/* Atlas UI v2 — distinct from Perplexity; daily-use work desk */

@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;650&family=IBM+Plex+Serif:wght@500;600&display=swap");

body.atlas-ui {
  --at-radius: 14px;
  --at-radius-sm: 10px;
  --at-font: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --at-serif: "IBM Plex Serif", Georgia, serif;
}

body.atlas-ui.at-theme-light {
  --at-rail-bg: #f3f2ef;
  --at-rail-text: #1c2830;
  --at-rail-muted: #647480;
  --at-rail-border: rgba(16, 24, 32, 0.09);
  --at-rail-accent: #0d7a72;
  --at-rail-accent-dim: rgba(13, 122, 114, 0.11);
  --at-rail-hover: rgba(16, 24, 32, 0.05);
  --at-rail-active-text: #0a635d;
  --at-rail-logo-text: #101820;
  --at-rail-btn-text: #0a635d;
  --at-rail-btn-border: rgba(13, 122, 114, 0.35);
  --at-rail-mark-fg: #ffffff;
  --at-canvas: #faf9f7;
  --at-surface: #ffffff;
  --at-surface-elevated: #ffffff;
  --at-ink: #101820;
  --at-muted: #5c6b76;
  --at-accent: #0d7a72;
  --at-accent-hover: #0a635d;
  --at-warm: #b8722a;
  --at-border: rgba(16, 24, 32, 0.09);
  --at-shadow: 0 8px 32px rgba(16, 24, 32, 0.06);
  --at-header-bg: rgba(250, 249, 247, 0.92);
  --at-hover-subtle: rgba(16, 24, 32, 0.04);
  --at-badge-bg: rgba(13, 122, 114, 0.08);
  --at-answer-shadow: 0 4px 20px rgba(16, 24, 32, 0.04);
}

body.atlas-ui.at-theme-dark {
  --at-rail-bg: #101820;
  --at-rail-text: #c8d4dc;
  --at-rail-muted: #7a8f9c;
  --at-rail-border: rgba(255, 255, 255, 0.08);
  --at-rail-accent: #3dd6c6;
  --at-rail-accent-dim: rgba(61, 214, 198, 0.15);
  --at-rail-hover: rgba(255, 255, 255, 0.08);
  --at-rail-active-text: #e8fffc;
  --at-rail-logo-text: #ffffff;
  --at-rail-btn-text: #e8fffc;
  --at-rail-btn-border: rgba(61, 214, 198, 0.35);
  --at-rail-mark-fg: #0a1218;
  --at-canvas: #151c24;
  --at-surface: #1a232c;
  --at-surface-elevated: #212b36;
  --at-ink: #e8edf1;
  --at-muted: #93a4b0;
  --at-accent: #3dd6c6;
  --at-accent-hover: #2ec4b4;
  --at-warm: #d4934a;
  --at-border: rgba(255, 255, 255, 0.09);
  --at-shadow: 0 12px 40px rgba(0, 0, 0, 0.28);
  --at-header-bg: rgba(21, 28, 36, 0.92);
  --at-hover-subtle: rgba(255, 255, 255, 0.05);
  --at-badge-bg: rgba(61, 214, 198, 0.12);
  --at-answer-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

body.atlas-ui.at-theme-light,
body.atlas-ui.at-theme-dark {
  --px-bg: var(--at-canvas);
  --px-surface: var(--at-surface-elevated);
  --px-text: var(--at-ink);
  --px-muted: var(--at-muted);
  --px-accent: var(--at-accent);
  --px-accent-hover: var(--at-accent-hover);
  --px-border: var(--at-border);
  --px-font: var(--at-font);
}

body.atlas-ui.px-in-space .px-sidebar {
  display: none;
}

/* —— Rail (sidebar) —— */
body.atlas-ui .px-sidebar {
  width: 272px;
  background: var(--at-rail-bg);
  border-right: 1px solid var(--at-rail-border);
  color: var(--at-rail-text);
  padding: 1rem 0.85rem 1.25rem;
  gap: 0.65rem;
}

body.atlas-ui .px-sidebar-title {
  color: var(--at-rail-muted);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
}

body.atlas-ui .px-sidebar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0 0.15rem 0.5rem;
  margin-bottom: 0.15rem;
  border-bottom: none;
}

body.atlas-ui .px-sidebar-head .px-sidebar-title {
  display: none;
}

body.atlas-ui .px-sidebar > .px-sidebar-title {
  display: block;
  margin: 0.35rem 0.25rem 0.15rem;
}

body.atlas-ui .px-sidebar-close {
  color: var(--at-rail-muted);
  border-color: var(--at-rail-border);
}

body.atlas-ui .px-sidebar-close:hover {
  color: var(--at-rail-logo-text);
  background: var(--at-rail-hover);
}

body.atlas-ui .px-logo-rail {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: var(--at-rail-logo-text);
  font-weight: 650;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}


body.atlas-ui .px-logo-rail span.atlas-mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--at-rail-accent), var(--at-accent-hover));
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--at-rail-mark-fg);
}

body.atlas-ui .px-new-thread {
  background: var(--at-rail-accent-dim);
  border: 1px solid var(--at-rail-btn-border);
  color: var(--at-rail-btn-text);
  border-radius: var(--at-radius-sm);
  font-weight: 600;
  text-align: center;
}

body.atlas-ui .px-new-thread:hover {
  background: var(--at-rail-accent-dim);
  border-color: var(--at-rail-accent);
  color: var(--at-rail-active-text);
}

body.atlas-ui .px-spaces-title,
body.atlas-ui .px-spaces-add {
  color: var(--at-rail-muted);
}

body.atlas-ui .px-spaces-add {
  border-color: var(--at-rail-border);
  background: transparent;
  color: var(--at-rail-accent);
}

body.atlas-ui .px-spaces-add:hover {
  background: var(--at-rail-accent-dim);
}

body.atlas-ui .px-space-row:hover {
  background: var(--at-rail-hover);
}

body.atlas-ui .px-space-row.active {
  background: var(--at-rail-accent-dim);
}

body.atlas-ui .px-space-item {
  color: var(--at-rail-text);
}

body.atlas-ui .px-space-row.active .px-space-item {
  color: var(--at-rail-active-text);
}

body.atlas-ui .px-space-meta {
  color: var(--at-rail-muted);
  background: var(--at-hover-subtle);
}

body.atlas-ui .px-session-item {
  color: var(--at-rail-text);
  border-radius: var(--at-radius-sm);
}

body.atlas-ui .px-session-row:hover {
  background: var(--at-rail-hover);
}

body.atlas-ui .px-session-row.active {
  background: var(--at-rail-accent-dim);
}

body.atlas-ui .px-session-row.active .px-session-item {
  color: var(--at-rail-active-text);
  font-weight: 600;
}

body.atlas-ui .px-session-space {
  background: var(--at-hover-subtle);
  color: var(--at-rail-accent);
}

body.atlas-ui .px-usage {
  color: var(--at-rail-muted);
  border-top-color: var(--at-rail-border);
}

body.atlas-ui .px-sidebar-privacy {
  color: var(--at-rail-muted);
}

body.atlas-ui .px-sidebar-privacy:hover {
  color: var(--at-rail-accent);
}

body.atlas-ui .px-sidebar-memory {
  border: 1px solid var(--at-rail-border);
  background: transparent;
  color: var(--at-rail-text);
  border-radius: var(--at-radius-sm);
  padding: 0.45rem 0.65rem;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
}

body.atlas-ui .px-sidebar-memory:hover {
  background: var(--at-rail-hover);
  border-color: var(--at-rail-accent);
  color: var(--at-rail-active-text);
}

body.atlas-ui .at-rail-memory-preview {
  margin: 0 0 0.55rem;
  font-size: 0.82rem;
  color: var(--at-muted);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

body.atlas-ui .at-rail-memory-btn {
  border: 1px solid var(--at-border);
  background: var(--at-surface);
  color: var(--at-accent);
  border-radius: var(--at-radius-sm);
  padding: 0.35rem 0.65rem;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
}

body.atlas-ui .at-rail-memory-btn:hover {
  border-color: var(--at-accent);
}

body.atlas-ui .px-settings-memory-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.55rem;
}

body.atlas-ui .px-settings-memory-toggle {
  margin: 0.35rem 0 0.65rem;
}

/* —— Shell & header —— */
body.atlas-ui .px-shell {
  background: var(--at-canvas);
  min-height: 0;
}

body.atlas-ui .px-header {
  background: var(--at-header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--at-border);
  padding: 0.65rem 1.25rem;
}

body.atlas-ui .px-logo {
  font-family: var(--at-serif);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
}

body.atlas-ui .px-logo span {
  color: var(--at-accent);
}

body.atlas-ui .px-main {
  max-width: none;
  margin: 0;
  padding: 0;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

/* —— Home: work desk —— */
body.atlas-ui .at-desk {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 1.5rem 1.75rem 0;
  max-width: 1080px;
  width: 100%;
  margin: 0 auto;
}

body.atlas-ui .at-desk-head {
  margin-bottom: 1.35rem;
}

body.atlas-ui .at-desk-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin: 0 0 0.5rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: var(--at-badge-bg);
  color: var(--at-accent);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

body.atlas-ui .at-desk-head h1 {
  font-family: var(--at-serif);
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  margin: 0 0 0.35rem;
  line-height: 1.15;
}

body.atlas-ui .at-desk-lead {
  margin: 0;
  font-size: 1.02rem;
  color: var(--at-muted);
  max-width: 36rem;
  line-height: 1.5;
}

body.atlas-ui .at-desk-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding-bottom: 1rem;
}

@media (max-width: 768px) {
  body.atlas-ui .at-desk-grid {
    grid-template-columns: 1fr;
  }
}

body.atlas-ui .at-panel {
  background: var(--at-surface);
  border: 1px solid var(--at-border);
  border-radius: var(--at-radius);
  padding: 1rem 1.1rem;
  box-shadow: var(--at-shadow);
  min-height: 160px;
}

body.atlas-ui .at-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

body.atlas-ui .at-panel-head h2 {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--at-muted);
}

body.atlas-ui .at-panel-action {
  border: none;
  background: transparent;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--at-accent);
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  border-radius: 6px;
}

body.atlas-ui .at-panel-action:hover {
  background: rgba(13, 122, 114, 0.08);
}

body.atlas-ui .at-project-cards {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

body.atlas-ui .at-project-card {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  width: 100%;
  text-align: left;
  border: 1px solid var(--at-border);
  border-radius: var(--at-radius-sm);
  padding: 0.65rem 0.75rem;
  background: var(--at-surface-elevated);
  cursor: pointer;
  font: inherit;
  transition: border-color 0.15s, transform 0.12s;
}

body.atlas-ui .at-project-card:hover {
  border-color: var(--at-accent);
  transform: translateY(-1px);
}

body.atlas-ui .at-project-card-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(13, 122, 114, 0.12), rgba(193, 127, 58, 0.12));
  display: grid;
  place-items: center;
  font-size: 1rem;
  flex-shrink: 0;
}

body.atlas-ui .at-project-card-body {
  flex: 1;
  min-width: 0;
}

body.atlas-ui .at-project-card-name {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

body.atlas-ui .at-project-card-meta {
  display: block;
  font-size: 0.75rem;
  color: var(--at-muted);
}

body.atlas-ui .at-recent-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

body.atlas-ui .at-recent-item {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  width: 100%;
  border: none;
  background: transparent;
  border-radius: var(--at-radius-sm);
  padding: 0.5rem 0.55rem;
  cursor: pointer;
  font: inherit;
  text-align: left;
  color: var(--at-ink);
}

body.atlas-ui .at-recent-item:hover {
  background: var(--at-hover-subtle);
}

body.atlas-ui .at-recent-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--at-warm);
  flex-shrink: 0;
}

body.atlas-ui .at-recent-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.88rem;
  font-weight: 500;
}

body.atlas-ui .at-empty-hint {
  margin: 0;
  font-size: 0.85rem;
  color: var(--at-muted);
  line-height: 1.45;
}

body.atlas-ui .at-desk-composer-wrap {
  position: sticky;
  bottom: 0;
  padding: 1rem 0 calc(1rem + var(--px-safe-bottom));
  background: linear-gradient(transparent, var(--at-canvas) 28%);
  margin-top: auto;
}

body.atlas-ui .at-desk-composer-wrap .px-search-wrap {
  max-width: none;
}

body.atlas-ui .px-home .px-search-box {
  border-radius: var(--at-radius);
  border: 1px solid var(--at-border);
  box-shadow: var(--at-shadow);
  background: var(--at-surface-elevated);
}

body.atlas-ui .px-home .px-search-row textarea {
  font-size: 1.05rem;
  min-height: 52px;
}

body.atlas-ui .at-hints {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.75rem;
}

body.atlas-ui .at-hints .px-hint-chip {
  border-radius: var(--at-radius-sm);
  border: 1px solid var(--at-border);
  background: var(--at-surface);
  padding: 0.45rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 500;
}

body.atlas-ui .at-hints .px-hint-chip:hover {
  border-color: var(--at-accent);
  color: var(--at-accent);
  background: rgba(13, 122, 114, 0.06);
}

body.atlas-ui .px-home {
  min-height: auto;
  justify-content: flex-start;
  text-align: left;
  align-items: stretch;
  padding-top: 0;
  gap: 0;
}

body.atlas-ui .px-mode-hint {
  display: none;
}

body.atlas-ui .px-mode-badge {
  display: none;
}

/* —— Chat (daily thread-first) —— */
body.atlas-ui .at-chat {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  width: 100%;
}

body.atlas-ui .at-chat.hidden {
  display: none;
}

body.atlas-ui .at-chat-layout {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 0;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 0 0.75rem;
}

@media (max-width: 960px) {
  body.atlas-ui .at-chat-layout {
    grid-template-columns: 1fr;
  }

  body.atlas-ui .at-chat-rail {
    display: none;
  }

  body.atlas-ui .px-answer-block .px-sources {
    display: grid;
    margin-top: 1rem;
  }
}

body.atlas-ui .at-chat-main {
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
}

body.atlas-ui .at-chat-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0.5rem 0.65rem;
  border-bottom: 1px solid var(--at-border);
  flex-shrink: 0;
}

body.atlas-ui .at-chat-eyebrow {
  margin: 0 0 0.25rem;
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--at-muted);
}

body.atlas-ui .at-chat-title {
  margin: 0;
  font-family: var(--at-serif);
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.25;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

body.atlas-ui .at-chat-messages {
  flex: 1;
  overflow: auto;
  padding: 1rem 0.5rem 0.5rem;
  min-height: 0;
}

body.atlas-ui .at-chat-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1rem;
  min-height: 200px;
}

body.atlas-ui .at-chat-empty.hidden {
  display: none;
}

body.atlas-ui .at-chat-empty-lead {
  margin: 0 0 1rem;
  font-size: 1rem;
  color: var(--at-muted);
  max-width: 28rem;
  line-height: 1.5;
}

body.atlas-ui .at-chat-empty-hints {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  justify-content: center;
  max-width: 36rem;
}

body.atlas-ui .at-chat-footer {
  flex-shrink: 0;
  padding: 0.5rem 0.5rem calc(0.75rem + var(--px-safe-bottom));
  border-top: 1px solid var(--at-border);
  background: var(--at-canvas);
}

body.atlas-ui .at-followup-hints {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.55rem;
}

body.atlas-ui .at-followup-hints.hidden {
  display: none;
}

body.atlas-ui .at-followup-chip {
  border: 1px solid var(--at-border);
  background: var(--at-surface);
  color: var(--at-ink);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

body.atlas-ui .at-followup-chip:hover {
  border-color: var(--at-accent);
  color: var(--at-accent);
}

body.atlas-ui .at-composer-box {
  border-radius: var(--at-radius);
  border: 1px solid var(--at-border);
  background: var(--at-surface-elevated);
  box-shadow: var(--at-shadow);
}

body.atlas-ui .at-composer .px-search-row textarea {
  font-size: 1rem;
  min-height: 44px;
}

body.atlas-ui .at-composer-bar {
  padding-top: 0.15rem;
}

/* Right rail */
body.atlas-ui .at-chat-rail {
  border-left: 1px solid var(--at-border);
  padding: 0.85rem 0 0.85rem 1rem;
  overflow: auto;
  min-height: 0;
}

body.atlas-ui .at-rail-block {
  margin-bottom: 1.25rem;
}

body.atlas-ui .at-rail-heading {
  margin: 0 0 0.55rem;
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--at-muted);
}

body.atlas-ui .at-rail-count {
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
}

body.atlas-ui .at-rail-empty {
  margin: 0;
  font-size: 0.82rem;
  color: var(--at-muted);
  line-height: 1.45;
}

body.atlas-ui .at-rail-sources {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

body.atlas-ui .at-rail-source {
  display: flex;
  align-items: flex-start;
  gap: 0.45rem;
  padding: 0.45rem 0.5rem;
  border-radius: var(--at-radius-sm);
  border: 1px solid var(--at-border);
  background: var(--at-surface);
  text-decoration: none;
  color: inherit;
  font-size: 0.82rem;
  line-height: 1.35;
}

body.atlas-ui .at-rail-source:hover {
  border-color: var(--at-accent);
}

body.atlas-ui .at-rail-source-index {
  flex-shrink: 0;
  width: 1.25rem;
  font-weight: 650;
  color: var(--at-accent);
  font-size: 0.75rem;
}

body.atlas-ui .at-rail-source-title {
  display: block;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

body.atlas-ui .at-rail-source-domain {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.72rem;
  color: var(--at-muted);
}

body.atlas-ui .at-rail-meta {
  margin: 0;
  font-size: 0.82rem;
}

body.atlas-ui .at-rail-meta div {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--at-border);
}

body.atlas-ui .at-rail-meta dt {
  margin: 0;
  color: var(--at-muted);
}

body.atlas-ui .at-rail-meta dd {
  margin: 0;
  font-weight: 500;
  text-align: right;
}

body.atlas-ui .at-rail-project {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  border: 1px solid var(--at-border);
  border-radius: var(--at-radius-sm);
  background: var(--at-surface);
  padding: 0.55rem 0.65rem;
  cursor: pointer;
  font: inherit;
  text-align: left;
  color: var(--at-ink);
}

body.atlas-ui .at-rail-project:hover {
  border-color: var(--at-accent);
}

body.atlas-ui .at-rail-project-icon {
  color: var(--at-accent);
}

body.atlas-ui .px-turn {
  margin-bottom: 2rem;
}

body.atlas-ui .px-query {
  font-family: var(--at-serif);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
  padding-left: 0;
  border-left: none;
}

body.atlas-ui .px-answer {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  box-shadow: none;
  border-left: none;
  font-size: 1rem;
  line-height: 1.65;
  max-width: 720px;
}

body.atlas-ui .px-answer-block .px-sources {
  display: none;
}

body.atlas-ui .px-answer-block .px-related {
  display: none;
}

body.atlas-ui .px-export-bar {
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--at-border);
}


/* —— Composer controls —— */
body.atlas-ui .px-submit-btn {
  background: var(--at-accent);
  border-color: var(--at-accent);
}

body.atlas-ui .px-submit-btn:hover {
  background: var(--at-accent-hover);
}

body.atlas-ui .px-mode-trigger,
body.atlas-ui .px-model-trigger {
  border-radius: var(--at-radius-sm);
}

body.atlas-ui .px-model-trigger-icon {
  background: rgba(13, 122, 114, 0.1);
  color: var(--at-accent);
}

/* —— Space hub —— */
body.atlas-ui .px-space-hub {
  background: transparent;
}

body.atlas-ui .px-space-hub-main {
  background: transparent;
}

body.atlas-ui .px-space-hub-name {
  font-family: var(--at-serif);
}

body.atlas-ui .px-space-context {
  background: var(--at-surface);
  border-left-color: var(--at-border);
}

body.atlas-ui .px-space-tab.active {
  border-bottom-color: var(--at-accent);
  color: var(--at-accent);
}

/* —— Buttons —— */
body.atlas-ui .px-btn-primary {
  background: var(--at-accent);
  border-color: var(--at-accent);
}

body.atlas-ui .px-btn-primary:hover {
  background: var(--at-accent-hover);
}

/* —— Space hub: project workbench —— */
body.atlas-ui .px-space-hub {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 0 1.25rem;
}

body.atlas-ui .px-space-hub-layout {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 1rem;
  align-items: start;
}

@media (max-width: 960px) {
  body.atlas-ui .px-space-hub-layout {
    grid-template-columns: 1fr;
  }
}

body.atlas-ui .px-space-hub-main {
  background: var(--at-surface);
  border: 1px solid var(--at-border);
  border-radius: var(--at-radius);
  box-shadow: var(--at-shadow);
  padding: 0 1rem 1rem;
  min-height: 420px;
  display: flex;
  flex-direction: column;
}

body.atlas-ui .px-space-topbar {
  padding: 0.85rem 0 0.5rem;
  border-bottom: 1px solid var(--at-border);
  margin-bottom: 0.75rem;
}

body.atlas-ui .px-space-back {
  color: var(--at-muted);
  font-weight: 600;
}

body.atlas-ui .px-space-back:hover {
  color: var(--at-accent);
}

body.atlas-ui .px-space-hero {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.5rem 0 1rem;
  border-bottom: 1px solid var(--at-border);
  margin-bottom: 0.75rem;
}

body.atlas-ui .px-space-hero-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(13, 122, 114, 0.15), rgba(193, 127, 58, 0.15));
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

body.atlas-ui .px-space-hub-name {
  font-family: var(--at-serif);
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

body.atlas-ui .px-space-hub-desc {
  color: var(--at-muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

body.atlas-ui .px-space-tabs {
  border-bottom-color: var(--at-border);
}

body.atlas-ui .px-space-session-list {
  flex: 1;
  overflow: auto;
  min-height: 120px;
}

body.atlas-ui .px-space-dock {
  position: sticky;
  bottom: 0;
  padding-top: 0.75rem;
  margin-top: auto;
  background: linear-gradient(transparent, var(--at-surface) 35%);
}

body.atlas-ui .px-space-dock .px-search-box {
  border-radius: var(--at-radius-sm);
  border: 1px solid var(--at-border);
  background: var(--at-surface-elevated);
}

body.atlas-ui .px-space-context {
  background: var(--at-surface);
  border: 1px solid var(--at-border);
  border-radius: var(--at-radius);
  box-shadow: var(--at-shadow);
  border-left: none;
  padding: 0.85rem;
  max-height: calc(100vh - 120px);
  overflow: auto;
  position: sticky;
  top: 1rem;
}

body.atlas-ui .px-space-side-section {
  border-bottom-color: var(--at-border);
}

body.atlas-ui .px-space-side-head h3 {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--at-muted);
}

body.atlas-ui .px-space-memory {
  background: rgba(13, 122, 114, 0.04);
  border: 1px solid var(--at-border);
  border-radius: var(--at-radius-sm);
  padding: 0.85rem;
}

body.atlas-ui .px-space-memory-input {
  border-radius: var(--at-radius-sm);
  border-color: var(--at-border);
  background: var(--at-surface-elevated);
}

/* —— Modals & mobile —— */
body.atlas-ui .px-modal-card {
  border-radius: var(--at-radius);
}

@media (max-width: 768px) {
  body.atlas-ui .at-desk {
    padding: 1rem 1rem 0;
  }

  body.atlas-ui .px-header {
    padding: 0.55rem 0.85rem;
  }
}

/* —— Theme toggle —— */
body.atlas-ui .at-theme-toggle {
  color: var(--at-muted);
}

body.atlas-ui .at-theme-toggle:hover {
  color: var(--at-accent);
  background: var(--at-hover-subtle);
}

body.atlas-ui .at-theme-toggle .at-theme-icon-light,
body.atlas-ui .at-theme-toggle .at-theme-icon-dark {
  display: block;
}

body.atlas-ui.at-theme-light .at-theme-toggle .at-theme-icon-light {
  display: none;
}

body.atlas-ui.at-theme-dark .at-theme-toggle .at-theme-icon-dark {
  display: none;
}

body.atlas-ui.at-theme-dark .px-submit-btn {
  color: #0a1218;
}