/* ============================================
   Sidebar Layout
   ============================================ */

/* Main 3-column layout */
.main-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    max-width: 1920px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Desktop: Show sidebars */
@media (min-width: 1280px) {
    .main-layout {
        grid-template-columns: 180px 1fr 180px;
        gap: var(--spacing-xl);
    }
}

@media (min-width: 1440px) {
    .main-layout {
        grid-template-columns: 250px 1fr 250px;
    }
}

@media (min-width: 1600px) {
    .main-layout {
        grid-template-columns: 300px 1fr 300px;
    }
}

/* Sidebar containers */
.sidebar-left,
.sidebar-right {
    display: none;
}

@media (min-width: 1280px) {

    .sidebar-left,
    .sidebar-right {
        display: block;
    }
}

/* Sidebar ad styling */
.sidebar-ad {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    box-shadow: var(--shadow-md);
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Sticky positioning */
.sticky-ad {
    position: sticky;
    top: calc(60px + var(--spacing-md));
}

/* Main content wrapper */
.main-content {
    width: 100%;
    max-width: 100%;
}