body {
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.sidebar {
    width: 260px;
    height: 100vh;
    background-color: #2c3e50;
    color: #ecf0f1;
    position: fixed;
    top: 0;
    left: 0;
    display: flex;
    flex-direction: column;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.sidebar-brand {
    padding: 25px 20px;
    background-color: #1a252f;
    text-align: center;
}

.sidebar-brand h2 {
    margin: 0;
    font-size: 20px;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.sidebar-brand p {
    margin: 5px 0 0 0;
    font-size: 12px;
    color: #bdc3c7;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-menu {
    list-style: none;
    padding: 20px 0;
    margin: 0;
    flex-grow: 1;
}

.sidebar-menu li {
    margin-bottom: 5px;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: #bdc3c7;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.sidebar-menu a i {
    font-size: 18px;
}

.sidebar-menu a:hover {
    background-color: #34495e;
    color: #ffffff;
    padding-left: 25px;
}

.sidebar-menu a.active {
    background-color: #e67e22;
    color: #ffffff;
    border-left: 4px solid #d35400;
}