/* =========================================================
   Unified portfolio (portfolio/index.html) — graphite theme.
   Builds on assets/css/gallery.css (variables, shell, lightbox).
   ========================================================= */

.cat-wrap { max-width: 1240px; }

/* ---------- tools: filter chips + search ---------- */
.cat-tools { display: flex; flex-wrap: wrap; gap: 14px 18px; align-items: center; margin: 0 0 18px; }
.cat-chips { display: flex; flex-wrap: wrap; gap: 8px; flex: 1 1 520px; }
.cat-chip {
  appearance: none; border: 1px solid var(--line); background: transparent; color: var(--ink-dim);
  font: inherit; font-size: 13px; font-weight: 500; letter-spacing: -0.01em;
  padding: 7px 13px; border-radius: 999px; cursor: pointer; display: inline-flex; align-items: center; gap: 7px;
  transition: background .15s, color .15s, border-color .15s;
}
.cat-chip i { font-size: 13px; opacity: .8; }
.cat-chip b { font-weight: 500; font-size: 11px; color: var(--muted); }
.cat-chip:hover { border-color: var(--line-strong); color: var(--ink); }
.cat-chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #0e1116; }
.cat-chip[aria-pressed="true"] b { color: rgba(14, 17, 22, .65); }

.cat-search {
  flex: 0 1 240px; display: flex; align-items: center; gap: 8px;
  border: 1px solid var(--line); border-radius: 999px; padding: 0 14px; background: var(--surface);
  color: var(--muted);
}
.cat-search:focus-within { border-color: var(--accent); }
.cat-search input {
  flex: 1; min-width: 0; background: none; border: 0; outline: none; color: var(--ink);
  font: inherit; font-size: 13.5px; padding: 8px 0;
}
.cat-search input::placeholder { color: var(--muted); }

.cat-status { margin: 0 0 22px; font-size: 13px; color: var(--muted); min-height: 1.4em; }

.cat-casebar {
  display: flex; gap: 12px; align-items: flex-start; max-width: 860px; margin: 0 0 22px; padding: 12px 16px;
  background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 10px;
  font-size: 13.5px; color: var(--ink-dim);
}
.cat-casebar[hidden] { display: none; }
.cat-casebar i.bi-graph-up-arrow { color: var(--accent); margin-top: 2px; }
.cat-casebar a { color: var(--accent); font-weight: 500; }

/* ---------- grid ---------- */
.cat-grid {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(268px, 1fr)); gap: 20px;
}
.cat-card { margin: 0; }
.cat-card > a {
  display: flex; flex-direction: column; height: 100%;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  transition: border-color .2s, transform .2s;
}
.cat-card > a:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.cat-card > a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.cat-card__media { position: relative; aspect-ratio: 4 / 3; background: #e9ebee; /* many source images are transparent PNGs made for a white page */ overflow: hidden; }
.cat-card__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.cat-card__media.is-contain img { object-fit: contain; background: #fff; }
.cat-card__ph {
  position: absolute; inset: 0; display: grid; place-items: center; font-size: 46px; color: var(--accent);
  background: linear-gradient(135deg, #2f3542 0%, #232830 100%);
}
.cat-card__badges { position: absolute; left: 10px; top: 10px; display: flex; gap: 6px; }
.cat-badge {
  font-size: 11px; box-shadow: 0 1px 4px rgba(0,0,0,.25); font-weight: 600; letter-spacing: .02em; padding: 3px 9px; border-radius: 999px;
  background: rgba(20, 22, 26, .78); color: var(--ink); backdrop-filter: blur(4px);
}
.cat-badge--case { background: var(--accent); color: #0e1116; }
.cat-badge--n { position: absolute; right: -0px; }

.cat-card__body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.cat-card__name { margin: 0; font-size: 16.5px; font-weight: 700; letter-spacing: -0.01em; line-height: 1.25; }
.cat-card__meta { margin: 0; font-size: 12px; color: var(--accent); }
.cat-card__line {
  margin: 4px 0 0; font-size: 13px; color: var(--ink-dim);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.cat-card__metric { margin: 6px 0 0; font-size: 12.5px; color: var(--ink-dim); }
.cat-card__metric b { color: var(--ink); font-size: 15px; margin-right: 6px; }
.cat-card__tags { margin: auto 0 0; padding-top: 10px; display: flex; flex-wrap: wrap; gap: 6px; }
.cat-card__tags i {
  font-style: normal; font-size: 11px; color: var(--muted); border: 1px solid var(--line);
  padding: 2px 8px; border-radius: 999px;
}

.cat-empty { color: var(--muted); padding: 40px 0; font-size: 15px; }

/* ---------- project view ---------- */
.proj-back {
  appearance: none; border: 1px solid var(--line); background: var(--surface); color: var(--ink);
  font: inherit; font-size: 13px; padding: 7px 14px; border-radius: 999px; cursor: pointer; margin-bottom: 26px;
  display: inline-flex; gap: 8px; align-items: center;
}
.proj-back:hover { background: var(--surface-2); }

.proj-head { max-width: 820px; margin-bottom: 34px; }
.proj-head h1 { margin: 0 0 12px; font-size: clamp(30px, 5vw, 46px); font-weight: 700; line-height: 1.08; letter-spacing: -0.03em; }
.proj-meta { margin: 0 0 14px; font-size: 14px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 4px 14px; }
.proj-meta span b { color: var(--ink-dim); font-weight: 500; }
.proj-sum { margin: 0; font-size: 17px; color: var(--ink-dim); max-width: 700px; }
.proj-links { margin: 16px 0 0; display: flex; flex-wrap: wrap; gap: 10px; }
.proj-link {
  display: inline-flex; gap: 8px; align-items: center; font-size: 13.5px; padding: 8px 14px;
  border: 1px solid var(--line-strong); border-radius: 999px; color: var(--ink);
}
.proj-link:hover { border-color: var(--accent); color: var(--accent); }

.proj-case {
  display: grid; grid-template-columns: auto 1fr auto; gap: 8px 22px; align-items: center;
  background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--accent);
  border-radius: var(--radius); padding: 18px 22px; margin: 0 0 40px; max-width: 920px;
}
.proj-case__metric { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; line-height: 1; }
.proj-case__metric small { display: block; font-size: 11.5px; font-weight: 400; color: var(--muted); letter-spacing: 0; margin-top: 6px; max-width: 160px; }
.proj-case__txt h3 { margin: 0 0 4px; font-size: 15px; }
.proj-case__txt p { margin: 0; font-size: 13.5px; color: var(--ink-dim); }

.proj-filter {
  margin: 0 0 30px; padding: 10px 16px; max-width: 920px; border: 1px dashed var(--line-strong); border-radius: 10px;
  font-size: 13.5px; color: var(--ink-dim); display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center;
}
.proj-filter i { color: var(--accent); }
.proj-filter button { appearance: none; background: none; border: 0; padding: 0; font: inherit; color: var(--accent); cursor: pointer; text-decoration: underline; }

.proj-sec { margin: 0 0 54px; }
.proj-sec__head { max-width: 760px; margin: 0 0 18px; }
.proj-sec__head h2 { margin: 0 0 6px; font-size: 21px; letter-spacing: -0.02em; }
.proj-sec__head p { margin: 0; font-size: 14.5px; color: var(--ink-dim); }
.proj-sec__facts { margin: 8px 0 0; display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 12.5px; color: var(--muted); }
.proj-sec__facts b { color: var(--ink-dim); font-weight: 500; }
.proj-sec__facts a { color: var(--accent); }

.proj-gallery { column-width: 270px; column-gap: 12px; }
.proj-gallery button {
  appearance: none; border: 0; padding: 0; margin: 0 0 12px; width: 100%; display: block; cursor: zoom-in;
  background: #e9ebee; border-radius: 10px; overflow: hidden; break-inside: avoid; line-height: 0;
  border: 1px solid var(--line); transition: border-color .15s;
}
.proj-gallery button:hover { border-color: var(--line-strong); }
.proj-gallery img { width: 100%; height: auto; display: block; min-height: 90px; }
.proj-gallery.is-contain img { background: #fff; }

.cat-foot { display: flex; flex-wrap: wrap; gap: 8px 26px; }
.cat-foot a:hover { color: var(--accent); }

.lb__cap {
  position: fixed; bottom: 52px; left: 50%; transform: translateX(-50%); max-width: min(720px, 86vw);
  text-align: center; font-size: 13px; color: var(--ink-dim); pointer-events: none;
}

@media (max-width: 700px) {
  .cat-chips { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 6px; scrollbar-width: none; }
  .cat-chips::-webkit-scrollbar { display: none; }
  .cat-chip { white-space: nowrap; flex: 0 0 auto; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .cat-card__body { padding: 11px 12px 13px; }
  .cat-card__name { font-size: 14.5px; }
  .cat-card__line, .cat-card__tags { display: none; }
  .proj-case { grid-template-columns: 1fr; }
  .proj-gallery { column-width: 150px; column-gap: 8px; }
  .proj-gallery button { margin-bottom: 8px; }
}
@media (max-width: 420px) {
  .cat-grid { grid-template-columns: 1fr; }
  .cat-card__line { display: -webkit-box; }
}