@layer components {
  /* ============================================
     HEADER (COMP-01)
     ============================================ */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(245, 245, 247, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 0 var(--container-padding);
  }

  .site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-max);
    margin-inline: auto;
    height: 100%;
  }

  .site-header__name {
    font-size: var(--text-body);
    font-weight: var(--weight-semibold);
    color: var(--color-text);
    text-decoration: none;
  }

  .site-header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
  }

  .site-header__nav a {
    font-size: var(--text-sm);
    font-weight: var(--weight-regular);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
  }

  .site-header__nav a:hover,
  .site-header__nav a.active {
    color: var(--color-accent);
  }

  /* Dark mode header background */
  @media (prefers-color-scheme: dark) {
    .site-header {
      background: rgba(29, 29, 31, 0.72);
    }
  }

  /* ============================================
     FOOTER (COMP-02)
     ============================================ */
  .site-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--space-xl) var(--container-padding);
  }

  .site-footer__inner {
    max-width: var(--container-max);
    margin-inline: auto;
    text-align: center;
  }

  .site-footer__nav {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-md);
  }

  .site-footer__nav a {
    font-size: var(--text-sm);
    font-weight: var(--weight-regular);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
  }

  .site-footer__nav a:hover,
  .site-footer__nav a:focus {
    color: var(--color-accent);
  }

  .site-footer__divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--space-md) 0;
  }

  .site-footer__copyright,
  .site-footer__legal,
  .site-footer__attribution {
    font-size: var(--text-sm);
    line-height: var(--leading-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-sm);
  }

  .site-footer__legal a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
  }

  .site-footer__legal a:hover,
  .site-footer__legal a:focus {
    color: var(--color-accent);
  }

  /* ============================================
     LANGUAGE SWITCHER (I18N-03)
     ============================================ */
  .lang-switcher {
    position: relative;
  }

  .lang-switcher__trigger {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text);
    font-size: var(--text-sm);
    font-weight: var(--weight-regular);
    padding: var(--space-sm);
    min-height: 44px;
    min-width: 44px;
  }

  .lang-switcher__trigger:hover {
    color: var(--color-accent);
  }

  .lang-switcher__icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
  }

  .lang-switcher__dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
    padding: var(--space-xs);
    min-width: 160px;
    max-height: 320px;
    overflow-y: auto;
    opacity: 0;
    transform: translateY(-4px);
    pointer-events: none;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    z-index: 1001;
  }

  .lang-switcher__dropdown.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  /* Dark mode dropdown shadow */
  @media (prefers-color-scheme: dark) {
    .lang-switcher__dropdown {
      box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    }
  }

  .lang-switcher__option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    font-weight: var(--weight-regular);
    color: var(--color-text);
    transition: background var(--transition-fast);
  }

  .lang-switcher__option:hover,
  .lang-switcher__option:focus {
    background: var(--color-surface);
  }

  .lang-switcher__option.is-active {
    color: var(--color-accent);
    font-weight: var(--weight-semibold);
  }

  .lang-switcher__check {
    display: none;
    font-size: var(--text-sm);
  }

  .lang-switcher__option.is-active .lang-switcher__check {
    display: inline;
  }

  /* ============================================
     TRANSLATION ERROR BANNER
     ============================================ */
  .i18n-banner {
    background: var(--color-surface);
    padding: var(--space-sm) var(--container-padding);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .i18n-banner__dismiss {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-secondary);
    padding: var(--space-xs);
    min-height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* ============================================
     HOME PAGE — Hero (HOME-01, HOME-03)
     ============================================ */
  .home-hero {
    text-align: center;
    padding-top: var(--space-3xl);
  }

  .home-hero__title {
    font-size: var(--text-display);
    font-weight: var(--weight-semibold);
    line-height: var(--leading-display);
    letter-spacing: var(--tracking-display);
  }

  .home-hero__subtitle {
    font-size: var(--text-heading);
    font-weight: var(--weight-regular);
    line-height: var(--leading-heading);
    letter-spacing: var(--tracking-heading);
    color: var(--color-text-secondary);
    margin-top: var(--space-sm);
  }

  /* ============================================
     APP CARD GRID (D-01, HOME-01, HOME-02)
     ============================================ */
  .app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
    padding-bottom: var(--space-3xl);
  }

  /* ============================================
     APP CARD (D-02, D-03)
     ============================================ */
  .app-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
  }

  .app-card:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    color: inherit;
  }

  .app-card:active {
    transform: scale(0.98);
  }

  .app-card:focus-visible {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  }

  .app-card__icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  }

  .app-card__name {
    font-size: var(--text-body);
    font-weight: var(--weight-semibold);
    color: var(--color-text);
    margin-top: var(--space-md);
  }

  .app-card__tagline {
    font-size: var(--text-sm);
    font-weight: var(--weight-regular);
    color: var(--color-text-secondary);
    margin-top: var(--space-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .app-card__badge {
    font-size: var(--text-sm);
    font-weight: var(--weight-regular);
    color: var(--color-text-secondary);
    background: var(--color-bg);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 100px;
    margin-top: var(--space-sm);
  }

  /* ============================================
     PLACEHOLDER CARD (D-04)
     ============================================ */
  .app-card--placeholder {
    background: transparent;
    border: 2px dashed var(--color-border);
    cursor: default;
    min-height: 180px;
    justify-content: center;
  }

  .app-card--placeholder:hover {
    transform: none;
    box-shadow: none;
  }

  .app-card--placeholder span {
    font-size: var(--text-sm);
    font-weight: var(--weight-regular);
    color: var(--color-text-secondary);
  }

  /* ============================================
     SECTION HEADERS (shared across landing sections)
     ============================================ */
  .section-eyebrow {
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    text-align: center;
  }

  .section-heading {
    font-size: var(--text-heading);
    font-weight: var(--weight-semibold);
    line-height: var(--leading-heading);
    letter-spacing: var(--tracking-heading);
    color: var(--color-text);
    text-align: center;
    margin-top: var(--space-xs);
  }

  /* ============================================
     LANDING HERO (LAND-01, D-05)
     ============================================ */
  .hero {
    text-align: center;
    padding: var(--space-3xl) var(--container-padding);
  }

  @media (min-width: 1024px) {
    .hero {
      padding: var(--hero-padding-y) var(--container-padding);
    }
  }

  .hero__icon {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    margin-inline: auto;
  }

  .hero__title {
    font-size: var(--text-display);
    font-weight: var(--weight-semibold);
    line-height: var(--leading-display);
    letter-spacing: var(--tracking-display);
    margin-top: var(--space-lg);
  }

  .hero__tagline {
    font-size: var(--text-heading);
    font-weight: var(--weight-regular);
    line-height: var(--leading-heading);
    letter-spacing: var(--tracking-heading);
    color: var(--color-text-secondary);
    margin-top: var(--space-sm);
    max-width: var(--content-width);
    margin-inline: auto;
  }

  .hero__badge {
    display: inline-block;
    margin-top: var(--space-lg);
    transition: opacity var(--transition-fast);
  }

  .hero__badge:hover {
    opacity: 0.85;
  }

  .hero__badge img {
    height: 40px;
    width: auto;
  }

  .badge-coming-soon {
    display: inline-block;
    margin-top: var(--space-lg);
    padding: 10px 24px;
    border-radius: 8px;
    background: var(--color-text);
    color: var(--color-bg);
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    opacity: 0.7;
    pointer-events: none;
  }

  /* ============================================
     FEATURES GRID (LAND-03)
     ============================================ */
  .features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
  }

  @media (min-width: 768px) {
    .features-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (min-width: 1024px) {
    .features-grid {
      grid-template-columns: repeat(3, 1fr);
    }
  }

  .feature-card {
    padding: var(--space-lg);
    text-align: center;
  }

  .feature-card__icon {
    width: 48px;
    height: 48px;
    color: var(--color-accent);
    margin-inline: auto;
  }

  .feature-card__title {
    font-size: var(--text-body);
    font-weight: var(--weight-semibold);
    color: var(--color-text);
    margin-top: var(--space-md);
  }

  .feature-card__desc {
    font-size: var(--text-sm);
    font-weight: var(--weight-regular);
    color: var(--color-text-secondary);
    margin-top: var(--space-xs);
  }

  /* ============================================
     SCREENSHOT GALLERY (LAND-04, D-06)
     ============================================ */
  .screenshot-gallery {
    display: flex;
    gap: var(--space-md);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-padding: var(--container-padding);
    -webkit-overflow-scrolling: touch;
    padding: 0 var(--container-padding);
    scrollbar-width: none;
  }

  .screenshot-gallery::-webkit-scrollbar {
    display: none;
  }

  .screenshot-item {
    scroll-snap-align: center;
    flex-shrink: 0;
    width: 240px;
  }

  @media (min-width: 768px) {
    .screenshot-item {
      width: 280px;
    }
  }

  .screenshot-item img {
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    width: 100%;
    height: auto;
  }

  /* Gallery navigation dots */
  .gallery-dots {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-md);
  }

  .gallery-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-text-secondary);
    opacity: 0.3;
    border: none;
    padding: 0;
    cursor: pointer;
    transition: opacity var(--transition-fast), background var(--transition-fast);
  }

  .gallery-dot.is-active {
    background: var(--color-accent);
    opacity: 1;
  }

  /* ============================================
     DESCRIPTION SECTION (LAND-05)
     ============================================ */
  .description-text {
    font-size: var(--text-body);
    font-weight: var(--weight-regular);
    color: var(--color-text);
    margin-top: var(--space-md);
    text-align: center;
  }

  /* ============================================
     REVIEWS (LAND-06)
     ============================================ */
  .reviews-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
  }

  @media (min-width: 768px) {
    .reviews-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  .review-card {
    background: var(--color-surface);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
  }

  .review-card__stars {
    display: flex;
    gap: 2px;
  }

  .review-card__text {
    font-size: var(--text-body);
    font-weight: var(--weight-regular);
    font-style: italic;
    color: var(--color-text);
    margin-top: var(--space-sm);
  }

  .review-card__author {
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--color-text-secondary);
    margin-top: var(--space-sm);
  }

  /* Star rating icons */
  .star-icon {
    color: var(--color-star);
  }

  .star-icon--empty {
    color: var(--color-star-empty);
  }

  /* ============================================
     PRICING (LAND-07)
     ============================================ */
  .pricing-amount {
    font-size: var(--text-heading);
    font-weight: var(--weight-semibold);
    color: var(--color-text);
    text-align: center;
    margin-top: var(--space-md);
  }

  .pricing-detail {
    font-size: var(--text-sm);
    font-weight: var(--weight-regular);
    color: var(--color-text-secondary);
    text-align: center;
    margin-top: var(--space-xs);
  }

  /* ============================================
     FAQ ACCORDION (LAND-08, D-07)
     ============================================ */
  .faq-list {
    margin-top: var(--space-lg);
  }

  .faq-item {
    border-bottom: 1px solid var(--color-border);
  }

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

  .faq-item summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
    font-size: var(--text-body);
    font-weight: var(--weight-semibold);
    color: var(--color-text);
    cursor: pointer;
    list-style: none;
    min-height: 44px;
  }

  .faq-item summary::-webkit-details-marker {
    display: none;
  }

  .faq-chevron {
    transition: transform var(--transition-fast);
    flex-shrink: 0;
    color: var(--color-text-secondary);
  }

  details[open] .faq-chevron {
    transform: rotate(180deg);
  }

  .faq-item__answer {
    padding: 0 0 var(--space-md) 0;
    font-size: var(--text-body);
    font-weight: var(--weight-regular);
    color: var(--color-text-secondary);
  }

  /* ============================================
     CTA SECTION (bottom of landing page)
     ============================================ */
  .cta-section {
    background-color: var(--color-surface);
    padding: var(--space-3xl) 0;
    text-align: center;
  }

  .cta-section__heading {
    font-size: var(--text-heading);
    font-weight: var(--weight-semibold);
    line-height: var(--leading-heading);
    color: var(--color-text);
  }

  .cta-section__badge {
    display: inline-block;
    margin-top: var(--space-lg);
    transition: opacity var(--transition-fast);
  }

  .cta-section__badge:hover {
    opacity: 0.85;
  }

  .cta-section__badge img {
    height: 40px;
    width: auto;
  }

  /* ============================================
     STORE BADGE shared (LAND-02)
     ============================================ */
  .store-badge {
    display: inline-block;
    transition: opacity var(--transition-fast);
  }

  .store-badge:hover {
    opacity: 0.85;
  }

  .store-badge img {
    height: 40px;
    width: auto;
  }

  /* ============================================
     PRIVACY PAGE (LEGAL-01, D-09)
     ============================================ */
  .privacy-content {
    padding-top: var(--space-3xl);
    padding-bottom: var(--space-3xl);
  }

  .privacy-content h1 {
    font-size: var(--text-display);
    font-weight: var(--weight-semibold);
    line-height: var(--leading-display);
  }

  .privacy-content .privacy-updated {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-sm);
  }

  .privacy-content h2 {
    font-size: var(--text-heading);
    font-weight: var(--weight-semibold);
    line-height: var(--leading-heading);
    margin-top: var(--space-xl);
  }

  .privacy-content p {
    font-size: var(--text-body);
    font-weight: var(--weight-regular);
    margin-top: var(--space-sm);
  }

  .privacy-content ul,
  .privacy-content ol {
    padding-left: var(--space-lg);
    margin-top: var(--space-sm);
  }

  .privacy-content li {
    font-size: var(--text-body);
    margin-top: var(--space-xs);
  }

  /* ============================================
     ABOUT PAGE (COMP-03)
     ============================================ */

  /* Hero: dos columnas en desktop, una columna en móvil */
  .about-hero {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: var(--space-lg);
    align-items: start;
    padding-block: var(--space-3xl);
  }

  @media (max-width: 767px) {
    .about-hero {
      grid-template-columns: 1fr;
      justify-items: center;
      text-align: center;
      padding-block: var(--space-2xl);
    }
  }

  /* Foto de perfil circular */
  .about-hero__photo {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    object-fit: cover;
    display: block;
  }

  @media (max-width: 767px) {
    .about-hero__photo {
      width: 120px;
      height: 120px;
    }
  }

  /* Título "iOS Developer" en accent color */
  .about-hero__title-label {
    font-size: var(--text-sm);
    font-weight: var(--weight-regular);
    color: var(--color-accent);
    margin-top: var(--space-sm);
  }

  /* Lista de intereses */
  .about-hobbies__list {
    list-style: none;
    padding: 0;
    margin-top: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
  }

  .about-hobbies__item {
    font-size: var(--text-body);
    font-weight: var(--weight-regular);
    color: var(--color-text);
  }

  /* Lista de links de contacto */
  .about-links__list {
    list-style: none;
    padding: 0;
    margin-top: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
  }

  .about-links__item a {
    font-size: var(--text-body);
    font-weight: var(--weight-regular);
    color: var(--color-accent);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    transition: opacity var(--transition-fast);
  }

  .about-links__item a:hover,
  .about-links__item a:focus-visible {
    opacity: 0.75;
  }
}