* { box-sizing: border-box; }
[hidden] { display: none !important; }

html {
  min-height: 100%;
  background: var(--background);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-size: 14px;
  line-height: 1.45;
}

button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
img, svg { display: block; }

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.muted { color: var(--text-muted); }
.tabular { font-variant-numeric: tabular-nums; }

h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 6px; font-size: 26px; line-height: 1.23; letter-spacing: -0.025em; }
h2 { margin-bottom: 4px; font-size: 18px; line-height: 1.35; }
p { margin-bottom: 0; }

.eyebrow {
  margin-bottom: 6px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.app-layout {
  display: grid;
  min-height: 100vh;
  grid-template-columns: 232px minmax(0, 1fr);
  grid-template-rows: 64px minmax(0, 1fr);
  grid-template-areas: "sidebar topbar" "sidebar main";
}

.sidebar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  grid-area: sidebar;
  flex-direction: column;
  width: 232px;
  height: 100vh;
  padding: 16px 12px;
  overflow: hidden;
  background: var(--sidebar);
  border-right: 1px solid var(--border);
  transition: width 160ms ease;
}

.sidebar-brand {
  display: flex;
  min-height: 40px;
  align-items: center;
  justify-content: space-between;
  padding: 0 4px 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
  white-space: nowrap;
}

.sidebar-nav { display: grid; gap: 4px; margin-top: 16px; }
.nav-section {
  margin: 18px 10px 4px;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-item {
  display: flex;
  min-height: 40px;
  align-items: center;
  gap: 12px;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: 4px;
  color: var(--text-muted);
  text-decoration: none;
  white-space: nowrap;
}

.nav-item svg { width: 19px; height: 19px; flex: none; }
.nav-item:hover:not(.disabled) { color: var(--text); background: var(--surface-muted); }
.nav-item.active { color: var(--primary); background: var(--surface-muted); border-color: var(--border); font-weight: 600; }
.nav-item.disabled { opacity: 0.58; cursor: not-allowed; }

.sidebar-status {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding: 12px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-muted);
  font-size: 12px;
  white-space: nowrap;
}

.status-dot { display: inline-block; width: 7px; height: 7px; flex: none; border-radius: 50%; background: var(--success); }

.sidebar-account {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  padding: 12px 8px 2px;
  border-top: 1px solid var(--border);
  white-space: nowrap;
}

.account-copy { display: grid; overflow: hidden; }
.account-copy strong, .account-copy small { overflow: hidden; text-overflow: ellipsis; }
.account-copy small { color: var(--text-muted); }

.topbar {
  position: sticky;
  top: 0;
  z-index: 15;
  display: flex;
  grid-area: topbar;
  height: 64px;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: color-mix(in srgb, var(--background) 92%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.topbar-context { font-size: 13px; font-weight: 600; color: var(--text-muted); }
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.mobile-brand { display: none; }

.main-content {
  grid-area: main;
  width: 100%;
  max-width: 1600px;
  padding: 32px 24px 48px;
  margin: 0 auto;
}

:root[data-sidebar="collapsed"] .app-layout { grid-template-columns: 72px minmax(0, 1fr); }
:root[data-sidebar="collapsed"] .sidebar { width: 72px; }
:root[data-sidebar="collapsed"] .brand-label,
:root[data-sidebar="collapsed"] .nav-item span,
:root[data-sidebar="collapsed"] .nav-section,
:root[data-sidebar="collapsed"] .sidebar-status span:last-child,
:root[data-sidebar="collapsed"] .account-copy { display: none; }
:root[data-sidebar="collapsed"] .sidebar-brand { justify-content: center; }
:root[data-sidebar="collapsed"] .sidebar-brand .brand { display: none; }
:root[data-sidebar="collapsed"] .nav-item { justify-content: center; padding-inline: 0; }
:root[data-sidebar="collapsed"] .sidebar-status,
:root[data-sidebar="collapsed"] .sidebar-account { justify-content: center; padding-inline: 0; }

.mobile-nav { display: none; }

.auth-page { display: grid; min-height: 100vh; grid-template-rows: auto 1fr auto; }
.auth-header { padding: 24px; }
.auth-main { display: grid; place-items: center; padding: 32px 16px 64px; }
.auth-footer { padding: 20px; color: var(--text-muted); font-size: 12px; text-align: center; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}