.main-layout-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100%;
    background-color: var(--bg-color, #fff);
}

.main-layout-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    flex: 1;
    overflow: hidden;
    gap: 0;
    transition: grid-template-columns 0.3s ease;
}

.main-layout-grid:has(> .left-nav.collapsed) {
    grid-template-columns: 60px 1fr;
}

.main-layout-grid > .left-nav {
    grid-column: 1;
}

.main-layout-grid > .main-content {
    grid-column: 2;
}

.right-content {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    flex: 1;
    height: 100%;
}

.right-content > .main-content {
    flex: 1;
    overflow: hidden;
}

.right-content > .app-footer {
    flex-shrink: 0;
}

/* Responsive design */
@media (max-width: 1200px) {
    .main-layout-grid {
        grid-template-columns: 250px 1fr;
    }

    .left-nav {
        width: 250px !important;
    }
}

@media (max-width: 768px) {
    .main-layout-grid {
        grid-template-columns: 1fr;
    }

    .left-nav {
        display: none;
        position: fixed;
        left: 0;
        top: 110px;
        width: 250px;
        height: calc(100vh - 110px);
        z-index: 100;
        background-color: var(--sidebar-bg, #f5f5f5);
    }

    .left-nav.mobile-open {
        display: flex;
    }

    .main-layout-grid > .left-nav {
        grid-column: auto;
    }

    .main-layout-grid > .main-content {
        grid-column: 1;
    }
}

@media (max-width: 480px) {
    .main-layout-container {
        height: auto;
        min-height: 100vh;
    }

    .main-layout-grid {
        grid-template-columns: 1fr;
        flex: none;
    }
}

/* Dark theme support */
@media (prefers-color-scheme: dark) {
    .main-layout-container {
        --bg-color: #1a1a1a;
        --text-primary: #e0e0e0;
        --text-secondary: #999;
        --border-color: #444;
        --sidebar-bg: #2a2a2a;
        --header-bg: #333;
        --top-nav-bg: #2a2a2a;
        --admin-bar-bg: #252525;
        --hover-bg: #3a3a3a;
        --placeholder-bg: #2a2a2a;
        --scrollbar-thumb: #555;
        --scrollbar-thumb-hover: #777;
    }
}

/* Print styles */
@media print {
    .top-nav,
    .admin-bar,
    .left-nav {
        display: none;
    }

    .main-layout-grid {
        grid-template-columns: 1fr;
    }

    .main-content {
        height: auto;
    }
}