@keyframes blink {
    0%, 50%, 100% {
        opacity: 1;
    }
    25%, 75% {
        opacity: 0;
    }
}

.logo {
    animation: blink 3s ease 0s 1 normal forwards;
    outline: 1px solid #ff0000;
    background: linear-gradient(0deg, #ff0000 0%, #c0f500 100%);
    text-align: center;
    line-height: 2;
    font-size: 50px;
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
}

body {
    font-family: 'Helvetica Neue', sans-serif;
    background-color: #2c3e50;
    color: #ecf0f1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    padding: 20px;
}

form {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 400px;
    background-color: #34495e;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.input {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid #1abc9c;
    border-radius: 4px;
    font-size: 16px;
    background-color: #2c3e50;
    color: #ecf0f1;
    transition: border-color 0.3s, background-color 0.3s;
}

.input:focus {
    border-color: #16a085;
    outline: none;
    background-color: #34495e;
}

.button {
    width: 100%;
    background-color: #1abc9c;
    color: white;
    padding: 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

.button:hover {
    background-color: #16a085;
}

#todoList {
    list-style: none;
    padding: 0;
    margin-top: 20px;
    width: 100%;
    max-width: 400px;
}

#todoList li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    margin-top: 10px;
    background-color: #34495e;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s;
}

#todoList li:hover {
    background-color: #3b566e;
}

#todoList button {
    background-color: #e74c3c;
    border: none;
    border-radius: 4px;
    color: #ecf0f1;
    cursor: pointer;
    padding: 6px 10px;
    font-size: 14px;
    transition: background-color 0.3s;
}

#todoList button:hover {
    background-color: #c0392b;
}