/* Writeup pages — built on top of style.css tokens */

.writeup-nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 32px; backdrop-filter: blur(20px);
  background: rgba(8, 8, 13, .7); border-bottom: 1px solid var(--border);
}
.writeup-nav .back-link {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--text-dim); font-size: 14px; font-family: var(--f-mono);
  transition: color .2s ease;
}
.writeup-nav .back-link:hover { color: var(--blue-bright); }
.writeup-nav .back-link ion-icon { font-size: 16px; }
.writeup-nav .brand {
  font-family: var(--f-display); font-size: 15px; font-weight: 600; color: #fff;
  letter-spacing: -.01em;
}
.writeup-actions {
  display: inline-flex; align-items: center; gap: 18px;
}
.copy-link-btn {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--f-mono); font-size: 12px; letter-spacing: .04em;
  color: var(--text-dim);
  padding: 6px 12px; border-radius: 999px;
  background: rgba(59, 130, 246, .06);
  border: 1px solid rgba(59, 130, 246, .22);
  cursor: pointer;
  transition: color .2s ease, background .2s ease, border-color .2s ease;
}
.copy-link-btn:hover {
  color: var(--text-bright);
  background: rgba(59, 130, 246, .14);
  border-color: rgba(59, 130, 246, .4);
}
.copy-link-btn ion-icon { font-size: 14px; }
.copy-link-btn.is-copied {
  color: var(--blue-bright);
  border-color: rgba(59, 130, 246, .55);
  background: rgba(59, 130, 246, .18);
}
@media (max-width: 560px) {
  .copy-link-btn span { display: none; }
  .copy-link-btn { padding: 7px 9px; }
}

.writeup {
  max-width: 780px; margin: 0 auto; padding: 80px 32px 120px;
  position: relative; z-index: 2;
}
.writeup-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 999px;
  background: rgba(59, 130, 246, .08); border: 1px solid rgba(59, 130, 246, .2);
  color: var(--blue-bright); font-family: var(--f-mono); font-size: 12px;
  letter-spacing: .04em; text-transform: uppercase;
  margin-bottom: 22px;
}
.writeup h1 {
  font-family: var(--f-display); font-size: clamp(36px, 5vw, 52px);
  font-weight: 600; letter-spacing: -.02em; line-height: 1.1;
  background: var(--grad-text); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 18px;
}
.writeup-lede {
  font-size: 18px; line-height: 1.6; color: var(--text-dim);
  margin-bottom: 32px;
}
.writeup-meta {
  display: flex; flex-wrap: wrap; gap: 10px;
  padding-bottom: 32px; margin-bottom: 40px;
  border-bottom: 1px solid var(--border);
}
.writeup-meta span {
  padding: 6px 12px; border-radius: 8px;
  background: rgba(255,255,255,.04); border: 1px solid var(--border);
  font-family: var(--f-mono); font-size: 12px; color: var(--text-mute);
}

.writeup-spec {
  display: grid;
  grid-template-columns: max-content 1fr;
  column-gap: 26px; row-gap: 12px;
  padding: 22px 26px;
  border-radius: 14px;
  background: rgba(255, 255, 255, .025);
  border: 1px solid var(--border);
  margin: 0 0 44px;
}
.writeup-spec dt {
  font-family: var(--f-mono); font-size: 11px;
  letter-spacing: .08em; text-transform: uppercase;
  color: var(--text-mute);
  align-self: center;
}
.writeup-spec dd {
  margin: 0;
  font-family: var(--f-mono); font-size: 13px;
  line-height: 1.55; color: var(--text);
}
.writeup-spec dd a {
  color: var(--blue-bright);
  border-bottom: 1px solid rgba(59, 130, 246, .35);
  transition: border-color .2s ease;
}
.writeup-spec dd a:hover { border-bottom-color: var(--blue-bright); }
.writeup-spec dd code {
  font-family: var(--f-mono); font-size: 12px;
  padding: 1px 6px; border-radius: 4px;
  background: rgba(59, 130, 246, .08);
  border: 1px solid rgba(59, 130, 246, .15);
  color: var(--blue-bright);
}
@media (max-width: 560px) {
  .writeup-spec {
    grid-template-columns: 1fr;
    row-gap: 16px; padding: 20px 22px;
  }
  .writeup-spec dt { margin-bottom: -8px; }
}

.writeup-body h2 {
  font-family: var(--f-display); font-size: 22px; font-weight: 600;
  color: #fff; letter-spacing: -.01em; margin: 48px 0 16px;
}
.writeup-body h2:first-child { margin-top: 0; }
.writeup-body h3 {
  font-family: var(--f-display); font-size: 16px; font-weight: 600;
  color: #fff; margin: 28px 0 10px;
}
.writeup-body p {
  font-size: 15.5px; line-height: 1.7; color: var(--text-dim);
  margin-bottom: 16px;
}
.writeup-body ul {
  list-style: none; padding: 0; margin: 0 0 20px;
}
.writeup-body ul li {
  position: relative; padding-left: 22px; margin-bottom: 10px;
  font-size: 15px; line-height: 1.65; color: var(--text-dim);
}
.writeup-body ul li::before {
  content: ""; position: absolute; left: 4px; top: 10px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--blue-bright); box-shadow: 0 0 8px var(--blue);
}
.writeup-body code {
  font-family: var(--f-mono); font-size: 13px;
  padding: 2px 7px; border-radius: 5px;
  background: rgba(59, 130, 246, .1); border: 1px solid rgba(59, 130, 246, .15);
  color: var(--blue-bright);
}
.writeup-body strong { color: var(--text); font-weight: 600; }

.writeup-cta {
  display: flex; align-items: center; gap: 12px;
  margin-top: 56px; padding: 24px;
  border-radius: 16px;
  background: rgba(59, 130, 246, .06); border: 1px solid rgba(59, 130, 246, .2);
}
.writeup-cta-text { flex: 1; }
.writeup-cta-text b { display: block; color: #fff; font-family: var(--f-display); font-size: 15px; margin-bottom: 2px; }
.writeup-cta-text span { color: var(--text-mute); font-size: 13px; font-family: var(--f-mono); }
.writeup-cta a {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 10px;
  background: var(--blue); color: #fff; font-weight: 500; font-size: 14px;
  transition: background .2s ease, transform .2s ease;
}
.writeup-cta a:hover { background: var(--blue-bright); transform: translateY(-1px); }
.writeup-cta a ion-icon { font-size: 16px; }

@media (max-width: 640px) {
  .writeup-nav { padding: 14px 20px; }
  .writeup { padding: 56px 20px 80px; }
  .writeup-cta { flex-direction: column; align-items: flex-start; }
}