.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

.page-main {
  flex: 1;
  padding: var(--space-4) 0 var(--space-5);
}

.page-shell {
  display: grid;
  gap: var(--space-3);
}

.page-shell--narrow {
  max-width: 760px;
  margin: 0 auto;
}

.page-shell--auth {
  max-width: 620px;
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(230, 238, 241, 0.85);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  min-height: 84px;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: var(--space-3);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
}

.brand__mark {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
}

.brand__content {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.brand__eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.brand__title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-heading);
  line-height: 1.15;
}

.page-context {
  display: inline-flex;
  align-items: center;
  justify-self: end;
  gap: 10px;
  min-width: 0;
  max-width: 100%;
  padding: 11px 16px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow-xs);
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 600;
}

.page-context__icon {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(42, 167, 161, 0.14), rgba(63, 182, 175, 0.08));
  color: var(--color-primary);
  flex-shrink: 0;
}

.messages {
  display: grid;
  gap: 12px;
  margin-bottom: var(--space-3);
}

.section-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.section-heading--compact {
  align-items: center;
}

.section-heading__text {
  display: grid;
  gap: 10px;
}

.section-subtitle {
  max-width: 760px;
  color: var(--color-text-muted);
}

.site-footer {
  border-top: 1px solid rgba(230, 238, 241, 0.85);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(10px);
}

.site-footer__inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.site-footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-heading);
  font-weight: 700;
}

.site-footer__mark {
  width: 30px;
  height: 30px;
}