/*
 * Atlas product theme
 *
 * This file is intentionally loaded after styles.css. It is the visual contract
 * for the whole product: semantic colors, typography, controls, navigation,
 * surfaces, feedback, and responsive behavior. Page-specific CSS should use
 * these tokens instead of introducing a new visual language.
 */

:root {
  color-scheme: light;

  /* Brand and semantic color system */
  --atlas-canvas: #f4f2ec;
  --atlas-surface: #ffffff;
  --atlas-surface-subtle: #f8faf9;
  --atlas-surface-muted: #edf3f4;
  --atlas-text: #102f46;
  --atlas-text-soft: #607480;
  --atlas-text-muted: #81909a;
  --atlas-border: #d5e0e4;
  --atlas-border-strong: #bfd0d7;
  --atlas-accent: #147da4;
  --atlas-accent-hover: #0d698d;
  --atlas-accent-strong: #0b5378;
  --atlas-accent-soft: #e7f4f8;
  --atlas-navy: #092946;
  --atlas-success: #217454;
  --atlas-success-soft: #e8f6ef;
  --atlas-warning: #91631b;
  --atlas-warning-soft: #fff6df;
  --atlas-danger: #a4463e;
  --atlas-danger-soft: #fff1ee;
  --atlas-focus: #168db4;

  /* Type scale */
  --atlas-font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --atlas-font-display: Georgia, "Times New Roman", serif;
  --atlas-type-kicker: .5625rem;
  --atlas-type-meta: .6875rem;
  --atlas-type-control: .75rem;
  --atlas-type-body: .875rem;
  --atlas-type-body-lg: 1rem;
  --atlas-type-heading-sm: 1.25rem;
  --atlas-type-heading-md: 1.75rem;
  --atlas-type-page: clamp(2.375rem, 5vw, 3.625rem);

  /* Spacing and shape */
  --atlas-space-1: 4px;
  --atlas-space-2: 8px;
  --atlas-space-3: 12px;
  --atlas-space-4: 16px;
  --atlas-space-5: 20px;
  --atlas-space-6: 24px;
  --atlas-space-8: 32px;
  --atlas-space-10: 40px;
  --atlas-radius-sm: 8px;
  --atlas-radius-md: 11px;
  --atlas-radius-lg: 16px;
  --atlas-control-height: 2.5rem;
  --atlas-icon-control: 2.125rem;
  --atlas-shadow-sm: 0 4px 14px rgba(8, 37, 58, .045);
  --atlas-shadow-md: 0 14px 38px rgba(8, 37, 58, .085);

  /* Backward-compatible aliases used throughout the existing application. */
  --ink: var(--atlas-text);
  --ink-soft: var(--atlas-text-soft);
  --muted: var(--atlas-text-muted);
  --paper: var(--atlas-canvas);
  --surface: var(--atlas-surface-subtle);
  --surface-strong: var(--atlas-surface);
  --line: var(--atlas-border);
  --line-soft: #e8edef;
  --navy: var(--atlas-accent-strong);
  --navy-dark: var(--atlas-navy);
  --focus: var(--atlas-focus);
  --font-display: var(--atlas-font-display);
  --shadow: var(--atlas-shadow-sm);
  --shadow-lg: var(--atlas-shadow-md);
  --radius-sm: var(--atlas-radius-sm);
  --radius-md: var(--atlas-radius-md);
  --radius-lg: var(--atlas-radius-lg);
}

/* Large is intentionally editorial rather than a blanket 125% zoom. */
html { font-size: 118.75%; }
html[data-interface-size="standard"] { font-size: 100%; }
html[data-interface-size="comfortable"] { font-size: 106.25%; }
html[data-interface-size="large"] { font-size: 118.75%; }

html[data-interface-size="comfortable"] { --sidebar-width: 264px; }
html[data-interface-size="large"] { --sidebar-width: 284px; }

html[data-interface-size="large"] {
  /* Preserve hierarchy: large reading text with restrained chrome and metadata. */
  --menu-type-primary: var(--atlas-type-body);
  --menu-type-item: var(--atlas-type-control);
  --menu-type-meta: var(--atlas-type-meta);
  --atlas-shadow-sm: 0 5px 16px rgba(8, 37, 58, .05);
  --atlas-shadow-md: 0 16px 42px rgba(8, 37, 58, .09);
}

html.atlas-reduced-motion *,
html.atlas-reduced-motion *::before,
html.atlas-reduced-motion *::after {
  scroll-behavior: auto !important;
  animation-duration: .01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: .01ms !important;
}

html,
body {
  max-width: 100%;
  overflow-x: hidden;
  color: var(--atlas-text);
  background: var(--atlas-canvas);
  font-family: var(--atlas-font-sans);
  text-rendering: optimizeLegibility;
}

@media (max-width: 760px) {
  /* Keep native mobile controls comfortably tappable and prevent iOS input zoom. */
  :where(input:not([type="checkbox"]):not([type="radio"]), textarea, select) {
    min-height: 2.75rem;
    font-size: 1rem !important;
  }

  :where(button, [role="button"]) {
    min-height: 2.75rem;
  }
}

button,
input,
textarea,
select {
  font-family: inherit;
}

button,
a,
input,
textarea,
select {
  -webkit-tap-highlight-color: transparent;
}

:where(button, a, input, textarea, select):focus-visible {
  outline: 2px solid var(--atlas-focus);
  outline-offset: 2px;
}

::selection {
  color: #fff;
  background: var(--atlas-accent);
}

/* Shared editorial hierarchy */
.eyebrow,
.page-header .eyebrow,
.library-masthead .eyebrow,
.edition-page-header .eyebrow,
.memory-page-header .eyebrow,
.extensions-hero > div > p,
.business-space-page > header > p,
.atlas-topic-page-hero .eyebrow {
  margin-bottom: var(--atlas-space-2);
  color: var(--atlas-accent-strong);
  font-size: var(--atlas-type-kicker);
  font-weight: 850;
  letter-spacing: .17em;
  line-height: 1.3;
  text-transform: uppercase;
}

.page-header h1,
.settings-header h1,
.library-masthead h1,
.edition-page-header h1,
.memory-page-header h1,
.extensions-hero h1,
.business-space-page > header h1,
.atlas-topic-page-hero h1 {
  margin-top: 0;
  color: var(--atlas-text);
  font-family: var(--atlas-font-display);
  font-size: var(--atlas-type-page);
  font-weight: 500;
  letter-spacing: -.035em;
  line-height: 1.02;
}

.page-header > p:not(.eyebrow),
.settings-header > div:first-child > p:last-child,
.library-masthead > div > p:last-child,
.edition-page-header > div > p:not(.eyebrow),
.memory-page-header p:not(.eyebrow),
.extensions-hero > div > span,
.business-space-page > header > span,
.atlas-topic-page-hero > div > p:not(.eyebrow) {
  color: var(--atlas-text-soft);
  font-size: var(--atlas-type-body-lg);
  line-height: 1.6;
}

.page h2,
.settings-page h2,
.library-page h2,
.edition-page h2,
.memory-page h2,
.extensions-workspace h2,
.business-space-page h2,
.atlas-topic-page h2 {
  color: var(--atlas-text);
}

/* Shared action controls */
.primary-button,
.secondary-button {
  display: inline-flex;
  min-height: var(--atlas-control-height);
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 14px;
  border-radius: var(--atlas-radius-sm);
  font-size: var(--atlas-type-control);
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  transition: border-color 140ms ease, background 140ms ease, color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.primary-button {
  border-color: var(--atlas-accent-strong);
  color: #fff;
  background: var(--atlas-accent-strong);
  box-shadow: 0 2px 5px rgba(9, 47, 70, .1);
}

.primary-button:hover:not(:disabled) {
  border-color: var(--atlas-accent-hover);
  background: var(--atlas-accent-hover);
  box-shadow: 0 5px 13px rgba(9, 47, 70, .15);
  transform: translateY(-1px);
}

.secondary-button {
  border-color: var(--atlas-border-strong);
  color: var(--atlas-text);
  background: var(--atlas-surface);
}

.secondary-button:hover:not(:disabled) {
  border-color: var(--atlas-accent);
  color: var(--atlas-accent-strong);
  background: var(--atlas-accent-soft);
}

:where(.primary-button, .secondary-button):disabled {
  opacity: .48;
  cursor: not-allowed;
  transform: none;
}

.danger-button {
  min-height: var(--atlas-control-height);
  padding: 0 14px;
  border: 1px solid var(--atlas-danger);
  border-radius: var(--atlas-radius-sm);
  color: #fff;
  background: var(--atlas-danger);
  font-size: var(--atlas-type-control);
  font-weight: 800;
  transition: background 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.danger-button:hover:not(:disabled) {
  background: #8e3933;
  box-shadow: 0 5px 13px rgba(164, 70, 62, .15);
  transform: translateY(-1px);
}

.brain-run-failure {
  display: grid;
  width: min(720px, calc(100% - 32px));
  grid-template-columns: 30px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  box-sizing: border-box;
  margin: 10px auto 14px;
  padding: 10px 11px;
  border: 1px solid #e7c4b9;
  border-radius: var(--atlas-radius-md);
  color: #6f3b32;
  background: var(--atlas-danger-soft);
}

.brain-run-failure > span {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--atlas-danger);
  font-size: var(--atlas-type-body);
  font-weight: 850;
}

.brain-run-failure > div {
  display: grid;
  min-width: 0;
  gap: 2px;
}

.brain-run-failure strong {
  color: var(--atlas-text);
  font-size: var(--atlas-type-control);
}

.brain-run-failure small {
  color: #74564f;
  font-size: var(--atlas-type-meta);
  line-height: 1.4;
}

.brain-run-failure button {
  min-height: 32px;
  padding: 0 11px;
  border: 1px solid #cf9487;
  border-radius: var(--atlas-radius-sm);
  color: #7a342d;
  background: #fff;
  font-size: var(--atlas-type-meta);
  font-weight: 800;
  cursor: pointer;
}

.brain-run-failure button:hover:not(:disabled) {
  border-color: var(--atlas-danger);
  background: #fff8f6;
}

.brain-run-failure button:disabled {
  opacity: .55;
  cursor: wait;
}

.workspace-login-button,
.atlas-login-button {
  border-radius: var(--atlas-radius-md);
  font-family: var(--atlas-font-sans);
  font-size: var(--atlas-type-body);
  font-weight: 800;
}

.atlas-login-button {
  border-color: var(--atlas-navy);
  background: linear-gradient(135deg, var(--atlas-navy), var(--atlas-accent-strong));
}

.ask-submit,
.chat-send,
.atlas-composer button[type=submit] {
  border-radius: var(--atlas-radius-sm);
  color: #fff;
  background: var(--atlas-accent);
  box-shadow: 0 2px 6px rgba(11, 83, 120, .14);
  transition: background 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

:where(.ask-submit, .chat-send, .atlas-composer button[type=submit]):hover:not(:disabled) {
  background: var(--atlas-accent-hover);
  box-shadow: 0 5px 13px rgba(11, 83, 120, .18);
  transform: translateY(-1px);
}

.account-action-button,
.copy-value-button,
.library-toolbar > button,
.notification-badge-permission button {
  border-radius: var(--atlas-radius-sm);
  font-size: var(--atlas-type-meta);
  font-weight: 800;
}

.icon-button,
.icon-label-button,
.atlas-thread-actions > button,
.chat-header-actions > button {
  min-width: var(--atlas-icon-control);
  min-height: var(--atlas-icon-control);
  border-color: var(--atlas-border);
  border-radius: var(--atlas-radius-sm);
  color: var(--atlas-text-soft);
  background: var(--atlas-surface);
}

.icon-button:hover,
.icon-label-button:hover,
.atlas-thread-actions > button:hover,
.chat-header-actions > button:hover {
  border-color: var(--atlas-border-strong);
  color: var(--atlas-accent-strong);
  background: var(--atlas-accent-soft);
}

/* Primary workspace tabs: one segmented-control language. */
.library-status-tabs,
.extensions-tabs,
.memory-status-tabs,
.business-tabs,
.business-management-nav {
  display: flex;
  width: fit-content;
  max-width: 100%;
  align-items: center;
  gap: var(--atlas-space-1);
  padding: var(--atlas-space-1);
  border: 1px solid var(--atlas-border);
  border-radius: var(--atlas-radius-md);
  background: var(--atlas-surface-muted);
  overflow-x: auto;
  scrollbar-width: none;
}

:where(.library-status-tabs, .extensions-tabs, .memory-status-tabs, .business-tabs, .business-management-nav)::-webkit-scrollbar {
  display: none;
}

:where(.library-status-tabs, .extensions-tabs, .memory-status-tabs, .business-tabs, .business-management-nav) button {
  min-height: 34px;
  flex: 0 0 auto;
  padding: 0 13px;
  border: 0;
  border-radius: var(--atlas-radius-sm);
  color: var(--atlas-text-soft);
  background: transparent;
  font-size: var(--atlas-type-control);
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
  transition: color 140ms ease, background 140ms ease, box-shadow 140ms ease;
}

:where(.library-status-tabs, .extensions-tabs, .memory-status-tabs, .business-tabs, .business-management-nav) button:hover:not(.is-active) {
  color: var(--atlas-accent-strong);
  background: rgba(255, 255, 255, .65);
}

:where(.library-status-tabs, .extensions-tabs, .memory-status-tabs, .business-tabs, .business-management-nav) button.is-active {
  color: #fff;
  background: var(--atlas-accent-strong);
  box-shadow: 0 2px 7px rgba(9, 47, 70, .16);
}

:where(.library-status-tabs, .extensions-tabs, .memory-status-tabs, .business-tabs, .business-management-nav) button span,
:where(.library-status-tabs, .extensions-tabs, .memory-status-tabs, .business-tabs, .business-management-nav) button small {
  color: inherit;
}

/* Content tabs: quieter than top-level workspace navigation. */
.edition-tabs,
.atlas-topic-page-tabs,
.business-project-detail-tabs {
  display: flex;
  max-width: 100%;
  align-items: center;
  gap: var(--atlas-space-5);
  border-bottom: 1px solid var(--atlas-border);
  overflow-x: auto;
  scrollbar-width: none;
}

:where(.edition-tabs, .atlas-topic-page-tabs, .business-project-detail-tabs)::-webkit-scrollbar {
  display: none;
}

:where(.edition-tabs, .atlas-topic-page-tabs, .business-project-detail-tabs) button,
.atlas-topic-page-tabs strong {
  min-height: 38px;
  flex: 0 0 auto;
  align-items: center;
  padding: 0 2px;
  border: 0;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  color: var(--atlas-text-soft);
  background: transparent;
  font-size: var(--atlas-type-control);
  font-weight: 800;
  line-height: 1;
  box-shadow: none;
}

:where(.edition-tabs, .business-project-detail-tabs) button.is-active,
.atlas-topic-page-tabs strong {
  border-bottom-color: var(--atlas-accent);
  color: var(--atlas-accent-strong);
  background: transparent;
  box-shadow: none;
}

:where(.edition-tabs, .atlas-topic-page-tabs, .business-project-detail-tabs) button:hover {
  color: var(--atlas-accent-strong);
  background: transparent;
}

/* In-page preference links follow the same control type scale. */
.personalization-tabs {
  gap: var(--atlas-space-2);
  padding: var(--atlas-space-3) var(--atlas-space-6);
  border-color: var(--atlas-border);
}

.personalization-tabs a {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  border-color: var(--atlas-border);
  border-radius: var(--atlas-radius-sm);
  color: var(--atlas-text-soft);
  font-size: var(--atlas-type-control);
  background: var(--atlas-surface);
}

.personalization-tabs a:hover {
  border-color: var(--atlas-accent);
  color: var(--atlas-accent-strong);
  background: var(--atlas-accent-soft);
}

.personalization-tabs b {
  background: var(--atlas-accent);
}

/* Forms */
.library-toolbar label,
.library-toolbar select,
.extensions-hero label,
.settings-field input,
.settings-field textarea,
.settings-field select,
.business-task-toolbar label,
.business-task-toolbar select,
.business-brain-actions label,
.business-task-detail-section input,
.business-task-detail-section textarea,
.business-task-detail-section select {
  border-color: var(--atlas-border);
  border-radius: var(--atlas-radius-md);
  color: var(--atlas-text);
  background: var(--atlas-surface);
}

:where(.library-toolbar, .extensions-hero, .settings-field, .business-task-toolbar, .business-brain-actions, .business-task-detail-section) :where(input, textarea, select)::placeholder {
  color: var(--atlas-text-muted);
}

:where(.library-toolbar, .extensions-hero, .settings-field, .business-task-toolbar, .business-brain-actions, .business-task-detail-section) :where(input, textarea, select):focus {
  border-color: var(--atlas-focus);
  box-shadow: 0 0 0 3px rgba(22, 141, 180, .1);
}

/* Shared surface treatment across product workspaces. */
.feature-card,
.module-card,
.manager-card,
.module-control-card,
.library-card,
.library-detail-layout > main,
.library-inspector > section,
.review-card,
.memory-workspace,
.memory-card,
.extension-card,
.accounts-card,
.session-card,
.codex-status-card,
.server-health-section,
.publication-ops-card,
.server-metric-card,
.business-stat-strip article,
.business-overview-grid > section,
.business-overview-grid > aside,
.business-activity,
.business-project-card,
.client-knowledge-card,
.business-management-work,
.business-task-detail > section,
.atlas-topic-order-card,
.settings-section,
.settings-person-card {
  border-color: var(--atlas-border);
  border-radius: var(--atlas-radius-lg);
  background-color: var(--atlas-surface);
  box-shadow: var(--atlas-shadow-sm);
}

.team-badge,
.account-type-badge,
.response-mode-badge,
.atlas-topic-badge,
.message-plugin-badge,
.review-status,
.permission-revision-status {
  border-radius: 999px;
  font-size: var(--atlas-type-meta);
  font-weight: 800;
  line-height: 1;
}

.settings-content-heading h2,
.accounts-card-header h2,
.accounts-card-header h3,
.memory-workspace > header h3,
.business-tasks-view > header h2,
.business-management-view > header h2 {
  color: var(--atlas-text);
  font-family: var(--atlas-font-sans);
  font-size: var(--atlas-type-heading-sm);
  font-weight: 800;
  letter-spacing: -.015em;
  line-height: 1.25;
}

.extension-card:hover,
.library-card:hover,
.business-project-card:hover,
.atlas-topic-order-card:hover {
  border-color: var(--atlas-border-strong);
  box-shadow: var(--atlas-shadow-md);
}

/* Empty and loading states should feel like one product. */
.empty-state,
.library-empty,
.extensions-empty,
.memory-empty,
.business-overview-empty,
.business-project-empty,
.uploads-empty,
.chat-empty-state {
  color: var(--atlas-text-soft);
  font-size: var(--atlas-type-body);
  line-height: 1.55;
}

:where(.empty-state, .library-empty, .extensions-empty, .memory-empty, .business-overview-empty, .business-project-empty, .uploads-empty, .chat-empty-state) h2,
:where(.empty-state, .library-empty, .extensions-empty, .memory-empty, .business-overview-empty, .business-project-empty, .uploads-empty, .chat-empty-state) strong {
  color: var(--atlas-text);
}

:where(.extensions-empty, .memory-empty, .business-overview-empty, .business-project-empty, .uploads-empty) strong {
  font-size: var(--atlas-type-body);
}

:where(.extensions-empty, .memory-empty, .business-overview-empty, .business-project-empty, .uploads-empty) :where(span, small, p) {
  color: var(--atlas-text-muted);
  font-size: var(--atlas-type-meta);
}

/* Feedback banners and status language */
.review-error,
.business-error,
.account-form-error {
  color: var(--atlas-danger);
  border-color: #efc2bc;
  background: var(--atlas-danger-soft);
}

.review-status.is-applied,
.business-status.is-done,
.is-success {
  color: var(--atlas-success);
  background: var(--atlas-success-soft);
}

/*
 * Editorial workspaces
 *
 * These selectors intentionally include the owning page. The legacy stylesheet
 * predates the product theme and uses more specific selectors for these three
 * surfaces; page ownership makes the theme authoritative without !important.
 */

/* Daily Edition */
.edition-page.edition-page {
  width: min(1180px, calc(100% - 48px));
  max-width: 1180px;
  padding-bottom: 72px;
}

.edition-page .edition-page-header {
  margin-bottom: 28px;
  padding: 18px 0 28px;
}

.edition-page .edition-page-header h1 {
  font-size: clamp(2.75rem, 5vw, 3.5rem);
}

.edition-page .edition-layout {
  grid-template-columns: minmax(0, 1fr) 230px;
  gap: 24px;
}

.edition-page .edition-layout > main {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--atlas-border);
  border-radius: var(--atlas-radius-lg);
  background: var(--atlas-surface);
  box-shadow: var(--atlas-shadow-sm);
}

.edition-page .edition-publication-meta {
  min-height: 28px;
  margin-bottom: 14px;
}

.edition-page .edition-tabs {
  gap: 5px;
  margin: 0 -24px 26px;
  padding: 4px 24px 14px;
  border-bottom: 1px solid var(--atlas-border);
}

.edition-page .edition-tabs button {
  min-height: 34px;
  gap: 7px;
  padding: 0 11px;
  border: 1px solid transparent;
  border-radius: var(--atlas-radius-sm);
  color: var(--atlas-text-soft);
  background: transparent;
  font-size: var(--atlas-type-control);
  font-weight: 800;
  box-shadow: none;
  transform: none;
}

.edition-page .edition-tabs button:hover:not(.is-active) {
  border-color: var(--atlas-border);
  color: var(--atlas-accent-strong);
  background: var(--atlas-accent-soft);
  transform: none;
}

.edition-page .edition-tabs button.is-active {
  border-color: var(--atlas-accent-strong);
  color: #fff;
  background: var(--atlas-accent-strong);
  box-shadow: 0 3px 9px rgba(9, 47, 70, .14);
}

.edition-page .edition-tabs button small {
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  color: var(--atlas-text-soft);
  background: var(--atlas-surface-muted);
  font-size: var(--atlas-type-kicker);
}

.edition-page .edition-tabs button.is-active small {
  color: #fff;
  background: rgba(255, 255, 255, .2);
}

.edition-page .edition-tab-panel > header {
  margin-bottom: 16px;
  padding-bottom: 0;
}

.edition-page .edition-tab-panel > header h2 {
  margin-top: 5px;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  line-height: 1.08;
}

.edition-page .edition-stories {
  display: grid;
  gap: 12px;
}

.edition-page .edition-stories .edition-story,
.edition-page .edition-stories .edition-story:first-child {
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 16px;
  margin: 0;
  padding: 20px;
  border: 1px solid var(--atlas-border);
  border-radius: var(--atlas-radius-md);
  background: var(--atlas-surface-subtle);
}

.edition-page .edition-stories .story-number {
  color: #9aabb4;
  font-size: 1.5625rem;
  line-height: 1;
}

.edition-page .edition-stories .edition-story h2 {
  max-width: 720px;
  margin: 7px 0 9px;
  font-size: clamp(1.3125rem, 2.2vw, 1.6875rem);
  line-height: 1.18;
}

.edition-page .edition-stories .edition-story p {
  margin-top: 0;
  color: var(--atlas-text-soft);
  font-size: var(--atlas-type-body);
  line-height: 1.65;
}

.edition-page .edition-story-actions button {
  min-height: 34px;
  padding: 0 11px;
  border-radius: var(--atlas-radius-sm);
  font-size: var(--atlas-type-control);
}

.edition-page .edition-history {
  position: sticky;
  top: 22px;
  padding: 17px;
  border: 1px solid var(--atlas-border);
  border-radius: var(--atlas-radius-lg);
  background: var(--atlas-surface);
  box-shadow: var(--atlas-shadow-sm);
}

.edition-page .edition-history > .eyebrow {
  margin-bottom: 10px;
}

.edition-page .edition-history > div {
  gap: 4px;
  margin-top: 0;
}

.edition-page .edition-history button {
  min-height: 46px;
  gap: 3px;
  padding: 9px 10px;
  border: 1px solid transparent;
  border-radius: var(--atlas-radius-sm);
  color: var(--atlas-text-soft);
}

.edition-page .edition-history button:hover {
  color: var(--atlas-text);
  background: var(--atlas-surface-muted);
}

.edition-page .edition-history button.is-active {
  border-color: #b9d9e3;
  color: var(--atlas-accent-strong);
  background: var(--atlas-accent-soft);
}

/* Living Library */
.library-page.library-page {
  width: min(1180px, calc(100% - 48px));
}

.library-page .library-masthead {
  margin-bottom: 24px;
  padding: 18px 0 28px;
}

.library-page .library-masthead h1 {
  font-size: clamp(2.75rem, 5vw, 3.5rem);
}

.library-page .library-add {
  min-height: var(--atlas-control-height);
  padding: 0 14px 0 8px;
  border-color: var(--atlas-accent-strong);
  border-radius: var(--atlas-radius-sm);
  background: var(--atlas-accent-strong);
  box-shadow: 0 3px 9px rgba(9, 47, 70, .14);
  font-size: var(--atlas-type-control);
}

.library-page .library-add > i {
  width: 25px;
  height: 25px;
  border-radius: 6px;
}

.library-page .library-status-tabs {
  width: fit-content;
  gap: 4px;
  margin: 0 0 18px;
  padding: 4px;
  border: 1px solid var(--atlas-border);
  border-radius: var(--atlas-radius-md);
  background: var(--atlas-surface-muted);
}

.library-page .library-status-tabs button {
  min-height: 34px;
  gap: 7px;
  padding: 0 12px;
  border: 0;
  border-radius: var(--atlas-radius-sm);
  color: var(--atlas-text-soft);
  background: transparent;
  font-size: var(--atlas-type-control);
  font-weight: 800;
}

.library-page .library-status-tabs button:hover:not(.is-active) {
  color: var(--atlas-accent-strong);
  background: rgba(255, 255, 255, .7);
}

.library-page .library-status-tabs button.is-active {
  border: 0;
  color: #fff;
  background: var(--atlas-accent-strong);
  box-shadow: 0 2px 7px rgba(9, 47, 70, .14);
}

.library-page .library-status-tabs button span {
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  color: var(--atlas-text-soft);
  background: rgba(255, 255, 255, .72);
  font-size: var(--atlas-type-kicker);
}

.library-page .library-status-tabs button.is-active span {
  color: var(--atlas-accent-strong);
  background: #fff;
}

.library-page .library-toolbar {
  gap: 8px;
  margin-bottom: 20px;
}

.library-page .library-toolbar label,
.library-page .library-toolbar select,
.library-page .library-toolbar > button {
  min-height: var(--atlas-control-height);
  border-radius: var(--atlas-radius-sm);
}

.library-page .library-toolbar > button {
  border-color: var(--atlas-accent-strong);
  color: #fff;
  background: var(--atlas-accent-strong);
}

.library-page .library-collection {
  display: grid;
  gap: 10px;
  border-top: 0;
}

.library-page .library-card {
  grid-template-columns: 46px minmax(0, 1fr) 30px;
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--atlas-border);
  border-radius: var(--atlas-radius-md);
  background: var(--atlas-surface);
  box-shadow: var(--atlas-shadow-sm);
}

.library-page .library-card:hover {
  padding: 18px;
  border-color: var(--atlas-border-strong);
  background: var(--atlas-surface);
  box-shadow: var(--atlas-shadow-md);
}

.library-page .library-card h2 {
  margin: 5px 0 6px;
  font-size: var(--atlas-type-heading-sm);
  line-height: 1.22;
}

.library-page .library-card p {
  font-size: var(--atlas-type-control);
}

/* Memory */
.memory-page.memory-page {
  width: min(1180px, calc(100% - 72px));
}

.memory-page .memory-page-header {
  margin-bottom: 28px;
  padding: 18px 0 28px;
}

.memory-page .memory-page-header h1 {
  font-size: clamp(2.75rem, 5vw, 3.5rem);
}

.memory-page .memory-workspace {
  overflow: hidden;
  border: 1px solid var(--atlas-border);
  border-radius: var(--atlas-radius-lg);
  background: var(--atlas-surface);
  box-shadow: var(--atlas-shadow-sm);
}

.memory-page .memory-workspace > header {
  padding: 20px 22px;
  border: 0;
  border-bottom: 1px solid var(--atlas-border);
  border-radius: 0;
  background: var(--atlas-surface-subtle);
}

.memory-page .memory-workspace > header h3 {
  margin: 4px 0 5px;
}

.memory-page .memory-workspace > header .memory-add-button.primary-button {
  min-height: var(--atlas-control-height);
  border-color: var(--atlas-accent-strong);
  color: #fff;
  background: var(--atlas-accent-strong);
  box-shadow: 0 3px 9px rgba(9, 47, 70, .14);
}

.memory-page .memory-workspace > header .memory-add-button.primary-button span,
.memory-page .memory-workspace > header .memory-add-button.primary-button svg {
  color: #fff;
  stroke: currentColor;
}

.memory-page .memory-status-tabs {
  width: fit-content;
  gap: 4px;
  margin: 14px 14px 10px;
  padding: 4px;
  border: 1px solid var(--atlas-border);
  border-radius: var(--atlas-radius-md);
  background: var(--atlas-surface-muted);
}

.memory-page .memory-workspace .memory-status-tabs {
  margin: 14px 14px 10px;
  padding: 4px;
}

.memory-page .memory-status-tabs button {
  min-height: 34px;
  padding: 0 12px;
  border: 0;
  border-radius: var(--atlas-radius-sm);
  color: var(--atlas-text-soft);
  background: transparent;
  font-size: var(--atlas-type-control);
  font-weight: 800;
}

.memory-page .memory-status-tabs button:hover:not(.is-active) {
  color: var(--atlas-accent-strong);
  background: rgba(255, 255, 255, .7);
}

.memory-page .memory-status-tabs button.is-active {
  border: 0;
  color: #fff;
  background: var(--atlas-accent-strong);
  box-shadow: 0 2px 7px rgba(9, 47, 70, .14);
}

.memory-page .memory-list {
  gap: 8px;
  padding: 0 14px 14px;
}

.memory-page .memory-card {
  padding: 13px 14px;
  border-color: var(--atlas-border);
  border-radius: var(--atlas-radius-md);
  background: var(--atlas-surface-subtle);
  box-shadow: none;
}

.memory-page .memory-card p {
  font-size: var(--atlas-type-body);
  line-height: 1.55;
}

.memory-page .memory-archive {
  min-height: 32px;
  border-color: var(--atlas-border);
  border-radius: var(--atlas-radius-sm);
  color: var(--atlas-text-soft);
  background: var(--atlas-surface);
}

/* One workspace-tab component across Atlas. */
.business-space-page .business-tabs,
.edition-page .edition-tabs,
.library-page .library-status-tabs,
.memory-page .memory-status-tabs,
.extensions-workspace .extensions-tabs,
.business-space-page .business-management-nav {
  display: flex;
  width: max-content;
  max-width: 100%;
  align-items: center;
  gap: 4px;
  padding: 4px;
  overflow-x: auto;
  border: 1px solid var(--atlas-border);
  border-radius: 13px;
  background: #e9eef0;
  box-shadow: inset 0 1px 2px rgba(8, 39, 61, .04);
  scrollbar-width: none;
}

:is(
  .business-space-page .business-tabs,
  .edition-page .edition-tabs,
  .library-page .library-status-tabs,
  .memory-page .memory-status-tabs,
  .extensions-workspace .extensions-tabs,
  .business-space-page .business-management-nav
)::-webkit-scrollbar {
  display: none;
}

:is(
  .business-space-page .business-tabs,
  .edition-page .edition-tabs,
  .library-page .library-status-tabs,
  .memory-page .memory-status-tabs,
  .extensions-workspace .extensions-tabs,
  .business-space-page .business-management-nav
) button {
  min-height: 40px;
  flex: 0 0 auto;
  padding: 0 18px;
  border: 0;
  border-radius: 9px;
  color: #5d7180;
  background: transparent;
  font-size: var(--atlas-type-body);
  font-weight: 750;
  line-height: 1;
  white-space: nowrap;
  box-shadow: none;
  transform: none;
}

:is(
  .business-space-page .business-tabs,
  .edition-page .edition-tabs,
  .library-page .library-status-tabs,
  .memory-page .memory-status-tabs,
  .extensions-workspace .extensions-tabs,
  .business-space-page .business-management-nav
) button:hover:not(.is-active) {
  border: 0;
  color: var(--atlas-text);
  background: rgba(255, 255, 255, .58);
  transform: none;
}

:is(
  .business-space-page .business-tabs,
  .edition-page .edition-tabs,
  .library-page .library-status-tabs,
  .memory-page .memory-status-tabs,
  .extensions-workspace .extensions-tabs,
  .business-space-page .business-management-nav
) button.is-active {
  border: 0;
  color: #fff;
  background: #164f78;
  box-shadow: 0 3px 9px rgba(12, 57, 87, .18);
}

.edition-page .edition-publication-meta {
  display: none;
}

.edition-page .edition-tabs {
  width: 100%;
  margin: 0 0 26px;
}

.edition-page .edition-tabs button small,
.library-page .library-status-tabs button span {
  min-width: 19px;
  height: 19px;
  color: var(--atlas-text-soft);
  background: rgba(255, 255, 255, .78);
}

.edition-page .edition-tabs button.is-active small,
.library-page .library-status-tabs button.is-active span {
  color: #164f78;
  background: #fff;
}

.edition-page .edition-tab-navigation {
  position: relative;
  display: flex;
  width: 100%;
  align-items: center;
  gap: 4px;
  margin: 0 0 26px;
  padding: 4px;
  border: 1px solid var(--atlas-border);
  border-radius: 13px;
  background: #e9eef0;
  box-shadow: inset 0 1px 2px rgba(8, 39, 61, .04);
}

.edition-page .edition-tab-viewport {
  position: relative;
  min-width: 0;
  flex: 1 1 auto;
  overflow: hidden;
  border-radius: 9px;
}

.edition-page .edition-tab-navigation .edition-tabs {
  width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  scroll-padding-inline: 8px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.edition-page .edition-tab-navigation .edition-tabs button {
  scroll-snap-align: start;
}

.edition-tab-scroll-button {
  display: grid;
  width: 34px;
  min-width: 34px;
  height: 40px;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 9px;
  color: #31596d;
  background: rgba(255, 255, 255, .72);
  cursor: pointer;
  transition: color .16s ease, background .16s ease, box-shadow .16s ease;
}

.edition-tab-scroll-button:hover {
  color: #fff;
  background: #257da6;
  box-shadow: 0 3px 8px rgba(12, 57, 87, .16);
}

.edition-tab-scroll-button svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.edition-tab-scroll-button[hidden],
.edition-tab-menu[hidden] {
  display: none;
}

.edition-tab-fade {
  position: absolute;
  z-index: 2;
  top: 0;
  bottom: 0;
  width: 28px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .16s ease;
}

.edition-tab-fade.is-left {
  left: 0;
  background: linear-gradient(90deg, #e9eef0 10%, rgba(233, 238, 240, 0));
}

.edition-tab-fade.is-right {
  right: 0;
  background: linear-gradient(270deg, #e9eef0 10%, rgba(233, 238, 240, 0));
}

.edition-tab-navigation.can-scroll-left .edition-tab-fade.is-left,
.edition-tab-navigation.can-scroll-right .edition-tab-fade.is-right {
  opacity: 1;
}

.edition-tab-directory {
  position: relative;
  z-index: 4;
  flex: 0 0 auto;
}

.edition-tab-more {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  gap: 7px;
  padding: 0 12px;
  border: 0;
  border-radius: 9px;
  color: #31596d;
  background: rgba(255, 255, 255, .72);
  font: inherit;
  font-size: var(--atlas-type-body);
  font-weight: 760;
  cursor: pointer;
}

.edition-tab-more:hover,
.edition-tab-more[aria-expanded="true"] {
  color: #164f78;
  background: #fff;
}

.edition-tab-more small {
  display: grid;
  min-width: 19px;
  height: 19px;
  place-items: center;
  padding: 0 5px;
  border-radius: 999px;
  color: #fff;
  background: #257da6;
  font-size: var(--atlas-type-kicker);
}

.edition-tab-menu {
  position: absolute;
  z-index: 30;
  top: calc(100% + 9px);
  right: 0;
  width: min(320px, calc(100vw - 48px));
  padding: 10px;
  border: 1px solid var(--atlas-border);
  border-radius: 14px;
  background: var(--atlas-surface);
  box-shadow: 0 18px 44px rgba(7, 33, 51, .2);
}

.edition-tab-menu > label {
  display: flex;
  min-height: 40px;
  align-items: center;
  gap: 9px;
  padding: 0 11px;
  border: 1px solid var(--atlas-border);
  border-radius: 9px;
  background: var(--atlas-surface);
}

.edition-tab-menu > label:focus-within {
  border-color: var(--atlas-focus);
  box-shadow: 0 0 0 3px rgba(37, 125, 166, .14);
}

.edition-tab-menu > label svg {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  fill: none;
  stroke: var(--atlas-text-soft);
  stroke-width: 1.5;
  stroke-linecap: round;
}

.edition-tab-menu input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  color: var(--atlas-text);
  background: transparent;
  font: inherit;
  font-size: var(--atlas-type-body);
}

.edition-tab-menu-list {
  display: grid;
  max-height: min(360px, 55vh);
  gap: 3px;
  margin-top: 8px;
  overflow-y: auto;
}

.edition-tab-menu-list > button {
  display: flex;
  min-height: 38px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 11px;
  border: 0;
  border-radius: 8px;
  color: var(--atlas-text-soft);
  background: transparent;
  font: inherit;
  font-size: var(--atlas-type-body);
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}

.edition-tab-menu-list > button:hover,
.edition-tab-menu-list > button.is-active {
  color: var(--atlas-text);
  background: var(--atlas-accent-soft);
}

.edition-tab-menu-list > button small {
  display: grid;
  min-width: 19px;
  height: 19px;
  place-items: center;
  padding: 0 5px;
  border-radius: 999px;
  color: var(--atlas-text-soft);
  background: var(--atlas-surface-muted);
  font-size: var(--atlas-type-kicker);
}

.edition-tab-menu-list > p {
  margin: 0;
  padding: 16px 10px;
  color: var(--atlas-text-muted);
  font-size: var(--atlas-type-body);
  text-align: center;
}

/* Keep dense workspace sidebars compact and readable. */
.global-nav,
.atlas-sidebar,
.chat-sidebar {
  --menu-type-primary: var(--atlas-type-body);
  --menu-type-item: var(--atlas-type-control);
  --menu-type-meta: var(--atlas-type-meta);
  --menu-type-section: var(--atlas-type-kicker);
}

@media (max-width: 760px) {
  :root {
    --atlas-type-page: clamp(1.75rem, 8.5vw, 2rem);
  }

  /* Installed mobile shells need one deliberate page-scroll owner. Chat and
     My Atlas retain their own virtualized conversation scrollers. */
  body.is-compact-navigation:not(.is-personal-atlas):not(.is-team-chat):not(.is-onboarding):not(.is-welcome) {
    overflow: hidden;
  }

  body.is-compact-navigation:not(.is-personal-atlas):not(.is-team-chat):not(.is-onboarding):not(.is-welcome) .workspace {
    height: var(--atlas-viewport-height);
    min-height: 0;
    overflow: hidden;
  }

  body.is-compact-navigation:not(.is-personal-atlas):not(.is-team-chat):not(.is-onboarding):not(.is-welcome) #app-main {
    height: calc(var(--atlas-viewport-height) - var(--atlas-mobile-nav-height));
    min-height: 0;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior-y: contain;
    -webkit-overflow-scrolling: touch;
    touch-action: pan-y;
  }

  body.is-mobile-keyboard-open.is-compact-navigation:not(.is-personal-atlas):not(.is-team-chat):not(.is-onboarding):not(.is-welcome) #app-main {
    height: var(--atlas-viewport-height);
  }

  .brain-run-failure {
    width: calc(100% - 16px);
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 8px;
    margin-block: 8px 10px;
    padding: 9px;
  }

  .brain-run-failure > span {
    width: 28px;
    height: 28px;
  }

  .brain-run-failure button {
    grid-column: 2;
    justify-self: start;
  }

  .page-header h1,
  .settings-header h1,
  .library-masthead h1,
  .edition-page-header h1,
  .memory-page-header h1,
  .extensions-hero h1,
  .business-space-page > header h1,
  .atlas-topic-page-hero h1 {
    font-size: var(--atlas-type-page);
    line-height: 1.05;
  }

  .page-header > p:not(.eyebrow),
  .settings-header > div:first-child > p:last-child,
  .library-masthead > div > p:last-child,
  .edition-page-header > div > p:not(.eyebrow),
  .memory-page-header p:not(.eyebrow),
  .extensions-hero > div > span,
  .business-space-page > header > span {
    font-size: var(--atlas-type-control);
    line-height: 1.4;
  }

  .page-header .eyebrow,
  .settings-header .eyebrow,
  .library-masthead .eyebrow,
  .edition-page-header .eyebrow,
  .memory-page-header .eyebrow,
  .extensions-hero > div > p,
  .business-space-page > header > p,
  .atlas-topic-page-hero .eyebrow {
    font-size: var(--atlas-type-kicker);
  }

  .business-tabs {
    display: grid;
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow: visible;
  }

  .business-tabs button {
    width: 100%;
  }

  .business-space-page .business-tabs {
    display: grid;
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow: visible;
  }

  .business-space-page .business-tabs button {
    width: 100%;
    min-width: 0;
    padding-inline: 8px;
  }

  :where(.library-status-tabs, .extensions-tabs, .memory-status-tabs, .business-management-nav) {
    width: 100%;
  }

  :where(.library-status-tabs, .extensions-tabs, .memory-status-tabs, .business-management-nav) button {
    flex: 1 0 auto;
  }

  :is(
    .business-space-page .business-tabs,
    .edition-page .edition-tabs,
    .library-page .library-status-tabs,
    .memory-page .memory-status-tabs,
    .extensions-workspace .extensions-tabs,
    .business-space-page .business-management-nav
  ) {
    gap: 3px;
    padding: 3px;
    border-radius: 11px;
  }

  :is(
    .business-space-page .business-tabs,
    .edition-page .edition-tabs,
    .library-page .library-status-tabs,
    .memory-page .memory-status-tabs,
    .extensions-workspace .extensions-tabs,
    .business-space-page .business-management-nav
  ) button {
    min-height: 34px;
    padding: 0 9px;
    border-radius: 8px;
    font-size: var(--atlas-type-meta);
    line-height: 1;
  }

  .edition-page .edition-tabs button small,
  .library-page .library-status-tabs button span {
    min-width: 17px;
    height: 17px;
    padding-inline: 4px;
    font-size: var(--atlas-type-kicker);
  }

  .personalization-tabs {
    padding-inline: var(--atlas-space-4);
  }

  .primary-button,
  .secondary-button {
    min-height: 40px;
  }

  .edition-page.edition-page,
  .library-page.library-page,
  .memory-page.memory-page {
    width: calc(100% - 28px);
  }

  .edition-page.edition-page,
  .library-page.library-page {
    padding-top: 48px;
    padding-bottom: 84px;
  }

  .edition-page .edition-page-header {
    gap: 7px;
    margin-bottom: 12px;
    padding: 0 0 12px;
  }

  .edition-page .edition-page-header .eyebrow {
    margin-bottom: 5px;
  }

  .edition-page .edition-page-header h1 {
    margin-bottom: 4px;
  }

  .edition-page .edition-page-header .edition-next-run {
    margin-top: 5px;
    font-size: var(--atlas-type-kicker);
  }

  .edition-page .edition-page-header > .secondary-button {
    min-height: 32px;
    padding: 6px 10px;
    font-size: var(--atlas-type-meta);
  }

  .edition-page .edition-layout {
    display: block;
  }

  .edition-page .edition-layout > main {
    padding: 16px;
  }

  .edition-page .edition-tabs {
    width: 100%;
    margin: 0;
    padding: 0;
  }

  .edition-page .edition-tab-navigation {
    gap: 3px;
    margin-bottom: 16px;
    padding: 3px;
    border-radius: 11px;
  }

  .edition-page .edition-tab-scroll-button {
    display: none;
  }

  .edition-page .edition-tab-more {
    min-height: 34px;
    padding-inline: 9px;
    font-size: var(--atlas-type-meta);
  }

  .edition-page .edition-stories .edition-story,
  .edition-page .edition-stories .edition-story:first-child {
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 10px;
    padding: 15px;
  }

  .edition-page .edition-history {
    position: static;
    margin-top: 18px;
  }

  .edition-page .edition-history > div {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .library-page .library-masthead {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 14px;
    padding: 0 0 13px;
  }

  .library-page .library-masthead h1 {
    margin: 3px 0 7px;
  }

  .library-page .library-add {
    min-height: 34px;
    gap: 7px;
    padding: 5px 11px 5px 6px;
    border-radius: 9px;
    font-size: var(--atlas-type-meta);
  }

  .library-page .library-add > i {
    width: 24px;
    height: 24px;
    border-radius: 6px;
  }

  .library-page .library-status-tabs {
    margin-bottom: 14px;
  }

  .library-page .library-toolbar {
    grid-template-columns: 1fr 1fr;
  }

  .library-page .library-toolbar label {
    grid-column: 1 / -1;
  }

  .library-page .library-toolbar > button {
    grid-column: 1 / -1;
  }

  .library-page .library-card {
    grid-template-columns: 40px minmax(0, 1fr) 24px;
    gap: 11px;
    padding: 14px;
  }

  .library-page .library-card:hover {
    padding: 14px;
  }

  .library-page .library-card h2 {
    font-size: var(--atlas-type-body-lg);
  }

  .memory-page .memory-page-header {
    align-items: flex-start;
  }

  .memory-page .memory-workspace > header {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .memory-page .memory-workspace > header .memory-add-button.primary-button {
    width: 100%;
  }

  .memory-page .memory-card {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .memory-page .memory-kind {
    grid-column: 1 / -1;
    width: fit-content;
  }

  body.is-personal-atlas .atlas-messages,
  body.is-team-chat .chat-messages {
    padding-bottom: 50px;
    scroll-padding-bottom: 50px;
  }

  body.is-personal-atlas .atlas-thread .conversation-jump-latest,
  body.is-team-chat .chat-thread .conversation-jump-latest {
    bottom: calc(var(--conversation-bottom-chrome-height, 104px) + 10px);
  }
}

/* Appearance settings: one portable interface-size contract across every surface. */
.interface-size-cards label > span {
  min-height: 8.25rem;
  align-content: start;
  padding: var(--atlas-space-4);
}

.interface-size-preview {
  display: grid;
  width: 100%;
  min-height: 3.25rem;
  place-items: center;
  border: 1px solid var(--atlas-border);
  border-radius: var(--atlas-radius-sm);
  color: var(--atlas-accent-strong);
  background: var(--atlas-surface-muted);
  font-style: normal;
  font-weight: 750;
}

.interface-size-preview.is-standard { font-size: .875em; }
.interface-size-preview.is-comfortable { font-size: 1em; }
.interface-size-preview.is-large { font-size: 1.2em; }

.interface-size-cards strong {
  display: flex;
  align-items: center;
  gap: var(--atlas-space-2);
}

.interface-size-cards strong em {
  padding: 3px 6px;
  border-radius: 999px;
  color: var(--atlas-accent-strong);
  background: var(--atlas-accent-soft);
  font-size: var(--atlas-type-kicker);
  font-style: normal;
  letter-spacing: .08em;
}

.interface-size-sample {
  display: grid;
  gap: var(--atlas-space-1);
  margin-top: var(--atlas-space-4);
  padding: var(--atlas-space-4);
  border: 1px solid var(--atlas-border);
  border-radius: var(--atlas-radius-md);
  background: var(--atlas-surface-subtle);
}

.interface-size-sample small {
  color: var(--atlas-accent-strong);
  font-size: var(--atlas-type-kicker);
  font-weight: 850;
  letter-spacing: .12em;
}

.interface-size-sample strong { font-size: var(--atlas-type-heading-sm); }
.interface-size-sample span { color: var(--atlas-text-soft); font-size: var(--atlas-type-body); line-height: 1.55; }

html.atlas-comfortable-reading :where(.atlas-rich-text, .library-detail-body, .edition-story-copy, .source-viewer-body) {
  line-height: 1.7;
}

@media (max-width: 760px) {
  .interface-size-cards { grid-template-columns: 1fr; }
  .interface-size-cards label > span {
    min-height: 0;
    grid-template-columns: 4rem minmax(0, 1fr);
    align-items: center;
  }
  .interface-size-cards .interface-size-preview { grid-row: 1 / span 2; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}