/* ════════════════════════════════════════════════════════════════
   Project subpage — editorial theme with a sticky TOC sidebar and a
   per-page accent colour. Set --accent / --accent-soft on <body>.
   Falls back to the site's gold if a page doesn't define one.
   ════════════════════════════════════════════════════════════════ */

body {
  background: var(--paper);
  color: var(--charcoal);
  font-family: var(--font-sans);
  --accent: var(--gold-dark);
  --accent-soft: rgba(238, 216, 170, 0.22);
  scroll-behavior: smooth;
}

/* ── Top bar: back button + breadcrumb ───────────────────────── */
.project-topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 1.1rem;
  width: 100%;
  padding: 0.9rem 1.5rem;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(8px);
}
.topbar-back {
  flex-shrink: 0;
  color: var(--charcoal);
  font-size: 1.1rem;
  width: 2.4rem;
  height: 2.4rem;
  border: 1px solid rgba(37, 38, 39, 0.2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: all 0.25s ease;
}
.topbar-back:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 3px 3px 0 var(--accent-soft);
  transform: translate(-2px, -2px);
}

/* Theme toggle, pinned to the right of the bar */
.topbar-theme {
  margin-left: auto;
  flex-shrink: 0;
  cursor: pointer;
  color: var(--charcoal);
  font-size: 1.1rem;
  width: 2.4rem;
  height: 2.4rem;
  border: 1px solid rgba(37, 38, 39, 0.2);
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
}
.topbar-theme:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 3px 3px 0 var(--accent-soft);
  transform: translate(-2px, -2px);
}
[data-theme="dark"] .topbar-theme { color: #E8E4D8; border-color: rgba(232, 228, 216, 0.22); }

/* ── Two-column shell ────────────────────────────────────────── */
.project-shell {
  max-width: 1340px;
  margin: 0 auto;
  padding: 1.5rem 2rem 5rem;
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 4.5rem;
  align-items: start;
}

/* ── Sticky sidebar ──────────────────────────────────────────── */
.project-toc {
  position: sticky;
  top: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.toc-kicker {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.toc-list { display: flex; flex-direction: column; }
.toc-list a {
  position: relative;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 300;
  letter-spacing: 0.02em;
  color: var(--grey);
  text-decoration: none;
  padding: 0.5rem 0 0.5rem 1rem;
  border-left: 2px solid rgba(37, 38, 39, 0.12);
  transition: all 0.2s ease;
}
.toc-list a:hover { color: var(--charcoal); border-left-color: var(--accent); }
.toc-list a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 400;
}

.toc-block-label {
  font-family: var(--font-sans);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--grey);
  margin-bottom: 0.7rem;
  opacity: 0.8;
}

.toc-stack { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.toc-stack .tag {
  font-family: var(--font-sans);
  font-size: 0.64rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--charcoal);
  border: 1px solid rgba(37, 38, 39, 0.2);
  padding: 0.22rem 0.5rem;
  border-radius: 999px;
}

.toc-links { display: flex; flex-direction: column; gap: 0.6rem; }
.toc-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--charcoal);
  text-decoration: none;
  padding: 0.55rem 0.9rem;
  border: 1px solid rgba(37, 38, 39, 0.22);
  transition: all 0.2s ease;
}
.toc-links a:hover { border-color: var(--accent); color: var(--accent); transform: translateX(2px); }
.toc-links a.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.toc-links a.primary:hover { filter: brightness(1.08); color: #fff; }
.toc-links a.disabled { opacity: 0.4; pointer-events: none; }

/* ── Main column ─────────────────────────────────────────────── */
.project-main { min-width: 0; }

.project-breadcrumb {
  display: flex;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--grey);
}
.project-breadcrumb a { color: var(--grey); text-decoration: none; }
.project-breadcrumb a:hover { color: var(--accent); }
.project-breadcrumb .sep { opacity: 0.4; }
.project-breadcrumb .current { color: var(--charcoal); }

.project-main h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 6.5vw, 4.6rem);
  font-weight: 600;
  line-height: 1.02;
  color: var(--charcoal);
  margin: 0.5rem 0 0.6rem;
}

/* Eyebrow now sits just under the title */
.project-eyebrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.project-tagline {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-style: italic;
  line-height: 1.4;
  color: var(--charcoal);
  opacity: 0.72;
  max-width: 46ch;
  margin-bottom: 2rem;
}

/* ── Hero image, with accent wash ────────────────────────────── */
.project-hero-img {
  position: relative;
  width: 100%;
  height: 360px;
  margin-bottom: 3.5rem;
  overflow: hidden;
  border: 1px solid rgba(37, 38, 39, 0.1);
}
.project-hero-img img { width: 100%; height: 100%; object-fit: cover; display: block; }

.img-placeholder {
  position: relative;
  width: 100%;
  height: 100%;
  border: 1px dashed color-mix(in srgb, var(--accent) 45%, transparent);
  background:
    radial-gradient(120% 120% at 80% 10%, var(--accent-soft), transparent 60%),
    repeating-linear-gradient(45deg, var(--accent-soft) 0 10px, transparent 10px 22px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  color: var(--grey);
  text-align: center;
  padding: 1.5rem;
}
.img-placeholder i { font-size: 2.6rem; color: var(--accent); opacity: 0.7; }
.img-placeholder span {
  font-size: 0.8rem;
  font-style: italic;
  letter-spacing: 0.04em;
  max-width: 40ch;
}
.img-placeholder.shot { height: 220px; margin: 0; border-radius: 0; }

/* ── Sections ────────────────────────────────────────────────── */
.project-section { margin-bottom: 1.85rem; scroll-margin-top: 2.5rem; }

.project-section h2 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.project-section h2::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--accent);
  flex-shrink: 0;
}

.project-section h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--charcoal);
  margin: 1.5rem 0 0.5rem;
}

.project-section p,
.project-section li {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.85;
  color: var(--charcoal);
  opacity: 0.82;
}
.project-section p { margin-bottom: 1rem; }
.project-section ul { padding-left: 1.25rem; margin-bottom: 1rem; }
.project-section li { margin-bottom: 0.55rem; }
.project-section li::marker { color: var(--accent); }
.project-section strong { font-weight: 600; opacity: 1; }
.project-section code {
  font-family: monospace;
  font-size: 0.85em;
  background: var(--accent-soft);
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
}

.project-lead {
  font-family: var(--font-serif);
  font-size: 1.4rem !important;
  line-height: 1.6 !important;
  opacity: 0.9 !important;
  border-left: 3px solid var(--accent);
  padding-left: 1.25rem;
}

/* ── Stat strip ──────────────────────────────────────────────── */
.project-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 3rem;
  padding: 1.5rem 0;
  margin: 1.75rem 0 2.5rem;
  border-top: 1px solid rgba(37, 38, 39, 0.14);
  border-bottom: 1px solid rgba(37, 38, 39, 0.14);
}
.project-stat .num {
  display: block;
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--charcoal);
  margin-bottom: 0.25rem;
}
.project-stat .num .unit { color: var(--accent); }
.project-stat .label {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 300;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--grey);
}

.wip-banner {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.35rem 0.75rem;
  margin-bottom: 1.5rem;
}

.gallery-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }

/* ── Flow chart ──────────────────────────────────────────────── */
.flow {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0.4rem;
  margin: 1.25rem 0 1.5rem;
}
.flow-step {
  flex: 1 1 0;
  min-width: 116px;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.85rem 0.9rem;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  background: var(--accent-soft);
}
.flow-step i { font-size: 1.25rem; color: var(--accent); }
.flow-step .flow-label {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.1;
  color: var(--charcoal);
}
.flow-step .flow-sub {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 300;
  line-height: 1.35;
  color: var(--grey);
}
.flow-arrow {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1.1rem;
}
/* A node that splits into two outputs */
.flow-branch { display: flex; flex-direction: column; gap: 0.4rem; flex: 1 1 0; min-width: 116px; }

@media (max-width: 640px) {
  .flow { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); padding: 0.1rem 0; }
  .flow-branch { flex-direction: row; }
}

[data-theme="dark"] .flow-step .flow-label { color: #E8E4D8; }

a { text-decoration: none; color: inherit; }

/* ── Mobile ──────────────────────────────────────────────────── */
@media (max-width: 860px) {
  .project-shell { grid-template-columns: 1fr; gap: 2rem; padding-top: 4rem; }
  .project-toc {
    position: static;
    flex-direction: column;
    gap: 1.25rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(37, 38, 39, 0.12);
  }
  .toc-list { display: none; } /* hide jump-nav on mobile; keep stack + links */
  .project-hero-img { height: 240px; }
  .gallery-grid { grid-template-columns: 1fr; }
}

/* ── Dark theme ──────────────────────────────────────────────── */
[data-theme="dark"] body { background: #1a1b1c; color: #E8E4D8; }
[data-theme="dark"] .project-main h1,
[data-theme="dark"] .project-section h2,
[data-theme="dark"] .project-section h3,
[data-theme="dark"] .project-tagline,
[data-theme="dark"] .project-section p,
[data-theme="dark"] .project-section li,
[data-theme="dark"] .project-breadcrumb .current,
[data-theme="dark"] .toc-stack .tag,
[data-theme="dark"] .toc-links a { color: #E8E4D8; }
[data-theme="dark"] .toc-stack .tag,
[data-theme="dark"] .toc-links a { border-color: rgba(232, 228, 216, 0.22); }
[data-theme="dark"] .toc-list a { border-left-color: rgba(232, 228, 216, 0.15); }
[data-theme="dark"] .minimalist-back {
  color: #E8E4D8;
  background: rgba(26, 27, 28, 0.85);
  border-color: rgba(232, 228, 216, 0.22);
}
[data-theme="dark"] .toc-links a.primary { color: #1a1b1c; }
[data-theme="dark"] .toc-links a.primary:hover { color: #1a1b1c; }
[data-theme="dark"] .project-hero-img { border-color: rgba(232, 228, 216, 0.12); }
[data-theme="dark"] .project-stat .num { color: #E8E4D8; }
[data-theme="dark"] .project-stats { border-color: rgba(232, 228, 216, 0.15); }
