/* Topic pages (framework, testing, inspector, FAQs) + the shared multi-column footer. */
.page-hero { padding-top: clamp(80px, 12vw, 140px) !important; padding-bottom: clamp(32px, 5vw, 56px) !important; }
.page-hero h1 { font-size: clamp(40px, 6.4vw, 78px); max-width: 920px; }
.page-hero.short { padding-bottom: 0 !important; }
.page-hero .lede { max-width: 700px; }
.page-hero .cmd { max-width: 100%; overflow-x: auto; white-space: nowrap; }
.sub-page main section h2 { font-size: clamp(28px, 3.6vw, 40px); }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.grid3 > * { background: linear-gradient(180deg, var(--panel), var(--night-2)); border: 1px solid var(--line); border-radius: 16px; padding: 22px; }
.grid3 p { margin: 0; font-size: 14.5px; color: var(--mute); }
.center-sub { text-align: center; margin: 22px auto 0 !important; }

/* inspector screenshot tabs */
.tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 22px; }
.tabs button { font: 500 14px var(--sans); color: var(--mute); background: rgba(17, 22, 40, 0.6); border: 1px solid var(--line); border-radius: 999px; padding: 8px 16px; cursor: pointer; transition: color .2s, border-color .2s, background .2s; }
.tabs button:hover { color: var(--text); }
.tabs button[aria-selected="true"] { color: #11131c; background: var(--moon); border-color: var(--moon); }
.tab-stage { position: relative; max-width: 980px; margin: 0 auto; }
.tab-stage figure { margin: 0; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45); background: var(--panel); display: none; }
.tab-stage figure.on { display: block; animation: tabin .45s cubic-bezier(.2,.7,.2,1); }
.tab-stage img { display: block; width: 100%; height: auto; }
.tab-stage figcaption { font: 12.5px var(--mono); color: var(--mute); padding: 10px; border-top: 1px solid var(--line); text-align: center; }
@keyframes tabin { from { opacity: 0; transform: translateY(10px) scale(.99); } }

/* footer */
footer.site-foot { display: grid; grid-template-columns: 1.2fr 2fr; gap: 32px 48px; align-items: start; padding-top: 44px; padding-bottom: 36px; }
.foot-brand p { margin: 10px 0 0; color: var(--mute); font-size: 14px; max-width: 300px; }
.foot-cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.foot-cols div { display: flex; flex-direction: column; gap: 8px; }
.foot-cols b { font: 500 12px var(--mono); color: var(--accent); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 4px; }
.foot-cols a { color: var(--mute); text-decoration: none; font-size: 14.5px; }
.foot-cols a:hover { color: var(--text); }
.foot-copy { grid-column: 1 / -1; margin: 0; padding-top: 18px; border-top: 1px solid var(--line); color: var(--mute); font-size: 13px; }

@media (max-width: 900px) {
  .grid3 { grid-template-columns: 1fr; }
  footer.site-foot { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .foot-cols { grid-template-columns: 1fr 1fr; }
  .page-hero .cmd { font-size: 12.5px; }
}

/* mobile menu */
.menu-btn { display: none; width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 10px; background: transparent; cursor: pointer; padding: 0; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.menu-btn span { display: block; width: 16px; height: 1.5px; background: var(--text); transition: transform .25s; }
.nav.open .menu-btn span:first-child { transform: translateY(3.25px) rotate(45deg); }
.nav.open .menu-btn span:last-child { transform: translateY(-3.25px) rotate(-45deg); }
@media (max-width: 760px) {
  .menu-btn { display: inline-flex; }
  .nav nav { display: none !important; }
  .nav.open nav { display: flex !important; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; padding: 8px clamp(16px, 4vw, 48px) 16px; background: var(--night); border-bottom: 1px solid var(--line); box-shadow: 0 20px 40px rgba(0,0,0,.5); }
  .nav.open nav a { display: block !important; padding: 12px 0; border-bottom: 1px solid rgba(29, 36, 64, .6); color: var(--text); font-size: 16px; }
  .nav.open nav a.gh { border-bottom: 0; }
}

/* GitHub mark on Source / GitHub buttons */
.btn.gh-btn { display: inline-flex; align-items: center; gap: 9px; }
.btn.gh-btn svg { width: 18px; height: 18px; flex: none; }

/* App Framework dropdown */
.dd { position: relative; }
.dd-btn { display: inline-flex; align-items: center; gap: 6px; background: none; border: 0; padding: 0; color: var(--mute); font: inherit; font-size: 14.5px; cursor: pointer; }
.dd-btn:hover, .dd.open .dd-btn, .dd:focus-within .dd-btn { color: var(--text); }
.dd-btn svg { transition: transform .2s; }
.dd.open .dd-btn svg { transform: rotate(180deg); }
.dd-menu { position: absolute; top: calc(100% + 14px); left: -14px; z-index: 30; min-width: 280px; display: none; flex-direction: column; gap: 2px; padding: 8px; border-radius: 14px; border: 1px solid #2a3560; background: rgba(10, 13, 26, .98); box-shadow: 0 24px 60px rgba(0, 0, 0, .55); }
.dd-menu::before { content: ""; position: absolute; top: -14px; left: 0; right: 0; height: 14px; }
.dd-menu a { display: flex; flex-direction: column; gap: 2px; padding: 10px 12px; border-radius: 10px; text-decoration: none; color: var(--text) !important; }
.dd-menu a b { font-weight: 600; font-size: 14.5px; }
.dd-menu a span { color: var(--mute); font-size: 13px; }
.dd-menu a:hover { background: rgba(169, 184, 255, .08); }
.dd-menu a::after { display: none !important; }
.dd.open .dd-menu { display: flex; }
@media (hover: hover) and (min-width: 761px) { .dd:hover .dd-menu, .dd:focus-within .dd-menu { display: flex; } }
@media (max-width: 760px) {
  .nav.open .dd { border-bottom: 1px solid rgba(29, 36, 64, .6); }
  .nav.open .dd-btn { display: none; }
  .nav.open .dd-menu { display: flex; position: static; min-width: 0; padding: 0; border: 0; background: none; box-shadow: none; }
  .nav.open .dd-menu a { padding: 12px 0; border-radius: 0; }
  .nav.open .dd-menu a span { display: none; }
}

.nav nav a.gh.x svg { width: 17px; height: 17px; }