:root {
  --page-gutter-desktop: var(--space-5);  /* Reduced from space-6 (2rem) to space-5 (1.5rem) for tighter alignment */
  --page-gutter-mobile: var(--space-4);

  --section-gap: var(--space-5);
  --block-gap: var(--space-4);
  --stack-gap: 0.75rem;
  --inline-gap: 0.5rem;

  /* Fluid layout tokens (Phase 1: opt-in, not used yet) */
  --sidebar-w: clamp(240px, 18vw, 280px);
  --sidebar-w-collapsed: clamp(64px, 6vw, 80px);

  --table-min-domains: clamp(680px, 52vw, 720px);

  --col-actions: clamp(72px, 6vw, 96px);
  --col-check: clamp(40px, 3.2vw, 48px);

  --menu-min: clamp(200px, 18vw, 240px);
  --menu-max: min(92vw, 28rem);
}

.page-shell {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--page-gutter-desktop);
  padding-block: var(--space-6);
}

@media (max-width: 768px) {
  .page-shell {
    padding-inline: var(--page-gutter-mobile);
    padding-block: var(--space-4);
  }
}

/* Dashboard layouts: remove page-shell padding on desktop to let content expand */
@media (min-width: 1024px) {
  .page-shell.dashboard-shell {
    padding-inline: 0;
    padding-block: 0;
  }
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--inline-gap);
  margin-bottom: var(--section-gap);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
}

/* External/public pages: stack title + lead vertically (no flex-row shrink) */
.page-header:not(:has(.page-header__title)) {
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
}

@media (max-width: 768px) {
  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3); /* More breathing room between heading and button on mobile */
  }

  .page-header h1 {
    font-size: var(--fs-lg);
  }

  .page-header p {
    font-size: var(--fs-sm);
  }

  /* Move action buttons to the right on mobile for thumb reach */
  .page-header__actions {
    align-self: flex-end;
  }
}

.controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--inline-gap);
  margin-bottom: var(--block-gap);
}

@media (max-width: 768px) {
  .controls-row {
    flex-direction: column;
    align-items: stretch;
  }
}

.divider-text {
  position: relative;
  text-align: center;
  margin: var(--space-2) 0;
}

.divider-text::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border);
  z-index: 0;
}

.divider-text > * {
  position: relative;
  display: inline-block;
  padding: 0 var(--space-2);
  background: var(--bg);
  z-index: 1;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 960px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

.stack-list {
  display: flex;
  flex-direction: column;
  gap: var(--block-gap);
}

.table-scroll {
  width: 100%;
  overflow-x: auto;
  /* Phase 4: Container queries - table adapts to container width */
  container-type: inline-size;
  container-name: table;
}

/* Note: table min-width is controlled by variants (.table--domains, .table--redirects) in tables.css */

.layout-shell {
  min-height: 100vh;
  background: var(--bg);
}

@media (min-width: 1024px) {
  .layout-shell {
    display: grid;
    grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  }

  /* Phase 2.1: Collapsed sidebar state */
  .layout-shell[data-sidebar="collapsed"] {
    grid-template-columns: var(--sidebar-w-collapsed) minmax(0, 1fr);
  }

  .layout-sidebar {
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-subtle);
    padding: var(--space-5) var(--space-4);
  }

  .layout-main {
    max-width: 1200px;
    margin-inline: auto;
    padding-inline: var(--page-gutter-desktop);
    padding-block: var(--space-6);
  }
}

@media (max-width: 1023px) {
  .layout-shell {
    display: block;
  }

  .layout-sidebar {
    display: none;
  }

  .layout-main {
    padding-inline: var(--page-gutter-mobile);
    padding-block: var(--space-4);
  }
}