/* Shared TellMesh shell — top bar and layout tokens for www subpages */

:root {
  --shell-bg: #070b14;
  --shell-bg-2: #0b1220;
  --shell-line: rgba(255, 255, 255, 0.08);
  --shell-line-strong: rgba(255, 255, 255, 0.16);
  --shell-text: #f8fafc;
  --shell-muted: #94a3b8;
  --shell-brand: #8b5cf6;
  --shell-ok: #10b981;
  --shell-max: 1180px;
  --header-h: 72px;
  color-scheme: dark;
}

body.shell-page {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  color: var(--shell-text);
  background:
    radial-gradient(circle at 18% 12%, rgba(139, 92, 246, 0.18), transparent 32%),
    radial-gradient(circle at 80% 5%, rgba(99, 102, 241, 0.20), transparent 30%),
    linear-gradient(180deg, var(--shell-bg), var(--shell-bg-2) 38%, #08111f 100%);
}

.shell-page a {
  color: inherit;
  text-decoration: none;
}

.shell-page .container {
  width: min(100% - 34px, var(--shell-max));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(7, 11, 20, 0.85);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  color: var(--shell-text);
}

.topbar .nav {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.topbar .brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 780;
  letter-spacing: -0.025em;
  white-space: nowrap;
  color: var(--shell-text);
}

.topbar .brand-logo {
  display: block;
  height: 38px;
  width: auto;
  max-width: min(200px, 46vw);
  object-fit: contain;
  background: transparent;
  filter: invert(1) hue-rotate(220deg) brightness(1.25) saturate(1.4);
}

.topbar .brand-sub {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: #64748b;
  letter-spacing: 0.04em;
}

.topbar .nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
  color: var(--shell-muted);
}

.topbar .nav-links a:hover,
.topbar .nav-links a.is-active {
  color: var(--shell-text);
}

.topbar .nav-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.topbar .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--shell-line);
  border-radius: 999px;
  color: var(--shell-text);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
  cursor: pointer;
  font-weight: 690;
  font-size: 14px;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.topbar .btn:hover {
  transform: translateY(-1px);
  border-color: rgba(139, 92, 246, 0.45);
  background: rgba(255, 255, 255, 0.08);
}

.topbar .btn-primary {
  border-color: transparent;
  color: #07111f;
  background: linear-gradient(135deg, #8b5cf6, #6366f1 45%, #818cf8);
  box-shadow: 0 12px 28px rgba(99, 102, 241, 0.25);
}

.topbar .btn-ghost {
  background: transparent;
  box-shadow: none;
}

.topbar .btn.is-active {
  border-color: rgba(139, 92, 246, 0.55);
  color: var(--shell-text);
  background: rgba(255, 255, 255, 0.1);
}

.topbar .btn-primary.is-active {
  box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.35), 0 12px 28px rgba(99, 102, 241, 0.25);
}

@media (max-width: 960px) {
  .topbar .nav-links {
    display: none;
  }
}

@media (max-width: 640px) {
  .topbar .nav-actions .btn-ghost:not(.docs-sidebar-toggle) {
    display: none;
  }

  .topbar .brand-sub {
    display: none;
  }
}