/* =============================================
   products.css  —  D2Cranes Products Page
   Tab-based layout
   ============================================= */

/* ---------- Page Hero ---------- */
.prod-hero {
  position: relative;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.prod-hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center top;
}
.prod-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(125deg, rgba(8,34,90,.72) 0%, rgba(16,82,180,.45) 100%);
}
.prod-hero__content {
  position: relative;
  z-index: 2;
  color: #fff;
  text-align: center;
}
.prod-hero__content h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 600;
  line-height: 1.15;
  margin-bottom: 12px;
}
.prod-hero__content h1 span { color: var(--yellow); }
.prod-hero__content > p {
  font-size: .97rem;
  color: rgba(255,255,255,.72);
  max-width: 480px;
  line-height: 1.7;
  margin: 0 auto;
}

/* Breadcrumb */
.prod-breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: .78rem;
  color: rgba(255,255,255,.55);
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.prod-breadcrumb a {
  color: rgba(255,255,255,.55);
  text-decoration: none;
  transition: color .2s;
}
.prod-breadcrumb a:hover { color: #fff; }
.prod-breadcrumb i { font-size: .6rem; }
.prod-breadcrumb span { color: rgba(255,255,255,.55); }

/* ---------- Tabs Section Wrapper ---------- */
.prod-page-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 30px;
  align-items: start;
}

.prod-tabs-section {
  background: #f8f9fb;
  padding: 56px 0 72px;
}

/* ---------- Tab Buttons ---------- */
.prod-tabs {
  display: flex;
  flex-direction: column;
  gap: 3px;
  background: #fff;
  border: 1px solid #e8edf5;
  border-radius: 12px;
  padding: 10px;
  width: 100%;
  position: sticky;
  top: 110px;
}

.prod-tab {
  display: flex;
  align-items: center;
  text-align: left;
  gap: 10px;
  padding: 11px 14px;
  background: transparent;
  border: none;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 400;
  color: #64748b;
  cursor: pointer;
  transition: all .2s ease;
  width: 100%;
}
.prod-tab i {
  font-size: 0.85rem;
  color: #a0aec0;
  transition: color .2s;
  width: 18px;
  text-align: center;
  flex-shrink: 0;
}
.prod-tab:hover {
  color: var(--blue);
  background: var(--blue-pale);
}
.prod-tab:hover i { color: var(--blue); }
.prod-tab.active {
  color: var(--blue-dark);
  background: var(--blue-pale);
  font-weight: 500;
}
.prod-tab.active i { color: var(--blue); }

/* ---------- Tab Panels ---------- */
.prod-tab-panels { position: relative; }

.prod-panel {
  display: none;
  animation: fadePanel .3s ease;
}
.prod-panel.active { display: block; }

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

/* ---------- Product Layout inside panel ---------- */
.prod-layout {
  display: flex;
  flex-direction: column;
  gap: 28px;
  background: #fff;
  border-radius: 14px;
  padding: 32px 36px;
  box-shadow: 0 2px 16px rgba(0,0,0,.06);
  border: 1px solid #eef1f7;
}

/* ---------- Gallery ---------- */
.prod-gallery { display: flex; flex-direction: column; gap: 10px; }

.prod-gallery__main {
  border-radius: 12px;
  overflow: hidden;
  background: #f5f7fb;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #e8edf5;
}
.prod-gallery__main img {
  width: 100%;
  height: auto;
  max-height: 440px;
  object-fit: contain;
  display: block;
  transition: transform .4s ease;
  padding: 8px;
}
.prod-gallery__main:hover img { transform: scale(1.02); }

.prod-gallery__thumbs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.prod-gallery__thumbs img {
  width: 68px;
  height: 52px;
  object-fit: cover;
  border-radius: 8px;
  border: 2px solid #e8edf5;
  cursor: pointer;
  opacity: .7;
  transition: all .2s ease;
}
.prod-gallery__thumbs img:hover,
.prod-gallery__thumbs img.active {
  opacity: 1;
  border-color: var(--blue);
}

/* ---- Image grid: appears at TOP of panel (all folder images) ---- */
.prod-img-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  grid-auto-rows: 240px;   /* ความสูงของแถวภาพ — ไม่ยืดเกิน */
  gap: 10px;
  order: -1;               /* ขึ้นก่อน prod-info ใน flex column */
  flex-shrink: 0;          /* ไม่หด ไม่ทับ */
}
.prod-img-grid .prod-gallery__main {
  width: 100%;
  height: 100%;
  border-radius: 0;
  overflow: hidden;
  border: none;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: none;
}
.prod-img-grid .prod-gallery__main img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  padding: 0;
  max-height: none;
  transition: transform .4s ease;
}
.prod-img-grid .prod-gallery__main:hover img {
  transform: scale(1.03);
}

/* ---------- Product Info ---------- */
.prod-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.prod-info__tag {
  display: inline-block;
  background: var(--blue-pale);
  color: var(--blue);
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  padding: 4px 12px;
  border-radius: 20px;
  width: fit-content;
}

.prod-info h2 {
  font-size: clamp(1.45rem, 2.2vw, 1.9rem);
  font-weight: 600;
  color: var(--blue-dark);
  line-height: 1.25;
  margin: 0;
}

.prod-info__desc {
  font-size: 0.97rem;
  color: var(--text-soft);
  line-height: 1.78;
  margin: 0;
}

/* Specs grid */
.prod-info__specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.prod-spec {
  background: #f4f7fb;
  border-radius: 10px;
  padding: 13px 15px;
  border-left: 3px solid var(--blue);
}
.prod-spec__label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-soft);
  font-weight: 300;
  margin-bottom: 3px;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.prod-spec__val {
  display: block;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--blue-dark);
}

/* Features list */
.prod-info__features h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.prod-info__features ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.prod-info__features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.93rem;
  color: var(--text);
}
.prod-info__features li i {
  color: var(--blue);
  font-size: 0.85rem;
  flex-shrink: 0;
}

/* CTA button */
.prod-info__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--blue);
  color: #fff;
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 13px 28px;
  border-radius: 8px;
  width: fit-content;
  transition: background .2s ease, transform .15s ease;
  margin-top: 4px;
}
.prod-info__cta:hover {
  background: var(--blue-dark);
  transform: translateY(-1px);
}

/* =============================================
   Responsive
   ============================================= */

/* <= 1024px */
@media (max-width: 1024px) {
  .prod-page-grid { grid-template-columns: 1fr; }
  .prod-tabs {
    flex-direction: row;
    flex-wrap: wrap;
    position: static;
    padding: 8px;
    gap: 4px;
  }
  .prod-tab { width: auto; padding: 9px 13px; }
  .prod-tab.active { background: var(--blue); color: #fff; font-weight: 500; }
  .prod-tab.active i { color: #fff; }
  .prod-layout { padding: 24px 20px; gap: 20px; }
  .prod-img-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
}

/* <= 768px */
@media (max-width: 768px) {
  .prod-tabs-section { padding: 32px 0 48px; }
  .prod-tabs { gap: 4px; }
  .prod-tab { padding: 8px 12px; font-size: 0.8rem; gap: 6px; }
  .prod-tab i { display: none; }
  .prod-info__specs { grid-template-columns: 1fr; }
  .prod-layout { padding: 16px 14px; gap: 16px; }
  .prod-gallery__thumbs img { width: 56px; height: 42px; }
  .prod-img-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; grid-auto-rows: 200px; }
}

/* <= 480px */
@media (max-width: 480px) {
  .prod-hero { height: 220px; }
  .prod-hero__content h1 { font-size: 1.6rem; }
  .prod-info h2 { font-size: 1.35rem; }
  .prod-tab span { font-size: 0.76rem; }
  .prod-img-grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 160px; }
}

/* ---------- Detailed Product Specs (EX-PROOF) ---------- */
.prod-details-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 24px;
}
.prod-detail-card {
  background: #f8fafc;
  border-radius: 12px;
  padding: 16px;
  border-left: 4px solid var(--blue);
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.prod-detail-card i {
  color: var(--yellow);
  font-size: 1.2rem;
  margin-bottom: 8px;
  display: block;
}
.prod-detail-card h4 {
  font-size: 0.9rem;
  color: var(--blue-dark);
  margin-bottom: 8px;
  font-weight: 500;
}
.prod-detail-card p {
  font-size: 0.85rem;
  color: var(--text-soft);
  margin: 0;
  line-height: 1.6;
}

.prod-highlights {
  margin-top: 32px;
}
.prod-highlights h3 {
  font-size: 1rem;
  color: var(--blue-dark);
  font-weight: 600;
  margin-bottom: 16px;
  border-bottom: 1px solid #e2e8f0;
  padding-bottom: 8px;
}
.prod-highlights-text {
  font-size: 0.9rem;
  color: var(--text-soft);
  line-height: 1.7;
  margin-bottom: 24px;
}

.prod-feature-groups {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.prod-feature-group h4 {
  font-size: 0.92rem;
  color: var(--blue);
  font-weight: 500;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.prod-feature-group h4 i {
  color: var(--yellow);
}
.prod-feature-group ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.prod-feature-group ul li {
  font-size: 0.9rem;
  color: var(--text);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
}
.prod-feature-group ul li i {
  color: var(--blue);
  font-size: 0.8rem;
  margin-top: 4px;
}

@media (max-width: 768px) {
  .prod-details-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Tab Group (dropdown sub-menu in sidebar) ---------- */
.prod-tab-group {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.prod-tab-group__toggle {
  justify-content: space-between !important;
}
.prod-tab-group__sub {
  margin-left: 8px;
  border-left: 2px solid #e8edf5;
  padding-left: 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 2px;
}
.prod-tab--sub {
  font-size: 0.82rem !important;
  color: #7a8ba0 !important;
  padding: 8px 12px !important;
}
.prod-tab--sub.active {
  color: var(--blue) !important;
  font-weight: 500 !important;
  background: var(--blue-pale) !important;
}
.prod-tab-group__arrow {
  transition: transform .25s ease;
  font-size: 0.65rem !important;
  color: #a0aec0;
}

/* ---------- Spec badges (inline) ---------- */
.prod-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #f4f7fb;
  border: 1px solid #dde8f5;
  color: var(--blue-dark);
  padding: 6px 13px;
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.82rem;
}
.prod-badge i { color: var(--blue); font-size: 0.78rem; }

/* ---------- Panel content card (feature icon grid) ---------- */
.prod-feat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 28px;
}
.prod-feat-card {
  background: #f8fafd;
  border: 1px solid #e8edf5;
  border-radius: 12px;
  padding: 20px 16px;
  text-align: center;
  transition: box-shadow .2s ease, transform .2s ease;
}
.prod-feat-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(0,0,0,.07);
}
.prod-feat-card__icon {
  width: 44px; height: 44px;
  background: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,.06);
}
.prod-feat-card__icon i { color: var(--blue); font-size: 1.1rem; }
.prod-feat-card h4 {
  font-size: 0.85rem;
  color: var(--blue-dark);
  font-weight: 500;
  margin-bottom: 8px;
  line-height: 1.4;
}
.prod-feat-card p {
  font-size: 0.8rem;
  color: var(--text-soft);
  margin: 0;
  line-height: 1.6;
}

@media (max-width: 600px) {
  .prod-feat-grid { grid-template-columns: 1fr; gap: 10px; }
  .prod-feat-card { padding: 16px 14px; }
}

/* Crane Components — intro strip + stacked copy */
.prod-cc-intro {
  background: linear-gradient(135deg, #f0f7ff 0%, #f8fafc 100%);
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 20px 22px;
  margin-bottom: 8px;
}
.prod-cc-intro__head {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--blue-dark);
  margin: 0 0 12px;
  line-height: 1.35;
}
.prod-cc-intro__head i {
  color: var(--blue);
  font-size: 1.1rem;
}
.prod-cc-intro .prod-info__desc {
  margin: 0;
}
/* End Carriage — structured detail sections */
.prod-ec-details {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 28px;
}
.prod-ec-block {
  position: relative;
  background: #fff;
  border: 1px solid #e5eaf3;
  border-radius: 16px;
  box-shadow: 0 4px 22px rgba(15, 23, 42, 0.07);
  overflow: hidden;
  transition: box-shadow 0.25s ease, transform 0.22s ease;
}
.prod-ec-block:hover {
  box-shadow: 0 10px 32px rgba(15, 23, 42, 0.1);
  transform: translateY(-2px);
}
.prod-ec-block::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--blue) 0%, #143d7a 100%);
}
.prod-ec-block__inner {
  padding: 22px 24px 22px 28px;
}
.prod-ec-block__top {
  display: grid;
  grid-template-columns: 48px 1fr;
  column-gap: 16px;
  row-gap: 12px;
  align-items: start;
}
.prod-ec-block__top--head-only {
  row-gap: 0;
  margin-bottom: 4px;
}
.prod-ec-block__icon {
  grid-column: 1;
  grid-row: 1;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(145deg, #e8f1fc 0%, var(--blue-pale) 100%);
  border: 1px solid #d4e4f7;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  font-size: 1.12rem;
}
.prod-ec-block__title {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  padding-top: 2px;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--blue-dark);
  line-height: 1.45;
}
.prod-ec-block__text {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-soft);
  line-height: 1.75;
}
.prod-ec-pointlist {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  border-radius: 12px;
  background: #f8fafd;
  border: 1px solid #e8edf5;
  overflow: hidden;
}
.prod-ec-point {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px 12px;
  align-items: start;
  padding: 16px 18px;
  border-top: 1px solid #e8edf5;
}
.prod-ec-point:first-child {
  border-top: none;
}
.prod-ec-point__ico {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: #fff;
  border: 1px solid #dde8f5;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  font-size: 0.95rem;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}
.prod-ec-point p {
  margin: 2px 0 0;
  font-size: 0.88rem;
  color: var(--text-soft);
  line-height: 1.72;
}
@media (max-width: 480px) {
  .prod-ec-block__inner {
    padding: 18px 16px 18px 20px;
  }
  .prod-ec-block__top {
    grid-template-columns: 42px 1fr;
    column-gap: 12px;
  }
  .prod-ec-block__icon {
    width: 42px;
    height: 42px;
    font-size: 1rem;
  }
  .prod-ec-point {
    padding: 14px 14px;
    column-gap: 10px;
    grid-template-columns: 36px 1fr;
  }
  .prod-ec-point__ico {
    width: 36px;
    height: 36px;
    font-size: 0.88rem;
  }
}
.prod-cc-trans {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 20px 22px;
  margin-bottom: 28px;
}
.prod-cc-trans h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--blue-dark);
  font-weight: 600;
  font-size: 0.97rem;
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid #e2e8f0;
  line-height: 1.35;
}
.prod-cc-trans h3 i { color: var(--blue); font-size: 1.05rem; }
.prod-cc-trans > p {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.7;
  margin: 0;
}
.prod-cc-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
  margin-bottom: 28px;
}
.prod-cc-badges .prod-badge {
  background: #fff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
}