/* ==========================================================================
   MAIN STYLESHEET
   Hand-written utilities that sit on top of Tailwind for effects Tailwind's
   utility classes don't cover cleanly: glassmorphism, custom scrollbars,
   skeleton shimmer, and app-wide transition defaults.
   ========================================================================== */

html, body {
  background: var(--surface-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

/* ---- Auth gate: app pages (body[data-page]) stay invisible until bootstrapApp()
   has confirmed a Supabase session and adds .auth-ready, so a signed-out
   visitor never sees a flash of the dashboard shell before the redirect. ---- */
body[data-page]:not(.auth-ready) { visibility: hidden; }

/* ---- Skip link: invisible until keyboard-focused, then jumps above the
   sidebar so keyboard users don't have to tab through 20 nav links to
   reach page content. ---- */
.skip-link {
  position: fixed;
  top: -3rem;
  left: 1rem;
  z-index: 100;
  background: var(--color-primary-600);
  color: #fff;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  transition: top var(--duration-fast) var(--ease-out);
}
.skip-link:focus {
  top: 1rem;
}

h1, h2, h3, h4, .font-display {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
}

/* ---- Glassmorphism surfaces (used for topbar, command palette, modals) ---- */
.glass {
  background: color-mix(in srgb, var(--surface-raised) 72%, transparent);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid color-mix(in srgb, var(--border-subtle) 80%, transparent);
}

/* ---- Card primitive ---- */
.card {
  background: var(--surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--duration-base) var(--ease-out),
              transform var(--duration-base) var(--ease-out);
}
.card-hover:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* ---- Custom scrollbar ---- */
* { scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
*::-webkit-scrollbar { width: 6px; height: 6px; }
*::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 999px; }
*::-webkit-scrollbar-track { background: transparent; }

/* ---- Skeleton loading shimmer ---- */
.skeleton {
  position: relative;
  overflow: hidden;
  background: var(--surface-sunken);
  border-radius: var(--radius-md);
}
.skeleton::after {
  content: "";
  position: absolute; inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--text-muted) 18%, transparent), transparent);
  animation: shimmer 1.6s infinite;
}
@keyframes shimmer { 100% { transform: translateX(100%); } }

/* ---- Route transition (fade+rise for injected page content) ---- */
.route-enter { animation: routeEnter var(--duration-slow) var(--ease-out) both; }
@keyframes routeEnter {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---- Toast stack ---- */
#toast-root {
  position: fixed;
  top: 1rem; right: 1rem;
  z-index: 100;
  display: flex; flex-direction: column; gap: 0.5rem;
  pointer-events: none;
}
#toast-root > * { pointer-events: auto; }

/* ---- Sidebar active nav indicator ---- */
.nav-link {
  position: relative;
  transition: background var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out);
}
.nav-link.active {
  background: var(--color-primary-50);
  color: var(--color-primary-600);
  font-weight: 600;
}
html.dark .nav-link.active {
  background: color-mix(in srgb, var(--color-primary-500) 16%, transparent);
  color: var(--color-primary-300);
}

/* ---- Focus ring (accessibility) ---- */
:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}