/* Skill Viewer — vanilla CSS, no build step.
   Design goal: clean, scannable, senior-readable (shown to non-technical
   clients). Light, calm surface; one confident accent; surface-coded badges. */

:root {
  /* palette */
  --bg:        #f6f6f4;
  --panel:     #ffffff;
  --ink:       #1c1b22;
  --ink-soft:  #5a5868;
  --ink-faint: #8e8c9a;
  --line:      #e7e6ec;
  --line-soft: #f0eff4;
  --accent:    #5b4bd6;
  --accent-weak:#ece9fb;
  --accent-ink:#4334b8;

  /* surface-coded badges */
  --s-web:     #2563c9;  --s-web-bg:     #e6effd;
  --s-cowork:  #0e9488;  --s-cowork-bg:  #d8f3ef;
  --s-code:    #7c3aed;  --s-code-bg:    #eee6fd;
  --s-unspec:  #6b6979;  --s-unspec-bg:  #ecebf0;

  --ok:   #15966a;
  --no:   #c9ccd6;

  --radius: 12px;
  --shadow: 0 1px 2px rgba(20,18,40,.04), 0 4px 16px rgba(20,18,40,.05);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: 1520px; margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  font-size: 22px; color: var(--accent);
  background: var(--accent-weak); width: 40px; height: 40px;
  display: grid; place-items: center; border-radius: 10px;
}
.brand h1 { font-size: 17px; margin: 0; letter-spacing: -.01em; }
.brand-sub { margin: 0; font-size: 13px; color: var(--ink-soft); }
.topbar-toggles { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

.seg {
  display: inline-flex; background: var(--line-soft);
  border-radius: 9px; padding: 3px; gap: 2px;
}
.seg-btn {
  border: 0; background: transparent; color: var(--ink-soft);
  font: inherit; font-size: 13px; font-weight: 500;
  padding: 6px 12px; border-radius: 7px; cursor: pointer;
  transition: background .12s, color .12s;
}
.seg-btn:hover { color: var(--ink); }
.seg-btn.is-active { background: var(--panel); color: var(--ink); box-shadow: var(--shadow); }

.explainer-link {
  font-size: 13px; color: var(--accent-ink); text-decoration: none;
  font-weight: 500; padding: 6px 10px; border-radius: 8px;
}
.explainer-link:hover { background: var(--accent-weak); }

/* ---------- layout ---------- */
.layout {
  max-width: 1520px; margin: 0 auto; padding: 24px;
  display: grid; grid-template-columns: 188px 232px 1fr; gap: 26px;
  align-items: start;
}
@media (max-width: 820px) {
  .layout { grid-template-columns: 1fr; }
  .filters { position: static !important; }
}

/* ---------- filters ---------- */
.filters {
  position: sticky; top: 84px;
  display: flex; flex-direction: column; gap: 20px;
}
.filter-block { display: flex; flex-direction: column; gap: 8px; }
.filter-label {
  font-size: 11px; font-weight: 600; letter-spacing: .06em;
  text-transform: uppercase; color: var(--ink-faint);
}
#search {
  width: 100%; padding: 9px 12px; font: inherit; font-size: 14px;
  border: 1px solid var(--line); border-radius: 9px; background: var(--panel);
  color: var(--ink);
}
#search:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-weak); }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips-scroll { max-height: 220px; overflow-y: auto; padding-right: 4px; }
.chip {
  border: 1px solid var(--line); background: var(--panel); color: var(--ink-soft);
  font: inherit; font-size: 12.5px; padding: 5px 11px; border-radius: 999px;
  cursor: pointer; transition: all .12s; display: inline-flex; align-items: center; gap: 6px;
}
.chip:hover { border-color: var(--accent); color: var(--ink); }
.chip.is-on { background: var(--accent); border-color: var(--accent); color: #fff; }
.chip .cnt { font-size: 11px; opacity: .65; }
.chip.is-on .cnt { opacity: .85; }

.clear-btn {
  border: 1px solid var(--line); background: var(--panel); color: var(--ink-soft);
  font: inherit; font-size: 13px; padding: 8px; border-radius: 9px; cursor: pointer;
}
.clear-btn:hover { color: var(--ink); border-color: var(--ink-faint); }

/* ---------- results ---------- */
.results-head {
  display: flex; align-items: baseline; gap: 12px; margin-bottom: 16px;
}
.results-count { font-size: 14px; font-weight: 600; }
.data-note { font-size: 12.5px; color: var(--ink-faint); }

.grid {
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}
body[data-density="developer"] .grid {
  grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
}

.empty {
  text-align: center; color: var(--ink-faint); padding: 60px 0; font-size: 14px;
}

/* ---------- card ---------- */
.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 16px 16px 14px; display: flex; flex-direction: column; gap: 10px;
  transition: border-color .12s, box-shadow .12s;
}
.card:hover { border-color: #dad8e4; }
.card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.card-name { font-size: 15.5px; font-weight: 650; letter-spacing: -.01em; margin: 0; }
.card-version {
  font-family: var(--mono); font-size: 11.5px; color: var(--ink-faint);
  background: var(--line-soft); padding: 2px 7px; border-radius: 6px; white-space: nowrap;
}
.card-desc { margin: 0; color: var(--ink-soft); font-size: 13.5px; }
.card-desc.clamp { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.badges { display: flex; flex-wrap: wrap; gap: 6px; }
.badge {
  font-size: 11.5px; font-weight: 600; padding: 3px 9px; border-radius: 999px;
  letter-spacing: .01em;
}
.badge.web    { color: var(--s-web);    background: var(--s-web-bg); }
.badge.cowork { color: var(--s-cowork); background: var(--s-cowork-bg); }
.badge.code   { color: var(--s-code);   background: var(--s-code-bg); }
.badge.unspec { color: var(--s-unspec); background: var(--s-unspec-bg); }

.card-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  margin-top: 2px;
}
.meta-mini { font-size: 12px; color: var(--ink-faint); display: flex; gap: 10px; flex-wrap: wrap; }
.card-actions { display: flex; gap: 8px; align-items: center; }

.btn {
  border: 1px solid var(--line); background: var(--panel); color: var(--ink);
  font: inherit; font-size: 12.5px; font-weight: 500; padding: 6px 12px;
  border-radius: 8px; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 5px;
}
.btn:hover { border-color: var(--accent); color: var(--accent-ink); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); color: #fff; }
.btn-ghost { border-color: transparent; color: var(--ink-soft); padding: 6px 8px; }
.btn-ghost:hover { background: var(--line-soft); color: var(--ink); border-color: transparent; }

/* ---------- expanded detail ---------- */
.detail { display: none; flex-direction: column; gap: 14px; border-top: 1px solid var(--line-soft); padding-top: 12px; margin-top: 2px; }
.card.is-open .detail { display: flex; }
.card.is-open .card-desc.clamp { -webkit-line-clamp: unset; }

.detail-section-label {
  font-size: 10.5px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 7px;
}

/* contents matrix */
.matrix { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px 14px; }
.matrix-item { display: flex; align-items: center; gap: 7px; font-size: 13px; color: var(--ink-soft); }
.tick { font-weight: 700; }
.tick.yes { color: var(--ok); }
.tick.no  { color: var(--no); }
.matrix-item.no { color: var(--ink-faint); }

/* requires chips */
.req-chip {
  font-family: var(--mono); font-size: 11.5px; color: var(--accent-ink);
  background: var(--accent-weak); padding: 3px 8px; border-radius: 6px;
}
.req-row, .file-row { display: flex; flex-wrap: wrap; gap: 6px; }

.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; font-size: 13px; }
.kv dt { color: var(--ink-faint); }
.kv dd { margin: 0; color: var(--ink); }
.kv dd code, .file-item { font-family: var(--mono); font-size: 12px; }
.file-item { color: var(--ink-soft); background: var(--line-soft); padding: 2px 7px; border-radius: 5px; }
.hash { font-family: var(--mono); font-size: 11px; color: var(--ink-faint); word-break: break-all; }

/* developer density: detail always shown, denser */
body[data-density="developer"] .detail { display: flex; }
body[data-density="developer"] .toggle-detail { display: none; }
body[data-density="developer"] .card-desc.clamp { -webkit-line-clamp: unset; }
body[data-density="senior"] .detail-dev-only { display: none; }

.src-tag { font-size: 11px; color: var(--ink-faint); font-family: var(--mono); }

/* ---------- footer ---------- */
.footer {
  max-width: 1520px; margin: 0 auto; padding: 28px 24px 48px;
  display: flex; justify-content: space-between; gap: 12px;
  color: var(--ink-faint); font-size: 12.5px; flex-wrap: wrap;
}
.footer code { font-family: var(--mono); background: var(--line-soft); padding: 1px 6px; border-radius: 5px; }

/* Primitive-type rail (sidebar) */
.typelist { display: flex; flex-direction: column; gap: 4px; }
.type-item {
  display: flex; justify-content: space-between; align-items: center;
  width: 100%; padding: .45rem .6rem; border: 1px solid transparent;
  border-radius: 8px; background: none; color: inherit; font: inherit;
  font-size: .9rem; cursor: pointer; text-align: left;
}
.type-item:hover { background: rgba(128,128,128,.12); }
.type-item.is-on { background: rgba(59,108,246,.15); border-color: rgba(59,108,246,.4); font-weight: 600; }
.type-item.is-empty { opacity: .45; }
.type-item .cnt { opacity: .65; font-size: .8rem; }

/* Unified sidebar: section labels + divider */
.rail-section-label {
  font-size: .7rem; letter-spacing: .09em; text-transform: uppercase;
  opacity: .5; margin: .2rem 0 .55rem; font-weight: 600;
}
.rail-divider { border: 0; border-top: 1px solid rgba(128,128,128,.25); margin: 1.1rem 0 .9rem; }

/* List view: compact single-column rows */
.grid.is-list { display: flex; flex-direction: column; gap: 8px; }
.grid.is-list .card {
  display: grid; grid-template-columns: minmax(180px, 240px) 1fr auto auto;
  gap: .9rem; align-items: center; padding: .55rem .9rem;
}
.grid.is-list .card-top { display: flex; align-items: baseline; gap: .5rem; margin: 0; }
.grid.is-list .card-desc { margin: 0; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.grid.is-list .badges { margin: 0; }
.grid.is-list .card-foot { margin: 0; }
.grid.is-list .detail { grid-column: 1 / -1; }

/* Primitive rail — leftmost column, its own nav distinct from filters */
.primitive-rail { position: sticky; top: 84px; display: flex; flex-direction: column; gap: 6px; }
@media (max-width: 820px) { .primitive-rail { position: static; } }