:root {
    color-scheme: light;
}

body {
    min-height: 100vh;
    margin: 0;
    background: #fafaf7;
    color: #111827;
}

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

.app-main {
    flex: 1;
    display: flex;
    gap: 2rem;
    padding: 2rem;
}

.app-sidebar {
    width: 240px;
    flex-shrink: 0;
    padding: 1.5rem;
    border-radius: 1.5rem;
    background: linear-gradient(180deg, #111827 0%, #1e3a8a 100%);
    color: #fafaf7;
}

.app-sidebar h1 {
    margin: 0 0 1.5rem;
    font-size: 1.4rem;
    line-height: 1.2;
}

.nav-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.nav-link {
    display: block;
    padding: 0.9rem 1rem;
    border-radius: 0.9rem;
    color: inherit;
    text-decoration: none;
    background: rgba(255, 255, 255, 0.08);
}

.nav-link.active {
    background: #fafaf7;
    color: #111827;
    font-weight: 600;
}

.app-content {
    flex: 1;
    padding: 2rem;
    border-radius: 1.5rem;
    background: white;
    box-shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
}

.app-content h2 {
    margin-top: 0;
}

.app-footer {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    padding: 1rem 2rem 2rem;
    flex-wrap: wrap;
}

.app-footer a {
    color: #1d4ed8;
}

@media (max-width: 840px) {
    .app-main {
        flex-direction: column;
        padding: 1rem;
    }

    .app-sidebar,
    .app-content {
        width: 100%;
    }
}