/* --- SIDEBAR --- */
.sidebar {
    width: 320px;
    background: #20232a;       /* fondo sidebar */
    color: #fff;
    padding: 20px;
    position: fixed;
    height: 100%;
    overflow-y: auto;
    box-shadow: 3px 0 15px rgba(0,0,0,0.5);
    transition: all 0.3s ease;
}
.sidebar-top {
    margin-bottom: 30px;
    text-align: center;
    border-bottom: 1px solid #2a2a36;
    padding-bottom: 15px;
}
.sidebar h2 { color: #61dafb; margin-bottom: 15px; text-align: center; text-shadow: 0 0 8px #61dafb; }
.sidebar ul { list-style: none; }
.sidebar ul li { margin: 12px 0; }
.sidebar ul li a {
    color: #e0e0e0;
    text-decoration: none;
    display: block;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.3s ease;
    position: relative;
}
.sidebar ul li a::before {
    content: "•";
    color: #61dafb;
    margin-right: 8px;
    opacity: 0;
    transition: all 0.3s ease;
}
.sidebar ul li a:hover {
    background: #21a1f1;
    color: #181818;
    transform: translateX(5px) scale(1.05);
}
.sidebar ul li a:hover::before { opacity: 1; }