/* ============================================================
   BHARAT AUTO HUB — Bike Detail Page Styles
   Extends style.css — uses same custom properties
   ============================================================ */

/* ── BREADCRUMB ───────────────────────────────────────────── */
.breadcrumb {
  padding-top: 84px; /* 68px header + 16px */
  padding-bottom: var(--space-4);
}
.breadcrumb ol {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.breadcrumb li { display: flex; align-items: center; gap: var(--space-2); }
.breadcrumb li + li::before {
  content: '›';
  color: var(--color-text-faint);
  font-size: var(--text-sm);
}
.breadcrumb a {
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.breadcrumb a:hover { color: var(--color-gold); }
.breadcrumb [aria-current="page"] {
  color: var(--color-gold);
  font-weight: 600;
}

/* ── PRODUCT HERO ─────────────────────────────────────────── */
.product-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
  padding-bottom: var(--space-16);
}

.product-hero__gallery {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  padding: var(--space-6);
}
.product-hero__image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
}
.product-hero__colors {
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-4);
}

.product-hero__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.product-hero__brand {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold);
}
.product-hero__name {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.1;
}
.product-hero__tagline {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.6;
}
.product-hero__price {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-gold);
  line-height: 1;
}
.product-hero__price-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-1);
}
.product-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* ── QUICK SPECS ──────────────────────────────────────────── */
.quick-specs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-4);
  padding-block: var(--space-12);
}
.quick-specs__item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  text-align: center;
  transition: border-color var(--transition);
}
.quick-specs__item:hover { border-color: var(--color-gold); }
.quick-specs__value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-white);
  display: block;
  margin-bottom: var(--space-1);
}
.quick-specs__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

/* ── SPECS ACCORDION ──────────────────────────────────────── */
.specs-section { padding-block: var(--space-12); }

.specs-accordion { max-width: 800px; margin-inline: auto; }
.specs-accordion details {
  border-bottom: 1px solid var(--color-border);
}
.specs-accordion summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) 0;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-white);
  cursor: pointer;
  list-style: none;
  transition: color var(--transition);
}
.specs-accordion summary::-webkit-details-marker { display: none; }
.specs-accordion summary::after {
  content: '+';
  font-size: var(--text-xl);
  color: var(--color-gold);
  transition: transform var(--transition);
}
.specs-accordion details[open] summary::after {
  content: '−';
}
.specs-accordion summary:hover { color: var(--color-gold); }

.specs-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-5);
}
.specs-table tr { border-bottom: 1px solid rgba(42,42,42,0.5); }
.specs-table td {
  padding: var(--space-3) 0;
  font-size: var(--text-sm);
  vertical-align: top;
}
.specs-table td:first-child {
  color: var(--color-text-muted);
  width: 45%;
  padding-right: var(--space-4);
}
.specs-table td:last-child {
  color: var(--color-text);
  font-weight: 500;
}

/* ── EMI TABLE ────────────────────────────────────────────── */
.emi-section { padding-block: var(--space-12); }

.emi-table-wrap {
  max-width: 800px;
  margin-inline: auto;
  overflow-x: auto;
}
.emi-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.emi-table thead { background: var(--color-surface-2); }
.emi-table th {
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gold);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.emi-table td {
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}
.emi-table tbody tr:last-child td { border-bottom: none; }
.emi-table tbody tr:hover { background: var(--color-surface-2); }

.emi-disclaimer {
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
  max-width: 800px;
  margin-inline: auto;
}

/* ── ABOUT BIKE (Editorial) ───────────────────────────────── */
.bike-about {
  padding-block: var(--space-12);
  max-width: 800px;
  margin-inline: auto;
}
.bike-about p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  line-height: 1.85;
  margin-bottom: var(--space-5);
}
.bike-about p:last-child { margin-bottom: 0; }

/* ── FAQ SECTION ──────────────────────────────────────────── */
.faq-section { padding-block: var(--space-12); }

.faq-list {
  max-width: 800px;
  margin-inline: auto;
}
.faq-list details {
  border-bottom: 1px solid var(--color-border);
}
.faq-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) 0;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-white);
  cursor: pointer;
  list-style: none;
  transition: color var(--transition);
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: '+';
  font-size: var(--text-xl);
  color: var(--color-gold);
  flex-shrink: 0;
  margin-left: var(--space-4);
}
.faq-list details[open] summary::after { content: '−'; }
.faq-list summary:hover { color: var(--color-gold); }
.faq-list .faq-answer {
  padding-bottom: var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.8;
}

/* ── RELATED BIKES ────────────────────────────────────────── */
.related-section { padding-block: var(--space-12); }

.related-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.related-card {
  display: block;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.related-card:hover {
  border-color: var(--color-gold);
  box-shadow: var(--shadow-card);
  transform: translateY(-4px);
}
.related-card__img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: contain;
  background: var(--color-surface);
  padding: var(--space-4);
}
.related-card__body { padding: var(--space-5); }
.related-card__name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-1);
}
.related-card__price {
  font-size: var(--text-sm);
  color: var(--color-gold);
  font-weight: 600;
}

/* ── CTA BANNER ───────────────────────────────────────────── */
.cta-banner {
  background: linear-gradient(135deg, var(--color-surface) 0%, rgba(201,168,76,0.08) 100%);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--space-16);
  text-align: center;
}
.cta-banner__title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-3);
}
.cta-banner__sub {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  margin-bottom: var(--space-8);
}
.cta-banner__actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* ── GALLERY ─────────────────────────────────────────────── */
.gallery-section { padding-block: var(--space-8) var(--space-12); }

.gallery {
  max-width: 900px;
  margin-inline: auto;
}
.gallery__main {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: zoom-in;
}
.gallery__main-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  display: block;
  transition: opacity 0.25s ease;
}
.gallery__main-img.is-loading { opacity: .4; }

.gallery__thumbs {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-3);
  overflow-x: auto;
  padding-bottom: var(--space-2);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}
.gallery__thumb {
  flex-shrink: 0;
  width: 80px;
  height: 60px;
  border: 2px solid transparent;
  border-radius: var(--radius-sm, 6px);
  overflow: hidden;
  cursor: pointer;
  background: var(--color-surface);
  padding: 2px;
  transition: border-color var(--transition);
}
.gallery__thumb:hover { border-color: var(--color-text-muted); }
.gallery__thumb.active { border-color: var(--color-gold); }
.gallery__thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* ── GALLERY SLIDESHOW CONTROLS ───────────────────────────── */
.gallery__controls {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: linear-gradient(transparent, rgba(0,0,0,0.5));
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}
.gallery__progress {
  flex: 1;
  height: 3px;
  background: rgba(255,255,255,0.2);
  border-radius: 2px;
  overflow: hidden;
}
.gallery__progress-bar {
  height: 100%;
  width: 0%;
  background: var(--color-gold);
  border-radius: 2px;
}
.gallery__playpause {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.15);
  border: none;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  transition: background var(--transition);
}
.gallery__playpause:hover { background: rgba(255,255,255,0.3); }

/* ── LIGHTBOX ────────────────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 400;
  background: rgba(0,0,0,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}
.lightbox__img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  user-select: none;
}
.lightbox__close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.1);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 24px;
  cursor: pointer;
  transition: background var(--transition);
}
.lightbox__close:hover { background: rgba(255,255,255,0.25); }

.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.1);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  transition: background var(--transition);
}
.lightbox__nav:hover { background: rgba(255,255,255,0.25); }
.lightbox__nav--prev { left: var(--space-4); }
.lightbox__nav--next { right: var(--space-4); }

.lightbox__counter {
  position: absolute;
  bottom: var(--space-4);
  left: 50%;
  transform: translateX(-50%);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
}

/* ── RESPONSIVE — max 768px ───────────────────────────────── */
@media (max-width: 768px) {
  .breadcrumb { padding-top: 78px; }

  .product-hero {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    padding-bottom: var(--space-10);
  }

  .product-hero__name {
    font-size: var(--text-3xl);
  }

  .product-hero__price {
    font-size: var(--text-3xl);
  }

  .product-hero__actions {
    flex-direction: column;
  }
  .product-hero__actions .btn {
    width: 100%;
    justify-content: center;
  }

  .quick-specs {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
    padding-block: var(--space-8);
  }
  .quick-specs__value { font-size: var(--text-lg); }

  .specs-section,
  .emi-section,
  .bike-about,
  .faq-section,
  .related-section { padding-block: var(--space-8); }

  .related-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  .gallery__thumb { width: 64px; height: 48px; }
  .lightbox__nav { width: 40px; height: 40px; font-size: 18px; }
  .lightbox__nav--prev { left: var(--space-2); }
  .lightbox__nav--next { right: var(--space-2); }

  .cta-banner { padding-block: var(--space-10); }
  .cta-banner__actions { flex-direction: column; align-items: center; }
  .cta-banner__actions .btn { width: 100%; max-width: 320px; justify-content: center; }
}

/* ── RESPONSIVE — max 480px ───────────────────────────────── */
@media (max-width: 480px) {
  .quick-specs { grid-template-columns: repeat(2, 1fr); }

  .related-grid { grid-template-columns: 1fr; }

  .specs-accordion summary { font-size: var(--text-base); }

  .emi-table th,
  .emi-table td { padding: var(--space-3); font-size: var(--text-xs); }
}