/* Shared responsive layout. Loaded after page styles and typography. */
.category-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    color: var(--color-primary);
    cursor: pointer;
    list-style: none;
}
.category-summary::-webkit-details-marker { display: none; }
.category-summary > span { min-width: 0; }
.category-summary-title { display: block; font-size: var(--text-subheading); font-weight: 600; }
.category-selection { display: none; }
.category-chevron { flex: 0 0 auto; transition: transform .2s; }
.category-picker[open] > .category-summary { padding-bottom: 12px; margin-bottom: 8px; border-bottom: 2px solid var(--color-accent); }
.category-picker[open] > .category-summary .category-chevron { transform: rotate(180deg); }
.category-summary:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 6px; border-radius: 2px; }
.catalogue-view-switch { display: block; margin-top: 8px; text-decoration: underline; }

.product-page .product-header {
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    grid-template-areas: "gallery heading" "gallery info" "meta info";
    gap: 16px 32px;
    align-items: start;
}
.product-page .product-heading { grid-area: heading; min-width: 0; }
.product-page .product-gallery { grid-area: gallery; width: 100%; min-width: 0; }
.product-page .product-info { grid-area: info; width: 100%; min-width: 0; }
.product-page .product-meta { grid-area: meta; margin-top: 0; min-width: 0; }
.product-page .product-title { overflow-wrap: anywhere; }
.product-page .product-subtitle { margin-bottom: 0; }
.product-page .product-price-block { margin-top: 16px; }

@media (min-width: 769px) and (max-width: 1023px) {
    .product-page .product-card { padding: 20px; }
    .product-page .product-header {
        grid-template-columns: minmax(0, 1fr);
        grid-template-areas: "heading" "gallery" "info" "meta";
    }
    .product-page .bid-form, .product-page .auto-bid-form { flex-wrap: wrap; }
    .product-page .auto-bid-form input { min-width: 0; max-width: 100%; }
}

@media (max-width: 768px) {
    header .header-top {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        gap: 8px 12px;
        padding: 10px 0;
    }
    header .logo {
        font-size: clamp(15px, 4.4vw, 19px);
        line-height: 1.3;
        letter-spacing: .3px;
        min-width: 0;
    }
    header .user-nav { grid-column: 2; grid-row: 1; gap: 6px; }
    header .user-nav a { min-height: 40px; padding: 4px; }
    header .user-nav .user-nav-label { display: none; }
    header .search-bar { grid-column: 1 / -1; grid-row: 2; width: 100%; min-width: 0; }
    header .search-input-wrapper { min-width: 0; }
    header .search-bar input { width: 100%; min-width: 0; padding: 10px 36px 10px 12px; }
    header .search-bar button[type="submit"] { min-width: 46px; min-height: 44px; padding: 10px 14px; }
    header .search-bar .clear-btn { width: 28px; height: 32px; right: 4px; }
    header .main-nav {
        flex-wrap: nowrap;
        justify-content: flex-start;
        gap: 10px;
        overflow-x: auto;
        padding: 6px 0;
        scrollbar-width: none;
    }
    header .main-nav::-webkit-scrollbar { display: none; }
    header .main-nav a { flex: 0 0 auto; white-space: nowrap; font-size: 12px; letter-spacing: 0; padding: 5px 0; }

    .catalogue-page .hero { padding: 20px 0; }
    .catalogue-page .hero-inner { gap: 16px; align-items: stretch; }
    .catalogue-page .hero-left { flex: none; width: 100%; max-width: none; }
    .catalogue-page .hero-title { font-size: 26px; line-height: 1.2; margin-bottom: 8px; }
    .catalogue-page .hero-badge { font-size: 11px; letter-spacing: .2px; padding: 4px 10px; margin-bottom: 10px; }
    .catalogue-page .hero-subtitle { font-size: 14px; line-height: 1.5; margin-bottom: 14px; }
    .catalogue-page .hero-actions { gap: 8px; }
    .catalogue-page .hero-btn { padding: 11px 16px; min-height: 44px; white-space: normal; text-align: center; }
    .catalogue-page .hero-btn-secondary, .catalogue-page .hero-center, .catalogue-page .hero-stats { display: none; }
    .catalogue-page .hero-right { order: initial; }
    .catalogue-page .hero-countdown-box { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px 10px; padding: 10px 12px; border-radius: 8px; }
    .catalogue-page .hero-countdown-label { grid-column: 1 / -1; margin-bottom: 0; font-size: 10px; letter-spacing: .4px; text-align: left; }
    .catalogue-page .hero-countdown { gap: 3px; justify-content: flex-start; }
    .catalogue-page .countdown-num { font-size: 20px; min-width: 24px; }
    .catalogue-page .countdown-sep { font-size: 18px; }
    .catalogue-page .countdown-lbl { font-size: 9px; }
    .catalogue-page .hero-countdown-end { align-self: center; max-width: 100px; margin-top: 0; font-size: 11px; text-align: right; }

    .catalogue-page .main-content, .product-page .main-content { flex-direction: column; gap: 16px; padding: 16px 0 24px; }
    .catalogue-page .sidebar, .product-page .sidebar { width: 100%; min-width: 0; }
    .category-picker { margin-bottom: 0; padding: 12px 16px; }
    .category-summary { min-height: 36px; }
    .category-summary-title { font-size: 16px; }
    .category-selection { display: block; font-size: 12px; color: var(--color-text-light); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .category-picker .sidebar-items { max-height: min(60vh, 480px); overflow-y: auto; overscroll-behavior: contain; }
    .category-picker .sidebar-items a { min-height: 44px; }
    .category-picker .sub-popup { position: static; box-shadow: none; border: 0; border-left: 2px solid var(--color-border); margin: 0 0 8px 8px; border-radius: 0; }
    .catalogue-page .sidebar-banner { display: none; }
    .catalogue-page .auction-header { gap: 12px; margin-bottom: 16px; padding-bottom: 16px; }
    .catalogue-page .auction-title { font-size: 24px; overflow-wrap: anywhere; }
    .catalogue-page .auction-subtitle { font-size: 13px; }
    .catalogue-page .catalogue-view-controls { display: flex; align-items: center; justify-content: space-between; gap: 8px; width: 100%; font-size: 12px; }
    .catalogue-page .catalogue-view-controls .status-open { font-size: 12px; }
    .catalogue-page .catalogue-view-switch { margin-top: 0; }
    .catalogue-page .auction-items { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
    .catalogue-page .item-image-container { height: clamp(140px, 42vw, 200px); }
    .catalogue-page .item-info { padding: 12px; }
    .catalogue-page .item-info h3 { font-size: 15px; }
    .catalogue-page .item-type { font-size: 11px; letter-spacing: .2px; margin-bottom: 12px; }
    .catalogue-page .price-row { gap: 8px; }
    .catalogue-page .bid-btn { min-height: 44px; padding: 10px 12px; }
    #auction-content { scroll-margin-top: 16px; }

    .product-page .product-card { padding: 16px; margin-bottom: 20px; }
    .product-page .product-header {
        grid-template-columns: minmax(0, 1fr);
        grid-template-areas: "heading" "gallery" "info" "meta";
        gap: 16px;
        padding-bottom: 20px;
        margin-bottom: 20px;
    }
    .product-page .product-title-row, .product-page .product-heading-actions { flex-wrap: wrap; }
    .product-page .product-title { font-size: 24px; line-height: 1.25; margin-bottom: 8px; }
    .product-page .product-subtitle { font-size: 12px; }
    .product-page .image-wrapper { height: clamp(210px, 62vw, 270px); }
    .product-page .thumbnails { flex-wrap: nowrap; overflow-x: auto; justify-content: flex-start; gap: 8px; margin-top: 10px; padding: 2px; }
    .product-page .thumb { flex: 0 0 52px; width: 52px; height: 52px; }
    .product-page .product-info { display: flex; flex-direction: column; }
    .product-page .product-price-block { order: -1; margin: 0 0 16px; padding: 16px; }
    .product-page .product-price { font-size: 30px; }
    .product-page .countdown { font-size: 14px; }
    .product-page .product-meta { padding: 12px; }
    .product-page .meta-label { flex: 0 0 40%; width: auto; padding-right: 10px; }
    .product-page .meta-value { min-width: 0; overflow-wrap: anywhere; }
    .product-page .bid-form, .product-page .auto-bid-form { flex-wrap: wrap; }
    .product-page .bid-form input, .product-page .auto-bid-form input { min-width: 0; flex: 1 1 120px; }
    .product-page .bid-form .primary-button, .product-page .auto-bid-form .primary-button { min-height: 46px; flex: 1 1 150px; }
    .product-page .auto-bid-section { padding: 12px; }
    .product-page .auto-bid-form { flex-direction: column; }
    .product-page .auto-bid-form input { width: 100%; }
    .product-page .auto-bid-form .primary-button { width: 100%; flex: none; }
    .product-page .tabs-header { display: flex; overflow-x: auto; }
    .product-page .tab-button { flex: 0 0 auto; min-height: 44px; padding: 10px 14px; }
    .product-page .tab-content { overflow-x: auto; }
    .product-page .primary-button { overflow-wrap: anywhere; }
}

@media (prefers-reduced-motion: reduce) {
    .category-chevron { transition: none; }
    .catalogue-page .hero-badge-dot { animation: none; }
}

/* Participant instructions and shared public contacts. */
.contact-details { display: flex; flex-direction: column; gap: 10px; font-style: normal; overflow-wrap: anywhere; }
.contact-details a { color: inherit; text-decoration: underline; text-underline-offset: 3px; }
footer .contact-details { color: var(--color-text-light); font-size: var(--text-caption); }
.help-content { padding-top: 32px; padding-bottom: 40px; max-width: 1040px; }
.help-content p { margin-top: 12px; line-height: 1.7; }
.help-content h2 { font-size: var(--text-subheading); }
.help-content a:not(.primary-button) { text-decoration: underline; text-underline-offset: 3px; }
.help-intro { padding: 32px; border-radius: 12px; background: var(--color-primary); color: #e0e8f0; margin-bottom: 24px; }
.help-intro h1 { color: white; max-width: 24ch; }
.help-intro p { max-width: 64ch; }
.help-intro .help-eyebrow { margin: 0 0 8px; color: #e0c272; font-size: 13px; font-weight: 600; }
.help-intro .primary-button { margin-top: 20px; background: #d4a84b; color: #0f2840; }
.participation-steps { list-style: none; counter-reset: steps; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-bottom: 28px; }
.participation-steps > li, .content-panel { padding: 24px; background: white; border: 1px solid var(--color-border); border-radius: 10px; }
.participation-steps > li { position: relative; counter-increment: steps; }
.participation-steps > li::before { content: counter(steps); position: absolute; top: 20px; left: 20px; display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: #efeae4; color: var(--color-primary); font-weight: 600; }
.participation-steps > li h2 { min-height: 32px; padding-left: 42px; }
.participation-steps > li:last-child { grid-column: 1 / -1; }
.help-faq { margin-bottom: 24px; }
.help-faq h2 { margin-bottom: 12px; }
.help-faq details { padding: 12px 16px; border-bottom: 1px solid var(--color-border); background: white; }
.help-faq summary { padding: 8px 0; min-height: 44px; cursor: pointer; font-weight: 600; color: var(--color-primary); }
.help-faq p { margin: 0 0 12px; }
.help-contact { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 24px; border: 1px solid var(--color-border); border-radius: 10px; background: var(--color-bg-alt); }
.help-contact .contact-details { margin-top: 16px; }
.help-contact .primary-button { flex-shrink: 0; }
.public-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-bottom: 24px; }
.public-grid .content-panel a { display: inline-block; margin-top: 16px; }
.information-page .help-content > .content-panel { margin-bottom: 24px; }
.help-content [id] { scroll-margin-top: 20px; }
@media (max-width: 768px) {
    .help-content { padding-top: 20px; }
    .help-intro { padding: 24px 20px; }
    .help-intro h1 { font-size: 26px; }
    .participation-steps, .public-grid { grid-template-columns: minmax(0, 1fr); }
    .participation-steps > li, .content-panel { padding: 20px; }
    .help-contact { align-items: flex-start; flex-direction: column; padding: 20px; }
    .help-contact .primary-button { width: 100%; text-align: center; }
}
/* Public instructions and the manual payment contact in the account. */
.winnings-note { margin: 0 0 20px; line-height: 1.6; }
.winnings-contact { display: inline-flex; text-decoration: none; padding: 10px 18px; white-space: normal; }
.account-logout { margin-top: 25px; border-top: 1px solid #e2e0dc; padding-top: 20px; }
.verification-form { display: flex; flex-direction: column; gap: 12px; text-align: left; margin-bottom: 24px; }
.verification-form input[type="email"] { width: 100%; padding: 12px; border: 1px solid var(--color-border); border-radius: 6px; font: inherit; }
.verification-form .verify-btn { border: 0; font: inherit; font-weight: 600; cursor: pointer; }
@media (min-width: 769px) and (max-width: 1023px) {
    .account-page .main-content { flex-direction: column; }
    .account-page .sidebar { width: 100%; position: static; padding: 16px; }
    .account-page .sidebar-menu { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 4px; }
    .account-page .sidebar-menu a { padding: 10px; gap: 8px; }
    .account-page .account-logout { padding: 0; margin: 0; border: 0; }
}
@media (max-width: 768px) {
    .verify-wrapper { padding: 24px 16px; }
    .verify-container { padding: 24px 20px; }
    .rules-page .content-card, .legal-page .content-card { padding: 24px 20px; }
    .account-page .main-content { padding-top: 20px; gap: 24px; }
    .account-page .sidebar { padding: 12px; }
    .account-page .sidebar-menu { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px; }
    .account-page .sidebar-menu li { min-width: 0; margin: 0; }
    .account-page .sidebar-menu a { min-height: 44px; padding: 8px; gap: 8px; font-size: 12px; }
    .account-page .account-logout { padding: 0; border: 0; }
    .account-page .profile-card { padding: 20px; }
    .account-page .page-title { font-size: 26px; margin-bottom: 20px; padding-bottom: 12px; }
    .account-page .winnings-table, .account-page .winnings-table tbody { display: block; width: 100%; }
    .account-page .winnings-table thead { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); }
    .account-page .winnings-table tbody tr { display: grid; grid-template-columns: 55px minmax(0, 1fr); gap: 12px; padding: 16px 0; border-bottom: 1px solid var(--color-border); }
    .account-page .winnings-table tbody td { display: block; padding: 0; border: 0; min-width: 0; overflow-wrap: anywhere; }
    .account-page .winnings-table tbody td:nth-child(n+3) { grid-column: 1 / -1; }
    .account-page .winnings-price::before { content: 'Сумма выигрыша: '; font-size: 13px; font-weight: 400; }
    .account-page .winnings-contact { justify-content: center; width: 100%; min-height: 44px; }
}