/**
 * MACHPOWERTOOLS.COM - Master Glacier Glassmorphic Design System & Theme Styles
 * Native Vanilla CSS (Zero external node frameworks)
 * Optimized for LiteSpeed / Apache 2.4 Browser Caching & Gzip Compression
 */

/* Prevent horizontal viewport overflow on all devices */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
    font-family: var(--font, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif);
    background-color: var(--bg-light, #0b0f19);
    color: var(--text-main, #f8fafc);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 1. Amazon Influencer Storefront Ribbon */
.amazon-ribbon {
    background: linear-gradient(90deg, #0b192c 0%, #1e293b 50%, #0b192c 100%);
    color: #fff;
    padding: 7px 16px;
    font-size: 12px;
    border-bottom: 2px solid var(--accent, #f59e0b);
    width: 100%;
}
.amazon-ribbon-wrap {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}
.amazon-pill {
    background: var(--accent, #f59e0b);
    color: #0f172a;
    font-weight: 800;
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 10.5px;
    letter-spacing: 0.04em;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.amazon-ribbon a {
    color: #38bdf8;
    font-weight: 700;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: rgba(255,255,255,0.08);
    padding: 3px 9px;
    border-radius: 6px;
    transition: all 0.2s;
}
.amazon-ribbon a:hover {
    background: var(--accent, #f59e0b);
    color: #0f172a;
}

/* 2. Escrow Protection Trust Strip */
.escrow-strip {
    background: rgba(16, 185, 129, 0.08);
    border-bottom: 1px solid rgba(16, 185, 129, 0.2);
    color: #6ee7b7;
    font-size: 11.5px;
    font-weight: 600;
    padding: 6px 16px;
    width: 100%;
}
.escrow-strip-inner {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}
.escrow-strip a {
    color: #a7f3d0;
    font-weight: 700;
    text-decoration: underline;
}

/* 3. Main Navigation Bar (Glacier Glassmorphism & Cobalt Accent) */
.navbar {
    background: rgba(11, 15, 25, 0.94);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    color: #fff;
    padding: 8px 16px;
    border-bottom: 1px solid rgba(59, 130, 246, 0.22);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
    width: 100%;
}
.nav-wrap {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.brand {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
    transition: transform 0.2s ease;
}
.brand:hover {
    transform: scale(1.02);
}
.brand-logo-img {
    height: 38px;
    width: auto;
    max-height: 42px;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.5));
}

/* Search Bar in Header */
.nav-search {
    flex: 1;
    max-width: 440px;
    position: relative;
}
.nav-search input {
    width: 100%;
    padding: 9px 14px 9px 36px;
    border-radius: 9999px;
    border: 1px solid #334155;
    background: rgba(15, 23, 42, 0.6);
    color: #fff;
    font-size: 13px;
    outline: none;
    transition: all 0.2s;
}
.nav-search input:focus {
    border-color: var(--secondary, #0284c7);
    background: #0f172a;
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
}
.nav-search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
    pointer-events: none;
}

/* Desktop Nav Menu Links */
.nav-links {
    display: flex;
    align-items: center;
    gap: 12px;
}
.nav-links a {
    color: #cbd5e1;
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    transition: color 0.15s;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}
.nav-links a:hover, .nav-links a.active {
    color: #fff;
}
.nav-link-market {
    color: #fef08a !important;
    font-weight: 700 !important;
    background: rgba(234, 179, 8, 0.15);
    padding: 4px 10px;
    border-radius: 6px;
    border: 1px solid rgba(234, 179, 8, 0.3);
}
.nav-link-market:hover {
    background: var(--accent, #f59e0b);
    color: #0f172a !important;
}
.nav-link-partners {
    color: #38bdf8 !important;
    font-weight: 700 !important;
    background: rgba(56, 189, 248, 0.12);
    padding: 4px 10px;
    border-radius: 6px;
    border: 1px solid rgba(56, 189, 248, 0.3);
}
.nav-link-partners:hover {
    background: #38bdf8;
    color: #0f172a !important;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}
.btn-mode-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 9999px;
    font-size: 11.5px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.2s;
    border: 1px solid rgba(125, 211, 252, 0.25);
    background: rgba(17, 24, 39, 0.75);
    backdrop-filter: blur(8px);
}
.btn-mode-toggle.mode-b2b {
    color: #7dd3fc;
    border-color: rgba(125, 211, 252, 0.5);
    box-shadow: 0 0 12px rgba(125, 211, 252, 0.15);
}
.btn-mode-toggle.mode-retail {
    color: #f59e0b;
    border-color: rgba(245, 158, 11, 0.5);
}
.mode-pill-indicator {
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.05em;
}
.mode-b2b .mode-pill-indicator {
    background: rgba(125, 211, 252, 0.2);
    color: #7dd3fc;
}
.mode-retail .mode-pill-indicator {
    background: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
}
.mode-label {
    font-size: 11px;
    color: #cbd5e1;
}
@media (max-width: 640px) {
    .mode-label { display: none; }
}
.btn-header-cart {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.15s;
}
.btn-header-cart:hover {
    background: rgba(255, 255, 255, 0.2);
}
.cart-badge-count {
    background: #ef4444;
    color: #fff;
    font-size: 11px;
    font-weight: 800;
    padding: 1px 6px;
    border-radius: 9999px;
    min-width: 18px;
    text-align: center;
}
.btn-sell-header {
    background: linear-gradient(135deg, var(--accent, #f59e0b), var(--accent-dark, #d97706));
    color: #0f172a !important;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 12.5px;
    font-weight: 800;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
    white-space: nowrap;
}

/* Mobile Trigger Button */
.btn-mobile-menu {
    display: none;
    background: none;
    border: none;
    color: #fff;
    padding: 6px;
    cursor: pointer;
    border-radius: 6px;
}

/* 4. Secondary Sub-Header: Vertical Catalog Dropdown & Quick Channels */
.sub-nav {
    background: #0f172a;
    border-bottom: 1px solid #1e293b;
    color: #94a3b8;
    font-size: 13px;
    position: relative;
    z-index: 990;
}
.sub-nav-wrap {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    height: 44px;
}
.sub-nav-left {
    display: flex;
    align-items: center;
    gap: 16px;
    height: 100%;
}

/* Vertical Catalog Trigger Button & Dropdown Mega Menu */
.catalog-menu-container {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}
.btn-catalog-trigger {
    background: var(--primary, #7dd3fc);
    color: #0b0f19;
    border: none;
    padding: 0 16px;
    height: 100%;
    font-size: 13px;
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: background 0.15s;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.btn-catalog-trigger:hover {
    background: var(--primary-hover, #38bdf8);
}

.catalog-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 780px;
    max-width: 90vw;
    background: rgba(15, 23, 42, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(125, 211, 252, 0.2);
    border-radius: 0 0 12px 12px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
    z-index: 1100;
    overflow: hidden;
}
.catalog-menu-container:hover .catalog-dropdown,
.catalog-dropdown.is-open {
    display: grid;
    grid-template-columns: 260px 1fr;
}

/* Left Side: Category Departments */
.cat-dept-list {
    background: rgba(11, 15, 25, 0.9);
    border-right: 1px solid rgba(125, 211, 252, 0.14);
    padding: 12px 0;
    list-style: none;
}
.cat-dept-item a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    color: #cbd5e1;
    text-decoration: none;
    font-size: 13px;
    font-weight: 700;
    transition: all 0.15s;
}
.cat-dept-item a:hover,
.cat-dept-item.active a {
    background: rgba(125, 211, 252, 0.12);
    color: var(--primary, #7dd3fc);
    border-left: 3px solid var(--primary, #7dd3fc);
    padding-left: 13px;
}
.cat-count-badge {
    background: rgba(125, 211, 252, 0.15);
    color: #7dd3fc;
    font-size: 10.5px;
    padding: 2px 6px;
    border-radius: 9999px;
    font-weight: 700;
}

/* Right Side: Nested Subcategories & Brands */
.cat-sub-panel {
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-height: 420px;
    overflow-y: auto;
}
.cat-sub-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}
.cat-sub-card {
    background: rgba(17, 24, 39, 0.75);
    border: 1px solid rgba(125, 211, 252, 0.14);
    border-radius: 8px;
    padding: 10px 12px;
    text-decoration: none;
    color: #f8fafc;
    transition: all 0.15s;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.cat-sub-card:hover {
    border-color: var(--primary, #7dd3fc);
    background: rgba(125, 211, 252, 0.14);
    color: var(--primary, #7dd3fc);
    transform: translateX(3px);
}
.cat-sub-title { font-size: 12.5px; font-weight: 700; }
.cat-sub-count { font-size: 11px; color: var(--text-muted, #94a3b8); }

.cat-brands-strip {
    padding-top: 12px;
    border-top: 1px solid rgba(125, 211, 252, 0.14);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
}
.brand-pill-sm {
    background: rgba(17, 24, 39, 0.75);
    border: 1px solid rgba(125, 211, 252, 0.18);
    color: #94a3b8;
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.15s;
}
.brand-pill-sm:hover {
    background: var(--primary, #7dd3fc);
    color: #0b0f19;
    border-color: var(--primary, #7dd3fc);
}

/* Quick Sub-Nav Channels */
.sub-nav-links {
    display: flex;
    align-items: center;
    gap: 14px;
}
.sub-nav-links a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 12.5px;
    font-weight: 600;
    transition: color 0.15s;
}
.sub-nav-links a:hover { color: #fff; }

/* 5. Mobile Off-Canvas Navigation Drawer */
.mobile-drawer-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(4px);
    z-index: 3000;
}
.mobile-drawer {
    position: fixed;
    top: 0;
    left: -320px;
    width: 300px;
    max-width: 85vw;
    height: 100%;
    background: #0f172a;
    color: #fff;
    box-shadow: 4px 0 25px rgba(0,0,0,0.3);
    z-index: 3001;
    transition: left 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}
.mobile-drawer.open { left: 0; }
.mobile-drawer-header {
    padding: 16px;
    background: #09131f;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #1e293b;
}
.mobile-drawer-body {
    padding: 16px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.mobile-nav-group-title {
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #64748b;
    margin-bottom: 6px;
}
.mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: 8px;
    color: #cbd5e1;
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 600;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.05);
    transition: all 0.15s;
}
.mobile-nav-link:hover, .mobile-nav-link.active {
    background: rgba(255,255,255,0.08);
    color: #fff;
    border-color: var(--secondary, #0284c7);
}

/* Accordion for Nested Categories in Mobile */
.mobile-accordion-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.05);
    padding: 10px 12px;
    border-radius: 8px;
    color: #fff;
    font-size: 13.5px;
    font-weight: 700;
    cursor: pointer;
    text-align: left;
}
.mobile-accordion-panel {
    display: none;
    padding: 6px 0 6px 12px;
    flex-direction: column;
    gap: 4px;
}
.mobile-accordion-panel.open { display: flex; }
.mobile-sub-link {
    padding: 6px 10px;
    color: #94a3b8;
    text-decoration: none;
    font-size: 12.5px;
    display: flex;
    justify-content: space-between;
    border-radius: 6px;
}
.mobile-sub-link:hover { color: #38bdf8; background: rgba(56, 189, 248, 0.08); }

/* 6. Slide-Over Cart & RFQ Drawer */
.cart-drawer-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    z-index: 2000;
}
.cart-drawer {
    position: fixed;
    top: 0;
    right: -420px;
    width: 100%;
    max-width: 400px;
    height: 100%;
    background: rgba(11, 15, 25, 0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-left: 1px solid rgba(125, 211, 252, 0.2);
    color: #f8fafc;
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.6);
    z-index: 2001;
    transition: right 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}
.cart-drawer.open { right: 0; }
.drawer-header {
    padding: 16px 20px;
    background: rgba(17, 24, 39, 0.9);
    border-bottom: 1px solid rgba(125, 211, 252, 0.16);
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.drawer-title { font-size: 16px; font-weight: 800; display: flex; align-items: center; gap: 8px; color: #f8fafc; }
.drawer-close { background: none; border: none; color: #cbd5e1; font-size: 22px; cursor: pointer; }
.drawer-body { flex: 1; overflow-y: auto; padding: 16px; }
.drawer-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(125, 211, 252, 0.16);
    background: rgba(17, 24, 39, 0.85);
}

/* 7. Global Button Utility */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 18px;
    border-radius: 8px;
    font-size: 13.5px;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    border: none;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.btn:active { transform: scale(0.98); }
.btn-primary { 
    background: linear-gradient(135deg, var(--primary, #7dd3fc), var(--secondary, #0284c7)); 
    color: #0b0f19; 
    font-weight: 800;
    box-shadow: 0 4px 14px rgba(125, 211, 252, 0.25);
}
.btn-primary:hover { 
    background: linear-gradient(135deg, var(--primary-hover, #38bdf8), var(--secondary, #0284c7));
    box-shadow: 0 6px 20px rgba(125, 211, 252, 0.4);
    transform: translateY(-1px);
}
.btn-accent { 
    background: linear-gradient(135deg, var(--accent, #f59e0b), var(--accent-dark, #d97706)); 
    color: #0f172a; 
    font-weight: 800;
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.25);
}
.btn-outline { 
    background: rgba(17, 24, 39, 0.75); 
    border: 1px solid rgba(125, 211, 252, 0.25); 
    color: #f8fafc; 
    backdrop-filter: blur(8px);
}
.btn-outline:hover { 
    background: rgba(125, 211, 252, 0.14); 
    border-color: var(--primary, #7dd3fc); 
    color: var(--primary, #7dd3fc);
}
.btn-wa { background: #25D366; color: #fff; }
.btn-wa:hover { opacity: 0.95; }
.btn-amazon { background: #0f172a; color: #fbbf24; border: 1px solid #334155; }
.btn-amazon:hover { background: #1e293b; color: #fde047; }
.btn-escrow { background: linear-gradient(135deg, #10b981, #059669); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 12px; }

.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: 6px;
    letter-spacing: 0.03em;
}
.badge-new { background: rgba(125, 211, 252, 0.15); color: #7dd3fc; border: 1px solid rgba(125, 211, 252, 0.3); }
.badge-used { background: rgba(245, 158, 11, 0.15); color: #f59e0b; border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-refurb { background: rgba(16, 185, 129, 0.15); color: #10b981; border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-escrow { background: rgba(168, 85, 247, 0.15); color: #c084fc; border: 1px solid rgba(168, 85, 247, 0.3); }

/* 8. Floating Action Button (FAB) Speed Dial */
.fab-container {
    position: fixed;
    bottom: 74px;
    right: 18px;
    z-index: 1400;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
}
.fab-trigger {
    width: 52px;
    height: 52px;
    border-radius: 9999px;
    background: linear-gradient(135deg, var(--accent, #f59e0b), var(--accent-dark, #d97706));
    color: #0f172a;
    border: none;
    box-shadow: 0 4px 18px rgba(245, 158, 11, 0.4);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}
.fab-trigger:active { transform: scale(0.92); }
.fab-trigger .fab-icon-close { display: none; font-size: 20px; font-weight: 800; color: #0f172a; }
.fab-container.active .fab-trigger { transform: rotate(90deg); background: #334155; }
.fab-container.active .fab-trigger .fab-icon-main { display: none; }
.fab-container.active .fab-trigger .fab-icon-close { display: block; color: #fff; }

.fab-menu {
    display: none;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
    animation: fabSlideUp 0.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.fab-container.active .fab-menu { display: flex; }
@keyframes fabSlideUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}
.fab-item {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}
.fab-label {
    background: rgba(15, 23, 42, 0.9);
    color: #fff;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11.5px;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    white-space: nowrap;
}
.fab-icon-box {
    width: 38px;
    height: 38px;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.2);
    transition: transform 0.15s;
}
.fab-item:hover .fab-icon-box { transform: scale(1.1); }

/* 9. Proactive Live Hint / Toast Notification */
.social-toast {
    position: fixed;
    bottom: 74px;
    left: 18px;
    background: rgba(17, 24, 39, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(125, 211, 252, 0.25);
    border-left: 4px solid var(--primary, #7dd3fc);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.6);
    border-radius: 12px;
    padding: 12px 14px;
    max-width: 340px;
    z-index: 1390;
    display: none;
    animation: toastIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
@keyframes toastIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}
.social-toast-avatar {
    width: 36px;
    height: 36px;
    background: rgba(125, 211, 252, 0.12);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
    border: 1px solid rgba(125, 211, 252, 0.25);
}
.social-toast-title { font-size: 12.5px; font-weight: 800; color: #f8fafc; }
.social-toast-msg { font-size: 12px; color: #cbd5e1; line-height: 1.4; margin: 2px 0; }
.social-toast-time { font-size: 10.5px; color: #34d399; font-weight: 700; }
.social-toast-close {
    position: absolute;
    top: 6px;
    right: 8px;
    background: none;
    border: none;
    color: #94a3b8;
    font-size: 13px;
    cursor: pointer;
}

/* 10. Mobile Sticky Bottom Navigation */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 58px;
    background: rgba(11, 15, 25, 0.94);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid rgba(125, 211, 252, 0.18);
    z-index: 1500;
    justify-content: space-around;
    align-items: center;
    padding: 0 4px;
    width: 100%;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
}
.mb-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    text-decoration: none;
    font-size: 10px;
    font-weight: 700;
    flex: 1;
    height: 100%;
    transition: all 0.15s;
}
.mb-nav-item.active {
    color: var(--primary, #7dd3fc);
    text-shadow: 0 0 12px rgba(125, 211, 252, 0.4);
}
.mb-nav-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2px;
}

/* 11. Common PDP & Interactive Cards Styles */
.glacier-card {
    background: var(--panel-surface, rgba(17, 24, 39, 0.75));
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--panel-border, rgba(125, 211, 252, 0.14));
    border-radius: var(--radius, 12px);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1),
                border-color 0.2s ease,
                box-shadow 0.2s ease;
}
.glacier-card:hover {
    transform: translateY(-2px);
    border-color: var(--panel-border-hover, rgba(125, 211, 252, 0.35));
    box-shadow: 0 12px 40px -8px rgba(125, 211, 252, 0.18);
}

.pdp-trust-pod {
    background: rgba(17, 24, 39, 0.7);
    border: 1px solid rgba(125, 211, 252, 0.14);
    padding: 10px 12px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.variant-card {
    background: rgba(17, 24, 39, 0.85);
    border: 1px solid rgba(125, 211, 252, 0.18);
    border-radius: 8px;
    padding: 10px 12px;
    cursor: pointer;
    transition: all 0.15s;
    display: block;
}
.variant-card:hover {
    border-color: var(--primary, #7dd3fc);
    background: rgba(125, 211, 252, 0.08);
}
.variant-card.selected {
    border-color: var(--primary, #7dd3fc);
    background: rgba(125, 211, 252, 0.12);
    box-shadow: 0 0 12px rgba(125, 211, 252, 0.2);
}
.addon-row {
    background: rgba(17, 24, 39, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    padding: 10px 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: border-color 0.15s;
}
.addon-row:hover {
    border-color: rgba(125, 211, 252, 0.3);
}
.pdp-nav-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 700;
    color: #7dd3fc;
    background: rgba(125, 211, 252, 0.1);
    border: 1px solid rgba(125, 211, 252, 0.25);
    padding: 4px 10px;
    border-radius: 6px;
    text-decoration: none;
    transition: all 0.15s;
}
.pdp-nav-pill:hover {
    background: var(--primary, #7dd3fc);
    color: #0b0f19;
}

/* 12. Responsive Breakpoints */
@media (max-width: 960px) {
    .nav-search { display: none; }
    .nav-links { display: none; }
    .btn-sell-header span { display: none; }
    .btn-sell-header { padding: 8px 10px; }
    .btn-mobile-menu { display: inline-flex; }
    .sub-nav { display: none; }
    .amazon-ribbon { font-size: 11px; padding: 6px 12px; }
    .amazon-ribbon-wrap span:last-child { display: none; }
    .escrow-strip { font-size: 11px; padding: 5px 12px; }
    .escrow-strip-inner a { font-size: 11px; }
}

@media (max-width: 900px) {
    .mobile-bottom-nav { display: flex; }
    footer { padding-bottom: 110px !important; }
    body { padding-bottom: 58px; }
    .fab-container { bottom: 70px; right: 14px; }
    .social-toast { bottom: 70px; left: 14px; max-width: calc(100vw - 28px); }
    .product-detail-grid { grid-template-columns: 1fr !important; }
}

@media (max-width: 480px) {
    .brand { font-size: 17px; }
    .brand svg { width: 18px; height: 18px; }
    .btn-header-cart span:first-of-type { display: none; }
    .amazon-ribbon { display: none; }
}