/* ============================================
   RESPONSIVE — Mobile-first breakpoints
   ============================================ */

/* ── Base: hide mobile-only elements ──────────── */
.filter-toggle-btn { display: none; }
.detail-sticky-cta { display: none; }

/* ── Tablet (max 1024px) ─────────────────────── */
@media (max-width: 1024px) {
    .footer-grid          { grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
    .mega-menu__grid      { grid-template-columns: repeat(2, 1fr); }
    .dash-stats           { grid-template-columns: repeat(2, 1fr); }
    .dash-grid            { grid-template-columns: 1fr; }

}

/* ── Small Tablet (max 900px) ────────────────── */
@media (max-width: 900px) {
    .sim-grid             { grid-template-columns: 1fr; }
    .listing-layout       { flex-direction: column; }
    .filter-sidebar       { width: 100%; position: static; }
    .cta-banner           { flex-direction: column; text-align: center; padding: 24px var(--space-lg); }
    .detail-options       { flex-direction: column; }

    /* Nav → hamburger */
    .mobile-nav-bar { display: block; }
    .mobile-menu-toggle { display: flex; }
    .cat-icon-bar { display: none; }

    /* Filter sidebar collapsible */
    .filter-sidebar {
        max-height: 0;
        overflow: hidden;
        padding: 0 var(--space-lg);
        border: none;
        transition: max-height 0.4s var(--ease-out), padding 0.4s;
    }
    .filter-sidebar.is-open {
        max-height: 2000px;
        padding: var(--space-lg);
        border: 1px solid var(--border);
    }
    .filter-toggle-btn {
        display: flex;
        align-items: center;
        gap: var(--space-sm);
        padding: 12px var(--space-md);
        background: var(--white);
        border: 1px solid var(--border);
        border-radius: 4px;
        font-weight: 700;
        font-size: var(--text-sm);
        margin-bottom: var(--space-md);
        width: 100%;
        justify-content: center;
    }
}

/* ── Mobile (max 600px) ──────────────────────── */
@media (max-width: 600px) {
    :root { --space-lg: 16px; }

    /* Mobile bottom bar */
    .mobile-bar { display: block; }
    body { padding-bottom: var(--mobile-bar-h); }
    .float-chat { bottom: calc(var(--mobile-bar-h) + 16px); }

    /* Header — compact layout */
    .top-bar { padding: 8px 0; }
    .top-bar__inner {
        flex-wrap: wrap;
        gap: 8px;
        justify-content: space-between;
    }
    .site-logo__text { font-size: 15px; }
    .header-contact {
        margin-left: auto;
    }
    .header-contact__phone {
        font-size: 12px;
        padding: 4px 10px;
        border-radius: 3px;
        margin-left: 0;
    }
    .header-search {
        order: 3;
        flex-basis: 100%;
        max-width: 100%;
        border-width: 1.5px;
    }
    .header-search__input { padding: 8px 12px; font-size: 13px; }
    .header-search__btn { padding: 8px 16px; font-size: 13px; }

    /* Nav bar compact */
    .site-header { box-shadow: 0 1px 4px rgba(0,0,0,0.15); }

    /* Grid */
    .sim-grid { gap: 12px; }
    .sim-card__number { font-size: 22px; }
    .sim-card__carrier-icon { width: 38px; height: 38px; }
    .sim-card__carrier-abbr { width: 38px; height: 38px; font-size: 10px; }
    .sim-card__actions { flex-wrap: wrap; }

    /* Footer — 2x2 grid on mobile */
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 20px 16px; }
    .footer-col h4 { font-size: 12px; margin-bottom: 10px; }
    .footer-col a { font-size: 12px; margin-bottom: 6px; }
    .trust-bar__items { grid-template-columns: repeat(2, 1fr); gap: 12px 16px; font-size: 12px; }

    /* Popup */
    .popup { padding: var(--space-lg); }

    /* Sim row */
    .sim-row { grid-template-columns: 1fr auto; gap: var(--space-sm); }
    .sim-row__carrier { display: none; }

    /* Dashboard */
    .dash-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
    .stat-card { padding: 16px; }

    /* Sticky CTA */
    .detail-sticky-cta {
        position: fixed;
        bottom: var(--mobile-bar-h);
        left: 0; right: 0;
        background: var(--white);
        border-top: 1px solid var(--border);
        padding: 12px var(--space-lg);
        display: flex;
        gap: var(--space-sm);
        z-index: 150;
        box-shadow: 0 -4px 16px rgba(0,0,0,0.08);
    }
    .detail-sticky-cta .btn { flex: 1; }
}

/* ── Very small (max 380px) ──────────────────── */
@media (max-width: 380px) {
    .site-logo__text { font-size: 13px; }
    .header-contact__phone { font-size: 11px; padding: 3px 8px; }
    .footer-grid { grid-template-columns: 1fr; }
}

/* ── Print ───────────────────────────────────── */
@media print {
    .mobile-bar,
    .float-chat,
    .mobile-nav-bar,
    .cat-icon-bar,
    .mobile-menu-overlay,
    .detail-sticky-cta,
    .popup-overlay,
    .filter-toggle-btn,
    .header-search,
    .mobile-menu-toggle { display: none !important; }

    body { padding-bottom: 0; }
    .hp-sidebar-left,
    .hp-sidebar-right { display: none; }
    .hp-layout,
    .sd-detail-layout { display: block; }
    .container { max-width: 100%; }
}