6c757d;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--kanizsay-gray);
    color: #333;
}

.header {
    background: linear-gradient(135deg, var(--kanizsay-blue) 0%, var(--kanizsay-light-blue) 100%);
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.school-logo {
    width: 80px;
    height: 80px;
    object-fit: contain;
}

.header-text h1 {
    font-size: 1.8rem;
    margin-bottom: 5px;
}

.header-text p {
    font-size: 1rem;
    opacity: 0.9;
}

.container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
}

.card {
    background: white;
    border-radius: 10px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--kanizsay-blue);
}

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

.form-control:focus {
    outline: none;
    border-color: var(--kanizsay-blue);
}

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

.btn-primary {
    background-color: var(--kanizsay-blue);
    color: white;
}

.btn-primary:hover {
    background-color: #003d6e;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,75,135,0.3);
}

.btn-success {
    background-color: #28a745;
    color: white;
}

.btn-success:hover {
    background-color: #218838;
}

.btn-secondary {
    background-color: var(--kanizsay-dark-gray);
    color: white;
}

.btn-secondary:hover {
    background-color: #545b62;
}

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

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

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

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

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.hidden {
    display: none;
}

.form-inactive {
    background-color: #f8d7da;
    border: 2px solid #dc3545;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    color: #721c24;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: linear-gradient(135deg, var(--kanizsay-blue) 0%, var(--kanizsay-light-blue) 100%);
    color: white;
    padding: 25px;
    border-radius: 10px;
    text-align: center;
}

.stat-card h3 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.stat-card p {
    opacity: 0.9;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.table th,
.table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

.table th {
    background-color: var(--kanizsay-blue);
    color: white;
    font-weight: 600;
    cursor: pointer;
    user-select: none;
}

.table th:hover {
    background-color: #003d6e;
}

.table th.sortable::after {
    content: ' ⇅';
    opacity: 0.5;
}

.table th.sorted-asc::after {
    content: ' ▲';
    opacity: 1;
}

.table th.sorted-desc::after {
    content: ' ▼';
    opacity: 1;
}

.table tr:hover {
    background-color: var(--kanizsay-gray);
}

.thank-you {
    text-align: center;
    padding: 40px;
    background: linear-gradient(135deg, var(--kanizsay-blue) 0%, var(--kanizsay-light-blue) 100%);
    color: white;
    border-radius: 10px;
    margin: 50px 0;
}

.thank-you h2 {
    font-size: 2rem;
    margin-bottom: 15px;
}

.search-box {
    margin-bottom: 20px;
}

.search-box input {
    width: 100%;
    max-width: 400px;
    padding: 10px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-size: 1rem;
}

.search-box input:focus {
    outline: none;
    border-color: var(--kanizsay-blue);
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .header-text h1 {
        font-size: 1.3rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .container > div[style*="grid-template-columns: 1fr 1fr"] {
        grid-template-columns: 1fr !important;
    }
    
    .table {
        font-size: 0.9rem;
    }
    
    .table th,
    .table td {
        padding: 8px;
    }
}