/* ==========================================================================
   css/global.css — global layout, typography, shared components
   Mobile-first. BEM methodology.
   ========================================================================== */

body {
  background-color: var(--color-bg-primary);
  color: var(--color-text-main);
  font-family: var(--font-family-base);
  font-size: var(--fs-base);
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

main {
  display: block;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 999;
  padding: 0.75rem 1.25rem;
  background: var(--color-heading-gold);
  color: var(--color-text-on-light);
  border-radius: var(--radius-card);
  font-weight: var(--fw-semibold);
  transition: top var(--transition-base);
}

.skip-link:focus {
  top: 1rem;
}

/* Headings */
h1, .h1 {
  font-size: var(--fs-h1);
  color: var(--color-white);
}

h2, .h2 {
  font-size: var(--fs-h2);
  color: var(--color-heading-gold);
}

h3, .h3 {
  font-size: var(--fs-h3);
  color: var(--color-white);
}

p {
  margin-bottom: var(--space-paragraph);
}

p:last-child {
  margin-bottom: 0;
}

a {
  transition: color var(--transition-base);
}

strong {
  color: var(--color-white);
  font-weight: var(--fw-semibold);
}

/* Contextual in-text links (internal linking) */
.content-section__body a:not(.btn),
.section a:not(.btn) {
  color: var(--color-heading-gold);
  font-weight: var(--fw-semibold);
  text-decoration: underline;
  text-decoration-color: rgba(247, 200, 121, 0.4);
  text-underline-offset: 3px;
  transition: color var(--transition-base), text-decoration-color var(--transition-base);
}

.content-section__body a:not(.btn):hover,
.content-section__body a:not(.btn):focus-visible,
.section a:not(.btn):hover,
.section a:not(.btn):focus-visible {
  color: var(--color-accent-light);
  text-decoration-color: currentColor;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.75rem;
  border-radius: var(--radius-card);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-base);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background: var(--gradient-accent-btn);
  color: var(--color-text-on-light);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.btn--secondary {
  background: transparent;
  color: var(--color-white);
  border: 1px solid var(--color-btn-secondary-border);
}

.btn--secondary:hover,
.btn--secondary:focus-visible {
  background: var(--color-btn-secondary-border);
  color: var(--color-text-on-light);
}

@media (prefers-reduced-motion: reduce) {
  .btn {
    transition: none;
  }
}

/* Sections */
.section {
  padding-block: calc(var(--space-section) / 2);
}

.section__title {
  margin-bottom: var(--space-h2-text);
}

.section__intro {
  max-width: 68ch;
  margin-bottom: var(--space-h2-text);
}

/* Content section (repeatable H2 + text + image block) */
.content-section {
  padding-block: calc(var(--space-section) / 2);
  border-top: 1px solid rgba(245, 241, 234, 0.06);
}

.content-section__title {
  margin-bottom: var(--space-h2-text);
}

.content-section__intro {
  margin-bottom: var(--space-h2-text);
}

.content-section__body {
  display: grid;
  gap: var(--space-card-gap);
}

.content-section__body h3 {
  margin-bottom: var(--space-h3-text);
}

.content-section__body h3:not(:first-child) {
  margin-top: var(--space-card-gap);
}

.content-section--with-media .content-section__grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-card-gap);
}

.content-section__media {
  width: 100%;
  border-radius: var(--radius-card);
  overflow: hidden;
}

.content-section__media img {
  display: block;
  width: 100%;
  height: auto;
}

.content-section__cta {
  margin-top: var(--space-card-gap);
}

.content-section__downloads {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-top: var(--space-card-gap);
}

.content-section__downloads .btn {
  width: 100%;
}

.content-section__downloads .btn img {
  flex-shrink: 0;
}

@media (min-width: 480px) {
  .content-section__downloads {
    grid-template-columns: repeat(2, minmax(0, 12rem));
  }
}

/* Lists inside prose */
.prose-list {
  display: grid;
  gap: 0.5rem;
  margin-bottom: var(--space-paragraph);
  padding-left: 1.25rem;
}

.prose-list li {
  list-style: disc;
  color: var(--color-text-main);
}

.prose-list--ordered li {
  list-style: decimal;
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  margin-bottom: var(--space-paragraph);
  border-radius: var(--radius-card);
  border: 1px solid rgba(245, 241, 234, 0.08);
}

.data-table {
  min-width: 100%;
  background: var(--color-bg-dark);
}

.data-table caption {
  caption-side: top;
  text-align: left;
  padding: 1rem 1.25rem 0;
  color: var(--color-heading-gold);
  font-weight: var(--fw-semibold);
}

.data-table th,
.data-table td {
  padding: 0.85rem 1.25rem;
  text-align: left;
  font-size: var(--fs-small);
  border-bottom: 1px solid rgba(245, 241, 234, 0.08);
}

.data-table th {
  color: var(--color-white);
  font-weight: var(--fw-semibold);
  background: rgba(255, 179, 117, 0.08);
}

.data-table tr:last-child td {
  border-bottom: none;
}

/* Cards grid generic */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-card-gap);
}

@media (min-width: 480px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .card-grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.card {
  background: var(--color-bg-dark);
  border-radius: var(--radius-card);
  padding: var(--space-card-padding);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.card__image {
  border-radius: var(--radius-card);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--color-bg-primary);
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.card__title {
  font-size: var(--fs-h3);
  color: var(--color-white);
}

.card__text {
  font-size: var(--fs-small);
  flex-grow: 1;
}

/* Spec table small variant for app page */
.spec-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-card-gap);
}

@media (min-width: 768px) {
  .spec-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.spec-card {
  background: var(--color-bg-dark);
  border-radius: var(--radius-card);
  padding: var(--space-card-padding);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.spec-card__icon {
  width: 3rem;
  height: 3rem;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-size: var(--fs-small);
  color: var(--color-text-main);
  margin-bottom: 1rem;
}

.breadcrumb a {
  color: var(--color-text-main);
}

.breadcrumb a:hover {
  color: var(--color-heading-gold);
}

.breadcrumb__current {
  color: var(--color-heading-gold);
}

/* Utility */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.text-center {
  text-align: center;
}

/* Fade-in animation hook (JS adds is-visible) */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* 404 page */
.error-page {
  padding-block: var(--space-section);
  text-align: center;
}

.error-page__code {
  font-size: clamp(4rem, 8vw + 2rem, 9rem);
  color: var(--color-heading-gold);
  font-weight: var(--fw-extrabold);
  line-height: 1;
}

.error-page__title {
  margin-top: 1rem;
}

.error-page__text {
  max-width: 50ch;
  margin-inline: auto;
  margin-top: 1rem;
}

.error-page__cta {
  margin-top: 1.5rem;
}