/* FeistTech shared shell: slim bar, directory menu, search.
   Loaded by /site.js on every page. All selectors are ft- prefixed so
   they never collide with an app's own styles. */
:root {
  --ft-bg: #0b0c10;
  --ft-panel: #0e1015;
  --ft-line: #23262f;
  --ft-text: #e4e2dc;
  --ft-muted: #8d9099;
  --ft-gold: #c9a84c;
  --ft-mono: "Space Mono", ui-monospace, Menlo, monospace;
  --ft-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.ft-bar, .ft-tab, .ft-menu, .ft-search, .ft-bar *, .ft-menu *, .ft-search * {
  box-sizing: border-box;
  font-family: var(--ft-sans);
  line-height: 1.4;
  letter-spacing: normal;
  text-transform: none;
}

/* ── Bar (content pages) ── */
.ft-bar {
  position: sticky; top: 0; z-index: 2147483000;
  display: flex; align-items: center; gap: 4px;
  height: 44px; padding: 0 16px;
  background: rgba(11, 12, 16, 0.92);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--ft-line);
  color: var(--ft-text); font-size: 13px;
}
.ft-brand {
  font-family: var(--ft-mono); font-size: 12px; font-weight: 700;
  letter-spacing: .14em; color: var(--ft-gold); text-decoration: none;
  margin-right: 14px; white-space: nowrap;
}
.ft-link {
  background: none; border: 0; color: var(--ft-muted); cursor: pointer;
  font-size: 13px; padding: 8px 10px; border-radius: 6px; text-decoration: none;
}
.ft-link:hover, .ft-link[aria-expanded="true"] { color: var(--ft-text); background: #ffffff0d; }
.ft-spacer { flex: 1; }
.ft-searchbtn {
  display: flex; align-items: center; gap: 8px;
  background: #ffffff08; border: 1px solid var(--ft-line); border-radius: 6px;
  color: var(--ft-muted); font-size: 12px; padding: 6px 10px; cursor: pointer;
}
.ft-searchbtn:hover { color: var(--ft-text); border-color: #3a3e49; }
.ft-kbd { font-family: var(--ft-mono); font-size: 10px; border: 1px solid var(--ft-line); border-radius: 3px; padding: 0 4px; }

/* ── Tab (full-screen apps): a small handle hanging from the top edge ── */
.ft-tab {
  position: fixed; top: 0; left: 50%; transform: translateX(-50%);
  z-index: 2147483000;
  background: rgba(11, 12, 16, 0.88);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--ft-line); border-top: 0; border-radius: 0 0 8px 8px;
  color: var(--ft-gold); font-family: var(--ft-mono); font-size: 10px;
  letter-spacing: .14em; padding: 6px 14px 7px; cursor: pointer; opacity: 1; font-size: 11px; border-color: #c9a84c66;
}
.ft-tab:hover, .ft-tab:focus-visible { opacity: 1; }

/* ── Directory menu ── */
.ft-menu {
  position: fixed; z-index: 2147483001; top: 48px; left: 16px;
  width: min(840px, calc(100vw - 32px)); max-height: calc(100vh - 64px); overflow: auto;
  background: var(--ft-panel); border: 1px solid var(--ft-line); border-radius: 10px;
  box-shadow: 0 16px 48px #000a; padding: 18px 20px;
  display: none; grid-template-columns: repeat(4, 1fr); gap: 8px 24px;
  color: var(--ft-text);
}
.ft-menu.open { display: grid; }
.ft-menu h3 {
  margin: 0 0 6px; font-family: var(--ft-mono); font-size: 10px; font-weight: 400;
  letter-spacing: .14em; text-transform: uppercase; color: var(--ft-gold);
}
.ft-menu a { display: block; padding: 5px 0; color: var(--ft-text); text-decoration: none; font-size: 13px; }
.ft-menu a small { display: block; color: var(--ft-muted); font-size: 11px; }
.ft-menu a:hover { color: var(--ft-gold); }
.ft-menu a[aria-current="page"] { color: var(--ft-gold); }

/* ── Search palette ── */
.ft-search {
  position: fixed; inset: 0; z-index: 2147483002; display: none;
  background: #0008; padding: 12vh 16px 16px;
}
.ft-search.open { display: block; }
.ft-search-box {
  max-width: 560px; margin: 0 auto; background: var(--ft-panel);
  border: 1px solid var(--ft-line); border-radius: 10px; overflow: hidden;
  box-shadow: 0 24px 64px #000c;
}
.ft-search input {
  width: 100%; border: 0; border-bottom: 1px solid var(--ft-line); outline: 0;
  background: transparent; color: var(--ft-text); font-size: 15px; padding: 14px 16px;
}
.ft-results { list-style: none; margin: 0; padding: 6px; max-height: 55vh; overflow: auto; }
.ft-results a {
  display: flex; justify-content: space-between; gap: 12px; align-items: baseline;
  padding: 8px 10px; border-radius: 6px; color: var(--ft-text); text-decoration: none; font-size: 13px;
}
.ft-results a small { color: var(--ft-muted); font-size: 11px; white-space: nowrap; }
.ft-results a.sel, .ft-results a:hover { background: #ffffff0f; color: var(--ft-gold); }
.ft-empty { padding: 14px 16px; color: var(--ft-muted); font-size: 13px; }

@media (max-width: 640px) {
  .ft-bar .ft-link.ft-sec { display: none; }
  .ft-searchbtn .ft-kbd, .ft-searchbtn .ft-label { display: none; }
  .ft-menu {
    top: auto; bottom: 0; left: 0; width: 100vw; max-height: 75vh;
    border-radius: 14px 14px 0 0; grid-template-columns: 1fr; padding-bottom: 28px;
    box-shadow: 0 0 0 100vmax #000a;
  }
  .ft-search { padding-top: 8vh; }
}