@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #f0f2f5;
}

.sidebar {
    width: 250px;
    background: #333;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

.menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.menu li {
    margin: 15px 0;
    position: relative;
    overflow: hidden;
}

.menu-link {
    text-decoration: none;
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    display: block;
    padding: 10px 20px;
    border-radius: 10px;
    background: #444;
    position: relative;
    transition: background 0.3s, transform 0.3s;
}

.menu-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 4px;
    background: #ff6f61;
    transition: width 0.3s;
}

.menu-link:hover {
    background: #555;
}

.menu-link:hover::after {
    width: 100%;
}
