/* ==========================================================================
   03-hero.css — Sekce B: úvodní hero
   Desktop: text vlevo, obrazová kompozice vpravo (absolutně umístěná,
   s plynulým přechodem do světlého pozadí). Mobil: obraz pod textem.
   ========================================================================== */

.pk-hero {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: var(--pk-color-light);
  background-image: linear-gradient(180deg, #F1F6F9 0%, var(--pk-color-light) 100%);
}

.pk-hero__inner {
  position: relative;
  z-index: 2;
}

/* --- Obrazová část ------------------------------------------------------- */

.pk-hero__media {
  position: relative;
  order: 2;
  aspect-ratio: 16 / 10;
}

.pk-hero__media picture, .pk-hero__image {
  display: block;
  width: 100%;
  height: 100%;
}

.pk-hero__image {
  object-fit: cover;
  object-position: 72% center;
}

/* Přechod mezi světlým pozadím a fotografií */

.pk-hero__media::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(180deg, var(--pk-color-light) 0%, rgba(234, 241, 245, 0) 22%);
}

/* --- Text ---------------------------------------------------------------- */

.pk-hero__content {
  padding-top: 2.5rem;
  padding-bottom: 1.5rem;
}

.pk-hero__title {
  position: relative;
  margin: 0 0 1.25rem;
  padding-top: 1.75rem;
  font-family: var(--pk-font-serif);
  font-size: var(--pk-fs-hero);
  font-weight: 500;
  line-height: var(--pk-lh-tight);
  letter-spacing: -0.022em;
  color: var(--pk-color-text);
}

/* Krátká dekorativní linka nad nadpisem (dle návrhu) */

.pk-hero__title::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 52px;
  height: 1px;
  background: #C9D5DD;
}

.pk-hero__title-line {
  display: block;
}

.pk-hero__title-line--muted {
  color: var(--pk-color-muted-heading);
}

.pk-hero__description {
  max-width: 31rem;
  margin: 0 0 1.75rem;
  font-size: var(--pk-fs-hero-lead);
  line-height: 1.62;
  color: var(--pk-color-text-body);
}

.pk-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-bottom: 2.25rem;
}

.pk-hero__actions .pk-btn {
  min-width: 13.25rem;
}

/* --- Kategorie ----------------------------------------------------------- */

.pk-hero__categories {
  max-width: 34rem;
  margin: 0;
  row-gap: 1rem;
}

.pk-hero__category-link {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  height: 100%;
  padding-right: 0.75rem;
  color: inherit;
  text-decoration: none;
}

.pk-hero__category-icon {
  flex: 0 0 auto;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--pk-color-secondary);
  transition: color var(--pk-transition);
}

.pk-hero__category-text {
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--pk-color-text-secondary);
}

.pk-hero__category-text strong {
  display: block;
  margin-bottom: 0.3rem;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--pk-color-primary);
}

.pk-hero__category-link:hover .pk-hero__category-icon, .pk-hero__category-link:hover strong {
  color: var(--pk-color-secondary);
}

/* --- Tablet -------------------------------------------------------------- */

@media (min-width: 768px) {
  .pk-hero__categories {
    max-width: 30rem;
  }
}

@media (min-width: 768px) {
  .pk-hero__media {
    aspect-ratio: 16 / 8;
  }
}

/* --- Desktop: obraz vpravo vedle textu ----------------------------------- */

@media (min-width: 992px) {
  .pk-hero {
    min-height: 530px;
  }
}

/* Šířka obrazu se odvozuje z výšky hero (poměr stran obrázku 1672 × 1091),
       na užších obrazovkách je omezena a obraz se ořízne zleva. */

@media (min-width: 992px) {
  .pk-hero__media {
    position: absolute;
    top: 0;
    height: 100%;
    right: max(0px, calc((100% - 1720px) / 2));
    z-index: 1;
    aspect-ratio: 1672 / 1091;
    max-width: 60%;
  }
}

@media (min-width: 992px) {
  .pk-hero__image {
    object-position: right center;
  }
}

@media (min-width: 992px) {
  .pk-hero__media::before {
    background: linear-gradient(90deg, var(--pk-color-light) 0%, rgba(234, 241, 245, 0.85) 9%, rgba(234, 241, 245, 0.35) 18%, rgba(234, 241, 245, 0) 27%);
  }
}

@media (min-width: 992px) {
  .pk-hero__content {
    padding-top: 2.25rem;
    padding-bottom: 2rem;
  }
}

@media (min-width: 992px) {
  .pk-hero__title {
    margin-bottom: 1.1rem;
    padding-top: 1.4rem;
  }
}

@media (min-width: 992px) {
  .pk-hero__description {
    max-width: 28.75rem;
    margin-bottom: 1.6rem;
  }
}

@media (min-width: 992px) {
  .pk-hero__actions {
    margin-bottom: 2rem;
  }
}

@media (min-width: 992px) {
  .pk-hero__categories {
    max-width: 39rem;
  }
}

@media (min-width: 992px) {
  .pk-hero__category-link {
    gap: 0.6rem;
    padding-right: 0.5rem;
  }
}

@media (min-width: 992px) {
  .pk-hero__category + .pk-hero__category .pk-hero__category-link {
    padding-left: 0.9rem;
    border-left: 1px solid #D3DEE5;
  }
}

@media (min-width: 992px) {
  .pk-hero__category-icon {
    font-size: 1.45rem;
  }
}

/* Menší notebooky (992–1399 px): obraz se zmenší a ukotví dole vpravo,
   aby knihy nezasahovaly pod text; horní hrana se jemně rozplyne. */

@media (min-width: 992px) and (max-width: 1399.98px) {
  .pk-hero__media {
    max-width: 52%;
  }
}

@media (min-width: 992px) and (max-width: 1399.98px) {
  .pk-hero__image {
    object-fit: contain;
    object-position: right bottom;
    -webkit-mask-image: linear-gradient(180deg, transparent 22%, #000 48%);
    mask-image: linear-gradient(180deg, transparent 22%, #000 48%);
  }
}

/* Do 1200 px je obraz nižší než hero – box se přizpůsobí obrazu a maska působí na jeho horní hranu */

@media (min-width: 992px) and (max-width: 1199.98px) {
  .pk-hero__media {
    top: auto;
    bottom: 0;
    height: auto;
    width: 52%;
  }
}

@media (min-width: 992px) and (max-width: 1199.98px) {
  .pk-hero__image {
    -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 38%);
    mask-image: linear-gradient(180deg, transparent 0%, #000 38%);
  }
}

@media (min-width: 1400px) {
  .pk-hero__media {
    max-width: 64%;
  }
}

/* Velké monitory: obraz zůstává u obsahu, pravý okraj se jemně rozplyne */

@media (min-width: 1721px) {
  .pk-hero__media {
    -webkit-mask-image: linear-gradient(90deg, #000 88%, transparent 100%);
    mask-image: linear-gradient(90deg, #000 88%, transparent 100%);
  }
}

/* --- Malé mobily --------------------------------------------------------- */

@media (max-width: 575.98px) {
  .pk-hero__actions .pk-btn {
    flex: 1 1 100%;
    min-width: 0;
  }
}