body.with-fixed-topbar {
    padding-top: 64px;
}

.navbar.fixed {
    position: fixed;
    inset: 0 0 auto 0;
    min-height: 64px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding: .75rem max(1rem, 5vw);
    z-index: 1000;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

[data-theme="dark"] .navbar.fixed {
    background: var(--color-surface);
}

.landing-shell .navbar.fixed {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.auth-page {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.theme-toggle-wrapper {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 100;
}

.auth-wrapper {
    display: grid;
    grid-template-columns: 1fr minmax(320px, 400px);
    gap: 3rem;
    align-items: center;
    width: 100%;
    max-width: 1100px;
    padding: 2rem;
}

.auth-showcase {
    padding: 1rem;
}

.auth-panel {
    width: 100%;
    padding: 2rem;
    border-radius: var(--radius-xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
}

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

.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    border-right: 1px solid var(--color-border);
    background: var(--color-surface);
    padding: 1.5rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    height: 100vh;
    position: sticky;
    top: 0;
    overflow-y: auto;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .5rem;
}

.sidebar-brand strong {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
}

.sidebar-nav {
    display: grid;
    gap: .25rem;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .625rem .875rem;
    border-radius: var(--radius-md);
    color: var(--color-text-soft);
    cursor: pointer;
    border: none;
    background: transparent;
    text-align: left;
    font-weight: 500;
    font-size: .875rem;
    transition: all var(--transition-base);
}

.sidebar-item:hover {
    background: var(--color-surface-soft);
    color: var(--color-text);
}

.sidebar-item.active {
    background: var(--color-accent);
    color: white;
}

.sidebar-footer {
    margin-top: auto;
    display: grid;
    gap: .5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.main-content {
    flex: 1;
    padding: 1.5rem 2rem;
    max-width: 1400px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 1.5rem;
    align-items: start;
}

.dashboard-main {
    display: grid;
    gap: 1.5rem;
}

.dashboard-sidebar {
    display: grid;
    gap: 1rem;
    position: sticky;
    top: 1.5rem;
}

.page-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}

.page-header p {
    color: var(--color-text-soft);
    margin: .25rem 0 0;
    font-size: .875rem;
}

.mobile-topbar {
    display: none;
    align-items: center;
    justify-content: space-between;
    padding: .75rem 1rem;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-surface);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.admin-dashboard {
    display: grid;
    gap: 1.5rem;
}

.admin-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
}

.action-card {
    padding: 1.25rem;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    gap: .75rem;
}

.action-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.action-card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--color-accent-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.action-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

.action-card p {
    font-size: .875rem;
    color: var(--color-text-soft);
    margin: 0;
}

@media (max-width: 1024px) {
    .auth-wrapper {
        grid-template-columns: 1fr;
        padding: 1rem;
    }

    .auth-showcase {
        display: none;
    }

    .app-shell {
        display: block;
    }

    .sidebar {
        position: fixed;
        left: -100%;
        top: 0;
        width: min(280px, 85vw);
        z-index: 1100;
        transition: left var(--transition-base);
        box-shadow: var(--shadow-xl);
    }

    .sidebar.open {
        left: 0;
    }

    .mobile-topbar {
        display: flex;
    }

    .main-content {
        padding: 1rem;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .dashboard-sidebar {
        position: static;
    }
}

@media (max-width: 640px) {
    .admin-actions {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        flex-direction: column;
        gap: .75rem;
    }
    
    .page-header h1 {
        font-size: 1.25rem;
    }
}