:root {
    --erp-bg: #f5f7fb;
    --erp-sidebar: #182234;
    --erp-accent: #0f766e;
    --erp-border: #d9e1ea;
}

body {
    background: var(--erp-bg);
    color: #1f2937;
}

.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 280px 1fr;
}

.sidebar {
    background: var(--erp-sidebar);
    color: #eef2f7;
    padding: 18px;
}

.sidebar a {
    color: #cbd5e1;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    margin-bottom: 4px;
}

.sidebar a:hover,
.sidebar a.active {
    background: rgba(255, 255, 255, .1);
    color: #fff;
}

.brand {
    font-weight: 800;
    letter-spacing: .2px;
    font-size: 1.05rem;
    padding: 10px 12px 18px;
}

.content {
    padding: 22px;
}

.topbar,
.panel {
    background: #fff;
    border: 1px solid var(--erp-border);
    border-radius: 8px;
}

.topbar {
    min-height: 64px;
    padding: 12px 18px;
    margin-bottom: 18px;
}

.panel {
    padding: 16px;
    margin-bottom: 18px;
}

.metric {
    border-left: 4px solid var(--erp-accent);
}

.table thead th {
    background: #eef3f8;
    font-size: .82rem;
    text-transform: uppercase;
}

.badge-soft {
    background: #e6f4f1;
    color: #0f766e;
}

.form-control,
.form-select,
.btn {
    border-radius: 7px;
}

.btn-primary {
    background: var(--erp-accent);
    border-color: var(--erp-accent);
}

.login-screen {
    min-height: 100vh;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #edf2f7, #dce7ef);
}

.login-card {
    width: min(430px, 92vw);
    background: #fff;
    border: 1px solid var(--erp-border);
    border-radius: 8px;
    padding: 28px;
}

@media (max-width: 992px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: sticky;
        top: 0;
        z-index: 10;
    }

    .sidebar nav {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 4px;
    }
}