/* ===== Layout: Shell, Sidebar, Topbar ===== */
.shell {
    display: grid;
    grid-template-columns: var(--sbw) 1fr;
    grid-template-rows: var(--top-h) 1fr;
    min-height: 100vh;
}

.sidebar {
    grid-row: 1 / span 2;
    grid-column: 1;
    background: linear-gradient(180deg, var(--panel), var(--panel-2));
    border-right: 1px solid var(--border);
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
}

.brand .logo {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 14px rgba(206, 255, 0, 0.7);
}

.nav {
    padding: 10px;
}

.nav .section {
    margin: 12px 0 6px;
    color: var(--muted);
    font-size: 12px;
    letter-spacing: .4px;
    text-transform: uppercase;
}

.nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 10px;
    color: inherit;
}

.nav a:hover {
    background: var(--panel-3);
}

.nav a.active {
    background: var(--panel-3);
    outline: 1px solid var(--border);
    box-shadow: inset 0 0 0 1px rgba(206, 255, 0, .25);
}

.topbar {
    grid-row: 1;
    grid-column: 2;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 16px;
    border-bottom: 1px solid var(--border);
    background: var(--panel);
}

.grow {
    flex: 1;
}

.pill {
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--panel-2);
    color: var(--muted);
}

/* Accent button style for CTA */
.btn-accent {
    background: var(--accent);
    color: #111;
    border: 1px solid color-mix(in srgb, var(--accent) 70%, #000 30%);
}

.btn-accent:hover {
    background: var(--accent-2);
}