:root {
    --gold: #F5C842;
    --gold-dark: #C9A200;
    --black: #0A0A0A;
    --dark: #111111;
    --dark2: #1A1A1A;
    --dark3: #222222;
    --gray: #888888;
    --light: #F2F2F2;
    --white: #FFFFFF;
    --accent: #FFE566;
  }

  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }

  body {
    background: var(--black);
    color: var(--white);
    font-family: 'DM Sans', sans-serif;
    overflow-x: hidden;
  }

  /* TOPBAR */
  .topbar {
    background: var(--gold);
    color: var(--black);
    text-align: center;
    padding: 8px 20px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
  }

  /* HEADER */
  header {
    background: var(--dark);
    border-bottom: 1px solid #2a2a2a;
    position: sticky;
    top: 0;
    z-index: 1000;
  }

  .header-inner {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
  }

  .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
  }

  .logo-icon {
    width: 38px; height: 38px;
    background: var(--gold);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
  }

  .logo-icon svg { width: 22px; height: 22px; }

  .logo-text {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 28px;
    color: var(--white);
    letter-spacing: 3px;
  }

  .logo-text span { color: var(--gold); }

  nav { display: flex; gap: 32px; }

  nav a {
    color: var(--gray);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: color 0.2s;
  }

  nav a:hover { color: var(--gold); }

  .header-actions { display: flex; align-items: center; gap: 16px; }

  .btn-header {
    background: var(--gold);
    color: var(--black);
    border: none;
    padding: 10px 22px;
    font-family: 'DM Sans', sans-serif;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    text-decoration: none;
    display: inline-block;
  }

  .btn-header:hover { background: var(--accent); transform: translateY(-1px); }

  .search-btn {
    background: none;
    border: 1px solid #333;
    color: var(--gray);
    width: 38px; height: 38px;
    border-radius: 4px;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.2s;
  }

  .search-btn:hover { border-color: var(--gold); color: var(--gold); }

  /* BREADCRUMB BAR */
  .breadcrumb-bar {
    border-bottom: 1px solid #1e1e1e;
    background: var(--dark);
  }

  .breadcrumb-bar-inner {
    max-width: 1140px;
    margin: 0 auto;
    padding: 12px 30px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--gray);
  }

  .breadcrumb-bar a {
    color: var(--gray);
    text-decoration: none;
    transition: color 0.2s;
  }

  .breadcrumb-bar a:hover { color: var(--gold); }
  .breadcrumb-bar svg { opacity: 0.35; flex-shrink: 0; }
  .breadcrumb-bar span:last-child { color: var(--white); }

  /* PRODUCT LAYOUT */
  .product-wrapper {
    max-width: 1140px;
    margin: 0 auto;
    padding: 40px 30px 80px;
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 56px;
    align-items: start;
  }

  /* LEFT: GALLERY + DETAILS */
  .product-left {}

  /* GALLERY */
  .gallery {
    margin-bottom: 48px;
  }

  .gallery-main {
    background: var(--dark2);
    border: 1px solid #2a2a2a;
    border-radius: 14px;
    height: 420px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    margin-bottom: 12px;
    cursor: zoom-in;
    transition: border-color 0.2s;
  }

  .gallery-main:hover { border-color: #333; }

  .gallery-main-icon {
    color: var(--gold);
    opacity: 0.5;
    transition: opacity 0.3s, transform 0.3s;
  }

  .gallery-main:hover .gallery-main-icon {
    opacity: 0.7;
    transform: scale(1.04);
  }

  .gallery-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--gold);
    color: var(--black);
    font-size: 9px;
    font-weight: 800;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: 3px;
  }

  .gallery-zoom-hint {
    position: absolute;
    bottom: 14px;
    right: 14px;
    background: rgba(0,0,0,0.55);
    color: var(--gray);
    font-size: 10px;
    letter-spacing: 1px;
    padding: 5px 10px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 5px;
    pointer-events: none;
  }

  .gallery-thumbs {
    display: flex;
    gap: 10px;
  }

  .gallery-thumb {
    width: 72px;
    height: 72px;
    background: var(--dark2);
    border: 1px solid #2a2a2a;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--gold);
    opacity: 0.45;
    flex-shrink: 0;
  }

  .gallery-thumb:hover { border-color: #444; opacity: 0.7; }
  .gallery-thumb.active { border-color: var(--gold); opacity: 1; }

  /* TABS */
  .product-tabs {
    border-bottom: 1px solid #2a2a2a;
    display: flex;
    gap: 0;
    margin-bottom: 32px;
  }

  .tab-btn {
    background: none;
    border: none;
    color: var(--gray);
    font-family: 'DM Sans', sans-serif;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: 14px 20px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color 0.2s, border-color 0.2s;
  }

  .tab-btn:hover { color: var(--white); }
  .tab-btn.active { color: var(--gold); border-bottom-color: var(--gold); }

  .tab-panel { display: none; }
  .tab-panel.active { display: block; animation: fadeIn 0.3s ease; }

  @keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

  /* DESCRIPTION */
  .product-description p {
    color: var(--gray);
    font-size: 14px;
    line-height: 1.9;
    margin-bottom: 16px;
  }

  .product-description strong { color: var(--white); }

  .feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
  }

  .feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13px;
    color: var(--gray);
    line-height: 1.6;
  }

  .feature-list li svg { flex-shrink: 0; margin-top: 2px; color: var(--gold); }

  /* SPECS TABLE */
  .specs-table {
    width: 100%;
    border-collapse: collapse;
  }

  .specs-table tr {
    border-bottom: 1px solid #1e1e1e;
    transition: background 0.15s;
  }

  .specs-table tr:hover { background: rgba(255,255,255,0.02); }
  .specs-table tr:last-child { border-bottom: none; }

  .specs-table td {
    padding: 12px 0;
    font-size: 13px;
  }

  .specs-table td:first-child {
    color: var(--gray);
    width: 48%;
    font-weight: 500;
  }

  .specs-table td:last-child {
    color: var(--white);
    font-weight: 600;
    font-family: 'Space Mono', monospace;
    font-size: 12px;
  }

  /* DOWNLOADS */
  .downloads-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .download-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--dark2);
    border: 1px solid #2a2a2a;
    border-radius: 8px;
    padding: 14px 18px;
    transition: border-color 0.2s;
    text-decoration: none;
    color: inherit;
  }

  .download-item:hover { border-color: var(--gold); }

  .download-item-left {
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .download-item-left svg { color: var(--gold); flex-shrink: 0; }

  .download-item-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 2px;
  }

  .download-item-meta {
    font-size: 11px;
    color: var(--gray);
    font-family: 'Space Mono', monospace;
  }

  .download-btn {
    background: rgba(245,200,66,0.1);
    border: 1px solid rgba(245,200,66,0.2);
    color: var(--gold);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 6px 14px;
    border-radius: 4px;
    cursor: pointer;
    font-family: 'DM Sans', sans-serif;
    transition: all 0.2s;
    white-space: nowrap;
  }

  .download-btn:hover { background: rgba(245,200,66,0.2); }

  /* RIGHT: STICKY PANEL */
  .product-panel {
    position: sticky;
    top: 88px;
    background: var(--dark2);
    border: 1px solid #2a2a2a;
    border-radius: 16px;
    overflow: hidden;
  }

  .panel-header {
    padding: 24px 24px 20px;
    border-bottom: 1px solid #222;
  }

  .panel-cat {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 10px;
  }

  .panel-name {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 26px;
    letter-spacing: 1.5px;
    line-height: 1.1;
    color: var(--white);
    margin-bottom: 10px;
  }

  .panel-badges {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
  }

  .panel-badge {
    font-size: 9px;
    font-weight: 800;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: 3px;
  }

  .panel-badge.new { background: #2ECC71; color: white; }
  .panel-badge.stock { background: rgba(46,204,113,0.15); color: #2ECC71; border: 1px solid rgba(46,204,113,0.3); }

  /* VARIANTS */
  .panel-section {
    padding: 18px 24px;
    border-bottom: 1px solid #222;
  }

  .panel-section-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--gray);
    margin-bottom: 12px;
  }

  .variant-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
  }

  .variant-btn {
    background: var(--dark3);
    border: 1px solid #333;
    color: var(--gray);
    font-family: 'DM Sans', sans-serif;
    font-size: 12px;
    font-weight: 600;
    padding: 7px 14px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s;
  }

  .variant-btn:hover { border-color: #555; color: var(--white); }
  .variant-btn.active { background: rgba(245,200,66,0.12); border-color: var(--gold); color: var(--gold); }

  /* COLOR SWATCHES */
  .color-row {
    display: flex;
    gap: 10px;
    align-items: center;
  }

  .color-swatch {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.15s;
    position: relative;
    flex-shrink: 0;
  }

  .color-swatch:hover { transform: scale(1.1); }

  .color-swatch.active {
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(245,200,66,0.2);
  }

  .color-swatch.white-swatch { background: #f0f0f0; }
  .color-swatch.black-swatch { background: #1a1a1a; border: 2px solid #444; }

  .color-label {
    font-size: 12px;
    color: var(--gray);
  }

  /* QTY + CTA */
  .panel-cta {
    padding: 20px 24px 24px;
  }

  .qty-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
  }

  .qty-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--gray);
    white-space: nowrap;
  }

  .qty-control {
    display: flex;
    align-items: center;
    background: var(--dark3);
    border: 1px solid #333;
    border-radius: 6px;
    overflow: hidden;
  }

  .qty-btn {
    background: none;
    border: none;
    color: var(--gray);
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    transition: all 0.15s;
    font-weight: 300;
  }

  .qty-btn:hover { color: var(--gold); background: rgba(245,200,66,0.07); }

  .qty-input {
    background: none;
    border: none;
    color: var(--white);
    font-family: 'Space Mono', monospace;
    font-size: 13px;
    font-weight: 700;
    width: 44px;
    text-align: center;
    outline: none;
  }

  .qty-input::-webkit-inner-spin-button,
  .qty-input::-webkit-outer-spin-button { appearance: none; }

  .btn-primary {
    width: 100%;
    background: var(--gold);
    color: var(--black);
    border: none;
    padding: 15px 20px;
    font-family: 'DM Sans', sans-serif;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 10px;
  }

  .btn-primary:hover { background: var(--accent); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(245,200,66,0.25); }

  .btn-secondary-full {
    width: 100%;
    background: transparent;
    color: var(--white);
    border: 1px solid #333;
    padding: 13px 20px;
    font-family: 'DM Sans', sans-serif;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-decoration: none;
  }

  .btn-secondary-full:hover { border-color: var(--gold); color: var(--gold); }

  /* TRUST SIGNALS */
  .panel-trust {
    padding: 16px 24px;
    border-top: 1px solid #222;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .trust-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    color: var(--gray);
  }

  .trust-item svg { color: var(--gold); flex-shrink: 0; }

  /* SHARE */
  .panel-share {
    padding: 14px 24px;
    border-top: 1px solid #1e1e1e;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .share-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--gray);
    margin-right: 2px;
  }

  .share-btn {
    width: 30px; height: 30px;
    background: var(--dark3);
    border: 1px solid #2a2a2a;
    border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    color: var(--gray);
    transition: all 0.15s;
    text-decoration: none;
  }

  .share-btn:hover { border-color: var(--gold); color: var(--gold); }

  /* RELATED */
  .related-section {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 30px 80px;
  }

  .related-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 28px;
  }

  .section-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 6px;
  }

  .section-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 36px;
    letter-spacing: 1px;
    line-height: 1;
  }

  .section-link {
    color: var(--gold);
    text-decoration: none;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s;
    white-space: nowrap;
  }

  .section-link:hover { gap: 12px; }

  .related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }

  .product-card {
    background: var(--dark2);
    border: 1px solid #2a2a2a;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
    display: block;
    text-decoration: none;
    color: inherit;
  }

  .product-card:hover {
    border-color: rgba(245,200,66,0.45);
    transform: translateY(-4px);
    box-shadow: 0 14px 36px rgba(0,0,0,0.4);
  }

  .product-img {
    width: 100%;
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--dark3) 0%, #1e1e1e 100%);
    color: var(--gold);
    position: relative;
    overflow: hidden;
  }

  .product-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(245,200,66,0.07) 0%, transparent 70%);
  }

  .product-info { padding: 14px; }

  .product-cat {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 5px;
  }

  .product-name {
    font-size: 13px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 10px;
    color: var(--white);
  }

  .product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 10px;
    border-top: 1px solid #2a2a2a;
  }

  .product-price {
    font-size: 10px;
    color: var(--gray);
    font-family: 'Space Mono', monospace;
  }

  .product-price strong {
    display: block;
    font-family: 'DM Sans', sans-serif;
    font-size: 13px;
    font-weight: 700;
    color: var(--white);
    margin-top: 1px;
  }

  .btn-add {
    background: var(--gold);
    color: var(--black);
    border: none;
    width: 30px; height: 30px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex; align-items: center; justify-content: center;
  }

  .btn-add:hover { background: var(--accent); transform: scale(1.1); }

  /* DIVIDER */
  .divider {
    max-width: 1140px;
    margin: 0 auto 56px;
    padding: 0 30px;
    border: none;
    border-top: 1px solid #1e1e1e;
  }

  /* WHATSAPP FLOAT */
  .whatsapp-float {
    position: fixed;
    bottom: 28px; right: 28px;
    z-index: 999;
    background: #25D366;
    color: white;
    width: 54px; height: 54px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(37,211,102,0.35);
    animation: float 3s ease-in-out infinite;
  }

  .whatsapp-float:hover { transform: scale(1.1); }

  @keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
  }

  /* FOOTER */
  footer {
    background: var(--dark);
    border-top: 1px solid #2a2a2a;
    padding: 28px 30px;
  }

  .footer-bottom {
    max-width: 1140px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
  }

  .footer-bottom p { color: #555; font-size: 12px; }
  .footer-bottom a { color: var(--gold); text-decoration: none; }

  /* RESPONSIVE */
  @media (max-width: 1024px) {
    .product-wrapper { grid-template-columns: 1fr; gap: 40px; }
    .product-panel { position: static; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    nav { display: none; }
  }

  @media (max-width: 640px) {
    .product-wrapper { padding: 24px 20px 60px; }
    .gallery-main { height: 280px; }
    .related-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .related-section { padding: 0 20px 60px; }
    .panel-name { font-size: 22px; }
  }