/* surfnav.css — floating cross-surface launcher.
 *
 * Self-contained: declares its own tokens scoped under .surfnav-root so it
 * never collides with a host page's palette. Pulls the project fonts the host
 * page already loaded (IBM Plex Mono / Familjen Grotesk) but degrades to
 * system mono/sans if absent. Fixed-position overlay; zero layout impact on
 * the host. WCAG-AA contrast on its own dark glass surface.
 */

.surfnav-root {
  --sn-bg:        #0a1714;
  --sn-bg-2:      #0e201b;
  --sn-line:      #1e3b32;
  --sn-ink:       #d7efe5;
  --sn-ink-dim:   #8fb3a7;
  --sn-accent:    #69e5b8;
  --sn-accent-2:  #ffce4d;
  --sn-more:      #8aa0a8;   /* catch-all 'more' group — neutral steel (shared w/ surftabs) */
  --sn-shadow:    0 10px 40px rgba(0, 0, 0, .55);
  --sn-mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --sn-sans: 'Familjen Grotesk', system-ui, -apple-system, 'Segoe UI', sans-serif;
  position: fixed;
  inset: 0;
  pointer-events: none;          /* only children opt back in */
  z-index: 2147483000;           /* above virtually any host chrome */
}

/* ── floating action button ───────────────────────────────────────── */
.surfnav-fab {
  position: fixed;
  right: clamp(.75rem, 2vw, 1.5rem);
  bottom: clamp(.75rem, 2vw, 1.5rem);
  pointer-events: auto;
  display: inline-flex;
  align-items: center;
  gap: .5ch;
  padding: .55rem .85rem;
  font-family: var(--sn-mono);
  font-size: .78rem;
  letter-spacing: .06em;
  text-transform: lowercase;
  color: #06120e;
  background: var(--sn-accent);
  border: 1px solid #3fb98c;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: var(--sn-shadow);
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}
.surfnav-fab:hover { transform: translateY(-1px); background: #7df0c6; }
.surfnav-fab:active { transform: translateY(0); }
.surfnav-fab:focus-visible { outline: 2px solid var(--sn-accent-2); outline-offset: 2px; }
.surfnav-fab-glyph { font-size: .95rem; line-height: 1; }
@media (max-width: 480px) { .surfnav-fab-text { display: none; } }

/* ── scrim ────────────────────────────────────────────────────────── */
.surfnav-scrim {
  position: fixed;
  inset: 0;
  pointer-events: auto;
  background: rgba(2, 8, 6, .45);
  backdrop-filter: blur(1.5px);
}
.surfnav-scrim[hidden] { display: none; }

/* ── slide-over panel ─────────────────────────────────────────────── */
.surfnav-panel {
  position: fixed;
  top: 0;
  right: 0;
  height: 100%;
  width: min(420px, 92vw);
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, var(--sn-bg-2), var(--sn-bg));
  border-left: 1px solid var(--sn-line);
  box-shadow: var(--sn-shadow);
  color: var(--sn-ink);
  font-family: var(--sn-sans);
  animation: surfnav-in .16s ease;
}
.surfnav-panel[hidden] { display: none; }
@keyframes surfnav-in { from { transform: translateX(12px); opacity: 0; } to { transform: none; opacity: 1; } }

.surfnav-head {
  display: flex;
  align-items: center;
  gap: .75ch;
  padding: .9rem 1rem;
  border-bottom: 1px solid var(--sn-line);
}
.surfnav-title {
  font-family: var(--sn-mono);
  font-size: .95rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--sn-accent);
}
.surfnav-count {
  margin-left: auto;
  font-family: var(--sn-mono);
  font-size: .68rem;
  color: var(--sn-ink-dim);
  letter-spacing: .04em;
}
.surfnav-x {
  flex: 0 0 auto;
  width: 1.9rem; height: 1.9rem;
  display: grid; place-items: center;
  font-size: 1.2rem; line-height: 1;
  color: var(--sn-ink-dim);
  background: transparent;
  border: 1px solid var(--sn-line);
  border-radius: 6px;
  cursor: pointer;
}
.surfnav-x:hover { color: var(--sn-ink); border-color: var(--sn-accent); }

.surfnav-search {
  margin: .8rem 1rem .4rem;
  padding: .55rem .7rem;
  font-family: var(--sn-mono);
  font-size: .82rem;
  color: var(--sn-ink);
  background: #061310;
  border: 1px solid var(--sn-line);
  border-radius: 7px;
}
.surfnav-search::placeholder { color: var(--sn-ink-dim); }
.surfnav-search:focus { outline: none; border-color: var(--sn-accent); }

.surfnav-body {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: .25rem 1rem 1.5rem;
}

.surfnav-group { margin-top: 1.1rem; }
.surfnav-group-h {
  margin: 0 0 .5rem;
  font-family: var(--sn-mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  /* per-group tint via --sn-c (set inline by surfnav.js); the gold accent-2
   * stays the default so the existing five groups read exactly as before. */
  color: var(--sn-c, var(--sn-accent-2));
}
.surfnav-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .35rem;
}
@media (max-width: 360px) { .surfnav-links { grid-template-columns: 1fr; } }

.surfnav-link {
  display: flex;
  align-items: center;
  gap: .55ch;
  padding: .42rem .55rem;
  font-size: .82rem;
  text-decoration: none;
  color: var(--sn-ink);
  background: rgba(255, 255, 255, .015);
  border: 1px solid var(--sn-line);
  border-radius: 7px;
  transition: border-color .1s ease, background .1s ease, transform .1s ease;
  min-width: 0;
}
.surfnav-link:hover {
  border-color: var(--sn-accent);
  background: rgba(105, 229, 184, .08);
  transform: translateX(1px);
}
.surfnav-link:focus-visible { outline: 2px solid var(--sn-accent-2); outline-offset: 1px; }
.surfnav-link.is-here {
  border-color: var(--sn-accent);
  background: rgba(105, 229, 184, .14);
  color: #fff;
}
.surfnav-dot {
  flex: 0 0 auto;
  width: 6px; height: 6px;
  border-radius: 50%;
  /* per-group tint via --sn-c (set inline by surfnav.js); green accent default
   * keeps the existing groups' dots identical to before. */
  background: var(--sn-c, var(--sn-accent));
  opacity: .55;
}
.surfnav-link.is-here .surfnav-dot { opacity: 1; box-shadow: 0 0 6px var(--sn-c, var(--sn-accent)); }
.surfnav-link-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.surfnav-empty {
  margin-top: 1.2rem;
  font-size: .82rem;
  color: var(--sn-ink-dim);
}

@media (prefers-reduced-motion: reduce) {
  .surfnav-panel { animation: none; }
  .surfnav-fab, .surfnav-link { transition: none; }
}