/* ==================================================
   KEYAN CORPORATION — PRODUCT DETAIL PAGE STYLESHEET
   Design System: Split-Screen B2B Ecommerce Product Stage
   Color Palette:
   - Deep Navy: #031F33 / #063B5C / #08334D
   - Industrial Orange: #FF7A18 / #E06305
   - Soft Industrial Grey: #F8FAFC / #F1F5F9 / #E2E8F0
   - Text: #0A1C28 / Muted: #64748B / White: #FFFFFF
   ================================================== */

:root {
  --pd-navy-darkest: #031F33;
  --pd-navy-deep: #063B5C;
  --pd-navy-mid: #0B4E74;
  --pd-navy-card: #08334D;

  --pd-orange: #FF7A18;
  --pd-orange-hover: #E06305;
  --pd-orange-glow: rgba(255, 122, 24, 0.25);

  --pd-bg-light: #F8FAFC;
  --pd-bg-card: #FFFFFF;
  --pd-border-light: #E2E8F0;

  --pd-text-dark: #0A1C28;
  --pd-text-muted: #64748B;
  --pd-text-light: #FFFFFF;

  --font-heading: 'Space Grotesk', 'Plus Jakarta Sans', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-subtle: 0 4px 16px rgba(6, 59, 92, 0.05);
  --shadow-card: 0 10px 30px rgba(6, 59, 92, 0.08);
}

.pd-page-body {
  background-color: #FFFFFF;
  color: var(--pd-text-dark);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ==================================================
   1. BREADCRUMB NAVIGATION BAR
   ================================================== */
.pd-breadcrumb-wrap {
  background: var(--pd-bg-light);
  border-bottom: 1px solid var(--pd-border-light);
  padding: 0.9rem 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--pd-text-muted);
}

.pd-breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.pd-breadcrumb-list a {
  color: var(--pd-navy-mid);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-smooth);
}

.pd-breadcrumb-list a:hover {
  color: var(--pd-orange);
}

.pd-breadcrumb-sep {
  color: #94A3B8;
  font-size: 0.7rem;
}

.pd-breadcrumb-current {
  color: var(--pd-text-dark);
  font-weight: 700;
}

/* ==================================================
   2. SPLIT-SCREEN PRODUCT DETAIL STAGE
   ================================================== */
.pd-stage-section {
  padding: 3.5rem 0 4.5rem;
}

.pd-stage-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

/* LEFT COLUMN: GALLERY */
.pd-gallery-container {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  position: sticky;
  top: 100px;
}

.pd-main-img-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--pd-bg-light);
  border: 1px solid var(--pd-border-light);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  box-shadow: var(--shadow-subtle);
  cursor: default;
}

.pd-main-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

/* Fullscreen Trigger Badge */
.pd-gallery-expand-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border: 1px solid var(--pd-border-light);
  color: var(--pd-navy-deep);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition-smooth);
}

.pd-gallery-expand-btn:hover {
  background: var(--pd-orange);
  color: #FFFFFF;
  border-color: var(--pd-orange);
}

/* Thumbnails Strip */
.pd-thumbs-strip {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
}

.pd-thumb-box {
  width: 80px;
  height: 80px;
  background: var(--pd-bg-light);
  border: 2px solid var(--pd-border-light);
  border-radius: 8px;
  padding: 0.4rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition-smooth);
}

.pd-thumb-box img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.pd-thumb-box.active {
  border-color: var(--pd-orange);
  box-shadow: 0 0 0 3px var(--pd-orange-glow);
}

/* RIGHT COLUMN: PRODUCT INFO PANEL */
.pd-info-container {
  display: flex;
  flex-direction: column;
}

.pd-meta-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.8rem;
}

.pd-category-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--pd-orange);
  background: rgba(255, 122, 24, 0.08);
  border: 1px solid rgba(255, 122, 24, 0.25);
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
}

.pd-sku-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--pd-text-muted);
  font-weight: 600;
}

.pd-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--pd-navy-darkest);
  margin-bottom: 0.8rem;
}

.pd-brand-row {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.pd-brand-name {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--pd-navy-mid);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.pd-stock-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: #059669;
  background: #ECFDF5;
  border: 1px solid #A7F3D0;
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
}

.pd-stock-badge.request-only {
  color: var(--pd-navy-mid);
  background: #F1F5F9;
  border-color: #CBD5E1;
}

/* PRICE UI BOX */
.pd-price-card {
  background: var(--pd-bg-light);
  border: 1px solid var(--pd-border-light);
  border-left: 4px solid var(--pd-orange);
  padding: 1.2rem 1.5rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.pd-price-row {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}

.pd-price-amount {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--pd-navy-darkest);
  line-height: 1;
}

.pd-price-currency {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--pd-orange);
}

.pd-price-note {
  font-size: 0.82rem;
  color: var(--pd-text-muted);
}

.pd-short-description {
  font-size: 1rem;
  line-height: 1.6;
  color: #334155;
  margin-bottom: 2rem;
}

/* QUANTITY & ACTIONS PURCHASING AREA */
.pd-purchasing-box {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--pd-border-light);
  margin-bottom: 2rem;
}

.pd-qty-wrapper {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.pd-qty-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--pd-navy-deep);
}

.pd-qty-stepper {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--pd-border-light);
  border-radius: 6px;
  background: #FFFFFF;
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
}

.pd-qty-btn {
  background: #FFFFFF;
  border: none;
  width: 40px;
  height: 40px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--pd-navy-deep);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.pd-qty-btn:hover {
  background: var(--pd-bg-light);
  color: var(--pd-orange);
}

.pd-qty-input {
  width: 50px;
  height: 40px;
  border: none;
  border-left: 1px solid var(--pd-border-light);
  border-right: 1px solid var(--pd-border-light);
  text-align: center;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--pd-navy-darkest);
  outline: none;
}

.pd-line-subtotal {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--pd-navy-mid);
}

/* ECOMMERCE ACTION BUTTONS */
.pd-actions-group {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.pd-btn-add-cart {
  background: linear-gradient(135deg, var(--pd-orange) 0%, #D8630B 100%);
  color: #FFFFFF;
  border: none;
  padding: 1.1rem 2rem;
  border-radius: 6px;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  transition: var(--transition-smooth);
  box-shadow: 0 8px 20px var(--pd-orange-glow);
}

.pd-btn-add-cart:hover {
  background: linear-gradient(135deg, #FF8C33 0%, var(--pd-orange) 100%);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(255, 122, 24, 0.4);
}

.pd-actions-row-secondary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}

.pd-btn-buy-now {
  background: var(--pd-navy-deep);
  color: #FFFFFF;
  border: none;
  padding: 0.9rem 1.2rem;
  border-radius: 6px;
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--transition-smooth);
}

.pd-btn-buy-now:hover {
  background: var(--pd-navy-darkest);
  transform: translateY(-2px);
}

.pd-btn-rfq {
  background: #FFFFFF;
  color: var(--pd-navy-deep);
  border: 2px solid var(--pd-navy-deep);
  padding: 0.9rem 1.2rem;
  border-radius: 6px;
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--transition-smooth);
}

.pd-btn-rfq:hover {
  background: rgba(6, 59, 92, 0.05);
  border-color: var(--pd-orange);
  color: var(--pd-orange);
}

/* B2B TRUST STRIP */
.pd-trust-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--pd-bg-light);
  border: 1px solid var(--pd-border-light);
  padding: 0.85rem 1.2rem;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--pd-navy-deep);
}

.pd-trust-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
}

.pd-trust-item i {
  color: var(--pd-orange);
}

/* ==================================================
   3. TABBED PRODUCT SPECIFICATIONS SYSTEM
   ================================================== */
.pd-tabs-section {
  padding: 4rem 0;
  background: var(--pd-bg-light);
  border-top: 1px solid var(--pd-border-light);
  border-bottom: 1px solid var(--pd-border-light);
}

.pd-tabs-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 2px solid var(--pd-border-light);
  margin-bottom: 2rem;
  overflow-x: auto;
}

.pd-tab-btn {
  background: transparent;
  border: none;
  padding: 1rem 1.5rem;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--pd-text-muted);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: var(--transition-smooth);
}

.pd-tab-btn:hover {
  color: var(--pd-navy-darkest);
}

.pd-tab-btn.active {
  color: var(--pd-navy-darkest);
  border-bottom-color: var(--pd-orange);
}

.pd-tab-content-panel {
  display: none;
  background: #FFFFFF;
  border: 1px solid var(--pd-border-light);
  border-radius: 12px;
  padding: 2.5rem;
  box-shadow: var(--shadow-subtle);
}

.pd-tab-content-panel.active {
  display: block;
}

/* Give the combined detail sections distinct, coordinated surfaces. */
#tab-specs { background: #ffffff; border-top: 4px solid var(--pd-orange); }
#tab-desc { background: #fff8ef; border-color: #f3d7b7; }
#tab-app { background: #f0f8f7; border-color: #cbe6df; }
#tab-delivery { background: #f1f6fb; border-color: #cfdeed; }
#tab-rfq { background: #fff3e7; border-color: #ffd3aa; }

/* Product details are displayed as a continuous, readable stack instead of tabs. */
.pd-tab-content-panel.active + .pd-tab-content-panel.active {
  margin-top: 1.25rem;
}

/* Specifications Table */
.pd-specs-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  overflow: hidden;
  border: 1px solid var(--pd-border-light);
  border-radius: 8px;
}

.pd-specs-table thead {
  background: var(--pd-navy-darkest);
  color: #FFFFFF;
}

.pd-specs-table th {
  padding: 0.85rem 1.2rem;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.pd-specs-table th:first-child,
.pd-specs-table td:first-child {
  width: 34%;
}

.pd-specs-table tr {
  border-bottom: 1px solid var(--pd-border-light);
}

.pd-specs-table tr:nth-child(even) {
  background: var(--pd-bg-light);
}

.pd-specs-table td {
  padding: 1rem 1.2rem;
  font-size: 0.95rem;
}

.pd-specs-key {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--pd-navy-deep);
  text-transform: uppercase;
  width: 35%;
}

.pd-specs-val {
  color: var(--pd-text-dark);
  font-weight: 500;
}

.pd-specs-empty {
  padding: 1.25rem !important;
  text-align: center;
  color: var(--pd-text-muted);
  font-style: italic;
}

/* Applications Pill Tags */
.pd-app-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.pd-app-pill {
  background: rgba(6, 59, 92, 0.06);
  border: 1px solid var(--pd-border-light);
  color: var(--pd-navy-deep);
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.pd-app-pill i {
  color: var(--pd-orange);
}

/* ==================================================
   4. IN-PAGE B2B RFQ SECTION ("NEED A LARGER QUANTITY?")
   ================================================== */
.pd-rfq-section {
  padding: 5rem 0;
  background: #FFFFFF;
}

.pd-rfq-card {
  background: var(--pd-navy-darkest);
  color: #FFFFFF;
  border-radius: 16px;
  padding: 3.5rem;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: center;
  box-shadow: var(--shadow-card);
}

.pd-rfq-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: #FFFFFF !important;
  text-transform: uppercase;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.pd-rfq-desc {
  font-size: 1.05rem;
  color: #CBD5E1;
  line-height: 1.6;
}

.pd-rfq-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.pd-input-dark {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  padding: 0.8rem 1rem;
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: #FFFFFF;
  outline: none;
  width: 100%;
}

.pd-input-dark::placeholder {
  color: #94A3B8;
}

.pd-input-dark:focus {
  border-color: var(--pd-orange);
  background: rgba(255, 255, 255, 0.12);
}

/* ==================================================
   5. RELATED & RECENTLY VIEWED PRODUCTS
   ================================================== */
.pd-recommendations-section {
  padding: 5rem 0;
  background: #FFFFFF;
  border-top: 1px solid var(--pd-border-light);
}

.pd-section-heading {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--pd-navy-darkest);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.pd-grid-4col {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.8rem;
}

/* ==================================================
   6. MOBILE STICKY BOTTOM PURCHASE BAR
   ================================================== */
.pd-mobile-sticky-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: #FFFFFF;
  border-top: 2px solid var(--pd-orange);
  box-shadow: 0 -10px 25px rgba(0, 0, 0, 0.15);
  padding: 0.8rem 1.2rem;
  align-items: center;
  justify-content: space-between;
}

.pd-mob-bar-price {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--pd-navy-darkest);
}

.pd-mob-bar-btn {
  background: var(--pd-orange);
  color: #FFFFFF;
  border: none;
  padding: 0.75rem 1.4rem;
  border-radius: 6px;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 800;
  text-transform: uppercase;
  cursor: pointer;
}

/* Fullscreen Gallery Lightbox Modal */
.pd-lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(3, 31, 51, 0.92);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.pd-lightbox-modal.active {
  opacity: 1;
  visibility: visible;
}

.pd-lightbox-img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: 8px;
}

.pd-lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: #FFFFFF;
  font-size: 2rem;
  cursor: pointer;
}

@media (max-width: 992px) {
  .pd-stage-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .pd-gallery-container {
    position: relative;
    top: 0;
  }

  .pd-rfq-card {
    grid-template-columns: 1fr;
    padding: 2rem;
  }

  .pd-mobile-sticky-bar {
    display: flex;
  }
}

@media (max-width: 640px) {
  .pd-actions-row-secondary {
    grid-template-columns: 1fr;
  }

  .pd-rfq-form-grid {
    grid-template-columns: 1fr;
  }

  .pd-specs-table td {
    display: block;
    width: 100%;
  }

  .pd-specs-key {
    padding-bottom: 0.2rem;
  }
}