/* ==========================================================================
   Boxing Arcade — responsive.css
   Mobile-first adjustments layered on top of style.css / game.css.
   Breakpoints: 1080 / 900 / 720 / 560 / 400
   ========================================================================== */

/* ---------- Large desktop ---------- */
@media (max-width: 1080px) {
  .split { grid-template-columns: minmax(0, 1fr) 270px; gap: var(--sp-5); }
  .grid-4 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .site-footer__grid { grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr)); }
}

/* ---------- Small desktop / large tablet ---------- */
@media (max-width: 900px) {
  :root { --fs-3xl: 2rem; --fs-2xl: 1.6rem; --sp-7: 2.25rem; --sp-8: 3rem; }

  .hero__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--sp-5);
    padding-block: var(--sp-6) var(--sp-6);
  }
  .hero__art { order: -1; aspect-ratio: 16 / 9; }
  .hero__text { max-width: none; }

  .split { grid-template-columns: minmax(0, 1fr); }
  .sidebar { position: static; }
  .sidebar-block { margin-bottom: var(--sp-3); }

  .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-auto { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }

  .site-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-5); }
  .site-footer__about { grid-column: 1 / -1; }

  /* Collapse the primary nav behind a toggle. */
  .nav-toggle {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    order: 3;
  }
  .main-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    margin: 0;
    background: var(--c-bg-alt);
    border-bottom: 1px solid var(--c-border);
    box-shadow: var(--sh-3);
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--t-base), transform var(--t-base), visibility var(--t-base);
  }
  .main-nav[data-open="true"] {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--sp-2) var(--sp-4) var(--sp-4);
    max-width: var(--wrap);
    margin-inline: auto;
  }
  .main-nav a {
    padding: 0.8rem 0.6rem;
    border-bottom: 1px solid var(--c-border-soft);
    font-size: var(--fs-md);
    border-radius: 0;
  }
  .main-nav a[aria-current="page"] { box-shadow: inset 3px 0 0 var(--c-accent); }

  /* Game layout stacks: canvas first, side rail underneath. */
  .game-layout { grid-template-columns: minmax(0, 1fr); }
  .game-rail { position: static; }
}

/* ---------- Tablet / large phone ---------- */
@media (max-width: 720px) {
  :root {
    --fs-3xl: 1.75rem;
    --fs-2xl: 1.4rem;
    --fs-xl: 1.25rem;
    --sp-7: 2rem;
    --sp-8: 2.5rem;
  }

  .section-head { align-items: flex-start; flex-direction: column; }

  .grid-2 { grid-template-columns: minmax(0, 1fr); }
  .grid-auto-wide { grid-template-columns: minmax(0, 1fr); }

  .hero__stats { gap: var(--sp-4); }
  .hero__cta .btn { flex: 1 1 100%; }

  .filter-bar { padding: var(--sp-3); gap: var(--sp-2); }
  .filter-bar .field { flex-basis: calc(50% - var(--sp-1)); min-width: 0; }
  .filter-bar__actions { width: 100%; }
  .filter-bar__actions .btn { flex: 1; }

  .author-box { flex-direction: column; gap: var(--sp-3); }

  .game-card__desc { -webkit-line-clamp: 3; }

  /* Touch controls become visible on coarse pointers (see game.css). */
  .game-stage__toolbar { flex-wrap: wrap; }
}

/* ---------- Phone ---------- */
@media (max-width: 560px) {
  :root { --header-h: 56px; --sp-6: 1.5rem; }

  .wrap { padding-inline: var(--sp-3); }

  .grid-3, .grid-4, .grid-auto { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-3); }

  .game-card__body { padding: var(--sp-2) var(--sp-3) var(--sp-3); gap: 0.35rem; }
  .game-card__title { font-size: var(--fs-base); }
  .game-card__desc { display: none; }
  .game-card__meta { padding-top: var(--sp-1); }
  .game-card__actions .btn { padding: 0.5rem 0.6rem; font-size: var(--fs-sm); }

  .cat-card { padding: var(--sp-4); }

  .brand__text small { display: none; }

  .site-footer__grid { grid-template-columns: minmax(0, 1fr); gap: var(--sp-4); }
  .site-footer__bottom { flex-direction: column; align-items: flex-start; }

  .hero__stat b { font-size: var(--fs-lg); }

  .prose h2 { margin-top: var(--sp-6); }

  .ad-slot { margin-block: var(--sp-5); }
}

/* ---------- Very small phone ---------- */
@media (max-width: 400px) {
  .grid-3, .grid-4, .grid-auto { grid-template-columns: minmax(0, 1fr); }
  .game-card__desc { display: -webkit-box; }
  .filter-bar .field { flex-basis: 100%; }
  .hero__stats { flex-direction: column; gap: var(--sp-3); }
}

/* ---------- Short viewports (landscape phones playing a game) ---------- */
@media (max-height: 520px) and (orientation: landscape) {
  .site-header { position: static; }
  .game-stage { padding: var(--sp-2); }
  .game-hud { font-size: var(--fs-xs); }
  .breadcrumb { display: none; }
}

/* ---------- Coarse pointers: bigger hit targets ---------- */
@media (pointer: coarse) {
  .btn { min-height: 44px; }
  .btn--sm { min-height: 38px; }
  .icon-btn, .fav-btn { width: 42px; height: 42px; }
  .main-nav a { min-height: 44px; display: flex; align-items: center; }
  .faq summary { min-height: 48px; }
}

/* ---------- Wide monitors ---------- */
@media (min-width: 1600px) {
  :root { --wrap: 1320px; }
  .grid-auto { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
}