body {
    font-family: Arial, sans-serif;
    background-color: #f3f4f6;
    color: #333;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 600px;
    margin: 50px auto;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    text-align: center;
    margin-bottom: 20px;
}

.primary-button {
    display: block;
    margin: 0 auto 20px;
    padding: 10px 20px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
}

.primary-button:hover {
    background-color: #45a049;
}

.hidden {
    display: none;
}

#todo-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

form input, form select, form button {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.secondary-button {
    background-color: #f44336;
    color: white;
    border: none;
    padding: 10px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

.secondary-button:hover {
    background-color: #e53935;
}

#task-list ul {
    list-style: none;
    padding: 0;
}

#task-list li {
    padding: 10px;
    background: #f1f1f1;
    margin: 10px 0;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#task-list li span {
    display: inline-block;
    padding: 5px 10px;
    border-radius: 5px;
    color: white;
    font-size: 14px;
}

#task-list li span.Video {
    background-color: #2196F3;
}

#task-list li span {
    background-color: #FF9800;
}

#task-list li span.Tekrar {
    background-color: #9C27B0;
}

#no-tasks-message {
    text-align: center;
    color: #888;
}
#completed-tasks {
    margin-top: 20px;
    padding: 10px;
    background-color: #e8f5e9;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

#completed-tasks h2 {
    color: #388e3c;
    text-align: center;
}

#completed-tasks ul li {
    background-color: #dcedc8;
    color: #33691e;
    /*text-decoration: line-through;*/
}