/* Mobile & tablet — loaded after theme CSS so these rules win. */

:root {
  --page-gutter: clamp(1rem, 4vw, 1.25rem);
}

.nav-toggle {
  display: none;
  position: relative;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  flex-shrink: 0;
  overflow: hidden;
  font-size: 0;
  line-height: 0;
}

.nav-toggle__bars {
  position: relative;
  width: 1.1rem;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: background 150ms ease;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform 150ms ease, top 150ms ease;
}

.nav-toggle__bars::before {
  top: -6px;
}

.nav-toggle__bars::after {
  top: 6px;
}

.site-header.is-nav-open .nav-toggle__bars {
  background: transparent;
}

.site-header.is-nav-open .nav-toggle__bars::before {
  top: 0;
  transform: rotate(45deg);
}

.site-header.is-nav-open .nav-toggle__bars::after {
  top: 0;
  transform: rotate(-45deg);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.site-header__bar {
  display: contents;
}

.site-header__actions {
  display: contents;
}

@media (max-width: 900px) {
  html {
    overflow-x: clip;
  }

  .site-header,
  .site-footer,
  .hero,
  .section,
  .editorial-hero,
  .photo-hero,
  .page-shell,
  .site-header__inner {
    width: min(var(--max), calc(100% - 2 * var(--page-gutter)));
  }

  /* Beat per-theme header grid rules from global + accent CSS. */
  html[data-theme] .site-header__inner {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.65rem;
    padding: 0.65rem 0;
  }

  .site-header__bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    width: 100%;
    min-width: 0;
  }

  .site-header__actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
    max-width: 100%;
  }

  html[data-theme] .brand,
  html[data-theme] .main-nav,
  html[data-theme] .site-controls {
    grid-column: auto;
    grid-row: auto;
    justify-self: stretch;
  }

  html[data-theme] .site-controls {
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 0.45rem;
    width: auto;
    max-width: 100%;
  }

  .dev-theme-label {
    display: none;
  }

  .shuffle-btn {
    padding: 0.45rem 0.65rem;
  }

  html[data-theme] .main-nav {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 0.35rem;
    padding: 0.35rem;
    margin: 0;
  }

  html[data-theme] .main-nav::-webkit-scrollbar {
    display: none;
  }

  html[data-theme] .main-nav a {
    flex-shrink: 0;
    white-space: nowrap;
    min-height: 2.25rem;
    display: inline-flex;
    align-items: center;
  }

  html[data-theme="paper-ink"] .site-controls {
    position: static;
    right: auto;
    top: auto;
  }

  html[data-theme="paper-ink"] .site-header__inner {
    text-align: left;
  }

  html[data-theme="ocean-dusk"] .site-header__inner {
    overflow-x: visible;
  }

  html[data-theme="studio-sidebar"] .site-header {
    position: sticky;
    top: 0;
    left: auto;
    width: 100%;
    height: auto;
    border-right: none;
  }

  html[data-theme="studio-sidebar"] .site-header__inner {
    flex-direction: column;
    height: auto;
    max-width: none;
    padding: 0.65rem 0;
  }

  html[data-theme="studio-sidebar"] .main-nav {
    flex-direction: row;
    flex: none;
    align-items: center;
  }

  html[data-theme="studio-sidebar"] main,
  html[data-theme="studio-sidebar"] .site-footer {
    margin-left: 0;
    padding-left: 0;
    padding-right: 0;
  }

  .hero,
  .split,
  .magazine-grid,
  .photo-hero,
  .about-header {
    grid-template-columns: 1fr;
  }

  .hero,
  .photo-hero,
  .section {
    padding: clamp(1rem, 3vw, 1.5rem);
  }

  .hero,
  .photo-hero,
  .split,
  .about-header {
    gap: 1.25rem;
  }

  .photo-hero img {
    max-height: min(60vh, 420px);
    aspect-ratio: 4 / 5;
  }

  .card-grid,
  .opportunity-grid {
    grid-template-columns: 1fr;
  }

  .photo-grid {
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 140px), 1fr));
    gap: 0.75rem;
  }

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

  .about-header .portrait {
    max-width: min(220px, 70vw);
    margin-inline: auto;
  }

  .project-card.compact {
    grid-template-columns: 72px 1fr;
  }

  .project-card.compact img {
    min-height: 72px;
  }

  html[data-theme="documentation"] .project-card,
  html[data-theme="documentation"] .article-card {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
    padding: 1.5rem 0 2rem;
    margin-top: 1.5rem;
  }

  .markdown {
    max-width: none;
  }

  .markdown pre:not(.shiki),
  .markdown pre.shiki {
    max-width: 100%;
  }

  .markdown table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .button {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 640px) {
  .nav-toggle {
    display: inline-flex;
  }

  html[data-theme] .main-nav {
    display: none;
    flex-direction: column;
    flex-wrap: wrap;
    overflow-x: visible;
    overflow-y: auto;
    max-height: min(70vh, 24rem);
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
  }

  .site-header.is-nav-open .main-nav {
    display: flex;
  }

  html[data-theme] .main-nav a {
    width: 100%;
    white-space: normal;
    border-radius: var(--radius-sm);
    min-height: 2.75rem;
    padding: 0.55rem 0.85rem;
  }

  .lang-flag__icon {
    width: 1.25rem;
  }

  .shuffle-btn {
    font-size: 0.72rem;
    padding: 0.42rem 0.55rem;
  }
}

@media (max-width: 480px) {
  :root {
    --page-gutter: 0.85rem;
  }

  .hero h1,
  .editorial-hero h1,
  .photo-hero h1,
  .page-shell h1 {
    font-size: clamp(1.55rem, 7vw, 2rem);
  }

  .tag-list {
    gap: 0.3rem 0.65rem;
  }
}