/* Layout — shell, header, nav, page structure */

body.auth-layout {
  display: flex;
  flex-direction: column;
}

body.auth-layout .app-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--space-md);
}

.app-shell {
  position: relative;
  z-index: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  background: color-mix(in srgb, var(--background-base) 85%, transparent);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-default);
}

.app-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  width: 100%;
  max-width: calc(var(--max-width) + var(--space-lg) * 2);
  margin: 0 auto;
}

.app-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--foreground);
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  transition: opacity var(--duration-fast) var(--ease-out-expo);
}

.app-brand:hover {
  color: var(--foreground);
  opacity: 0.9;
}

.app-brand img {
  height: 2rem;
  width: auto;
  border-radius: var(--radius-sm);
}

.app-nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  background: var(--surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--foreground);
  cursor: pointer;
  transition:
    background var(--duration-fast) var(--ease-out-expo),
    border-color var(--duration-fast) var(--ease-out-expo);
}

.app-nav-toggle:hover {
  background: var(--surface-hover);
  border-color: var(--border-hover);
}

.app-nav-toggle__icon {
  display: block;
  width: 1.125rem;
  height: 1.125rem;
}

.app-nav-toggle__icon--close {
  display: none;
}

.app-nav-toggle[aria-expanded="true"] .app-nav-toggle__icon--open {
  display: none;
}

.app-nav-toggle[aria-expanded="true"] .app-nav-toggle__icon--close {
  display: block;
}

.app-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav-link {
  color: var(--foreground-muted);
  font-size: 0.875rem;
  font-weight: 500;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition:
    color var(--duration-fast) var(--ease-out-expo),
    background var(--duration-fast) var(--ease-out-expo);
}

.nav-link:hover {
  color: var(--foreground);
  background: var(--surface-hover);
}

.nav-logout {
  margin: 0;
}

.app-main {
  position: relative;
  z-index: 1;
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg) var(--space-2xl);
  width: 100%;
}

.page-header {
  margin-bottom: var(--space-xl);
}

.page-header--hero {
  margin-bottom: var(--space-2xl);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.mt-md { margin-top: var(--space-md); }
.mb-0 { margin-bottom: 0; }
.mb-md { margin-bottom: var(--space-md); }

/* Bento grid */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.bento-grid__span-3 {
  grid-column: span 3;
}

.bento-grid__span-2 {
  grid-column: span 2;
}

.bento-grid__span-4 {
  grid-column: span 4;
}

@media (max-width: 768px) {
  .app-nav-toggle {
    display: inline-flex;
  }

  .app-header {
    padding: 0 var(--space-md);
    flex-wrap: wrap;
    height: auto;
    min-height: var(--header-h);
  }

  .app-header__inner {
    flex-wrap: wrap;
  }

  .app-nav {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    padding: var(--space-sm) 0 var(--space-md);
    gap: var(--space-xs);
    border-top: 1px solid var(--border-default);
    margin-top: var(--space-sm);
  }

  .app-nav.is-open {
    display: flex;
  }

  .app-nav .nav-link {
    padding: var(--space-md);
  }

  .app-nav .nav-logout {
    width: 100%;
    margin-top: var(--space-sm);
  }

  .app-nav .nav-logout button {
    width: 100%;
  }

  .app-main {
    padding: var(--space-lg) var(--space-md) var(--space-xl);
  }

  .bento-grid {
    grid-template-columns: 1fr;
  }

  .bento-grid__span-2,
  .bento-grid__span-3,
  .bento-grid__span-4 {
    grid-column: span 1;
  }
}

@media (max-width: 640px) {
  .page-header.cluster.justify-between {
    flex-direction: column;
    align-items: flex-start;
  }
}