/* Application Page Styles */

/* Scroll offset for anchor links */
section[id] {
  scroll-margin-top: 100px;
}

/* ========================================
   BREADCRUMB
   ======================================== */

.breadcrumb {
  background: transparent;
  padding: var(--space-xs) 0 var(--space-lg) 0;
}

/* ========================================
   HERO
   ======================================== */

.app-hero {
  background:
    linear-gradient(160deg, rgba(212,212,212,0.62) 0%, rgba(235,235,235,0.56) 75%),
    url('../../background.jpg') left center / cover;
  padding: 0 0 var(--space-2xl) 0;
}

.app-hero__container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
}

@media (min-width: 1024px) {
  .app-hero__container {
    grid-template-columns: 60% 40%;
  }
}

.app-hero__image-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
}

.app-hero__image {
  max-width: 280px;
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

@media (max-width: 1023px) {
  .app-hero__image-wrapper {
    display: none;
  }
}

.app-hero__content h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 2.9vw, 2.7rem);
  font-weight: 800;
  color: var(--color-red-dark);
  margin-bottom: var(--space-sm);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.app-hero__description {
  font-size: var(--font-size-xl);
  font-weight: 500;
  color: var(--color-grey-dark);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-xl);
  max-width: 680px;
}

.app-hero__actions {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: nowrap;
  align-items: center;
}

/* All hero action buttons: ghost at rest, dark red fill on hover */
.app-hero__actions .btn {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-sm);
  border-radius: 0;
  border: none;
  background-color: rgba(255,255,255,0.55);
  color: var(--color-red-dark);
  text-decoration: none;
}

.app-hero__actions .btn:hover {
  background-color: var(--color-red-dark);
  color: var(--color-white);
  text-decoration: none;
  transform: none;
  box-shadow: none;
}

.app-hero__actions .btn--secondary {
  border: none;
}

/* Hero action label */
/* Product chips row in hero */
.app-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.app-hero__chip {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  background-color: rgba(255,255,255,0.65);
  color: var(--color-red-dark);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.app-hero__chip:hover {
  background-color: var(--color-red-dark);
  color: var(--color-white);
  text-decoration: none;
}

.app-hero__actions-label {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-grey-dark);
  white-space: nowrap;
  display: flex;
  align-items: center;
}

/* Secondary buttons: semi-transparent at rest, fill on hover */
.app-hero__actions .btn--secondary {
  background-color: rgba(255,255,255,0.55);
  color: var(--color-red-dark);
}

.app-hero__actions .btn--secondary:hover {
  background-color: var(--color-red-dark);
  color: var(--color-white);
  text-decoration: none;
}

@media (max-width: 767px) {
  .app-hero__content h1 {
    font-size: 1.6rem;
  }

  .app-hero__description {
    font-size: var(--font-size-lg);
  }

  .app-hero__actions {
    flex-direction: column;
  }

  .app-hero__actions .btn {
    text-align: center;
  }
}

/* ========================================
   OVERVIEW
   ======================================== */

.app-overview {
  background-color: var(--color-white);
}

.app-overview__container {
  max-width: 840px;
}

.app-overview__container p {
  font-size: var(--font-size-lg);
  line-height: 1.7;
  color: var(--color-grey-dark);
  margin-bottom: var(--space-lg);
}

.app-overview__container p:last-child {
  margin-bottom: 0;
}

/* ========================================
   PRODUCTS SECTION
   ======================================== */

.app-products {
  background-color: #f4f4f4;
}

.app-products__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: start;
}

@media (min-width: 1024px) {
  .app-products__layout {
    grid-template-columns: 1fr 240px;
    gap: var(--space-2xl);
  }
}

.app-products__images {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  align-items: center;
}

.app-products__product-image {
  width: 100%;
  max-width: 220px;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: block;
}

.app-products__product-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  transition: transform var(--transition-fast);
}

.app-products__product-link:hover {
  transform: translateY(-3px);
  text-decoration: none;
}

.app-products__product-link:hover .app-products__product-label {
  color: var(--color-red);
}

.app-products__product-label {
  text-align: center;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-grey);
  margin-top: var(--space-xs);
}

@media (max-width: 1023px) {
  .app-products__images {
    display: none;
  }
}

.app-products > .container > h2 {
  font-family: var(--font-heading);
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: var(--space-2xl);
}

.app-products__content h3 {
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-red-dark);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--color-red-dark);
}

.app-products__content h3:first-child {
  margin-top: 0;
}

.app-products__content p {
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
  color: var(--color-grey-dark);
  margin-bottom: var(--space-md);
  max-width: 760px;
}

.app-products__content p:last-child {
  margin-bottom: 0;
}

/* ========================================
   CASE HISTORIES SECTION
   ======================================== */

.app-case-histories {
  background-color: #fff5f5;
}

.app-case-histories > .container > h2 {
  font-family: var(--font-heading);
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: var(--space-xl);
}

.app-case-histories__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.app-case-histories__list li {
  margin: 0;
  padding-left: var(--space-sm);
  border-left: 3px solid var(--color-red);
  transition: border-color var(--transition-fast);
}

.app-case-histories__list li:hover {
  border-left-color: var(--color-red-dark);
}

.app-case-histories__list a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-grey-dark);
  font-size: var(--font-size-md);
  font-weight: 500;
  line-height: 1.4;
  transition: color var(--transition-fast);
}

.app-case-histories__list a:hover {
  color: var(--color-red-dark);
  text-decoration: none;
}

/* Informational text fallback (EGCS, MicroNOx) */
.app-case-histories__note {
  font-size: var(--font-size-md);
  color: var(--color-grey-dark);
  font-style: italic;
}

/* ch-entry cards (shared with case-histories-index) */
.app-case-histories .ch-entry {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-grey-light);
}

.app-case-histories .ch-entry:last-child {
  border-bottom: none;
}

.app-case-histories .ch-entry__link {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-sm);
  color: var(--color-black);
  text-decoration: none;
  margin-bottom: 0.3rem;
}

.app-case-histories .ch-entry__link:hover .ch-entry__title {
  color: var(--color-red-dark);
  text-decoration: underline;
}

.app-case-histories .ch-entry__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-md);
  font-weight: 600;
  line-height: 1.4;
}

.app-case-histories .ch-entry__badge {
  display: inline-block;
  flex-shrink: 0;
  padding: 0.1rem 0.4rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  position: relative;
  top: -1px;
}

.app-case-histories .ch-entry__badge--pdf {
  background-color: var(--color-grey-light);
  color: var(--color-grey-dark);
}

.app-case-histories .ch-entry__badge--article {
  background-color: #e8f0ff;
  color: #2a4a9f;
}

.app-case-histories .ch-entry__tagline {
  font-size: var(--font-size-sm);
  color: var(--color-grey);
  line-height: 1.5;
  margin: 0 0 0.5rem;
  max-width: 640px;
}

.app-case-histories .ch-entry__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 0.4rem;
}

.app-case-histories .ch-entry__chip {
  display: inline-block;
  padding: 2px 7px;
  background: rgba(139, 0, 0, 0.04);
  color: var(--color-red-dark);
  border: 1px solid rgba(139, 0, 0, 0.35);
  font-size: 0.7rem;
  font-weight: 500;
  border-radius: 2px;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.app-case-histories .ch-entry__chip:hover {
  background: var(--color-red-dark);
  color: var(--color-white);
  border-color: var(--color-red-dark);
  text-decoration: none;
}

/* ========================================
   RELATED PRODUCTS SECTION
   ======================================== */

.app-related-products {
  background-color: var(--color-white);
}

.app-related-products > .container > h2 {
  font-family: var(--font-heading);
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: var(--space-xl);
}

.app-related-products__cards {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.app-related-products__card {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-sm) var(--space-lg);
  background-color: var(--color-red-dark);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--font-size-md);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  line-height: 1.3;
}

.app-related-products__card:hover {
  background-color: var(--color-red);
  color: var(--color-white);
  text-decoration: none;
  transform: translateY(-2px);
}

.app-related-products__card-sub {
  font-size: var(--font-size-sm);
  font-weight: 400;
  opacity: 0.85;
  margin-top: 0.15rem;
}

.app-products__content h3 a {
  color: var(--color-red-dark);
  font-weight: 700;
  text-decoration: none;
}

.app-products__content h3 a:hover {
  color: var(--color-red);
  text-decoration: none;
}