body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f0f4f8;
    color: #333;
    text-align: center;
    background-image: linear-gradient(to bottom right, #ffffff, #e3f2fd);
}

.container {
    width: 60%;
    max-width: 700px;
    margin: 40px auto;
    background: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s ease;
}

.container:hover {
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

h1,
h2 {
    margin-bottom: 15px;
    color: #444;
}

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

li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px;
    background: #fafafa;
    margin: 8px 0;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    transition: transform 0.2s ease, background-color 0.3s ease;
}

li:hover {
    transform: scale(1.02);
    background-color: #f0f8ff;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-right: 15px;
}

.user-info {
    flex-grow: 1;
    text-align: left;
}

button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 6px 12px;
    cursor: pointer;
    border-radius: 6px;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

button:hover {
    background-color: #45a049;
    transform: translateY(-2px);
}

button.delete-btn {
    background-color: #f44336;
}

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

input[type="text"] {
    padding: 8px;
    border-radius: 6px;
    border: 1px solid #ccc;
    margin-right: 10px;
    width: 70%;
    max-width: 300px;
    box-sizing: border-box;
    transition: border-color 0.3s ease;
}

input[type="text"]:focus {
    border-color: #4CAF50;
    outline: none;
    box-shadow: 0 0 8px rgba(72, 239, 128, 0.5);
}

.random-btn {
    margin-top: 15px;
    background-color: #2196F3;
}

.random-btn:hover {
    background-color: #1976D2;
}

.random-user-card {
    display: inline-block;
    padding: 10px;
    margin-top: 15px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    animation: fade-in 0.5s ease;
}

@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}