body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fb;
    color: #2c3e50;
}

.app-shell {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: #ffffff;
    border-right: 1px solid #e4e9f2;
    padding: 24px 20px;
    position: fixed;
    top: 0;
    bottom: 0;
}

.sidebar .brand {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.sidebar nav a {
    display: block;
    padding: 10px 12px;
    border-radius: 8px;
    color: #4a5568;
    margin-bottom: 6px;
    text-decoration: none;
    transition: background .2s ease;
}

.sidebar nav a:hover,
.sidebar nav a.active {
    background: #e6f0ff;
    color: #0d6efd;
}

.sidebar .user-info {
    margin-bottom: 20px;
}

.sidebar-footer {
    position: absolute;
    bottom: 20px;
    left: 20px;
    right: 20px;
}

.main {
    margin-left: 260px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.topbar {
    background: #ffffff;
    border-bottom: 1px solid #e4e9f2;
    padding: 20px 32px;
}

.content-wrapper {
    padding: 30px 40px;
}

.card {
    border: none;
    border-radius: 16px;
}

.dashboard-card h3 {
    font-weight: 600;
}

.icon-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #e6f0ff;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0d6efd;
    font-size: 1.25rem;
}

.table thead th {
    background: #f2f6ff;
    border: none;
}

.table tbody tr {
    background: #ffffff;
}

.badge-status {
    padding: 6px 10px;
    border-radius: 999px;
}

.login-shell {
    background: linear-gradient(135deg, #8ec5fc 0%, #e0c3fc 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    background: #ffffff;
    padding: 40px;
    width: 420px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(15, 23, 42, .25);
}

.btn-primary {
    background-color: #0d6efd;
    border-color: #0d6efd;
}

.btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
}

.form-control {
    border-radius: 10px;
    border: 1px solid #d6dae3;
}

.table-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 12px 24px rgba(149, 157, 165, 0.2);
}

@media (max-width: 992px) {
    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
    }

    .main {
        margin-left: 0;
    }
}