/**
 * global.css — Base typography, layout primitives, shared components
 * Mobile-first. BEM naming. No !important, no inline styles, no magic numbers.
 */

/* ---------- Base ---------- */
html {
  background-color: var(--color-bg-primary);
}

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

main {
  display: block;
  padding-bottom: var(--main-bottom-padding);
}

h1, h2, h3 {
  color: var(--color-white);
  font-weight: var(--fw-bold);
  line-height: var(--lh-h2);
}

h1 {
  font-size: var(--fs-h1);
  font-weight: var(--fw-extrabold);
}

h2 {
  font-size: var(--fs-h2);
  color: var(--color-accent-green);
  position: relative;
  padding-bottom: 0.75rem;
  margin-top: var(--space-h2-margin-top);
  margin-bottom: var(--space-h2-margin-bottom);
}

h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 3.5rem;
  height: 3px;
  background-color: var(--color-accent-green);
  border-radius: var(--radius-badge);
}

h3 {
  font-size: var(--fs-h3);
  color: var(--color-white);
  margin-bottom: var(--space-h3-text);
}

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

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

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

/* ---------- In-copy contextual links (internal linking) ---------- */
.content-link {
  color: var(--color-accent-green);
  font-weight: var(--fw-semibold);
  text-decoration: underline;
  text-decoration-color: rgba(155, 232, 106, 0.45);
  text-underline-offset: 0.15em;
}

.content-link:hover {
  color: var(--color-white);
  text-decoration-color: currentColor;
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  top: -3rem;
  left: 0.5rem;
  background-color: var(--color-accent-green);
  color: var(--color-btn-dark-text);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-btn);
  z-index: 2000;
  font-weight: var(--fw-semibold);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0.5rem;
}

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

/* ---------- Section ---------- */
.section {
  padding-block: var(--space-section);
}

.section--tight {
  padding-block-start: 0;
}

.section__intro {
  width: 100%;
  margin-bottom: var(--space-h2-text);
}

.section__lead {
  color: var(--color-text-primary);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.75rem;
  border-radius: var(--radius-btn);
  font-weight: var(--fw-semibold);
  font-size: 1rem;
  white-space: nowrap;
  transition: transform var(--transition-fast), filter var(--transition-fast), background-color var(--transition-fast);
}

.btn:hover {
  filter: brightness(1.08);
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  background: var(--color-btn-accent);
  color: var(--color-btn-dark-text);
}

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

.btn--secondary:hover {
  border-color: var(--color-accent-green);
}

.btn--cta-bright {
  background: linear-gradient(180deg, #7ed957 0%, #5cb838 100%);
  color: #121212;
  border: none;
  border-radius: 1.125rem;
}

.btn--block {
  width: 100%;
}

.btn--center-wrap {
  display: flex;
  justify-content: center;
  margin-block: var(--space-section);
}

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

.breadcrumb__item a {
  color: var(--color-text-primary);
}

.breadcrumb__item a:hover {
  color: var(--color-accent-green);
}

.breadcrumb__item[aria-current='page'] {
  color: var(--color-accent-green);
}

.breadcrumb__sep {
  color: var(--color-btn-secondary-border);
}

/* ---------- Card ---------- */
.card {
  background-color: var(--color-card-bg);
  border-radius: var(--radius-card);
  padding: var(--space-card-padding);
}

/* ---------- Content section (H2 + text [+ image]) ---------- */
.content-section {
  padding-block: 0;
}

.content-section__image-wrap {
  margin-bottom: var(--space-h2-text);
  border-radius: var(--radius-card);
  overflow: hidden;
  background-color: var(--color-bg-dark);
}

.content-section__image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
}

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

.content-section__body h3:first-child {
  margin-top: 0;
}

.content-section--with-media {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-h2-text);
}

@media (min-width: 64rem) {
  .content-section--with-media {
    grid-template-columns: minmax(0, 1fr);
  }

  .content-section--with-media .content-section__image-wrap {
    max-width: 42.5rem;
    margin-inline: auto;
  }
}

/* ---------- Data table ---------- */
.data-table-wrap {
  overflow-x: auto;
  margin-block: var(--space-h3-text) var(--space-paragraph);
  border-radius: var(--radius-btn);
}

.data-table {
  min-width: 100%;
  background-color: var(--color-card-bg);
  border-radius: var(--radius-btn);
  overflow: hidden;
}

.data-table caption {
  text-align: left;
  padding: 0.75rem 1rem;
  font-weight: var(--fw-semibold);
  color: var(--color-white);
  background-color: var(--color-bg-dark);
}

.data-table th,
.data-table td {
  text-align: left;
  padding: 0.85rem 1.1rem;
  font-size: var(--fs-small);
  border-bottom: 1px solid rgba(241, 244, 244, 0.06);
}

.data-table th {
  color: var(--color-accent-green);
  font-weight: var(--fw-semibold);
  background-color: var(--color-bg-dark);
}

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

/* ---------- Lists ---------- */
ul.styled-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-block: var(--space-h3-text) var(--space-paragraph);
}

.styled-list__item {
  position: relative;
  padding-left: 1.5rem;
  color: var(--color-text-primary);
}

.styled-list__item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: var(--radius-badge);
  background-color: var(--color-accent-green);
}

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

@media (min-width: 30rem) {
  .grid--2-up {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 48rem) {
  .grid--3-up {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 64rem) {
  .grid--4-up {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ---------- Spec cards (Android/iOS, etc.) ---------- */
.spec-card {
  background-color: var(--color-card-bg);
  border-radius: var(--radius-card);
  padding: var(--space-card-padding);
  display: flex;
  flex-direction: column;
  gap: var(--space-h3-text);
}

.spec-card__icon {
  width: 3.25rem;
  height: 3.25rem;
  object-fit: contain;
}

.spec-card__title {
  margin: 0;
}

/* ---------- Fade-in (opt-in animation target) ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.is-visible {
  opacity: 1;
  transform: none;
}

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

/* ---------- Bonus card (promo grid) ---------- */
.bonus-card {
  background-color: var(--color-card-bg);
  border-radius: var(--radius-card);
  padding: var(--space-card-padding);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.bonus-card__image-wrap {
  border-radius: calc(var(--radius-card) - 0.6rem);
  overflow: hidden;
  background-color: var(--color-bg-dark);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.bonus-card__title {
  margin: 0;
}

.bonus-card__text {
  color: var(--color-text-primary);
  font-size: 0.875rem;
  flex-grow: 1;
}

/* ---------- Spec table row grid (Android/iOS columns) ---------- */
.two-col-spec {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-card-gap);
}

@media (min-width: 56rem) {
  .two-col-spec {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---------- 404 ---------- */
.error-404 {
  padding-block: calc(var(--space-section) * 2);
}

.error-404__code {
  font-size: clamp(4rem, 3rem + 5vw, 8rem);
  font-weight: var(--fw-extrabold);
  color: var(--color-accent-green);
  line-height: 1;
  margin-bottom: 1rem;
}

.error-404__title {
  margin-bottom: 1rem;
}

.error-404__subtitle {
  max-width: 34rem;
  margin-inline: auto;
  margin-bottom: 2rem;
}

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

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