/* ═══════════════════════════════════════════════════════════════
   COMPONENTS — Buttons, Cards, Sections, Banners, etc.
   ═══════════════════════════════════════════════════════════════ */

/* ═══ BUTTONS ═══ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  border-radius: var(--radius-sm);
  text-decoration: none;
  line-height: 1.5;
}

/* Primary — Copper CTA */
.btn-primary {
  background: var(--color-cta);
  color: #fff;
  border-color: var(--color-cta);
}
.btn-primary:hover {
  background: var(--color-cta-hover);
  border-color: var(--color-cta-hover);
  color: #fff;
}

/* Secondary — Steel blue outlined */
.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.btn-secondary:hover {
  background: var(--color-accent);
  color: #fff;
}

/* Ghost — For dark backgrounds */
.btn-ghost {
  background: transparent;
  color: var(--color-text-inverse);
  border-color: var(--color-border-dark);
}
.btn-ghost:hover {
  border-color: var(--color-text-inverse);
  color: var(--color-text-inverse);
}

/* Large size */
.btn-lg {
  padding: var(--space-4) var(--space-10);
  font-size: var(--text-base);
}

/* Arrow icon inside button */
.btn-arrow::after {
  content: '';
  display: inline-block;
  width: 16px;
  height: 1px;
  background: currentColor;
  position: relative;
  transition: width var(--transition-base);
}
.btn-arrow::after {
  right: 0;
}
.btn-arrow:hover::after {
  width: 24px;
}


/* ═══ SECTION HEADER ═══ */
.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
  display: block;
}

.section-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.section-title--inverse {
  color: var(--color-text-inverse);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 640px;
  margin-inline: auto;
}

.section-title--inverse + .section-subtitle,
.section-title--inverse ~ .section-subtitle {
  color: var(--color-text-inverse-muted);
}

/* Decorative line below header */
.section-header::after {
  content: '';
  display: block;
  width: 48px;
  height: 2px;
  background: var(--color-accent);
  margin: var(--space-6) auto 0;
}


/* ═══ SECTION NUMBER (01, 02, 03) ═══ */
.section-numbered {
  position: relative;
}

.section-numbered::before {
  content: attr(data-number);
  font-family: var(--font-display);
  font-size: 8rem;
  font-weight: 300;
  color: rgba(74, 124, 155, 0.06);
  position: absolute;
  top: var(--space-8);
  right: var(--container-px);
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

.section--dark .section-numbered::before {
  color: rgba(74, 124, 155, 0.1);
}


/* ═══ PAGE BANNER ═══ */
.page-banner {
  position: relative;
  height: 400px;
  display: flex;
  align-items: flex-end;
  background: var(--color-bg-primary);
  overflow: hidden;
  margin-top: 72px; /* compensate for fixed header */
}

.page-banner-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
}

.page-banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(13, 17, 23, 0.3) 0%,
    rgba(13, 17, 23, 0.8) 100%
  );
}

.page-banner-content {
  position: relative;
  z-index: 1;
  width: 100%;
  padding-bottom: var(--space-12);
}

.page-banner-title {
  font-size: var(--text-5xl);
  color: var(--color-text-inverse);
  margin-bottom: var(--space-3);
  letter-spacing: var(--tracking-tight);
}

.page-banner-subtitle {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-accent);
}

/* Banner responsive */
@media (max-width: 767px) {
  .page-banner {
    height: 280px;
  }
  .page-banner-title {
    font-size: var(--text-3xl);
  }
}


/* ═══ BREADCRUMB ═══ */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-inverse-muted);
  margin-bottom: var(--space-4);
}

.breadcrumb a {
  color: var(--color-text-inverse-muted);
  transition: color var(--transition-fast);
}
.breadcrumb a:hover {
  color: var(--color-text-inverse);
}

.breadcrumb-separator {
  opacity: 0.5;
}


/* ═══ BASE CARD ═══ */
.card {
  background: var(--color-surface);
  border: var(--border-thin);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.card-body {
  padding: var(--space-6);
}

.card-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

.card-text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* Card with top accent line on hover */
.card-accent {
  position: relative;
}
.card-accent::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}
.card-accent:hover::before {
  transform: scaleX(1);
}


/* ═══ PRODUCT CARD ═══ */
.card-product {
  position: relative;
  background: var(--color-bg-tertiary);
  border-color: var(--color-border-dark);
}

.card-product .card-number {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  color: rgba(255, 255, 255, 0.08);
  line-height: 1;
  z-index: 1;
  pointer-events: none;
}

.card-product .card-image-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.card-product .card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
  transition: filter var(--transition-base), transform var(--transition-slow);
}

.card-product:hover .card-image {
  filter: saturate(1) contrast(1.1);
  transform: scale(1.03);
}

.card-product .card-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 40%,
    rgba(13, 17, 23, 0.85) 100%
  );
}

.card-product .card-body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1;
}

.card-product .card-title {
  color: var(--color-text-inverse);
  font-size: var(--text-xl);
  margin-bottom: var(--space-1);
}

.card-product .card-subtitle {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-inverse-muted);
}


/* ═══ INDUSTRY CARD ═══ */
.card-industry {
  padding: var(--space-8);
  text-align: center;
  border: var(--border-thin);
  background: var(--color-surface);
  transition: all var(--transition-base);
}

.card-industry:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.card-industry .card-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-5);
  color: var(--color-accent);
}

.card-industry .card-title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.card-industry .card-text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}


/* ═══ STAT CARD ═══ */
.stat-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  text-align: center;
}

.stat-item {
  padding: var(--space-10) var(--space-6);
  position: relative;
}

/* Vertical dividers between stats */
.stat-item + .stat-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 25%;
  bottom: 25%;
  width: 1px;
  background: var(--color-accent);
  opacity: 0.3;
}

.stat-number {
  font-family: var(--font-display);
  font-size: var(--text-6xl);
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-suffix {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-accent);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-inverse-muted);
  margin-top: var(--space-2);
}

/* Stats in light mode */
.stat-bar--light .stat-number,
.stat-bar--light .stat-suffix {
  color: var(--color-accent-dark);
}

.stat-bar--light .stat-label {
  color: var(--color-text-secondary);
}

.stat-bar--light .stat-item + .stat-item::before {
  background: var(--color-accent-dark);
  opacity: 0.2;
}

@media (max-width: 767px) {
  .stat-bar {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-item {
    padding: var(--space-8) var(--space-4);
  }
  .stat-number {
    font-size: var(--text-4xl);
  }
}


/* ═══ SOLUTION CARD (background image + overlay) ═══ */
.card-solution {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: var(--border-dark);
}

.card-solution-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card-solution:hover .card-solution-image {
  transform: scale(1.05);
}

.card-solution-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 30%,
    rgba(13, 17, 23, 0.9) 100%
  );
  transition: background var(--transition-base);
}

.card-solution:hover .card-solution-overlay {
  background: linear-gradient(
    to bottom,
    rgba(74, 124, 155, 0.1) 0%,
    rgba(13, 17, 23, 0.95) 100%
  );
}

.card-solution-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-6);
  z-index: 1;
}

.card-solution-title {
  font-size: var(--text-xl);
  color: var(--color-text-inverse);
  margin-bottom: var(--space-1);
}

.card-solution-eng {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-inverse-muted);
}


/* ═══ PARTNER LOGO ═══ */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-6);
  align-items: center;
}

.partner-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  border: var(--border-subtle);
  height: 100px;
  transition: all var(--transition-base);
}

.partner-logo img {
  max-width: 100%;
  max-height: 60px;
  filter: grayscale(100%) opacity(0.5);
  transition: filter var(--transition-base);
}

.partner-logo:hover img {
  filter: grayscale(0) opacity(1);
}

.partner-logo:hover {
  border-color: var(--color-accent);
}

@media (max-width: 1023px) {
  .partner-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 767px) {
  .partner-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}


/* ═══ CTA SECTION ═══ */
.cta-section {
  text-align: center;
  padding: var(--space-16) var(--container-px);
  background: var(--color-accent-subtle);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.cta-section .cta-title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
}

.cta-section .cta-text {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  max-width: 640px;
  margin-inline: auto;
}

.cta-buttons {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}


/* ═══ DECORATIVE ELEMENTS ═══ */

/* Horizontal thin line with accent dot */
.deco-line {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-6) 0;
}

.deco-line::before {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.deco-line::after {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  flex-shrink: 0;
}

/* In dark sections */
.section--dark .deco-line::before {
  background: var(--color-border-dark);
}


/* ═══ DOWNLOAD TABLE ═══ */
.download-list {
  border: var(--border-thin);
}

.download-item {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: var(--space-6);
  align-items: center;
  padding: var(--space-5) var(--space-6);
  border-bottom: var(--border-subtle);
  transition: background var(--transition-fast);
}

.download-item:last-child {
  border-bottom: none;
}

.download-item:hover {
  background: var(--color-surface-alt);
}

.download-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
}

.download-info h4 {
  font-size: var(--text-base);
  font-weight: 500;
  margin-bottom: var(--space-1);
}

.download-info p {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

@media (max-width: 767px) {
  .download-item {
    grid-template-columns: auto 1fr;
    gap: var(--space-4);
  }
  .download-item .btn {
    grid-column: 1 / -1;
    justify-content: center;
  }
}


/* ═══ JOB LIST ═══ */
.job-list {
  border: var(--border-thin);
}

.job-item {
  border-bottom: var(--border-subtle);
}

.job-item:last-child {
  border-bottom: none;
}

.job-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.job-header:hover {
  background: var(--color-surface-alt);
}

.job-header h4 {
  font-size: var(--text-base);
  font-weight: 500;
}

.job-meta {
  display: flex;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.job-toggle {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-base);
}

.job-item.open .job-toggle {
  transform: rotate(180deg);
}

.job-detail {
  display: none;
  padding: 0 var(--space-6) var(--space-6);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.job-item.open .job-detail {
  display: block;
}


/* ═══ CERTIFICATE GRID ═══ */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.cert-item {
  border: var(--border-thin);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-base);
}

.cert-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.cert-item img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

@media (max-width: 767px) {
  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}


/* ═══ CULTURE CARDS ═══ */
.culture-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-6);
}

.culture-card {
  padding: var(--space-8) var(--space-6);
  border: var(--border-thin);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
}

.culture-card::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.culture-card:hover::before {
  transform: scaleX(1);
}

.culture-card:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.culture-card h4 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}

.culture-card p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

@media (max-width: 1023px) {
  .culture-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 767px) {
  .culture-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}


/* ═══ PRODUCT DETAIL LAYOUT ═══ */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.product-detail-image {
  border: var(--border-thin);
  overflow: hidden;
}

.product-detail-image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.product-detail-info h2 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-2);
}

.product-detail-info .eng-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-6);
}

.product-detail-info .deco-line {
  margin: var(--space-6) 0;
}

.product-detail-info p {
  margin-bottom: var(--space-4);
}

/* Specs table */
.specs-table {
  width: 100%;
  margin-top: var(--space-6);
  border-collapse: collapse;
}

.specs-table th,
.specs-table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: var(--border-subtle);
  font-size: var(--text-sm);
}

.specs-table th {
  font-weight: 500;
  color: var(--color-text-primary);
  width: 30%;
}

.specs-table td {
  color: var(--color-text-secondary);
}

@media (max-width: 1023px) {
  .product-detail {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}


/* ═══ CONTACT LAYOUT ═══ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
}

.contact-info-list {
  list-style: none;
}

.contact-info-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  border-bottom: var(--border-subtle);
}

.contact-info-item:last-child {
  border-bottom: none;
}

.contact-info-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border-radius: var(--radius-md);
  flex-shrink: 0;
  font-size: var(--text-lg);
}

.contact-info-label {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin-bottom: var(--space-1);
}

.contact-info-value {
  font-size: var(--text-base);
  color: var(--color-text-primary);
}

.contact-map {
  border: var(--border-thin);
  overflow: hidden;
  min-height: 400px;
}

.contact-map img,
.contact-map iframe {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 1023px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .contact-map {
    min-height: 300px;
  }
}


/* ═══ RELATED PRODUCTS ═══ */
.related-section {
  padding: var(--space-16) 0;
  border-top: var(--border-thin);
  margin-top: var(--space-16);
}

.related-section h3 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-8);
}


/* ═══ SOLUTION NAV (other solutions links) ═══ */
.solution-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding: var(--space-8) 0;
  border-top: var(--border-thin);
  margin-top: var(--space-12);
}

.solution-nav a {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
  border: var(--border-thin);
  color: var(--color-text-secondary);
  transition: all var(--transition-base);
}

.solution-nav a:hover,
.solution-nav a.active {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-subtle);
}