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

.sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 30;
    display: flex;
    width: var(--sidebar-width);
    flex-direction: column;
    padding: var(--space-6);
    border-right: 1px solid var(--color-border);
    background: var(--color-sidebar);
    box-shadow: 10px 0 30px rgba(64, 56, 48, 0.04);
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-height: 48px;
}

.brand-logo {
    display: block;
    width: min(100%, 160px);
    aspect-ratio: 4 / 3;
    object-fit: contain;
    object-position: center;
    border-radius: var(--radius-md);
}

.brand-logo-stack {
    display: grid;
    width: min(100%, 160px);
}

.brand-logo-stack .brand-logo {
    grid-area: 1 / 1;
    width: 100%;
}

.brand-logo-dark {
    opacity: 0;
    pointer-events: none;
}

:root[data-theme="dark"] .brand-logo-light {
    opacity: 0;
}

:root[data-theme="dark"] .brand-logo-dark {
    opacity: 1;
}

.brand-mark {
    display: grid;
    width: 46px;
    height: 46px;
    flex: 0 0 46px;
    place-items: center;
    border-radius: var(--radius-md);
    background: var(--color-primary);
    color: #fff;
    font-weight: 700;
    box-shadow: 0 12px 24px rgba(200, 155, 60, 0.24);
}

.brand strong,
.brand small {
    display: block;
}

.brand strong {
    font-size: var(--font-size-lg);
    line-height: 1.2;
}

.brand small {
    margin-top: 2px;
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
}

.sidebar-nav {
    display: grid;
    gap: var(--space-2);
    margin-top: var(--space-4);
}

.nav-link {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
    min-height: 40px;
    padding: 0 12px;
    border: 1px solid transparent;
    border-radius: 8px;
    color: var(--color-text-secondary);
    font-weight: 700;
}

.nav-icon {
    display: grid;
    width: 18px;
    height: 18px;
    flex: 0 0 18px;
    place-items: center;
    color: #7C6252;
}

.nav-icon .svg-icon {
    width: 17px;
    height: 17px;
    stroke-width: 1.75;
}

.nav-link:hover {
    border-color: transparent;
    background: rgba(200, 155, 60, 0.08);
    color: var(--color-text);
}

.nav-link.is-active {
    border-color: transparent;
    background: linear-gradient(90deg, rgba(200, 155, 60, 0.17), rgba(200, 155, 60, 0.07));
    color: #9A6A1F;
    box-shadow: none;
}

.nav-link.is-active .nav-icon {
    color: #B98725;
}

:root[data-theme="dark"] .nav-icon {
    color: rgba(243, 232, 228, 0.68);
}

:root[data-theme="dark"] .nav-link:hover {
    background: rgba(207, 120, 175, 0.08);
}

:root[data-theme="dark"] .nav-link.is-active {
    background: rgba(207, 120, 175, 0.13);
    color: var(--color-text);
}

:root[data-theme="dark"] .nav-link.is-active .nav-icon {
    color: var(--color-secondary);
}

.sidebar-footer {
    margin-top: auto;
    padding-top: var(--space-6);
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
}

.main {
    display: flex;
    flex: 1;
    flex-direction: column;
    min-width: 0;
    margin-left: var(--sidebar-width);
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-5);
    min-height: var(--topbar-height);
    padding: var(--space-5) var(--space-8);
    border-bottom: 1px solid var(--color-border);
    background: rgba(247, 245, 242, 0.86);
    backdrop-filter: blur(18px);
}

.topbar-title {
    min-width: 0;
}

.topbar-search {
    flex: 1;
    min-width: 220px;
}

.topbar-title h1 {
    margin: 0;
    color: var(--color-text);
    font-size: var(--font-size-2xl);
    line-height: 1.2;
}

.topbar-title p {
    margin: 4px 0 0;
    color: var(--color-text-secondary);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.topbar-user strong,
.topbar-user small {
    display: block;
}

.topbar-user strong {
    color: var(--color-text);
    font-size: var(--font-size-md);
    line-height: 1.2;
}

.topbar-user small {
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
}

.content {
    flex: 1;
    padding: var(--space-8);
}

.content-inner {
    width: 100%;
}

.footer {
    display: flex;
    position: relative;
    z-index: 1;
    flex: 0 0 auto;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-5) var(--space-8);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.mobile-backdrop {
    position: fixed;
    inset: 0;
    z-index: 25;
    display: none;
    background: rgba(64, 56, 48, 0.22);
}

body.sidebar-open .mobile-backdrop {
    display: block;
}

@media (max-width: 980px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform .2s ease;
    }

    body.sidebar-open .sidebar {
        transform: translateX(0);
    }

    .main {
        margin-left: 0;
    }

    .topbar {
        padding: var(--space-4);
    }

    .content {
        padding: var(--space-4);
    }
}

@media (max-width: 700px) {
    .topbar {
        align-items: flex-start;
        flex-wrap: wrap;
    }

    .topbar-actions {
        width: 100%;
        justify-content: space-between;
    }

    .topbar-search {
        order: 3;
        width: 100%;
        flex-basis: 100%;
    }

    .footer {
        flex-direction: column;
        padding: var(--space-4);
    }
}