/*
 * Unified UI polish
 *
 * This final layer turns the current shell into a small, shared design system.
 * Page-specific styles still own layout and content; this file owns theme
 * tokens, shell alignment, touch sizing, and the intentionally flatter mobile
 * hierarchy.
 */

:root {
  --bbs-shell-width: 216px;
  --bbs-content-gutter: clamp(24px, 3vw, 46px);
  --ui-page: #f4f6f8;
  --ui-surface: #ffffff;
  --ui-surface-raised: #ffffff;
  --ui-surface-soft: #edf2f3;
  --ui-input: #ffffff;
  --ui-text: #071317;
  --ui-muted: rgba(7, 19, 23, 0.62);
  --ui-faint: rgba(7, 19, 23, 0.42);
  --ui-line: rgba(7, 19, 23, 0.12);
  --ui-line-strong: rgba(7, 19, 23, 0.2);
  --ui-accent: #075d68;
  --ui-accent-hover: #064a54;
  --ui-accent-soft: rgba(39, 136, 152, 0.11);
  --ui-danger: #9b3429;
  --ui-focus: #087f90;
  --ui-shadow: 0 16px 42px rgba(6, 54, 65, 0.08);
}

body.theme-light {
  --bbs-shell-page: var(--ui-page);
  --bbs-shell-text: var(--ui-text);
  --bbs-shell-muted: var(--ui-muted);
  --minimal-bg: var(--ui-page);
  --minimal-text: var(--ui-text);
  --minimal-muted: var(--ui-muted);
  --minimal-line: var(--ui-line);
}

body.theme-dark {
  --ui-page: #0d181d;
  --ui-surface: #14242b;
  --ui-surface-raised: #182b33;
  --ui-surface-soft: #1c3139;
  --ui-input: #101f25;
  --ui-text: #edf6f7;
  --ui-muted: rgba(237, 246, 247, 0.68);
  --ui-faint: rgba(237, 246, 247, 0.46);
  --ui-line: rgba(223, 242, 244, 0.13);
  --ui-line-strong: rgba(223, 242, 244, 0.22);
  --ui-accent: #72d6df;
  --ui-accent-hover: #94e4eb;
  --ui-accent-soft: rgba(85, 190, 202, 0.14);
  --ui-danger: #ff9b8f;
  --ui-focus: #8de8ee;
  --ui-shadow: 0 20px 52px rgba(0, 0, 0, 0.24);
  --bbs-shell-page: var(--ui-page);
  --bbs-shell-text: var(--ui-text);
  --bbs-shell-muted: var(--ui-muted);
  --bbs-shell-line: var(--ui-line);
  --minimal-bg: var(--ui-page);
  --minimal-text: var(--ui-text);
  --minimal-muted: var(--ui-muted);
  --minimal-line: var(--ui-line);
}

html {
  background: var(--ui-page);
}

html:has(body.theme-light) {
  color-scheme: light;
  background: #f4f6f8;
}

html:has(body.theme-dark) {
  color-scheme: dark;
  background: #0d181d;
}

body:not(.auth-page-body),
body:not(.auth-page-body) .page-shell {
  background: var(--ui-page) !important;
  color: var(--ui-text) !important;
}

body:not(.auth-page-body) .page-shell {
  padding: 0 0 48px var(--bbs-shell-width) !important;
}

body:not(.auth-page-body) .topbar {
  width: var(--bbs-shell-width) !important;
  padding: 20px 13px !important;
  background: var(--bbs-shell-sidebar, #063641) !important;
  border-right: 1px solid rgba(245, 251, 253, 0.14) !important;
}

body.theme-light:not(.auth-page-body) .topbar,
body.theme-dark:not(.auth-page-body) .topbar {
  background: var(--bbs-shell-sidebar, #063641) !important;
}

body:not(.auth-page-body) .brand {
  min-height: 148px;
  gap: 11px;
  padding-bottom: 18px;
  border-bottom-width: 1px;
}

body:not(.auth-page-body) .brand::before {
  width: 84px;
  height: 84px;
  border: 1px solid rgba(245, 251, 253, 0.3);
  border-radius: 24px;
  background: #063641 url('/assets/freebbs-emblem-v2.png') center / cover no-repeat;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.2);
}

body:not(.auth-page-body) .brand-mark::after {
  color: var(--bbs-shell-sidebar-text, #f5fbfd) !important;
  font-size: 1.32rem;
  letter-spacing: 0.035em;
}

body:not(.auth-page-body) .nav-actions {
  gap: 5px;
  padding: 12px 3px 0;
}

body:not(.auth-page-body) .nav-link {
  min-height: 46px;
  gap: 11px;
  padding: 0 12px;
  border-radius: 9px !important;
  font-size: 0.92rem;
}

body:not(.auth-page-body) .topbar .nav-link,
body:not(.auth-page-body) .topbar .nav-link span {
  color: rgba(245, 251, 253, 0.9) !important;
}

body:not(.auth-page-body) .topbar .nav-link:hover,
body:not(.auth-page-body) .topbar .nav-link.is-active {
  background: var(--bbs-shell-sidebar-active, #278898) !important;
  color: #ffffff !important;
}

body:not(.auth-page-body) .topbar .nav-icon {
  filter: brightness(0) invert(1) !important;
}

body:not(.auth-page-body) .nav-icon {
  width: 21px;
  height: 21px;
}

body:not(.auth-page-body) .nav-actions > .theme-toggle {
  display: flex !important;
}

body:not(.auth-page-body) .main-content {
  padding: 124px var(--bbs-content-gutter) 60px !important;
}

body:not(.auth-page-body) .main-content::before {
  left: calc(var(--bbs-shell-width) + var(--bbs-content-gutter));
  right: var(--bbs-content-gutter);
  height: 92px;
  padding-right: min(38vw, 420px);
  border-bottom: 1px solid var(--ui-line);
  background: var(--ui-page);
  color: var(--ui-text);
  font-size: clamp(1.8rem, 3vw, 2.28rem);
}

body:not(.auth-page-body) .user-panel {
  top: 14px;
  right: var(--bbs-content-gutter);
  height: 62px;
  color: var(--ui-text) !important;
}

body:not(.auth-page-body) .avatar {
  width: 56px !important;
  height: 56px !important;
  border: 1px solid var(--ui-line) !important;
  background: var(--ui-surface-soft) !important;
}

body:not(.auth-page-body) .user-name {
  max-width: 128px;
  color: var(--ui-text) !important;
  font-size: 0.9rem;
}

body:not(.auth-page-body) .currency {
  min-width: 60px;
  border-color: var(--ui-line) !important;
  background: var(--ui-surface) !important;
  color: var(--ui-text) !important;
}

body:not(.auth-page-body) .site-footer {
  margin-inline: var(--bbs-content-gutter);
  border-color: var(--ui-line) !important;
}

body:not(.auth-page-body) .site-footer,
body:not(.auth-page-body) .site-footer a,
body:not(.auth-page-body) .site-footer p {
  color: var(--ui-muted) !important;
}

:where(a, button, input, select, textarea):focus-visible {
  outline-color: var(--ui-focus) !important;
  outline-offset: 3px;
}

body:not(.auth-page-body) .topbar :where(a, button):focus-visible,
body:not(.auth-page-body) .mobile-nav :where(a, button):focus-visible {
  outline-color: #bff8f7 !important;
}

/* Shared surfaces and fields */

body:not(.auth-page-body) .settings-profile,
body:not(.auth-page-body) .settings-card,
body:not(.auth-page-body) .workbench-card,
body:not(.auth-page-body) .discussion-board-about,
body:not(.auth-page-body) .discussion-compose,
body:not(.auth-page-body) .discussion-detail,
body:not(.auth-page-body) .discussion-stats-sidebar,
body:not(.auth-page-body) .discussion-post-card,
body:not(.auth-page-body) .aichat-dialogs,
body:not(.auth-page-body) .aichat-main,
body:not(.auth-page-body) .aichat-auth-required,
body:not(.auth-page-body) .economy-auth-required,
body:not(.auth-page-body) .economy-heat-panel,
body:not(.auth-page-body) .shop-item-card,
body:not(.auth-page-body) .inventory-item-row,
body:not(.auth-page-body) .home-dashboard-panel,
body:not(.auth-page-body) .public-profile-stat,
body:not(.auth-page-body) .admin-user-row,
body:not(.auth-page-body) .system-settings-menu,
body:not(.auth-page-body) .system-settings-form,
body:not(.auth-page-body) .course-hero,
body:not(.auth-page-body) .course-overview,
body:not(.auth-page-body) .course-toolbar,
body:not(.auth-page-body) .course-card,
body:not(.auth-page-body) .knowledge-sidebar,
body:not(.auth-page-body) .knowledge-content,
body:not(.auth-page-body) .knowledge-section,
body:not(.auth-page-body) .knowledge-rag-thread {
  border-color: var(--ui-line) !important;
  background: var(--ui-surface) !important;
  color: var(--ui-text) !important;
  box-shadow: var(--ui-shadow) !important;
}

body:not(.auth-page-body) :where(input, textarea, select) {
  border-color: var(--ui-line-strong) !important;
  background: var(--ui-input) !important;
  color: var(--ui-text) !important;
}

body:not(.auth-page-body) :where(input, textarea)::placeholder {
  color: var(--ui-faint) !important;
}

body:not(.auth-page-body) .main-content :where(p, li, dd, small),
body:not(.auth-page-body) .discussion-post-card-meta,
body:not(.auth-page-body) .discussion-detail-meta,
body:not(.auth-page-body) .discussion-comment-meta {
  color: var(--ui-muted) !important;
}

body:not(.auth-page-body) .main-content :where(h1, h2, h3, h4, strong, label) {
  color: var(--ui-text) !important;
}

body:not(.auth-page-body) .main-content :where(.discussion-kicker, .course-kicker, .aichat-kicker),
body.system-settings-page .system-settings-kicker {
  color: var(--ui-accent) !important;
  font-size: max(0.76rem, 12px);
}

body.theme-dark:not(.auth-page-body) .main-content :where(a) {
  color: var(--ui-accent) !important;
}

body:not(.auth-page-body)
  .main-content
  :is(
    .auth-submit,
    .discussion-submit,
    .discussion-create-toggle,
    .discussion-board-save,
    .aichat-send,
    .aichat-new-dialog,
    .aichat-auth-link,
    .system-settings-submit,
    .knowledge-rag-form button,
    .course-discussion-link
  ),
body:not(.auth-page-body)
  .main-content
  :is(
    .auth-submit,
    .discussion-submit,
    .discussion-create-toggle,
    .discussion-board-save,
    .aichat-send,
    .aichat-new-dialog,
    .aichat-auth-link,
    .system-settings-submit,
    .knowledge-rag-form button,
    .course-discussion-link
  )
  * {
  color: #ffffff !important;
}

/* Home */

body.home-page .home-dashboard {
  width: min(100%, 1440px);
  margin-inline: auto;
}

body.home-page .home-dashboard-panel {
  box-shadow: var(--ui-shadow) !important;
}

body.home-page .home-dashboard {
  --home-dashboard-line: var(--ui-line);
  --home-dashboard-line-strong: var(--ui-line-strong);
  --home-dashboard-muted: var(--ui-muted);
  --home-dashboard-accent: var(--ui-accent);
}

body.home-page .home-panel-kicker,
body.home-page .home-feed-badge,
body.home-page .home-heat-user-copy small {
  font-size: 0.76rem;
}

body.theme-dark.home-page .home-feed-toggle,
body.theme-dark.home-page .home-dashboard-empty button,
body.theme-dark.home-page .home-dashboard-empty a {
  border-color: var(--ui-line-strong);
  background: var(--ui-surface-soft);
}

body.theme-dark.home-page .home-feed-toggle:hover {
  background: #223a43;
}

body.theme-dark.home-page .home-board-progress,
body.theme-dark.home-page .home-board-progress::-webkit-progress-bar {
  background: #23373e;
}

body.theme-dark.home-page .home-heat-score {
  color: #ff9b78 !important;
}

body.theme-dark.home-page .home-loading-kicker,
body.theme-dark.home-page .home-loading-title,
body.theme-dark.home-page .home-loading-meta,
body.theme-dark.home-page .home-loading-rank,
body.theme-dark.home-page .home-loading-avatar {
  background: linear-gradient(90deg, #21343b 20%, #2b444d 48%, #21343b 76%);
  background-size: 220% 100%;
}

/* Learning world keeps its immersive image stage while sharing the shell. */

body.theme-dark.world-page:not(.auth-page-body) {
  background:
    linear-gradient(140deg, rgba(8, 12, 16, 0.68), rgba(10, 16, 23, 0.62)),
    url('/assets/world_bg.webp') center center / cover no-repeat,
    #0b1017 !important;
}

body.theme-light.world-page:not(.auth-page-body) {
  background:
    linear-gradient(140deg, rgba(247, 243, 235, 0.74), rgba(235, 229, 216, 0.7)),
    url('/assets/world_bg.webp') center center / cover no-repeat,
    #f4efe7 !important;
}

body.world-page:not(.auth-page-body) .page-shell-world {
  background: transparent !important;
}

body.world-page:not(.auth-page-body) .world-main {
  padding: 0 !important;
}

body.world-page:not(.auth-page-body) .world-main::before {
  display: none !important;
}

body.not-found-page:not(.auth-page-body) {
  background:
    linear-gradient(rgba(8, 14, 24, 0.24), rgba(8, 14, 24, 0.46)),
    url('/assets/404bg.webp') center center / cover no-repeat !important;
  color: #f4efe7 !important;
}

/* Discussion and Markdown */

body.discussion-page .settings-shell,
body.aichat-page .aichat-shell {
  width: min(100%, 1320px);
  max-width: 1320px !important;
}

body.discussion-page .main-content .discussion-detail-head h2 {
  max-width: 24ch;
  color: var(--ui-text) !important;
}

body.discussion-page .main-content .discussion-post-title,
body.discussion-page .main-content .discussion-post-card-main h3,
body.discussion-page .main-content .discussion-comments-head h3,
body.discussion-page .main-content .discussion-comment-content {
  color: var(--ui-text) !important;
}

body.discussion-page .main-content .discussion-post-source,
body.discussion-page .main-content .discussion-post-actions,
body.discussion-page .main-content .discussion-detail-meta,
body.discussion-page .main-content .discussion-comment-meta {
  color: var(--ui-muted) !important;
}

body.discussion-page .main-content .discussion-post-source .discussion-post-board,
body.discussion-page .main-content .discussion-detail-board,
body.discussion-page .main-content .discussion-author-link,
body.discussion-page .main-content .discussion-comment-author-link {
  color: var(--ui-accent) !important;
}

body.discussion-page .main-content .discussion-comment {
  border-color: var(--ui-line) !important;
  background: var(--ui-surface-soft) !important;
}

body.discussion-page .discussion-comment-replies {
  border-left-color: color-mix(in srgb, var(--ui-accent) 34%, transparent);
}

body.discussion-page .main-content .discussion-reaction-button,
body.discussion-page .main-content .discussion-comment-count,
body.discussion-page .main-content .discussion-detail-back,
body.discussion-page .main-content .discussion-detail-pin,
body.discussion-page .main-content .discussion-detail-feature,
body.discussion-page .main-content .discussion-detail-delete,
body.discussion-page .main-content .discussion-board-edit,
body.discussion-page .main-content .discussion-board-moderators,
body.discussion-page .main-content .discussion-editor-button,
body.discussion-page .main-content .discussion-comment-reply-button {
  min-width: 44px;
  min-height: 44px;
  border-color: var(--ui-line) !important;
  background: var(--ui-surface-soft) !important;
  color: var(--ui-text) !important;
}

body.theme-dark.discussion-page .main-content .discussion-reaction-button img,
body.theme-dark.discussion-page .main-content .discussion-comment-count img,
body.theme-dark.discussion-page .main-content .discussion-action-icon {
  filter: brightness(0) invert(1) opacity(0.74) !important;
}

body.discussion-page .main-content .discussion-markdown-body,
body.discussion-page .main-content .discussion-markdown-body p,
body.discussion-page .main-content .discussion-markdown-body li,
body.discussion-page .main-content .discussion-markdown-body strong {
  color: var(--ui-text) !important;
}

body.discussion-page .main-content .discussion-markdown-body a {
  color: var(--ui-accent) !important;
}

body.discussion-page .main-content .discussion-markdown-body blockquote {
  border-left-color: color-mix(in srgb, var(--ui-accent) 55%, transparent);
  background: var(--ui-accent-soft);
  color: var(--ui-muted) !important;
}

body.theme-dark.discussion-page .main-content .discussion-markdown-body :not(pre) > code {
  border-color: var(--ui-line);
  background: #20343c !important;
  color: #bdebf0 !important;
}

.discussion-comment-content.discussion-markdown-body {
  overflow-wrap: anywhere;
}

.discussion-comment-editor {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  overflow: hidden;
  border: 1px solid var(--ui-line-strong);
  border-radius: 12px;
  background: var(--ui-input);
}

body.discussion-page .main-content .discussion-comment-editor textarea {
  min-height: 184px;
  padding: 16px !important;
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
}

.discussion-comment-preview {
  min-width: 0;
  min-height: 184px;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  border-left: 1px solid var(--ui-line);
  background: color-mix(in srgb, var(--ui-surface-soft) 62%, transparent);
}

.discussion-comment-preview-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--ui-line);
  color: var(--ui-muted) !important;
  font-family: var(--font-ui);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.discussion-comment-preview-head strong,
.discussion-comment-preview-head span {
  color: var(--ui-muted) !important;
  font: inherit;
}

.discussion-comment-preview-head span {
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.discussion-comment-preview-body {
  min-width: 0;
  padding: 14px 16px;
  overflow: auto;
  color: var(--ui-text);
  font-size: 0.94rem;
  line-height: 1.72;
}

.discussion-comment-preview-body.is-empty {
  color: var(--ui-faint) !important;
}

.discussion-comment-preview-empty {
  margin: 0 !important;
  color: var(--ui-faint) !important;
}

/* Ask Max */

body.aichat-page .main-content .aichat-dialogs,
body.aichat-page .main-content .aichat-main,
body.aichat-page .main-content .aichat-auth-required {
  border-color: var(--ui-line) !important;
  background: var(--ui-surface) !important;
}

body.aichat-page .aichat-dialogs-head,
body.aichat-page .aichat-main-header,
body.aichat-page .main-content .aichat-composer {
  border-color: var(--ui-line) !important;
  background: var(--ui-surface) !important;
}

body.aichat-page .main-content .aichat-thread {
  background: color-mix(in srgb, var(--ui-surface-soft) 54%, transparent);
}

body.aichat-page .main-content .aichat-bubble,
body.aichat-page .main-content .aichat-bubble p,
body.aichat-page .main-content .aichat-bubble li,
body.aichat-page .main-content .aichat-bubble strong,
body.aichat-page .main-content .aichat-bubble code {
  color: var(--ui-text) !important;
}

body.aichat-page .main-content .aichat-bubble {
  border-color: var(--ui-line) !important;
  background: var(--ui-surface-raised) !important;
}

body.theme-dark.aichat-page .main-content .aichat-message-assistant .aichat-bubble {
  background: var(--ui-surface-raised) !important;
}

body.aichat-page .main-content .aichat-message-user .aichat-bubble {
  border-color: color-mix(in srgb, var(--ui-accent) 30%, transparent) !important;
  background: var(--ui-accent-soft) !important;
}

body.aichat-page .main-content .aichat-navigation-action strong {
  color: var(--ui-accent-strong, #075f72) !important;
}

body.aichat-page .main-content .aichat-navigation-action span {
  color: var(--ui-text-muted, #486970) !important;
}

body.theme-dark.aichat-page .main-content .aichat-navigation-action span {
  color: #b8d2d7 !important;
}

body.aichat-page .main-content .aichat-composer textarea,
body.aichat-page .main-content .aichat-meta-row {
  background: var(--ui-input) !important;
  color: var(--ui-text) !important;
}

body.theme-dark.aichat-page .main-content .aichat-kicker,
body.theme-dark.aichat-page .main-content .aichat-presence,
body.theme-dark.aichat-page .main-content .aichat-composer::before {
  color: var(--ui-accent) !important;
}

body.theme-dark.aichat-page .main-content .aichat-composer textarea::placeholder,
body.theme-dark.aichat-page .main-content .aichat-shortcut,
body.theme-dark.aichat-page .main-content .aichat-status,
body.theme-dark.aichat-page .main-content .aichat-dialog-id {
  color: var(--ui-muted) !important;
}

body.theme-dark.aichat-page .main-content .aichat-shortcut kbd {
  border-color: var(--ui-line-strong);
  background: var(--ui-surface-soft);
  color: var(--ui-text);
}

body.aichat-page .main-content .aichat-copy-button {
  width: 44px;
  height: 44px;
  border-color: var(--ui-line) !important;
  background: var(--ui-surface-raised) !important;
}

body.theme-dark.aichat-page .main-content .aichat-copy-button img {
  filter: brightness(0) invert(1) opacity(0.72) !important;
}

body.theme-dark.aichat-page .main-content .aichat-dialog-toggle,
body.theme-dark.aichat-page .main-content .aichat-dialogs,
body.theme-dark.aichat-page .main-content .aichat-dialog-close {
  border-color: var(--ui-line) !important;
  background: var(--ui-surface) !important;
  color: var(--ui-text) !important;
}

body.theme-dark.aichat-page .main-content .aichat-dialog-toggle span,
body.theme-dark.aichat-page .main-content .aichat-dialog-close span {
  color: var(--ui-text) !important;
}

body.theme-dark.aichat-page .main-content .aichat-dialog-toggle img {
  filter: brightness(0) invert(1) opacity(0.76) !important;
}

body.aichat-page .main-content .aichat-copy-menu {
  border-color: var(--ui-line) !important;
  background: var(--ui-surface-raised) !important;
}

/* Settings, profile, admin, and system settings */

body:not(.auth-page-body) .settings-shell,
body:not(.auth-page-body) .system-settings-shell {
  margin-inline: auto;
}

body:not(.auth-page-body) .settings-shell {
  align-content: start;
  align-items: start;
  grid-auto-rows: max-content;
}

body:not(.auth-page-body) .public-profile-shell {
  width: min(100%, 900px);
  margin-inline: auto;
  justify-self: center;
  align-content: start;
  grid-auto-rows: max-content;
}

body:not(.auth-page-body) .settings-profile,
body:not(.auth-page-body) .settings-card {
  border-radius: 14px !important;
}

body:not(.auth-page-body) .public-profile-stat {
  box-shadow: none !important;
}

body:not(.auth-page-body) .public-profile-field,
body.theme-dark:not(.auth-page-body) .public-profile-field {
  padding: 12px 0 0 !important;
  border: 0 !important;
  border-top: 1px solid var(--ui-line) !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
}

body:not(.auth-page-body) .settings-password-form {
  border-color: var(--ui-line);
}

body.theme-dark:not(.auth-page-body) .settings-form input,
body.theme-dark:not(.auth-page-body) .settings-form textarea,
body.theme-dark:not(.auth-page-body) .settings-password-form input {
  border-color: var(--ui-line-strong) !important;
  background: var(--ui-input) !important;
  color: var(--ui-text) !important;
}

body.theme-dark:not(.auth-page-body) .settings-form input::placeholder,
body.theme-dark:not(.auth-page-body) .settings-form textarea::placeholder,
body.theme-dark:not(.auth-page-body) .settings-password-form input::placeholder {
  color: var(--ui-faint) !important;
}

body.system-settings-page .system-settings-menu-item,
body.system-settings-page .system-settings-form-heading {
  border-color: var(--ui-line);
}

body.system-settings-page .system-settings-menu-item {
  color: var(--ui-text) !important;
}

body.system-settings-page .system-settings-menu-item:hover {
  background: var(--ui-accent-soft);
}

body.system-settings-page .system-settings-menu-icon,
body.system-settings-page .system-settings-secret-toggle {
  border-color: var(--ui-line-strong);
  background: var(--ui-surface-soft);
  color: var(--ui-text) !important;
}

body.theme-dark.system-settings-page .system-settings-menu-icon img {
  filter: brightness(0) invert(1);
}

body.system-settings-page .system-settings-back {
  min-height: 44px;
  color: var(--ui-accent) !important;
}

body.theme-dark.system-settings-page .system-settings-field input,
body.theme-dark.system-settings-page .system-settings-secret-field input {
  border-color: var(--ui-line-strong) !important;
  background: var(--ui-input) !important;
  color: var(--ui-text) !important;
}

body.adminusers-page .admin-add-button,
body.adminusers-page .admin-button {
  min-height: 44px;
}

body.adminusers-page .admin-section,
body.adminusers-page .admin-users-table {
  align-content: start;
}

body.adminusers-page .admin-toggle {
  min-width: 44px;
  min-height: 44px;
}

body.adminusers-page .admin-user-row :is(input, select) {
  min-height: 44px;
}

body.adminusers-page .admin-user-row select {
  height: 44px;
}

body.theme-dark.adminusers-page .admin-users-head,
body.theme-dark.adminusers-page .admin-user-row {
  border-color: var(--ui-line) !important;
  background: var(--ui-surface) !important;
}

body.theme-dark.adminusers-page .admin-user-row input,
body.theme-dark.adminusers-page .admin-user-row select {
  border-color: var(--ui-line-strong) !important;
  background: var(--ui-input) !important;
  color: var(--ui-text) !important;
}

body.theme-dark.adminusers-page .admin-user-row input[readonly] {
  background: var(--ui-surface-soft) !important;
  color: var(--ui-muted) !important;
}

/* Economy pages */

.economy-page .shop-grid,
.economy-page .inventory-list {
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
}

.economy-page .shop-item-actions .electromagnetic-button,
.economy-page .inventory-item-actions .electromagnetic-button,
.economy-page .economy-inventory-link,
.economy-page .economy-activation-button {
  min-height: 44px;
  font-size: 0.8rem;
}

body.theme-dark.economy-page .shop-item-image,
body.theme-dark.economy-page .inventory-item-image,
body.theme-dark.economy-page .shop-inspect-image {
  border-color: var(--ui-line);
  background: var(--ui-surface-soft);
}

body.theme-dark.economy-page .shop-item-image img,
body.theme-dark.economy-page .inventory-item-image img,
body.theme-dark.economy-page .economy-inventory-link img,
body.theme-dark.economy-page .shop-inspect-image img {
  filter: none !important;
}

/* Authentication */

.auth-page-body,
.auth-page-body .auth-page-shell {
  background: var(--ui-page) !important;
  color: var(--ui-text) !important;
}

.auth-page-body {
  padding: 0 !important;
}

.auth-page-body .auth-page-shell {
  min-height: 100dvh;
  padding: max(28px, env(safe-area-inset-top, 0px)) max(20px, env(safe-area-inset-right, 0px))
    max(28px, env(safe-area-inset-bottom, 0px)) max(20px, env(safe-area-inset-left, 0px));
}

.auth-page-body .auth-page-panel {
  width: min(100%, 460px);
  max-width: 460px !important;
  padding: clamp(26px, 4vw, 38px) !important;
  border: 1px solid var(--ui-line) !important;
  border-radius: 16px !important;
  background: var(--ui-surface) !important;
  color: var(--ui-text) !important;
  box-shadow: var(--ui-shadow) !important;
}

.auth-page-body:has(.auth-grid-row-four) .auth-page-panel {
  width: min(100%, 880px);
  max-width: 880px !important;
}

.auth-page-body .auth-grid-row-four {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.auth-page-body .auth-page-title,
.auth-page-body .auth-label,
.auth-page-body .auth-page-switch,
.auth-page-body .auth-page-switch a {
  color: var(--ui-text) !important;
}

.auth-page-body .auth-field input {
  border-color: var(--ui-line-strong) !important;
  background: var(--ui-input) !important;
  color: var(--ui-text) !important;
}

.auth-page-body .auth-submit {
  min-height: 48px;
  border-color: #075d68 !important;
  background: #075d68 !important;
  color: #ffffff !important;
}

.auth-page-body .auth-submit:hover {
  border-color: #064a54 !important;
  background: #064a54 !important;
}

.auth-page-body .auth-submit:disabled,
.auth-page-body .auth-inline-button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.auth-page-body .auth-label-icon {
  filter: none !important;
  opacity: 0.72;
}

body.theme-dark.auth-page-body .auth-label-icon {
  filter: brightness(0) invert(1) !important;
}

.auth-page-body .site-footer,
.auth-page-body .site-footer a,
.auth-page-body .site-footer p {
  color: var(--ui-muted) !important;
}

/*
 * The legacy theme sheet contains high-specificity authentication rules.
 * Keep this final layer equally specific so both themes use the shared
 * surfaces instead of the old translucent white panel.
 */
html body.auth-page-body .auth-page-panel,
html body.auth-page-body.theme-light .auth-page-panel,
html body.auth-page-body.theme-dark .auth-page-panel {
  border-color: var(--ui-line) !important;
  background: var(--ui-surface) !important;
  color: var(--ui-text) !important;
  box-shadow: var(--ui-shadow) !important;
}

html body.auth-page-body .auth-field {
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
}

html body.auth-page-body .auth-field input,
html body.auth-page-body.theme-light .auth-form input,
html body.auth-page-body.theme-dark .auth-form input {
  border-color: var(--ui-line-strong) !important;
  background: var(--ui-input) !important;
  color: var(--ui-text) !important;
  box-shadow: none !important;
}

html body.auth-page-body .auth-field input::placeholder,
html body.auth-page-body.theme-light .auth-form input::placeholder,
html body.auth-page-body.theme-dark .auth-form input::placeholder {
  color: var(--ui-faint) !important;
}

html body.auth-page-body .auth-major-fixed,
html body.auth-page-body .auth-inline-button {
  min-height: 48px;
  border-color: var(--ui-line-strong) !important;
  background: var(--ui-surface-soft) !important;
  color: var(--ui-text) !important;
  box-shadow: none !important;
}

html body.auth-page-body .auth-submit,
html body.auth-page-body.theme-light .auth-submit,
html body.auth-page-body.theme-dark .auth-submit {
  border-color: #075d68 !important;
  background: #075d68 !important;
  color: #ffffff !important;
}

html body.auth-page-body .auth-submit:hover,
html body.auth-page-body.theme-light .auth-submit:hover,
html body.auth-page-body.theme-dark .auth-submit:hover {
  border-color: #064a54 !important;
  background: #064a54 !important;
}

/* Responsive hierarchy */

@media (max-width: 1180px) and (min-width: 901px) {
  :root {
    --bbs-shell-width: 196px;
    --bbs-content-gutter: 28px;
  }

  body:not(.auth-page-body) .brand::before {
    width: 72px;
    height: 72px;
  }

  body:not(.auth-page-body) .brand {
    min-height: 132px;
  }

  body:not(.auth-page-body) .nav-link {
    font-size: 0.86rem;
  }

  body:not(.auth-page-body) .currency {
    min-width: 48px;
    padding-inline: 7px;
  }

  body:not(.auth-page-body) .user-panel {
    gap: 10px;
  }
}

@media (max-width: 900px) {
  :root {
    --bbs-shell-width: 0px;
    --bbs-content-gutter: 14px;
    --mobile-nav-space: calc(92px + env(safe-area-inset-bottom, 0px));
  }

  body:not(.auth-page-body) .page-shell {
    padding: 0 0 var(--mobile-nav-space) !important;
  }

  body:not(.auth-page-body) .topbar,
  body:not(.auth-page-body) .topbar .nav-actions {
    display: contents !important;
  }

  body:not(.auth-page-body) .topbar > .brand,
  body:not(.auth-page-body) .topbar > .searchbar,
  body:not(.auth-page-body) .topbar .nav-actions > .nav-link,
  body:not(.auth-page-body) .topbar .nav-actions > .theme-toggle {
    display: none !important;
  }

  body:not(.auth-page-body) .user-panel {
    top: calc(10px + env(safe-area-inset-top, 0px));
    right: calc(14px + env(safe-area-inset-right, 0px));
    z-index: 150;
    width: 44px;
    height: 44px;
    display: flex !important;
    gap: 0;
  }

  body:not(.auth-page-body) .user-summary {
    width: 44px !important;
    display: block !important;
  }

  body:not(.auth-page-body) .avatar {
    width: 44px !important;
    height: 44px !important;
  }

  body:not(.auth-page-body) .user-copy,
  body:not(.auth-page-body) .user-status {
    display: none !important;
  }

  body:not(.auth-page-body) .user-actions {
    display: contents !important;
  }

  body:not(.auth-page-body) .user-actions > :not(.mobile-theme-toggle) {
    display: none !important;
  }

  body:not(.auth-page-body) .user-actions .mobile-theme-toggle {
    position: fixed;
    top: calc(10px + env(safe-area-inset-top, 0px));
    right: calc(66px + env(safe-area-inset-right, 0px));
    z-index: 151;
    width: 44px;
    height: 44px;
    display: grid !important;
    place-items: center;
    padding: 0;
    border: 1px solid var(--ui-line) !important;
    border-radius: 12px !important;
    background: var(--ui-surface) !important;
    color: var(--ui-text) !important;
  }

  body:not(.auth-page-body) .user-actions .mobile-theme-toggle .nav-icon {
    width: 21px;
    height: 21px;
    filter: none !important;
  }

  body.theme-dark:not(.auth-page-body) .user-actions .mobile-theme-toggle .nav-icon {
    filter: brightness(0) invert(1) !important;
  }

  body:not(.auth-page-body) .user-actions .mobile-theme-toggle span {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }

  body:not(.auth-page-body) .main-content {
    padding: calc(82px + env(safe-area-inset-top, 0px))
      calc(var(--bbs-content-gutter) + env(safe-area-inset-right, 0px)) 30px
      calc(var(--bbs-content-gutter) + env(safe-area-inset-left, 0px)) !important;
  }

  body:not(.auth-page-body) .main-content::before {
    top: env(safe-area-inset-top, 0px);
    left: calc(14px + env(safe-area-inset-left, 0px));
    right: calc(118px + env(safe-area-inset-right, 0px));
    height: 64px;
    padding-right: 0;
    border-bottom-width: 1px;
    font-size: clamp(1.45rem, 7vw, 1.85rem);
  }

  body:not(.auth-page-body) .site-footer {
    margin-inline: var(--bbs-content-gutter);
  }

  body:not(.auth-page-body) .mobile-nav {
    left: calc(10px + env(safe-area-inset-left, 0px));
    right: calc(10px + env(safe-area-inset-right, 0px));
    bottom: calc(8px + env(safe-area-inset-bottom, 0px));
    width: auto;
    max-width: 680px;
    min-height: 68px;
    display: flex !important;
    gap: 3px;
    padding: 6px;
    overflow-x: auto;
    margin-inline: auto;
    transform: none;
    border: 1px solid rgba(255, 255, 255, 0.14) !important;
    border-radius: 18px !important;
    background: rgba(6, 54, 65, 0.97) !important;
    box-shadow: 0 16px 34px rgba(0, 25, 31, 0.28) !important;
    scrollbar-width: none;
    scroll-snap-type: x proximity;
  }

  body:not(.auth-page-body) .mobile-nav::-webkit-scrollbar {
    display: none;
  }

  body:not(.auth-page-body) .mobile-nav .nav-link {
    width: auto !important;
    min-width: 72px;
    min-height: 54px;
    flex: 0 0 72px !important;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    padding: 5px 4px;
    border-radius: 12px !important;
    color: rgba(255, 255, 255, 0.8) !important;
    font-size: 0.75rem;
    line-height: 1.05;
    text-align: center;
    scroll-snap-align: center;
  }

  body:not(.auth-page-body) .mobile-nav .nav-link:hover,
  body:not(.auth-page-body) .mobile-nav .nav-link.is-active {
    background: rgba(255, 255, 255, 0.15) !important;
    color: #ffffff !important;
  }

  body:not(.auth-page-body) .mobile-nav .nav-icon {
    width: 21px;
    height: 21px;
    opacity: 0.9 !important;
  }

  body:not(.auth-page-body) .settings-shell,
  body:not(.auth-page-body) .discussion-shell,
  body:not(.auth-page-body) .course-shell,
  body:not(.auth-page-body) .knowledge-shell,
  body:not(.auth-page-body) .world-shell,
  body:not(.auth-page-body) .economy-shell,
  body:not(.auth-page-body) .workbench-shell {
    width: 100%;
    padding-inline: 0 !important;
  }

  body:not(.auth-page-body) .settings-profile,
  body:not(.auth-page-body) .settings-card,
  body:not(.auth-page-body) .discussion-board-about,
  body:not(.auth-page-body) .discussion-compose,
  body:not(.auth-page-body) .discussion-detail,
  body:not(.auth-page-body) .discussion-stats-sidebar,
  body:not(.auth-page-body) .aichat-dialogs,
  body:not(.auth-page-body) .aichat-main,
  body:not(.auth-page-body) .course-hero,
  body:not(.auth-page-body) .course-overview,
  body:not(.auth-page-body) .course-toolbar,
  body:not(.auth-page-body) .knowledge-sidebar,
  body:not(.auth-page-body) .knowledge-content,
  body:not(.auth-page-body) .knowledge-section {
    border-radius: 12px !important;
    box-shadow: none !important;
  }

  body.knowledge-page .knowledge-main .knowledge-sidebar {
    gap: 10px;
    padding: 0 0 14px !important;
    border: 0 !important;
    border-bottom: 1px solid var(--ui-line) !important;
    border-radius: 0 !important;
    background: transparent !important;
  }

  body.knowledge-page .knowledge-list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 2px;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
  }

  body.knowledge-page .knowledge-list::-webkit-scrollbar {
    display: none;
  }

  body.knowledge-page .knowledge-list-item {
    min-width: 172px;
    min-height: 68px;
    flex: 0 0 172px;
    align-content: center;
    padding: 10px 12px;
    scroll-snap-align: start;
  }

  body.discussion-page .main-content {
    padding-inline: calc(var(--bbs-content-gutter) + env(safe-area-inset-left, 0px))
      calc(var(--bbs-content-gutter) + env(safe-area-inset-right, 0px)) !important;
  }

  body.discussion-page .main-content .discussion-stats-sidebar {
    padding: 14px !important;
    border: 0 !important;
    background: transparent !important;
  }

  body.discussion-page .main-content .discussion-feed,
  body.discussion-page .main-content .discussion-detail {
    border: 0 !important;
    background: transparent !important;
  }

  body.discussion-page .main-content .discussion-detail {
    padding: 4px 0 0 !important;
  }

  body.discussion-page .main-content .discussion-post-card {
    grid-template-columns: minmax(0, 1fr);
    padding: 16px 2px !important;
    border: 0 !important;
    border-bottom: 1px solid var(--ui-line) !important;
    border-radius: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
  }

  body.discussion-page .discussion-post-author,
  body.discussion-page .discussion-post-open {
    display: none;
  }

  body.discussion-page .discussion-detail-toolbar,
  body.discussion-page .discussion-moderator-actions {
    align-items: stretch;
    flex-wrap: wrap;
  }

  body.discussion-page .discussion-comment {
    --comment-indent-size: 10px;
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 10px;
    margin-left: min(calc(var(--comment-depth, 0) * 8px), 12px);
    padding: 13px 0;
    border: 0 !important;
    border-bottom: 1px solid var(--ui-line) !important;
    border-radius: 0 !important;
    background: transparent !important;
  }

  body.discussion-page .discussion-comment-replies {
    margin-top: 8px;
    padding-left: 10px;
    border-left-width: 1px;
  }

  body.discussion-page .discussion-reply-form {
    padding: 10px 0 0;
    border: 0;
    background: transparent;
  }

  body.discussion-page .discussion-comment-editor {
    grid-template-columns: minmax(0, 1fr);
  }

  body.discussion-page .discussion-comment-preview {
    min-height: 112px;
    max-height: min(40dvh, 320px);
    border-top: 1px solid var(--ui-line);
    border-left: 0;
  }

  body.discussion-page .discussion-comment-preview-body {
    min-height: 88px;
  }

  body.aichat-page .main-content .aichat-copy-button,
  body.aichat-page .main-content .aichat-dialog-close {
    width: 44px;
    height: 44px;
  }

  body:not(.auth-page-body) .discussion-markdown-body pre {
    padding-top: 60px !important;
  }

  body:not(.auth-page-body) .discussion-markdown-body pre > .code-copy-menu {
    top: 8px;
    right: 8px;
  }

  body:not(.auth-page-body) .discussion-markdown-body pre > .code-run-menu {
    top: 8px;
    right: 60px;
  }

  body.workbench-page .workbench-intro h1 {
    display: none;
  }

  body.workbench-page .workbench-card {
    min-height: 0;
  }

  body.adminusers-page .admin-add-button,
  body.adminusers-page .admin-button,
  body.system-settings-page .system-settings-back {
    min-height: 44px;
  }
}

@media (max-width: 560px) {
  .auth-page-body .auth-page-shell {
    padding-inline: max(14px, env(safe-area-inset-left, 0px))
      max(14px, env(safe-area-inset-right, 0px));
  }

  .auth-page-body .auth-page-panel {
    padding: 22px 18px !important;
  }

  .auth-page-body .auth-grid-row,
  .auth-page-body .auth-grid-row-four,
  .auth-page-body .auth-grid-row-two,
  .auth-page-body .auth-inline {
    grid-template-columns: minmax(0, 1fr);
  }

  .auth-page-body .auth-inline-button {
    width: 100%;
    min-height: 44px;
  }

  body:not(.auth-page-body) .settings-profile,
  body:not(.auth-page-body) .settings-card,
  body.system-settings-page .system-settings-form {
    padding: 16px !important;
  }

  body:not(.auth-page-body) .public-profile-header {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 16px;
  }

  body:not(.auth-page-body) .public-profile-avatar-wrap {
    width: 96px;
    height: 96px;
    padding: 6px;
  }

  body:not(.auth-page-body) .public-profile-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  body:not(.auth-page-body) .public-profile-stat {
    padding: 14px;
  }

  body.home-page .home-dashboard-panel {
    padding: 15px;
  }

  body.home-page .home-panel-actions {
    align-items: flex-end;
  }

  body.home-page .home-heat-score,
  body.home-page .home-heat-user-copy small,
  body.home-page .home-feed-badge {
    font-size: 0.76rem;
  }

  .economy-page .shop-grid,
  .economy-page .inventory-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) and (max-height: 700px) {
  body.home-page {
    overflow-y: auto;
  }

  body.home-page .home-dashboard-main {
    min-height: auto;
    overflow: visible;
  }

  body.home-page .home-dashboard {
    height: auto;
    min-height: 0;
    grid-template-rows: none;
  }

  body.home-page .home-dashboard-panel {
    min-height: 280px;
  }
}

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