/* ============================================================================
   Synapse Bio · app.css — shell chrome (header, nav, layout). Tokens in tokens.css.
   ============================================================================ */
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.app {
  height: 100dvh; display: flex; flex-direction: column; overflow: hidden;
  background: var(--canvas);
}

/* --- top bar --- */
.top {
  display: flex; align-items: center; gap: var(--s-md);
  padding: var(--s-xs) var(--s-md);
  border-bottom: 1px solid var(--hairline);
  background: var(--parchment); flex: 0 0 auto;
}
.top-brand { display: flex; align-items: baseline; gap: 6px; }
.brand-mark { color: var(--t-protein); font-size: 18px; }
.brand-name { font-family: var(--font-display); font-weight: var(--w-semibold); letter-spacing: -.3px; }
.brand-bio { color: var(--t-protein); font-weight: var(--w-semibold); }
.top-search { flex: 1 1 240px; max-width: 360px; }
.search-input {
  width: 100%; padding: 7px 12px; border: 1px solid var(--hairline);
  border-radius: var(--r-pill); background: var(--canvas); outline: none;
}
.search-input:focus-visible { border-color: var(--blue-focus); }

/* --- segmented view switcher --- */
.view-switch {
  display: flex; gap: 2px; padding: 3px; margin: 0 auto;
  background: var(--divider); border-radius: var(--r-pill);
}
.view-switch-btn {
  padding: 6px 16px; border-radius: var(--r-pill); color: var(--ink-80);
  font-size: var(--fs-caption); font-weight: var(--w-semibold); white-space: nowrap;
}
.view-switch-btn[aria-selected="true"] { background: var(--canvas); color: var(--ink); box-shadow: 0 1px 3px rgba(0,0,0,.08); }

.top-actions { flex: 0 0 auto; }
.pill {
  display: inline-block; padding: 4px 12px; border-radius: var(--r-pill);
  background: rgba(240,140,0,.12); color: #b35900; font-size: var(--fs-caption); font-weight: var(--w-semibold);
}

/* --- stage + view switching --- */
.stage { flex: 1 1 auto; min-height: 0; position: relative; }
.view { display: none; height: 100%; }
.view[data-active="true"] { display: block; }

@media (max-width: 768px) {
  .top { flex-wrap: wrap; }
  .view-switch { order: 3; width: 100%; overflow-x: auto; justify-content: flex-start; }
}

/* ============================================================================
   Lab Noir shell polish — grain, glass, glow focus, telemetry numerals.
   ============================================================================ */
/* film grain — premium texture on flat dark surfaces (Linear/Vercel trick) */
.grain {
  position: fixed; inset: 0; z-index: 1; pointer-events: none; opacity: .035; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
html.light .grain { opacity: .02; }

/* glass header */
.top {
  background: color-mix(in srgb, var(--parchment) 75%, transparent);
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  position: relative; z-index: 10;
}
.brand-mark { filter: drop-shadow(0 0 6px var(--accent-glow)); }
.brand-bio { color: var(--accent); text-shadow: 0 0 12px color-mix(in srgb, var(--accent-glow) 60%, transparent); }

/* segmented view switcher — glow on active */
.view-switch { background: color-mix(in srgb, var(--surface-2) 80%, transparent); border: 1px solid var(--line-soft); }
.view-switch-btn[aria-selected="true"] {
  background: var(--accent-dim); color: var(--ink);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 40%, transparent), 0 0 16px color-mix(in srgb, var(--accent-glow) 30%, transparent);
}

/* pill = mono telemetry readout */
.pill { font-family: var(--font-mono); font-variant-numeric: tabular-nums; letter-spacing: -0.02em;
  background: color-mix(in srgb, var(--candidate) 14%, transparent); color: var(--candidate-glow);
  border: 1px solid color-mix(in srgb, var(--candidate) 30%, transparent); }

.search-input { background: var(--surface-2); border-color: var(--line); color: var(--ink); }
.search-input::placeholder { color: var(--ink-48); }

/* designed focus rings — accent glow instead of hard outline */
:focus-visible { outline: none; box-shadow: 0 0 0 2px var(--canvas), 0 0 0 4px color-mix(in srgb, var(--accent-glow) 70%, transparent); border-radius: var(--r-xs); }

/* view crossfade */
::view-transition-old(root), ::view-transition-new(root) { animation-duration: .35s; }

/* dark, slim scrollbars */
* { scrollbar-width: thin; scrollbar-color: var(--chip) transparent; }
*::-webkit-scrollbar { width: 9px; height: 9px; }
*::-webkit-scrollbar-thumb { background: var(--chip); border-radius: 9px; border: 2px solid transparent; background-clip: content-box; }
*::-webkit-scrollbar-thumb:hover { background: var(--ink-48); }

/* ── project switcher (SaaS spine) ──────────────────────────────────────── */
.project-chip { display: inline-flex; align-items: center; gap: 6px; margin-left: 10px; padding: 4px 10px; border-radius: var(--r-pill); border: 1px solid var(--line); background: var(--surface-2); color: var(--ink-80); font-size: var(--fs-caption); font-weight: var(--w-semibold); max-width: 220px; }
.project-chip:hover { background: var(--elevated); color: var(--ink); }
.proj-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.proj-caret { color: var(--ink-48); font-size: 10px; }
#project-menu { position: relative; }
.proj-menu { position: absolute; top: 6px; left: 0; z-index: 120; min-width: 240px; padding: 6px; border-radius: var(--r-md); background: var(--glass-bg); -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur); border: 1px solid var(--line); box-shadow: var(--shadow-product); }
.proj-menu-head { padding: 6px 10px 4px; }
.proj-item { display: block; width: 100%; text-align: left; padding: 8px 10px; border-radius: var(--r-sm); font-size: var(--fs-caption); color: var(--ink-80); }
.proj-item:hover { background: var(--surface-2); color: var(--ink); }
.proj-item.is-active { background: var(--accent-dim); color: var(--ink); }
.proj-menu-actions { margin-top: 4px; padding-top: 4px; border-top: 1px solid var(--line-soft); display: flex; flex-direction: column; }
.proj-menu-actions button { text-align: left; padding: 7px 10px; border-radius: var(--r-sm); font-size: var(--fs-caption); color: var(--accent); }
.proj-menu-actions button:hover { background: var(--surface-2); }