/* =============================================
   RESPONSIVE — Mobile-first adaptive layer
   Breakpoints: 380 / 480 / 768 / 1024
   Структура:
     1. Desktop-only (≥769) — каталог-фільтри
     2. Tablet (≤1024)
     3. Mobile base (≤768) — основний блок, по компонентах
     4. Small mobile (≤480)
     5. XS (≤380)
   ============================================= */

/* ═══════════════════════════════════════════
   1. DESKTOP-ONLY (≥769px) — catalog filter machinery
   ═══════════════════════════════════════════ */
@media (min-width: 769px) {
  .sidebar-toggle      { display: none; }
  .sidebar-body        { display: block !important; }
  .filter-group__title { cursor: default; pointer-events: none; }
  .filter-group__arrow { display: none; }
  .catalog-sidebar .filter-group[data-type-section] > .filter-group__title {
    cursor: pointer; pointer-events: auto;
  }
  .catalog-sidebar .filter-group[data-type-section] > .filter-group__title .filter-group__arrow {
    display: inline-flex;
  }
  .filter-group__body,
  .filter-group--collapsed .filter-group__body {
    display: flex !important; flex-direction: column !important;
    align-items: flex-start !important; gap: 4px; padding: 0 0 10px;
  }
  #type-filter-btns .filter-btn {
    transition: background 0.18s, color 0.18s, border-color 0.18s !important;
  }
  .filter-group__body-wrap { display: block; }
  .catalog-sidebar .filter-group[data-type-section] > .filter-group__body-wrap {
    overflow: hidden; max-height: 1200px; transition: max-height 0.36s ease;
  }
  .catalog-sidebar .filter-group--collapsed[data-type-section] > .filter-group__body-wrap {
    max-height: 0 !important;
  }
  .catalog-sidebar .filter-group[data-type-section] .filter-group__body {
    display: block !important; padding: 10px 0 14px;
  }
  .catalog-sidebar .filter-group[data-type-section] .filter-group__arrow {
    transition: transform 0.28s cubic-bezier(0.4,0,0.2,1);
  }
  .catalog-sidebar .filter-group--collapsed[data-type-section] > .filter-group__title .filter-group__arrow {
    transform: rotate(-90deg);
  }
  .type-filter-sub__label { cursor: default; pointer-events: none; }
  .type-filter-sub__arrow { display: none; }
  .type-filter-sub--collapsed .type-filter-sub__btns { max-height: 600px !important; }
}

/* ═══════════════════════════════════════════
   2. TABLET (≤1024px)
   ═══════════════════════════════════════════ */
@media (max-width: 1024px) {
  .container { padding: 0 24px; }
  .header__nav { gap: 18px; }
  .header__nav a { font-size: 0.9rem; }
  .hero { min-height: 460px; }
  .hero__title { font-size: 3rem !important; }
  .hero::after { font-size: 10rem; right: 4%; }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-card--wide { grid-column: span 2; }
  .features-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .about-grid { gap: 40px; }
  .catalog-layout { grid-template-columns: 240px 1fr; gap: 20px; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .checkout-grid { gap: 24px; }
  .product-detail-grid { gap: 36px; }
}

/* ═══════════════════════════════════════════
   3. MOBILE BASE (≤768px) — головний адаптивний блок
   ═══════════════════════════════════════════ */
@media (max-width: 768px) {

  /* ── 3.0 Глобальні guard-и ──────────────────────────────── */
  html, body { overflow-x: hidden; }
  .container { padding: 0 16px; max-width: 100%; }

  /* Медіа і таблиці не вилазять за viewport */
  img, video, iframe, canvas, svg, picture { max-width: 100%; height: auto; }
  table { display: block; max-width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  pre, code { white-space: pre-wrap; word-break: break-word; }
  textarea,
  input[type="text"], input[type="email"], input[type="tel"],
  input[type="number"], input[type="url"], input[type="password"], select {
    max-width: 100%; box-sizing: border-box;
    font-size: 16px !important; /* iOS не зумить focus при ≥16px */
  }

  /* Touch targets ≥ 40px (з опт-аутом для дрібних icon-кнопок) */
  button, .btn, select, input[type="submit"], input[type="button"] { min-height: 40px; }
  button.no-touch-min, .btn--icon,
  .qty-control button, .cart-item__qty button, .cart-item__remove,
  .header__burger, .header__cart, .header__account,
  .wishlist-btn, .filter-group__title, .close-btn,
  button[style*="width:"][style*="height:"] { min-height: 0; }

  /* Горизонтальні скрол-контейнери — виняток */
  .scroll-x, [data-scroll-x="1"] {
    overflow-x: auto !important; -webkit-overflow-scrolling: touch;
  }

  /* Менше вертикального padding — коротший скрол */
  .section { padding: 36px 0 !important; }
  .hero { padding: 40px 0 32px !important; min-height: auto; }

  /* Форми компактніше */
  .form-group { margin-bottom: 12px !important; }
  .form-group label { font-size: 0.85rem; margin-bottom: 4px; }

  /* Модалки — не вище 92vh */
  .modal-overlay > * { max-height: 92vh; overflow-y: auto; }
  .modal-box { padding: 20px 18px !important; max-height: 92vh; overflow-y: auto; }

  /* sticky CTA helper */
  .form-sticky-cta {
    position: sticky; bottom: 0; background: white; padding: 12px 16px;
    box-shadow: 0 -2px 12px rgba(0,0,0,0.08); margin: 0 -16px -16px; z-index: 10;
  }

  /* ── 3.1 Site banners (top + promo strip) ──────────────── */
  /* margin:0 + flex — захист від «фантомного» розриву на Samsung Internet */
  .site-banner {
    font-size: 0.78rem !important; line-height: 1.35 !important; padding: 8px 12px !important;
    margin: 0 !important; display: flex !important; align-items: center !important; gap: 8px !important;
    position: relative !important; top: auto !important; text-align: left !important;
  }
  .site-banner--top { padding: 8px 36px 8px 12px !important; }
  .site-banner--top button {
    position: absolute !important; top: 50% !important; right: 6px !important;
    transform: translateY(-50%) !important; font-size: 1rem !important; padding: 4px 6px !important; opacity: 0.7;
  }
  .site-banner--strip { gap: 8px !important; justify-content: center !important; }
  .site-banner--strip a { padding: 4px 12px !important; font-size: 0.76rem !important; flex-shrink: 0 !important; }
  .site-banner a[href] { font-size: inherit !important; }

  /* ── 3.2 Header ─────────────────────────────────────────── */
  .header__account-label { display: none; }

  /* ── 3.3 Hero ───────────────────────────────────────────── */
  .hero__title { font-size: 2.4rem !important; }
  .hero__subtitle { font-size: 1rem; }
  .hero::after { display: none; }
  .hero .btn { width: 100%; justify-content: center; }

  /* ── 3.4 Sections + typography ──────────────────────────── */
  .section-title { font-size: 1.9rem; }

  /* ── 3.5 Categories ─────────────────────────────────────── */
  .categories-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .cat-card { min-height: 130px; }
  .cat-card--wide { grid-column: span 2; }

  /* ── 3.6 Product cards ──────────────────────────────────── */
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .product-card__image { aspect-ratio: 4/3 !important; font-size: 3rem !important; }

  /* ── 3.7 Features ───────────────────────────────────────── */
  .features-grid { grid-template-columns: 1fr 1fr !important; gap: 12px; }
  .features-strip { padding: 36px 0; }

  /* ── 3.8 About ──────────────────────────────────────────── */
  .about-strip { padding: 36px 0; }
  .about-grid { grid-template-columns: 1fr !important; gap: 28px !important; }
  .about-visual { display: none; }

  /* ── 3.9 Catalog layout + filter accordion ──────────────── */
  .catalog-layout  { grid-template-columns: 1fr; }
  .catalog-sidebar { position: static !important; padding: 0; background: none; box-shadow: none; }

  .sidebar-toggle {
    display: flex; align-items: center; justify-content: space-between;
    width: 100%; padding: 12px 18px;
    background: var(--color-primary); border: none; border-radius: var(--border-radius);
    font-family: var(--font-body); font-size: 0.9rem; font-weight: 600;
    color: rgba(255,255,255,0.92); cursor: pointer; letter-spacing: 0.03em; transition: opacity 0.2s;
  }
  .sidebar-toggle:hover { opacity: 0.88; }
  .sidebar-toggle__arrow { transition: transform 0.3s cubic-bezier(0.4,0,0.2,1); color: rgba(255,255,255,0.65); }
  .sidebar-toggle--open .sidebar-toggle__arrow { transform: rotate(180deg); }

  .sidebar-body { max-height: 0; overflow: hidden; padding: 0; transition: max-height 0.44s cubic-bezier(0.4,0,0.2,1); }
  .sidebar-body--open { max-height: 2600px; padding: 10px 0 4px; }

  .catalog-sidebar .filter-group {
    border-radius: 10px; background: white; margin-bottom: 4px; overflow: hidden;
    box-shadow: 0 1px 4px rgba(0,0,0,0.07);
  }
  .catalog-sidebar .filter-group__title {
    display: flex; align-items: center; justify-content: space-between;
    margin: 0; padding: 14px 16px; font-size: 0.88rem; font-weight: 600;
    text-transform: none; letter-spacing: 0.01em; color: var(--color-text);
    cursor: pointer; user-select: none; gap: 8px; transition: color 0.18s;
  }
  .catalog-sidebar .filter-group:not(.filter-group--collapsed) > .filter-group__title {
    color: var(--color-accent); border-bottom: 1px solid rgba(0,0,0,0.06);
  }
  .catalog-sidebar .filter-group__arrow {
    width: 16px; height: 16px; flex-shrink: 0; display: inline-flex; color: var(--color-text-muted);
    transition: transform 0.28s cubic-bezier(0.4,0,0.2,1), color 0.18s;
  }
  .catalog-sidebar .filter-group:not(.filter-group--collapsed) > .filter-group__title .filter-group__arrow { color: var(--color-accent); }
  .catalog-sidebar .filter-group--collapsed > .filter-group__title .filter-group__arrow { transform: rotate(-90deg); }
  .catalog-sidebar .filter-group__body-wrap {
    overflow: hidden; max-height: 1200px; transition: max-height 0.32s cubic-bezier(0.4,0,0.2,1);
  }
  .catalog-sidebar .filter-group--collapsed > .filter-group__body-wrap { max-height: 0; }
  .catalog-sidebar .filter-group__body {
    display: flex !important; flex-direction: column; align-items: stretch; gap: 4px; padding: 12px 14px 14px;
  }
  #type-filter-btns .filter-btn { transition: background 0.18s, color 0.18s, border-color 0.18s; }

  .catalog-sidebar .filter-btn {
    display: flex !important; align-items: center; justify-content: flex-start;
    width: 100%; padding: 9px 14px; font-size: 0.85rem; line-height: 1.3;
    border-radius: 8px; border: 1.5px solid var(--color-border);
    background: transparent; color: var(--color-text); cursor: pointer; text-align: left;
    transition: background 0.15s, color 0.15s, border-color 0.15s, transform 0.1s; white-space: normal;
  }
  .catalog-sidebar .filter-btn:hover  { background: var(--color-bg); }
  .catalog-sidebar .filter-btn:active { transform: scale(0.96); }
  .catalog-sidebar .filter-btn.active {
    background: var(--color-accent) !important; color: white !important; border-color: var(--color-accent) !important;
  }
  .catalog-sidebar .filter-group[data-type-section] .filter-group__body {
    display: block !important; padding: 8px 12px 12px;
  }
  .type-filter-sub { margin-bottom: 6px; }
  .type-filter-sub:last-child { margin-bottom: 0; }
  .type-filter-sub + .type-filter-sub { border-top: 1px solid rgba(0,0,0,0.04); padding-top: 6px; }
  .type-filter-sub__label { padding: 4px 0 6px; font-size: 0.65rem; letter-spacing: 0.08em; margin-bottom: 3px; }
  .type-filter-sub__arrow { display: inline-flex; opacity: 0.7; }
  .type-filter-sub__btns { gap: 3px; }

  .price-range { display: flex; align-items: center; gap: 8px; width: 100%; margin-top: 4px; }
  .price-range input {
    flex: 1; min-width: 0; padding: 9px 12px; border: 1.5px solid var(--color-border); border-radius: 8px;
    font-family: var(--font-body); font-size: 0.85rem; background: var(--color-bg); color: var(--color-text);
    transition: border-color 0.18s; width: auto;
  }
  .price-range input:focus { outline: none; border-color: var(--color-accent); }
  .price-range input::placeholder { color: var(--color-text-muted); }
  .price-range > span:first-of-type { color: var(--color-text-muted); flex-shrink: 0; }
  .price-range > span:last-of-type { font-size: 0.8rem; color: var(--color-text-muted); flex-shrink: 0; font-weight: 600; }

  /* ── 3.10 Product detail ────────────────────────────────── */
  .product-detail-grid { grid-template-columns: 1fr !important; gap: 24px; }

  /* ── 3.11 Cart / Checkout ───────────────────────────────── */
  .checkout-grid { grid-template-columns: 1fr !important; gap: 20px !important; }
  .checkout-grid > * { min-width: 0; max-width: 100%; }
  .checkout-grid > *:last-child { position: static !important; top: auto !important; padding: 18px !important; }
  .cart-total { font-size: 1.5rem !important; }
  .cs-list { max-height: 180px; }
  .np-picker__list { max-height: 200px; }
  .cs-panel { max-width: calc(100vw - 32px); }
  #checkout-btn, .checkout-grid ~ .btn { width: 100%; justify-content: center; }

  /* ── 3.12 Account / Dashboard ───────────────────────────── */
  .dashboard-header { flex-direction: column; gap: 16px; }
  .auth-container { padding: 28px 20px; }
  .auth-tabs { flex-direction: column; }

  /* Tabs — горизонтальний свайп, не стискаються */
  [role="tablist"], .tabs-row, .dash-tabs-row {
    overflow-x: auto !important; flex-wrap: nowrap !important;
    scrollbar-width: none; -webkit-overflow-scrolling: touch;
  }
  [role="tablist"]::-webkit-scrollbar, .tabs-row::-webkit-scrollbar, .dash-tabs-row::-webkit-scrollbar { display: none; }
  .dash-tab, .account-tab, [role="tab"] {
    flex-shrink: 0 !important; padding: 12px 12px !important; font-size: 0.82rem !important; white-space: nowrap;
  }

  /* Картка замовлення — компактніше + word-break адрес */
  .order-card { padding: 14px 12px; }
  .order-card__header { flex-wrap: wrap; gap: 8px; }
  .order-details, .order-card, .order-details__row span,
  .dash-section, #ref-url-input, code, .specs-table td {
    word-wrap: break-word; overflow-wrap: anywhere; max-width: 100%;
  }
  .order-details__row { font-size: 0.82rem !important; gap: 6px !important; flex-wrap: wrap; }
  .order-details__row span:last-child { word-break: break-word; }

  /* Bonuses cards — менше padding на мобільному */
  .bonus-card { padding: 16px 14px !important; }
  .bonus-balance { font-size: 1.9rem !important; }
  .bonus-txn { gap: 8px !important; padding: 8px 10px !important; flex-wrap: wrap; }
  .bonus-txn__amt { min-width: auto !important; order: 1; }
  .bonus-txn__date { order: 2; margin-left: auto; }
  .bonus-txn__note { order: 3; flex-basis: 100% !important; font-size: 0.8rem; }
  .ref-stats-row { font-size: 0.82rem; gap: 10px !important; }
  .ref-actions input { flex-basis: 100% !important; }
  .ref-actions .btn { flex: 1; justify-content: center; }
  .gift-card-head .btn { width: 100%; justify-content: center; }

  /* ── 3.13 Footer ────────────────────────────────────────── */
  .footer { padding: 36px 0 0; }
  .footer__grid { grid-template-columns: 1fr !important; gap: 0; }
  .footer__grid > div { padding: 24px 0; border-bottom: 1px solid rgba(255,255,255,0.07); }
  .footer__grid > div:first-child { padding-top: 0; text-align: center; }
  .footer__grid > div:first-child > div:first-child { justify-content: center; }
  .footer__grid > div:first-child p { text-align: center; }
  .footer__links { flex-direction: row !important; flex-wrap: wrap; gap: 6px 16px; }
  .footer__links a { font-size: 0.9rem; }
  .footer__grid > div:last-child p { font-size: 0.9rem; }
  .footer__bottom { text-align: center; padding: 16px 0; font-size: 0.82rem; }

  /* ── 3.14 Notification toast ────────────────────────────── */
  .notification { top: auto !important; bottom: 76px; right: 12px; left: 12px; max-width: none; }
}

/* ═══════════════════════════════════════════
   4. SMALL MOBILE (≤480px)
   ═══════════════════════════════════════════ */
@media (max-width: 480px) {
  /* Hero */
  .hero__title { font-size: 2rem !important; line-height: 1.2; }
  .hero__badges { gap: 6px; }
  .hero__badge { font-size: 0.75rem; padding: 5px 10px; }

  /* Product cards */
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .product-card__image { aspect-ratio: 4/3 !important; font-size: 2.8rem !important; }

  /* Categories — 1 колонка */
  .categories-grid { grid-template-columns: 1fr; }
  .cat-card--wide { grid-column: span 1; }
  .cat-card { min-height: 110px; }

  /* Features */
  .features-grid { grid-template-columns: 1fr 1fr !important; gap: 10px; }
  .feature-item div:first-child { font-size: 1.8rem !important; }

  /* Titles */
  .section-title { font-size: 1.6rem; }

  /* Cart item */
  .cart-item { gap: 10px; padding: 12px; }
  .cart-item__thumb { width: 60px !important; height: 60px !important; font-size: 1.5rem !important; }
  .cart-item__title { font-size: 0.88rem; }
  .cart-item__qty button { width: 28px; height: 28px; font-size: 1rem; }

  /* Checkout: Ім'я + Прізвище в один стовпець */
  .checkout-name-grid { grid-template-columns: 1fr !important; gap: 0 !important; }
  .step-label h3 { font-size: 1.1rem; }
  .sidebar-toggle { font-size: 0.82rem; padding: 10px 12px; }

  /* Product page */
  .product-gallery__thumbs { gap: 6px; }
  .product-gallery__thumb { width: min(60px, 18vw) !important; height: min(60px, 18vw) !important; }
  .specs-table-wrap, .product-specs { overflow-x: auto; }
  .specs-table { min-width: 280px; }

  /* About / Contacts */
  .process-steps { flex-direction: column; }
  .contacts-grid { gap: 20px !important; }

  /* Footer links — вертикально */
  .footer__links { flex-direction: column !important; gap: 8px; }
  .footer__links a { font-size: 0.88rem; }

  /* Admin sidebar — горизонтальна стрічка */
  .admin-layout { grid-template-columns: 1fr; }
  .admin-sidebar { height: auto; position: static; flex-direction: row; flex-wrap: wrap; padding: 12px; gap: 6px; }
  .admin-logo { margin-bottom: 0; padding: 4px 8px; }
  .admin-nav { flex-direction: row; flex-wrap: wrap; gap: 4px; }
  .admin-nav-link { padding: 6px 10px; font-size: 0.82rem; }
}

/* ═══════════════════════════════════════════
   5. EXTRA-SMALL (≤420 / ≤380 / ≤360)
   ═══════════════════════════════════════════ */
@media (max-width: 420px) {
  .dash-tab, .account-tab, [role="tab"] { padding: 10px !important; font-size: 0.78rem !important; }
  /* На дуже вузькому ховаємо leading-emoji банера */
  .site-banner span:first-child { display: none; }
}

@media (max-width: 380px) {
  .container { padding: 0 12px !important; }
  .section { padding: 28px 0 !important; }
  h1 { font-size: 1.5rem !important; line-height: 1.25 !important; }
  h2 { font-size: 1.3rem !important; }
  h3 { font-size: 1.1rem !important; }
  .modal-box { padding: 16px 14px !important; }
  .hero__title { font-size: 1.75rem !important; }
  .bonus-balance { font-size: 1.7rem !important; }
}

@media (max-width: 360px) {
  .section-title { font-size: 1.45rem; }
  .cart-item__thumb { width: 50px !important; height: 50px !important; }
  .btn { padding: 10px 18px; font-size: 0.88rem; }
  .products-grid { grid-template-columns: 1fr; gap: 10px; }
  .price-range-wrap { flex-direction: column; align-items: stretch; }
}