/* ============================================
   Suda Shopping — Responsive Design (Mobile-First)
   ============================================ */

/* Base: Mobile (default) */
.page-container {
    flex-direction: column;
    padding: var(--space-md);
}

.sidebar {
    width: 100%;
}

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

.header-inner {
    gap: var(--space-sm);
}

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

.header-actions {
    margin-left: 0;
}

.comparison-bar {
    bottom: var(--space-sm);
    left: var(--space-sm);
    right: var(--space-sm);
    transform: none;
    border-radius: var(--radius-lg);
    justify-content: space-between;
}

/* ── Small Tablet (≥ 480px) ── */
@media (min-width: 480px) {
    .entity-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .header-search {
        order: 0;
        flex-basis: auto;
        max-width: 320px;
    }
}

/* ── Tablet (≥ 640px) ── */
@media (min-width: 640px) {
    .entity-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .page-container {
        padding: var(--space-lg);
    }

    .header-inner {
        gap: var(--space-md);
    }

    .header-search {
        max-width: 400px;
    }

    .comparison-bar {
        bottom: var(--space-md);
        left: 50%;
        right: auto;
        transform: translateX(-50%);
        border-radius: var(--radius-xl);
    }
}

/* ── Desktop (≥ 768px) ── */
@media (min-width: 768px) {
    .entity-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .page-container {
        flex-direction: row;
    }

    .sidebar {
        width: var(--sidebar-width);
        flex-shrink: 0;
    }

    .header-search {
        max-width: 480px;
    }
}

/* ── Large Desktop (≥ 1024px) ── */
@media (min-width: 1024px) {
    .entity-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .page-container {
        padding: var(--space-lg) var(--space-xl);
    }
}

/* ── Extra Large Desktop (≥ 1280px) ── */
@media (min-width: 1280px) {
    .entity-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-lg);
    }
}