/* ── Project page layout ── */
.project-hero {
  padding-top: 9rem;
  padding-bottom: 4rem;
  padding-left: 5vw;
  padding-right: 5vw;
  border-bottom: 1px solid var(--rule);
  position: relative;
}
.back-link {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted);
  margin-bottom: 3rem; transition: color 0.2s;
}
.back-link:hover { color: var(--accent); }
.project-hero-label {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 1.2rem;
  display: flex; align-items: center; gap: 0.8rem;
}
.project-hero-label::after {
  content: ''; flex: 1; max-width: 48px; height: 1px; background: var(--accent); opacity: 0.5;
}
.project-hero-title {
  font-family: var(--serif); font-size: clamp(2.4rem, 5.5vw, 5rem);
  font-weight: 300; line-height: 1.05; margin-bottom: 1.8rem;
  max-width: 800px;
}
.project-hero-title em { font-style: italic; color: var(--accent); }
.project-meta {
  display: flex; flex-wrap: wrap; gap: 2.5rem;
  margin-bottom: 2rem;
}
.meta-group { display: flex; flex-direction: column; gap: 0.3rem; }
.meta-label { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.meta-value { font-size: 0.92rem; color: var(--ink); }
.hero-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.5rem; }
.h-tag { font-family: var(--mono); font-size: 0.63rem; letter-spacing: 0.04em; padding: 0.25rem 0.7rem; background: var(--surface); color: var(--muted); }
.hero-btns { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; align-items: center; }
.github-btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 0.65rem 1.4rem; border: 1px solid var(--ink); color: var(--ink);
  transition: background 0.2s, color 0.2s;
}
.github-btn:hover { background: var(--ink); color: var(--bg); }
.live-btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 0.65rem 1.4rem; border: 1px solid var(--accent); color: var(--accent);
  transition: background 0.2s, color 0.2s;
}
.live-btn:hover { background: var(--accent); color: var(--bg); }

/* ── Article body ── */
.project-body {
  max-width: 760px;
  margin: 0 auto;
  padding: 5rem 5vw;
}
.project-body h2 {
  font-family: var(--serif); font-size: 2rem; font-weight: 300;
  margin: 3.5rem 0 1rem; line-height: 1.2;
  padding-bottom: 0.6rem; border-bottom: 1px solid var(--rule);
}
.project-body h2:first-child { margin-top: 0; }
.project-body h3 {
  font-family: var(--serif); font-size: 1.3rem; font-weight: 400;
  margin: 2rem 0 0.6rem;
}
.project-body p {
  color: var(--muted); font-size: 1rem; line-height: 1.85;
  margin-bottom: 1.2rem;
}
.project-body p:last-child { margin-bottom: 0; }
.project-body strong { color: var(--ink); font-weight: 500; }
.project-body em { font-style: italic; }
.project-body a { color: var(--accent); border-bottom: 1px solid transparent; transition: border-color 0.2s; }
.project-body a:hover { border-color: var(--accent); }

/* ── Result callout ── */
.result-block {
  border-left: 3px solid var(--accent);
  padding: 1.2rem 1.4rem;
  background: var(--surface);
  margin: 2rem 0;
}
.result-block p {
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.03em;
  color: var(--ink); line-height: 1.7; margin: 0;
}
.result-block p + p { margin-top: 0.5rem; }

/* ── Data table ── */
.data-table {
  width: 100%; border-collapse: collapse; margin: 2rem 0;
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.02em;
}
.data-table th {
  text-align: left; padding: 0.7rem 1rem;
  border-bottom: 2px solid var(--rule); color: var(--muted);
  font-weight: 400; letter-spacing: 0.08em; text-transform: uppercase; font-size: 0.65rem;
}
.data-table td {
  padding: 0.75rem 1rem; border-bottom: 1px solid var(--rule); color: var(--ink);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--surface); }
.data-table .highlight td { color: var(--accent); }

/* ── Code block ── */
.code-block {
  background: var(--ink); color: #c9c4bd;
  font-family: var(--mono); font-size: 0.78rem; line-height: 1.65;
  padding: 1.4rem 1.6rem; margin: 1.5rem 0; overflow-x: auto;
}

/* ── Section divider ── */
.divider { height: 1px; background: var(--rule); margin: 3rem 0; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .project-meta { gap: 1.5rem; }
  .project-hero-title { font-size: 2.2rem; }
}

@media (max-width: 640px) {
  .project-hero { padding-top: 6.5rem; padding-bottom: 2.5rem; }
  .project-hero-title { font-size: 1.9rem; }
  .project-body { padding: 3rem 6vw; }
  .project-body h2 { font-size: 1.55rem; margin-top: 2.5rem; }
  .data-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .result-block { padding: 1rem 1.1rem; }
  .hero-btns { flex-direction: column; align-items: flex-start; }
  .github-btn, .live-btn { width: 100%; justify-content: center; text-align: center; }
  .back-link { margin-bottom: 2rem; }
}