body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 20px;
}
.container {
    max-width: 800px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}
h2, h3 {
    text-align: center;
    color: #333;
    margin-bottom: 20px;
}
form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}
form label {
    font-weight: bold;
}
form input {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px;
}
form button {
    padding: 10px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s ease;
}
form button:hover {
    background: #2980b9;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
th, td {
    padding: 10px;
    border: 1px solid #ddd;
    text-align: center;
}
th {
    background: #2980b9;
    color: white;
    font-weight: bold;
}
tr:nth-child(even) {
    background: #f2f2f2;
}
p {
    text-align: center;
    color: #e74c3c;
    font-weight: bold;
}

/* Mobil Uyumluluk - Responsive Düzeni */
@media screen and (max-width: 768px) {

    body {
        margin: 0;
        padding: 5px;
    }

    .dashboard-container {
        flex-direction: column;
    }

    .sidebar {
        position: static;
        width: 100%;
        height: auto;
        padding: 10px;
        margin-bottom: 10px;
        text-align: center;
    }

    .sidebar ul {
        display: none; /* Mobilde menüyü gizler, tıklayınca açılır */
        padding: 0;
    }

    .sidebar h2 {
        cursor: pointer;
    }

    .main-content {
        margin-left: 0;
        padding: 10px;
        overflow-x: auto;
    }

    table {
        width: 100%;
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }

    table th, table td {
        padding: 6px 8px;
        font-size: 12px;
    }

    .widget-container {
        flex-direction: column;
    }

    .widget {
        margin-bottom: 10px;
    }

    input[type="text"], select, button {
        width: 100%;
        box-sizing: border-box;
    }

    /* Geri Dön Butonunu küçült */
    .geri_don_buton {
        width: 100%;
        padding: 8px;
        font-size: 12px;
    }
}