/* ==========================================================================
   KDK VIETNAM — 4. PAGES MODULE (Hero, Tech Dark, Product Detail, Solutions, About)
   ========================================================================== */

/* PAGE HEADER & BREADCRUMBS */
.page-header {
  padding: 75px 0;
  background: var(--dark-surface);
  color: var(--white);
  border-bottom: 1px solid var(--dark-border);
  position: relative;
  overflow: hidden;
}

.page-header h1 {
  color: var(--white) !important;
  font-size: clamp(28px, 4vw, 42px);
  margin-bottom: 12px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.95);
}

.breadcrumb a:hover {
  color: var(--accent-pink);
}

/* HERO SECTION */
.hero {
  padding: 125px 0 105px;
  background: var(--grad-dark);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--primary-glow) 0%, rgba(0,0,0,0) 70%);
  pointer-events: none;
}

.hero-content { max-width: 840px; }

.hero h1 {
  font-size: clamp(34px, 5.5vw, 56px);
  color: var(--white) !important;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
}

.hero h1 span {
  color: var(--accent-pink) !important;
  font-style: italic;
}

.hero p {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.9) !important;
  margin-bottom: 40px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 54px;
}

.hero-stats {
  display: flex;
  gap: 48px;
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 32px;
  flex-wrap: wrap;
}

.stat-item {
  border-left: 3px solid var(--primary);
  padding-left: 16px;
}

.stat-num {
  font-size: 34px;
  font-weight: 700;
  color: var(--accent-pink);
}

.stat-label {
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255,255,255,0.85);
}

/* TECH DARK SECTIONS (Crisp high contrast guaranteed) */
.section.tech-dark,
.tech-dark-banner {
  background: var(--grad-dark) !important;
  color: var(--white) !important;
  border-top: 1px solid var(--dark-border);
  border-bottom: 1px solid var(--dark-border);
  position: relative;
}

.section.tech-dark .section-title,
.section.tech-dark h1,
.section.tech-dark h2,
.section.tech-dark h3,
.section.tech-dark h4,
.tech-dark-banner h1,
.tech-dark-banner h2,
.tech-dark-banner h3 {
  color: var(--white) !important;
}

.section.tech-dark p,
.section.tech-dark li,
.tech-dark-banner p,
.tech-dark-banner li {
  color: rgba(255, 255, 255, 0.92) !important;
}

.section.tech-dark strong {
  color: var(--accent-pink) !important;
}

.section.tech-dark .card-box {
  background: var(--dark-card) !important;
  border-color: var(--dark-border) !important;
  color: var(--white) !important;
}

/* ==========================================================================
   SOLUTIONS PAGE SLEEK CARDS (BALANCED EQUAL HEIGHT 2-COLUMN SHOWCASE)
   ========================================================================== */
.solution-card {
  padding: 32px 36px !important;
  border-radius: var(--radius-xl) !important;
  border: 1px solid rgba(255, 255, 255, 0.12) !important;
  background: var(--dark-card) !important;
  box-shadow: 0 15px 35px rgba(0,0,0,0.4) !important;
}

.solution-card .grid2 {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 36px;
  align-items: stretch;
}

.solution-media-col {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.solution-heading-box {
  margin-bottom: 14px;
}

.solution-media-box {
  width: 100%;
  flex: 1;
  min-height: 250px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
  border: 1px solid rgba(255,255,255,0.1);
  background: #0f1218;
}

.solution-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.4s ease;
  display: block;
}

.solution-card:hover .solution-img {
  transform: scale(1.03);
}

.solution-details {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.solution-title {
  font-size: 22px !important;
  color: var(--white) !important;
  margin-top: 8px;
  margin-bottom: 0;
  line-height: 1.35;
}

.solution-desc {
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.88) !important;
  margin-bottom: 16px;
}

.solution-desc p {
  margin-bottom: 8px;
}

.solution-desc p:last-child {
  margin-bottom: 0;
}

.solution-specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
  margin-bottom: 16px;
  background: rgba(255, 255, 255, 0.03);
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.spec-bullet {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.35;
}

.spec-bullet i {
  color: var(--primary);
  font-size: 13px;
  margin-top: 2px;
  flex-shrink: 0;
}

.solution-footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 4px;
}

.solution-note-inline {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.4;
  flex: 1;
}

.solution-note-inline strong {
  color: var(--accent-pink);
}

@media (max-width: 991px) {
  .solution-card .grid2 {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .solution-media-box {
    height: 260px;
  }
  .solution-specs-grid {
    grid-template-columns: 1fr;
  }
  .solution-footer-row {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* PRODUCT & BLOG DETAIL RICH STYLING */
.product-detail-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
}

.product-gallery-box,
.product-summary-box {
  min-width: 0;
}

.main-image-wrap {
  width: 100%;
  height: 420px;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 20px;
  border: 1px solid var(--border-light);
}

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

.gallery-thumbs {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  overflow-x: auto;
}

.gallery-thumbs img {
  width: 76px;
  height: 76px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
}

.gallery-thumbs img.active {
  border-color: var(--primary);
}

.product-summary-box {
  display: flex;
  flex-direction: column;
}

.product-title-detail {
  font-size: 30px;
  margin-bottom: 12px;
}

.price-tag-wrap {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 20px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.html-entry-content {
  line-height: 1.85;
  color: var(--text-body);
}

.html-entry-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: 18px 0;
}

.html-entry-content h2, .html-entry-content h3 {
  margin-top: 28px;
  margin-bottom: 14px;
}

/* ==========================================================================
   PROJECTS PAGE STYLING
   ========================================================================== */
.project-filter-btn {
  padding: 10px 22px;
  border-radius: 8px;
  border: 1px solid var(--border-light, #e2e8f0);
  background: var(--white, #ffffff);
  color: var(--text-dark, #1e293b);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.project-filter-btn:hover,
.project-filter-btn.active {
  background: var(--primary, #e60012) !important;
  color: #ffffff !important;
  border-color: var(--primary, #e60012) !important;
  box-shadow: 0 4px 14px rgba(230,0,18,0.3);
}

.project-card-item {
  background: var(--white, #ffffff);
  border-radius: 16px;
  border: 1px solid var(--border-light, #e2e8f0);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.06);
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(0,0,0,0.12);
}

.project-card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.5s ease;
  display: block;
}

.project-card-item:hover .project-card-img {
  transform: scale(1.06);
}

.project-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-card-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary, #e60012);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.project-card-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-dark, #0f172a);
  margin-bottom: 10px;
  line-height: 1.4;
}

.project-card-desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-muted, #64748b);
  margin-bottom: 20px;
  flex-grow: 1;
}

.project-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-light, #f1f5f9);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dark, #334155);
}

/* ==========================================================================
   CERTIFICATES, PARTNERS & VERTICAL THUMBNAILS ENHANCEMENTS
   ========================================================================== */

/* CERTIFICATE CARDS */
.cert-card-box {
  background: var(--white, #ffffff);
  border-radius: 16px;
  border: 1px solid var(--border-light, #e2e8f0);
  box-shadow: 0 10px 30px rgba(0,0,0,0.06);
  padding: 24px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cert-card-box:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 35px rgba(0,0,0,0.1);
}

.cert-img-wrap {
  height: 340px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.cert-img-wrap img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 6px;
}

/* PARTNER BRAND LOGO CARDS */
.partner-logo-grid {
  display: flex;
  gap: 24px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 30px;
}

.partner-logo-card {
  background: var(--white, #ffffff);
  border-radius: 16px;
  border: 1px solid var(--border-light, #e2e8f0);
  box-shadow: 0 6px 20px rgba(0,0,0,0.04);
  padding: 20px 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 200px;
  height: 110px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.partner-logo-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0,0,0,0.08);
  border-color: var(--primary, #e60012);
}

.partner-logo-card img {
  max-width: 160px;
  max-height: 48px;
  object-fit: contain;
  display: block;
}

.partner-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted, #64748b);
  margin-top: 6px;
}

/* VERTICAL RECTANGLE THUMBNAIL BOX FOR ARTICLE / NEWS LIST */
.blog-card-img-wrap {
  width: 100%;
  height: 280px;
  background: #f8fafc;
  border-bottom: 1px solid var(--border-light, #e2e8f0);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.blog-card-img-wrap img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.4s ease;
}

.blog-card:hover .blog-card-img-wrap img {
  transform: scale(1.06);
}

/* SECTION SPACING & MARGIN FIXES */
.text-center.margin-bottom-40,
.text-center.margin-bottom-50 {
  margin-bottom: 48px !important;
}

.section-title {
  line-height: 1.4 !important;
  margin-bottom: 16px !important;
}

.section-title.center {
  margin-bottom: 16px !important;
}

.muted {
  line-height: 1.7 !important;
  margin-top: 10px !important;
}