/* ==================================================
   Shredder Product Detail Layout (sd- prefix)
   Reference: aceretech-style product page layout
   Used by: single-shaft-shredder, double-shaft-shredder, pipe-shredder
   ================================================== */

html { scroll-behavior: smooth; }

/* ---------- 1. Hero Section (centered: image, dots, title, CTA) ---------- */
.sd-hero {
  padding: 100px 0 48px;
  background: #fff;
}
.sd-hero .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}
.sd-hero-main {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: 16px;
  overflow: hidden;
  background: #f8f9fa;
}
.sd-hero-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.sd-hero-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}
.sd-hero-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #cbd5e1;
  cursor: pointer;
  transition: all 0.3s;
}
.sd-hero-dot.active {
  background: var(--brand);
  width: 24px;
  border-radius: 4px;
}
.sd-hero-title {
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 800;
  line-height: 1.25;
  color: #0f172a;
  margin: 24px 0 20px;
  letter-spacing: -0.02em;
}
.sd-hero-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  background: #0f172a;
  color: #fff;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s;
}
.sd-hero-cta:hover {
  background: #1e293b;
}

/* Hero breadcrumb, tags, CTA group, video link (PET-style layout) */
.sd-hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #64748b;
  margin-bottom: 16px;
}
.sd-hero-breadcrumb a {
  color: #64748b;
  text-decoration: none;
}
.sd-hero-breadcrumb a:hover {
  color: var(--brand);
}
.sd-hero-breadcrumb span:last-child {
  color: #94a3b8;
}
.sd-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}
.sd-hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: #f1f5f9;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: #334155;
}
.sd-hero-tag svg {
  width: 16px;
  height: 16px;
  color: var(--brand);
  flex-shrink: 0;
}
.sd-hero-cta-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.sd-hero-cta-group .sd-hero-cta {
  gap: 8px;
}
.sd-hero-cta-group .sd-hero-cta svg {
  width: 18px;
  height: 18px;
}
.sd-hero-cta-primary {
  background: var(--brand) !important;
}
.sd-hero-cta-primary:hover {
  background: var(--brand-dark, #0066cc) !important;
  transform: translateY(-1px);
}
.sd-hero-cta-secondary {
  background: #fff !important;
  color: var(--brand) !important;
  border: 1.5px solid var(--brand) !important;
}
.sd-hero-cta-secondary:hover {
  background: rgba(10, 132, 255, 0.06) !important;
}
.sd-hero-video-wrap {
  margin-top: 0;
}
.sd-hero-video-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 0;
  color: var(--brand);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s ease;
}
.sd-hero-video-link:hover {
  opacity: 0.8;
  text-decoration: underline;
}
.sd-hero-video-icon {
  font-size: 13px;
  transform: translateY(-0.5px);
}
.sd-hero-video-duration {
  color: #64748b;
  font-weight: 600;
}

/* Hero split layout: left image, right title & description */
.sd-hero--split .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  max-width: 1100px;
  text-align: left;
}
.sd-hero--split .sd-hero-media {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.sd-hero--split .sd-hero-dots {
  justify-content: flex-start;
}
.sd-hero--split .sd-hero-title {
  font-size: clamp(28px, 4vw, 42px);
  margin: 0 0 20px;
}
.sd-hero--split .sd-hero-desc {
  font-size: 15px;
  line-height: 1.7;
  color: #475569;
  margin: 0 0 24px;
}
.sd-hero--split .sd-hero-content .sd-hero-breadcrumb {
  margin-bottom: 12px;
}
@media (max-width: 768px) {
  .sd-hero--split .container {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .sd-hero--split .sd-hero-dots {
    justify-content: center;
  }
  .sd-hero--split .sd-hero-content {
    text-align: center;
  }
  .sd-hero--split .sd-hero-breadcrumb {
    justify-content: center;
  }
  .sd-hero--split .sd-hero-tags {
    justify-content: center;
  }
  .sd-hero--split .sd-hero-cta-group {
    justify-content: center;
  }
}

/* Hero carousel (multiple slides) */
.sd-hero--carousel .sd-hero-main {
  position: relative;
}
.sd-hero--carousel .sd-hero-slides {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.sd-hero--carousel .sd-hero-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.5s ease;
}
.sd-hero--carousel .sd-hero-slide.active {
  opacity: 1;
  z-index: 1;
}
.sd-hero--carousel .sd-hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.sd-hero--carousel .sd-hero-dot {
  border: none;
  padding: 0;
}
.sd-hero--carousel .sd-hero-dot:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* ---------- 2. Product Overview & Video (two columns) ---------- */
.sd-overview-section {
  padding: 60px 0;
  background: #f8fafc;
}
.sd-overview-section .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.sd-overview h2 {
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.sd-overview p {
  font-size: 15px;
  line-height: 1.75;
  color: #475569;
  margin: 0 0 14px;
}
.sd-overview p:last-child { margin-bottom: 0; }
.sd-video-wrap {
  position: relative;
  aspect-ratio: 16/9;
  border-radius: 16px;
  overflow: hidden;
  background: #0f172a;
}
.sd-video-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.sd-video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 72px;
  height: 72px;
  background: rgba(255,255,255,0.95);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: 0;
  transition: transform 0.2s;
}
.sd-video-play:hover { transform: translate(-50%, -50%) scale(1.08); }
.sd-video-play svg {
  width: 28px;
  height: 28px;
  color: var(--brand);
  margin-left: 4px;
}

/* ---------- 3. Application & Raw Materials (2x2 grid) ---------- */
.sd-materials-section {
  padding: 60px 0;
  background: #fff;
}
.sd-section-title {
  text-align: center;
  font-size: clamp(22px, 2.8vw, 30px);
  font-weight: 800;
  color: #0f172a;
  margin: 0 0 36px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.sd-materials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}
/* Four images in one row (double-shaft-shredder) */
.sd-materials-section--row4 .sd-materials-grid {
  grid-template-columns: repeat(4, 1fr);
  max-width: 1100px;
}
.sd-material-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  overflow: hidden;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.sd-material-card:hover {
  border-color: var(--brand);
  box-shadow: 0 8px 24px rgba(10,132,255,0.1);
}
.sd-material-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}
.sd-material-card span {
  padding: 14px 16px;
  font-size: 14px;
  font-weight: 600;
  color: #334155;
  text-align: center;
}

/* ---------- 4. Key Features (image left, 6 feature blocks right) ---------- */
.sd-features-section {
  padding: 60px 0;
  background: #f8fafc;
}
.sd-features-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}
.sd-features-img {
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: #e2e8f0;
}
.sd-features-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.sd-features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.sd-feature-block {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 20px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.sd-feature-block:hover {
  border-color: var(--brand);
  box-shadow: 0 4px 16px rgba(10,132,255,0.08);
}
.sd-feature-block h4 {
  font-size: 14px;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 8px;
}
.sd-feature-block p {
  font-size: 13px;
  color: #64748b;
  line-height: 1.5;
  margin: 0;
}

/* ---------- 5. Technical Parameters (table) ---------- */
.sd-params-section {
  padding: 60px 0;
  background: #fff;
}
.sd-table-wrap {
  overflow-x: auto;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  max-width: 1000px;
  margin: 0 auto;
}
.sd-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  min-width: 600px;
}
.sd-table thead { background: var(--brand); color: #fff; }
.sd-table th {
  padding: 14px 16px;
  text-align: left;
  font-size: 13px;
  font-weight: 700;
}
.sd-table td {
  padding: 12px 16px;
  font-size: 13px;
  color: #334155;
  border-bottom: 1px solid #e2e8f0;
}
.sd-table tbody tr:hover { background: #f8fafc; }
.sd-table-note {
  text-align: center;
  margin-top: 14px;
  font-size: 12px;
  color: #64748b;
}

/* ---------- 6. Machine Components/Details (list: image left, title+desc right) ---------- */
.sd-components-section {
  padding: 60px 0;
  background: #f8fafc;
}
.sd-components-list {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.sd-component-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  align-items: start;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 20px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.sd-component-item:hover {
  border-color: var(--brand);
  box-shadow: 0 4px 16px rgba(10,132,255,0.08);
}
.sd-component-img {
  width: 120px;
  height: 90px;
  border-radius: 10px;
  overflow: hidden;
  background: #f1f5f9;
  flex-shrink: 0;
}
.sd-component-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.sd-component-body h4 {
  font-size: 15px;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 8px;
}
.sd-component-body p {
  font-size: 15px;
  color: #64748b;
  line-height: 1.6;
  margin: 0;
}

/* ---------- 7. FAQ Section ---------- */
.sd-faq-section {
  padding: 60px 0;
  background: #fff;
}
.sd-faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.sd-faq-item {
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid #e2e8f0;
}
.sd-faq-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: 0;
}
.sd-faq-item h4 {
  font-size: 15px;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 10px;
}
.sd-faq-item p {
  font-size: 14px;
  color: #64748b;
  line-height: 1.5;
  margin: 0;
}

/* ---------- 8a. Info Cards (About Us, Why Us, Our Service, Get a Quote) ---------- */
.sd-info-section {
  padding: 60px 0;
  background: #f8fafc;
}
.sd-info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
}
.sd-info-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.sd-info-card:hover {
  border-color: var(--brand);
  box-shadow: 0 4px 16px rgba(10,132,255,0.08);
}
.sd-info-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 12px;
}
.sd-info-card p {
  font-size: 14px;
  color: #64748b;
  line-height: 1.55;
  margin: 0;
}

/* ---------- 8b. Customer Case (6 images) ---------- */
.sd-customer-section {
  padding: 60px 0;
  background: #fff;
}
.sd-customer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}
.sd-customer-item {
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 1;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.sd-customer-item:hover {
  border-color: var(--brand);
  box-shadow: 0 4px 16px rgba(10,132,255,0.08);
}
.sd-customer-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 8c. Workshop & Certification Banners ---------- */
.sd-banners-section {
  padding: 0 0 60px;
}
.sd-banners-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
}
.sd-banner {
  position: relative;
  aspect-ratio: 16/9;
  border-radius: 16px;
  overflow: hidden;
  background: #1e293b;
}
.sd-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.sd-banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(0,0,0,0.75) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
}
.sd-banner-title {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin: 0 0 4px;
}
.sd-banner-sub {
  font-size: 14px;
  color: rgba(255,255,255,0.85);
}
.sd-banner-info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 1100px;
  margin: 24px auto 0;
}
.sd-banner-info-card {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 24px;
}
.sd-banner-info-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 8px;
}
.sd-banner-info-card p {
  font-size: 14px;
  color: #64748b;
  line-height: 1.5;
  margin: 0;
}

/* ---------- 9. Related Products (3 cards) ---------- */
.sd-related-section {
  padding: 60px 0;
  background: #f8fafc;
}
.sd-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}
.sd-related-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: all 0.2s;
}
.sd-related-card:hover {
  border-color: var(--brand);
  box-shadow: 0 8px 24px rgba(10,132,255,0.12);
}
.sd-related-card-img {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
}
.sd-related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.sd-related-card-body {
  padding: 16px;
  text-align: center;
}
.sd-related-card-body h4 {
  font-size: 15px;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 8px;
}
.sd-related-card-body p {
  font-size: 13px;
  color: #64748b;
  line-height: 1.4;
  margin: 0;
}

/* ---------- 10. Contact Section (two columns) ---------- */
.sd-contact-section {
  padding: 60px 0;
  background: #fff;
}
.sd-contact-section .container {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}
.sd-contact-info h2 {
  font-size: clamp(22px, 2.5vw, 28px);
  font-weight: 800;
  color: #0f172a;
  margin: 0 0 16px;
}
.sd-contact-info p,
.sd-contact-info a {
  font-size: 15px;
  color: #64748b;
  line-height: 1.6;
  margin: 0 0 8px;
  margin-bottom: 8px;
  display: block;
}
.sd-contact-info a {
  color: var(--brand);
  text-decoration: none;
}
.sd-contact-info a:hover { text-decoration: underline; }
.sd-contact-form {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 32px;
}
.sd-contact-form h3 {
  font-size: 18px;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 20px;
}
.sd-contact-form form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.sd-contact-form .full-width { grid-column: 1 / -1; }
.sd-contact-form input,
.sd-contact-form textarea {
  padding: 12px 14px;
  border: 1.5px solid #e2e8f0;
  border-radius: 10px;
  font-size: 14px;
  color: #0f172a;
  background: #fff;
  font-family: inherit;
}
.sd-contact-form input:focus,
.sd-contact-form textarea:focus {
  outline: none;
  border-color: var(--brand);
}
.sd-contact-form textarea {
  resize: vertical;
  min-height: 100px;
}
.sd-contact-form button[type="submit"] {
  grid-column: 1 / -1;
  padding: 14px 24px;
  background: var(--brand);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s;
}
.sd-contact-form button[type="submit"]:hover {
  background: var(--brand-dark);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .sd-overview-section .container { grid-template-columns: 1fr; }
  .sd-features-inner { grid-template-columns: 1fr; }
  .sd-features-img { max-width: 500px; margin: 0 auto; }
  .sd-banners-grid { grid-template-columns: 1fr; }
  .sd-banner-info { grid-template-columns: 1fr; }
  .sd-related-grid { grid-template-columns: repeat(2, 1fr); }
  .sd-contact-section .container { grid-template-columns: 1fr; }
  .sd-materials-section--row4 .sd-materials-grid { grid-template-columns: repeat(2, 1fr); }
  .sd-info-grid { grid-template-columns: repeat(2, 1fr); }
  .sd-customer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .sd-hero { padding: 90px 0 40px; }
  .sd-materials-grid { grid-template-columns: 1fr; }
  .sd-materials-section--row4 .sd-materials-grid { grid-template-columns: 1fr; }
  .sd-features-grid { grid-template-columns: 1fr; }
  .sd-info-grid { grid-template-columns: 1fr; }
  .sd-customer-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .sd-component-item { grid-template-columns: 1fr; }
  .sd-component-img { width: 100%; height: 100%; aspect-ratio: 4/3; }
  .sd-related-grid { grid-template-columns: 1fr; }
  .sd-contact-form form { grid-template-columns: 1fr; }
}