/* ==========================================================================
   08 Developers — code window on a dotted stage + synced vertical tabs (Aeye)
   ========================================================================== */
#developers .dev-layout {
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  border: 1px solid var(--line); position: relative;
}

/* ---------- code stage ---------- */
#developers .dev-stage {
  position: relative; border-right: 1px solid var(--line);
  padding: clamp(32px, 4vw, 64px) clamp(20px, 3.2vw, 52px);
  display: grid; align-items: center;
  background-color: var(--bg-2);
}
/* neutral dot grid (local override of the shared lavender .dots) */
#developers .dev-stage.dots { background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,.07) 1px, transparent 0); }
#developers .dev-stage::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse 60% 50% at 50% 55%, rgba(255,255,255,.045), transparent 70%);
}
#developers .dev-win {
  position: relative; border-radius: var(--r);
  background: #0a0a0a;
  box-shadow: 0 0 0 1px #2e2e2e, 0 40px 100px -40px rgba(0,0,0,.9), 0 0 0 7px rgba(5,5,6,.7);
}
#developers .dev-win::before {
  content: ""; position: absolute; left: 12%; right: 12%; top: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.28), transparent);
}
/* small square corner marks (Aeye) */
#developers .dev-corner { position: absolute; width: 5px; height: 5px; background: var(--text-2); z-index: 2; }
#developers .dev-corner.tl { left: -14px; top: -14px; }
#developers .dev-corner.tr { right: -14px; top: -14px; }
#developers .dev-corner.bl { left: -14px; bottom: -14px; }
#developers .dev-corner.br { right: -14px; bottom: -14px; }

#developers .dev-win-top {
  display: flex; align-items: center; gap: 14px; height: 48px; padding: 0 10px 0 16px;
  border-bottom: 1px solid var(--line);
}
#developers .dev-win-dots { display: inline-flex; gap: 6px; flex: none; }
#developers .dev-win-dots i { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.1); }
#developers .dev-tabs { display: flex; align-self: stretch; margin-left: 8px; min-width: 0; }
#developers .dev-tab {
  position: relative; padding: 0 14px; font-size: 13px; color: var(--text-3); white-space: nowrap;
  transition: color .3s;
}
#developers .dev-tab::after {
  content: ""; position: absolute; left: 10px; right: 10px; bottom: -1px; height: 1px;
  background: var(--text);
  transform: scaleX(0); transition: transform .5s var(--ease-out);
}
#developers .dev-tab:hover { color: var(--text-2); }
#developers .dev-tab[aria-selected="true"] { color: var(--text); }
#developers .dev-tab[aria-selected="true"]::after { transform: scaleX(1); }
#developers .dev-tab:focus-visible { outline-offset: -6px; }
/* Vercel secondary button, small (32px, 6px radius) */
#developers .dev-copy {
  margin-left: auto; display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 10px; flex: none;
  border-radius: 6px; color: var(--text); background: #0a0a0a; box-shadow: 0 0 0 1px #2e2e2e;
  font-size: 13px; font-weight: 500;
  transition: color .15s, background .15s cubic-bezier(0.4, 0, 0.2, 1), box-shadow .15s;
}
#developers .dev-copy svg { width: 14px; height: 14px; color: var(--text-2); }
#developers .dev-copy:hover { background: #1f1f1f; }
#developers .dev-copy.is-copied, #developers .dev-copy.is-copied svg { color: #7cf0b5; }
#developers .dev-copy-label { min-width: 6ch; text-align: left; font-family: var(--font-sans); font-size: 13px; letter-spacing: -0.01em; text-transform: none; }

/* panels stack in one cell so switching never changes the height */
#developers .dev-panels { display: grid; }
#developers .dev-panel { grid-area: 1 / 1; min-width: 0; outline: none; }
#developers .dev-panel[hidden] { display: block; visibility: hidden; }
#developers .dev-panel:focus-visible { box-shadow: inset 0 0 0 1px rgba(237,237,237,.5); }
#developers pre {
  margin: 0; padding: 18px 0 20px; overflow-x: auto; white-space: normal;
  font-family: var(--font-mono); font-size: 13px; line-height: 1.8; color: var(--text-2);
  scrollbar-width: thin; scrollbar-color: var(--line-2) transparent;
}
#developers code { display: block; min-width: max-content; counter-reset: ln; white-space: normal; }
#developers .ln { display: block; white-space: pre; padding-right: 20px; counter-increment: ln; }
#developers .ln::before {
  content: counter(ln, decimal-leading-zero); display: inline-block; width: 3.4em; padding-right: 1.2em; text-align: right;
  color: var(--text-4); user-select: none;
}
/* restrained Geist-style syntax: bright keywords, green strings, blue props, amber literals (no red, no purple) */
#developers .t-k { color: var(--text); }
#developers .t-s { color: #6fd89c; }
#developers .t-c { color: var(--text-3); }
#developers .t-f { color: #fff; }
#developers .t-n { color: #f5b971; }
#developers .t-p { color: #7cb6ff; }
#developers .t-v { color: #f5b971; }
#developers .t-o { color: var(--text-3); }

#developers .dev-win-foot {
  display: flex; align-items: center; gap: 16px; height: 40px; padding: 0 16px; border-top: 1px solid var(--line);
  color: var(--text-2); font-size: 10.5px;
}
#developers .dev-win-foot > span:first-child { display: inline-flex; align-items: center; gap: 8px; color: #7cf0b5; }
#developers .dev-foot-ver { margin-left: auto; }

/* ---------- right column ---------- */
#developers .dev-copycol { display: flex; flex-direction: column; justify-content: center; min-width: 0; padding-block: clamp(32px, 4vw, 60px); }
#developers .dev-intro { display: grid; gap: 22px; justify-items: start; padding: 0 clamp(24px, 3vw, 48px); }
#developers .dev-intro .h2 { max-width: 16ch; }
#developers .dev-intro .lead { max-width: 440px; }

#developers .dev-vtabs { display: grid; gap: 2px; margin-top: clamp(28px, 3.4vw, 48px); padding: 0 clamp(24px, 3vw, 48px); }
#developers .dev-vtab {
  position: relative; display: grid; grid-template-rows: auto 0fr; text-align: left;
  padding: 10px 0 10px 22px; transition: grid-template-rows .6s var(--ease-out);
}
#developers .dev-vtab-bar { position: absolute; left: 0; top: 6px; bottom: 6px; width: 1px; background: var(--line-2); }
#developers .dev-vtab-bar i {
  position: absolute; inset: 0; display: block; transform-origin: top center; transform: scaleY(0);
  background: var(--accent);   /* the one red signal: auto-advance progress */
}
#developers .dev-vtab.is-active .dev-vtab-bar { width: 2px; left: -.5px; background: var(--line-2); }
#developers .dev-vtab.is-active .dev-vtab-bar i { transform: scaleY(var(--p, 1)); }
#developers .dev-vtab-t { font-size: 19px; font-weight: 450; letter-spacing: -0.03em; color: var(--text-3); transition: color .4s; }
#developers .dev-vtab:hover .dev-vtab-t { color: var(--text-2); }
#developers .dev-vtab.is-active { grid-template-rows: auto 1fr; }
#developers .dev-vtab.is-active .dev-vtab-t { color: var(--text); }
#developers .dev-vtab-d { overflow: hidden; font-size: 13.5px; color: var(--text-2); line-height: 1.5; }
#developers .dev-vtab-d > span { display: block; padding-top: 6px; max-width: 340px; opacity: 0; transition: opacity .4s; }
#developers .dev-vtab.is-active .dev-vtab-d > span { opacity: 1; transition-delay: .15s; }

/* .grid hairline row spanning both columns (main.js staggers the cells' contents, so the gap never shows as a slab) */
#developers .dev-feats {
  grid-column: 1 / -1; grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 0; border-top: 1px solid var(--line);
}
#developers .dev-feats li { display: flex; gap: 12px; align-items: flex-start; padding: 18px clamp(16px, 2vw, 24px); min-width: 0; }
#developers .dev-feats li > span:last-child { display: grid; gap: 2px; min-width: 0; }
#developers .dev-feats b { font-weight: 500; font-size: 14px; color: var(--text); letter-spacing: -0.015em; }
#developers .dev-feats .faint { font-size: 12.5px; line-height: 1.4; }
#developers .dev-dz { margin-top: 1px; }

/* ---------- responsive ---------- */
@media (max-width: 991px) {
  /* tablet: intro | vtabs side by side above a full-width code stage */
  #developers .dev-layout { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  #developers .dev-copycol { display: contents; }
  #developers .dev-intro { grid-row: 1; grid-column: 1; padding: 40px 0 40px 32px; align-content: center; }
  #developers .dev-intro .h2 { max-width: 12ch; }
  #developers .dev-vtabs { grid-row: 1; grid-column: 2; margin: 0; padding: 40px 32px 40px 36px; align-content: center; }
  #developers .dev-stage { grid-row: 2; grid-column: 1 / -1; border-right: 0; border-top: 1px solid var(--line); }
  #developers .dev-feats { grid-row: 3; grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 767px) {
  #developers .dev-stage { padding: 28px 14px; }
  #developers .dev-corner.tl, #developers .dev-corner.bl { left: -9px; }
  #developers .dev-corner.tr, #developers .dev-corner.br { right: -9px; }
  #developers .dev-corner.tl, #developers .dev-corner.tr { top: -10px; }
  #developers .dev-corner.bl, #developers .dev-corner.br { bottom: -10px; }
  #developers .dev-win-top { padding: 0 8px 0 12px; gap: 6px; }
  #developers .dev-win-dots { display: none; }
  #developers .dev-tabs { margin-left: 0; }
  #developers .dev-tab { padding: 0 9px; font-size: 12.5px; }
  #developers .dev-copy-label { display: none; }
  #developers .dev-copy { width: 30px; padding: 0; justify-content: center; }
  /* wrap long lines with a hanging indent under the line numbers instead of clipping them */
  #developers pre { font-size: 11px; overflow-x: hidden; }
  #developers code { min-width: 0; }
  #developers .ln { white-space: pre-wrap; overflow-wrap: anywhere; padding: 0 14px 0 3.4em; text-indent: -3.4em; }
  #developers .ln::before { text-indent: 0; }
  #developers .dev-foot-meta { display: none; }
  #developers .dev-layout { grid-template-columns: minmax(0, 1fr); }
  #developers .dev-intro { grid-row: auto; order: -1; padding: 36px 20px 32px; }
  #developers .dev-intro .h2 { max-width: 14ch; }
  /* one tab set on phones: the window tabs (their underline shows the auto-advance progress) */
  #developers .dev-vtabs { display: none; }
  #developers .dev-stage { grid-row: auto; }
  #developers .dev-feats { grid-row: auto; grid-template-columns: 1fr; }
  #developers .dev-tab::after { transform-origin: left center; }
  #developers .dev-tab[aria-selected="true"]::after { transform: scaleX(var(--p, 1)); transition: none; }
}