body {
    background: #f4f6f9;
}
.login-page {
    min-height: 100vh;
}
.login-card {
    width: 380px;
    border: none;
    border-radius: 14px;
}
.stat-card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 1px 4px rgba(0,0,0,.08);
}
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.card-header {
    background: #fff;
    font-weight: 600;
    border-bottom: 1px solid #eee;
}

/* Sidebar layout */
.app-layout {
    min-height: 100vh;
}
.sidebar {
    width: 250px;
    min-height: 100vh;
    background: #1c2333;
}
.sidebar-link {
    color: rgba(255,255,255,.75);
    border-radius: 8px;
    margin-bottom: 2px;
}
.sidebar-link:hover {
    background: rgba(255,255,255,.08);
    color: #fff;
}
.sidebar-link.active {
    background: #3b82f6;
    color: #fff;
}
.main-content {
    flex: 1;
    min-width: 0;
}