body {
    background: #f5f7fb;
    font-family: Arial, Helvetica, sans-serif;
}

.sidebar {
    width: 250px;
    min-height: calc(100vh - 56px);
    flex-shrink: 0;
}

.menu-link {
    display: block;
    color: #dbe4ff;
    text-decoration: none;
    padding: 10px 12px;
    border-radius: 7px;
    margin-bottom: 4px;
}

.menu-link:hover {
    background: rgba(255,255,255,.1);
    color: #fff;
}

.content {
    min-width: 0;
}

.stat-card {
    border: 0;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,.06);
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f5f7fb;
}

.login-card {
    width: 100%;
    max-width: 430px;
    border: 0;
    border-radius: 16px;
    box-shadow: 0 10px 35px rgba(0,0,0,.10);
}

@media (max-width: 768px) {
    .sidebar {
        width: 210px;
    }
    .content {
        padding: 16px !important;
    }
}