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

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
}

header {
    background-color: #333;
    color: #fff;
    padding: 1rem;
}

nav {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

nav a {
    color: #fff;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.3s;
}

nav a:hover {
    background-color: #555;
}

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

h1 {
    text-align: center;
    margin-bottom: 2rem;
    color: #333;
}

h2 {
    margin-bottom: 1rem;
    color: #444;
}

/* Formulare */
form {
    background-color: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

input[type="text"],
input[type="number"],
input[type="file"],
select {
    width: 100%;
    padding: 0.5rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    background-color: #333;
    color: #fff;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #555;
}

button.danger {
    background-color: #dc3545;
}

button.danger:hover {
    background-color: #c82333;
}

/* Tabellen */
table {
    width: 100%;
    border-collapse: collapse;
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

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

th {
    background-color: #f8f9fa;
    font-weight: bold;
}

tr:hover {
    background-color: #f8f9fa;
}

/* Nachrichten */
.message {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 4px;
    animation: fadeIn 0.3s ease-in;
}

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

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Jahresauswahl */
.year-selection {
    background-color: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.year-form {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.year-form select {
    width: auto;
    margin-bottom: 0;
}

/* Statistiken */
.stats {
    margin-bottom: 2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.stat-box {
    background-color: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-box h3 {
    margin-bottom: 0.5rem;
    color: #666;
}

.stat-box p {
    font-size: 2rem;
    font-weight: bold;
    color: #333;
}

/* Schnellzugriff */
.quick-access {
    margin-bottom: 2rem;
}

.quick-access-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.quick-access-box {
    background-color: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-decoration: none;
    color: #333;
    transition: transform 0.3s, box-shadow 0.3s;
}

.quick-access-box:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.quick-access-box h3 {
    margin-bottom: 0.5rem;
    color: #333;
}

.quick-access-box p {
    color: #666;
}

/* Responsive Design */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        align-items: center;
    }
    
    .year-form {
        flex-direction: column;
    }
    
    .year-form select {
        width: 100%;
    }
    
    .stats-grid,
    .quick-access-grid {
        grid-template-columns: 1fr;
    }
}