:root {
  color-scheme: dark;
  --bg: #111210;
  --panel: #1b1c19;
  --panel-2: #24241f;
  --panel-3: #2e2d27;
  --text: #f3f1e8;
  --muted: #b7b1a4;
  --line: #3c3a32;
  --accent: #49a686;
  --accent-2: #d5a84e;
  --blue: #6f9dd8;
  --danger: #c45d5d;
  --danger-bg: #3a2020;
  --shadow: 0 18px 70px rgb(0 0 0 / 38%);
  --accent-shadow: 0 10px 26px rgb(73 166 134 / 22%);
  --focus-ring: 0 0 0 3px rgb(73 166 134 / 20%);
  --motion-fast: 120ms;
  --motion-medium: 180ms;
  --motion-ease: cubic-bezier(0.2, 0, 0.2, 1);
  --pane-transition:
    transform var(--motion-medium) var(--motion-ease),
    opacity var(--motion-medium) var(--motion-ease),
    box-shadow var(--motion-medium) var(--motion-ease),
    border-color var(--motion-medium) var(--motion-ease);
  --control-height: 38px;
  --control-bg: #121310;
  --panel-bg: rgb(27 28 25 / 92%);
  --workspace-bg: rgb(17 18 16 / 72%);
  --composer-bg: rgb(17 18 16 / 88%);
  --bubble-bg: rgb(27 28 25 / 86%);
  --card-bg: rgb(36 36 31 / 72%);
  --radius: 8px;
  --sidebar: clamp(280px, 18vw, 420px);
  --settings: clamp(340px, 22vw, 520px);
  --content-max: 1440px;
  --content-pad: clamp(10px, 1.2vw, 28px);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  overflow-x: hidden;
}

body {
  overflow: hidden;
  margin: 0;
  background:
    radial-gradient(circle at top left, rgb(73 166 134 / 12%), transparent 30rem),
    linear-gradient(135deg, #111210 0%, #171611 45%, #101315 100%);
  color: var(--text);
}

body::after {
  position: fixed;
  z-index: 15;
  inset: 0;
  pointer-events: none;
  background: rgb(0 0 0 / 45%);
  opacity: 0;
  transition: opacity var(--motion-medium) var(--motion-ease);
  content: "";
}

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

button,
select,
input,
textarea {
  border-radius: var(--radius);
}

button {
  border: 0;
  cursor: pointer;
  transition:
    transform var(--motion-fast) var(--motion-ease),
    border-color var(--motion-fast) var(--motion-ease),
    background-color var(--motion-fast) var(--motion-ease),
    box-shadow var(--motion-fast) var(--motion-ease);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

button:not(:disabled):hover {
  transform: translateY(-1px);
}

button:not(:disabled):active {
  transform: translateY(0);
}

button:focus-visible,
summary:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--focus-ring);
}

.icon-btn[aria-expanded="true"],
.small-btn[aria-pressed="true"] {
  border-color: rgb(73 166 134 / 55%);
  background: rgb(73 166 134 / 18%);
  color: var(--text);
}

.app-shell {
  --sidebar-width: var(--sidebar);
  --settings-width: var(--settings);
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr) var(--settings-width);
  height: 100dvh;
  min-height: 0;
  overflow: hidden;
  overflow-x: hidden;
  transition: grid-template-columns var(--motion-medium) var(--motion-ease);
}

.app-shell.sidebar-collapsed {
  --sidebar-width: 0px;
}

.app-shell.settings-collapsed {
  --settings-width: 0px;
}

.sidebar,
.settings-panel {
  background: var(--panel-bg);
  border-color: var(--line);
  border-style: solid;
  opacity: 1;
  transition: var(--pane-transition);
  will-change: transform, opacity;
}

.sidebar {
  border-width: 0 1px 0 0;
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  overflow: hidden;
}

.sidebar.collapsed,
.settings-panel.collapsed {
  opacity: 0;
  pointer-events: none;
  border-width: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px;
}

.brand > div {
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #101210;
  font-weight: 900;
  letter-spacing: 0;
  border-radius: 8px;
  box-shadow: 0 10px 34px rgb(73 166 134 / 26%);
}

.brand h1,
.settings-header h2,
.empty-state h2 {
  margin: 0;
  font-size: 18px;
  line-height: 1.1;
}

.brand p,
.settings-header p,
.chat-heading p,
.hint,
.status-line,
.empty-state p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.status-line.error {
  color: #ffd8d8;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.sidebar-actions,
.topbar-actions,
.button-row,
.composer-actions,
.section-title,
.message-actions,
.intent-actions,
.attachment-strip,
.attachment-tray {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.sidebar-actions {
  padding: 0 14px 14px;
}

.resource-links {
  display: grid;
  gap: 8px;
  margin: 0 14px 14px;
}

.side-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid rgb(213 168 78 / 35%);
  border-radius: 12px;
  background: rgb(213 168 78 / 12%);
  color: #f4f1e8;
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
}

.side-link:hover {
  background: rgb(213 168 78 / 18%);
}

.tool-link {
  align-items: flex-start;
  flex-direction: column;
  min-height: 54px;
  padding: 8px 12px;
  text-align: left;
}

.tool-link small {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.3;
}

.library-actions {
  display: flex;
  gap: 8px;
  padding: 0 14px 12px;
}

.library-actions button {
  flex: 1;
}

.primary-btn,
.send-btn,
.small-btn,
.danger-btn,
.icon-btn,
.file-btn {
  min-height: var(--control-height);
  border: 1px solid transparent;
  color: var(--text);
}

.primary-btn,
.send-btn {
  background: var(--accent);
  color: #07110d;
  font-weight: 750;
}

.primary-btn:hover,
.send-btn:hover {
  box-shadow: var(--accent-shadow);
}

.primary-btn {
  flex: 1;
}

.send-btn {
  min-width: 86px;
}

.small-btn,
.icon-btn,
.file-btn {
  background: var(--panel-2);
  border-color: var(--line);
}

.small-btn:hover,
.icon-btn:hover,
.file-btn:hover {
  border-color: rgb(73 166 134 / 45%);
  background: var(--panel-3);
}

.danger-btn {
  background: var(--danger-bg);
  border-color: rgb(196 93 93 / 55%);
  color: #ffd8d8;
}

.icon-btn,
.file-btn {
  display: grid;
  place-items: center;
  width: 40px;
  min-width: 40px;
  padding: 0;
  font-size: 18px;
}

.small-btn,
.danger-btn {
  padding: 0 12px;
}

.file-btn input {
  display: none;
}

.search-box,
.settings-card label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.search-box {
  padding: 0 14px 12px;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--control-bg);
  color: var(--text);
  outline: none;
}

input,
select {
  height: var(--control-height);
  padding: 0 10px;
}

textarea {
  resize: vertical;
  padding: 10px;
  line-height: 1.45;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: var(--focus-ring);
}

.conversation-list {
  flex: 1;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0 8px 14px;
}

.conversation-empty {
  padding: 12px 8px;
  color: var(--muted);
  font-size: 13px;
}

.conversation-folder {
  margin: 0 0 6px;
}

.folder-row,
.conversation-item {
  width: 100%;
  border: 1px solid transparent;
  border-radius: var(--radius);
}

.folder-row {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) 32px 32px;
  gap: 4px;
  align-items: center;
  padding: 4px;
  background: rgb(255 255 255 / 2%);
}

.folder-row:hover,
.folder-row.active,
.conversation-item:hover,
.conversation-item.active {
  background: var(--panel-2);
  border-color: var(--line);
}

.folder-toggle,
.folder-select,
.folder-action {
  min-height: 30px;
  padding: 0 8px;
  background: transparent;
  color: var(--muted);
}

.folder-select {
  overflow: hidden;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text);
  font-weight: 750;
}

.conversation-group {
  display: grid;
  gap: 6px;
  margin-top: 6px;
  padding-left: 10px;
}

.conversation-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 3px;
  margin: 0 0 6px;
  padding: 8px;
  text-align: left;
  background: transparent;
  color: var(--text);
}

.folder-row.depth-1,
.conversation-item.depth-1 {
  padding-left: 12px;
}

.folder-row.depth-2,
.conversation-item.depth-2 {
  padding-left: 16px;
}

.folder-row.depth-3,
.conversation-item.depth-3 {
  padding-left: 20px;
}

.folder-row.depth-4,
.folder-row.depth-5,
.folder-row.depth-6,
.conversation-item.depth-4,
.conversation-item.depth-5,
.conversation-item.depth-6 {
  padding-left: 24px;
}

.conversation-open {
  min-width: 0;
  padding: 0;
  background: transparent;
  color: var(--text);
  text-align: left;
}

.conversation-controls {
  position: relative;
}

.conversation-controls summary {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  cursor: pointer;
  color: var(--muted);
  list-style: none;
}

.conversation-controls summary::-webkit-details-marker {
  display: none;
}

.conversation-controls:not([open]) > .conversation-menu {
  display: none;
}

.conversation-menu {
  position: absolute;
  z-index: 8;
  top: 32px;
  right: 0;
  display: grid;
  gap: 6px;
  width: min(240px, 72vw);
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-bg);
  box-shadow: var(--shadow);
}

.conversation-menu button,
.conversation-menu select {
  min-height: 32px;
}

.conversation-open strong {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
}

.conversation-open span {
  display: block;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
}

.conversation-folder-count {
  color: var(--muted);
  font-size: 11px;
}

.workspace {
  display: grid;
  grid-template-rows: auto auto auto minmax(0, 1fr) auto;
  min-height: 0;
  min-width: 0;
  overflow: hidden;
  background: var(--workspace-bg);
}

.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  max-width: var(--content-max);
  min-height: 70px;
  margin: 0 auto;
  padding: 12px var(--content-pad);
  border-bottom: 1px solid var(--line);
}

.chat-heading {
  min-width: 0;
  flex: 1;
}

.chat-heading p {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#chatTitleInput {
  height: 30px;
  padding: 0;
  border: 0;
  background: transparent;
  font-size: 20px;
  font-weight: 800;
}

.topbar-actions {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) minmax(150px, 0.8fr) 40px;
  width: min(560px, 52vw);
  min-width: 0;
  flex: 0 1 min(560px, 52vw);
}

.topbar-actions > select,
.topbar-actions > input {
  min-width: 0;
}

.notice,
.readiness {
  width: calc(100% - (var(--content-pad) * 2));
  max-width: calc(var(--content-max) - (var(--content-pad) * 2));
  margin: 12px auto 0;
  padding: 10px 12px;
  border: 1px solid rgb(213 168 78 / 35%);
  background: linear-gradient(135deg, rgb(213 168 78 / 12%), rgb(73 166 134 / 8%));
  color: #ead7a8;
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.45;
}

.readiness {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-color: rgb(73 166 134 / 35%);
  background: rgb(73 166 134 / 9%);
  color: var(--text);
}

.readiness strong {
  display: block;
}

.readiness p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.readiness.warning {
  border-color: rgb(213 168 78 / 44%);
  background: rgb(213 168 78 / 10%);
}

.readiness.error {
  border-color: rgb(196 93 93 / 55%);
  background: rgb(58 32 32 / 75%);
}

.next-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.next-actions button {
  flex: 0 1 160px;
}

.next-actions:empty {
  display: none;
}

.message-list {
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--content-pad);
}

.message {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 14px;
  margin: 0 0 18px;
}

.message.assistant {
  grid-template-columns: 82px minmax(0, 1fr);
}

.role {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  line-height: 1.4;
  padding-top: 9px;
  text-transform: uppercase;
}

.bubble {
  min-width: 0;
  max-width: 100%;
  border: 1px solid var(--line);
  background: var(--bubble-bg);
  border-radius: var(--radius);
  padding: 13px 14px;
  box-shadow: 0 1px 0 rgb(255 255 255 / 3%) inset;
}

.message.user .bubble {
  border-color: rgb(73 166 134 / 45%);
}

.message.error .bubble {
  border-color: rgb(196 93 93 / 65%);
  background: rgb(58 32 32 / 86%);
}

.message-actions {
  margin-top: 10px;
}

.message-actions button {
  min-height: 30px;
  padding: 0 9px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--muted);
}

.markdown {
  max-width: 100%;
  overflow-wrap: anywhere;
  font-size: 15px;
  line-height: 1.6;
}

.markdown > :first-child {
  margin-top: 0;
}

.markdown > :last-child {
  margin-bottom: 0;
}

.markdown pre {
  overflow-x: hidden;
  overflow-y: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  padding: 12px;
  background: #0b0d0c;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.markdown code {
  background: #0b0d0c;
  border: 1px solid rgb(255 255 255 / 8%);
  border-radius: 5px;
  padding: 1px 5px;
}

.markdown pre code {
  border: 0;
  padding: 0;
}

.markdown blockquote {
  margin-left: 0;
  padding-left: 12px;
  border-left: 3px solid var(--accent-2);
  color: #d8d0bd;
}

.attachment-strip {
  margin: 0 0 10px;
}

.attachment-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: min(260px, 100%);
  padding: 6px 8px;
  border: 1px solid var(--line);
  background: #111310;
  border-radius: 8px;
  color: var(--muted);
  font-size: 12px;
}

.attachment-chip img {
  width: 32px;
  height: 32px;
  object-fit: cover;
  border-radius: 5px;
}

.attachment-chip button {
  min-height: 24px;
  width: 24px;
  background: var(--danger-bg);
  color: #ffd8d8;
}

.composer-panel {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 12px var(--content-pad) max(14px, env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  background: var(--composer-bg);
}

.intent-actions {
  margin-bottom: 8px;
}

.intent-actions:empty {
  display: none;
}

.intent-actions button {
  min-height: 32px;
  padding: 0 10px;
  color: var(--muted);
}

.prompt-quick-panel {
  display: grid;
  gap: 6px;
  margin-bottom: 8px;
  padding: 8px;
  border: 1px solid rgb(73 166 134 / 32%);
  border-radius: var(--radius);
  background: rgb(27 28 25 / 94%);
  box-shadow: 0 14px 38px rgb(0 0 0 / 28%);
}

.prompt-quick-panel[hidden] {
  display: none;
}

.prompt-quick-panel button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 36px;
  padding: 0 10px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text);
  text-align: left;
}

.prompt-quick-panel span {
  color: var(--muted);
  font-size: 12px;
}

.prompt-variable-panel {
  display: grid;
  gap: 10px;
}

.prompt-variable-panel > div:first-child {
  display: grid;
  gap: 2px;
}

.prompt-variable-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(180px, 100%), 1fr));
  gap: 8px;
}

.prompt-variable-grid label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.prompt-variable-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.prompt-variable-actions .primary-btn,
.prompt-variable-actions .small-btn {
  flex: 0 1 auto;
}

.attachment-tray {
  margin-bottom: 8px;
}

.composer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: end;
}

.composer-actions {
  justify-content: end;
  min-width: 0;
}

#promptInput {
  min-height: 72px;
  max-height: 34vh;
  overflow-x: hidden;
  overflow-y: auto;
}

.settings-panel {
  border-width: 0 0 0 1px;
  min-height: 0;
  min-width: 0;
  overflow: hidden;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
}

.settings-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 10px;
  padding: 18px;
  border-bottom: 1px solid var(--line);
}

.settings-scroll {
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 14px;
}

.settings-card,
.settings-details-body {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.settings-card {
  margin-bottom: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  background: var(--card-bg);
  border-radius: var(--radius);
}

.settings-card-collapsible {
  display: block;
  padding: 0;
  overflow: hidden;
}

.settings-card-collapsible > summary,
.settings-details > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 800;
  list-style: none;
}

.settings-card-collapsible > summary {
  padding: 14px;
}

.settings-card-collapsible > summary::-webkit-details-marker,
.settings-details > summary::-webkit-details-marker {
  display: none;
}

.settings-card-collapsible > summary::after,
.settings-details > summary::after {
  color: var(--muted);
  content: "▾";
  transition: transform var(--motion-medium) var(--motion-ease);
}

.settings-card-collapsible:not([open]) > summary::after,
.settings-details:not([open]) > summary::after {
  transform: rotate(-90deg);
}

.settings-details {
  margin-top: 2px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: rgb(17 19 16 / 46%);
  border-radius: var(--radius);
}

.settings-card-collapsible > .settings-details-body {
  padding: 0 14px 14px;
}

.settings-details > .settings-details-body {
  padding-top: 12px;
}

#promptLibrarySelect,
#workspaceFileSelect {
  height: auto;
  min-height: 132px;
  padding: 6px;
}

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

.section-title h3 {
  margin: 0;
  font-size: 15px;
}

.control-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.check-row {
  display: flex !important;
  grid-template-columns: auto 1fr;
  flex-direction: row;
  align-items: center;
  gap: 9px !important;
  text-transform: none !important;
  letter-spacing: 0 !important;
  font-weight: 650 !important;
}

.check-row input {
  width: 18px;
  height: 18px;
}

.workspace-trace {
  display: grid;
  gap: 8px;
  max-height: 280px;
  overflow-x: hidden;
  overflow-y: auto;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #0b0d0c;
}

.trace-empty {
  color: var(--muted);
  font-size: 13px;
}

.trace-entry {
  display: grid;
  gap: 6px;
  padding: 9px;
  border: 1px solid rgb(73 166 134 / 24%);
  border-radius: 6px;
  background: rgb(255 255 255 / 3%);
}

.trace-entry.error {
  border-color: rgb(196 93 93 / 55%);
  background: rgb(58 32 32 / 50%);
}

.trace-entry > div {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.trace-entry span,
.trace-entry p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.trace-entry pre {
  margin: 0;
  max-height: 220px;
  overflow-x: hidden;
  overflow-y: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 12px;
  line-height: 1.45;
}

.empty-state {
  position: relative;
  width: min(620px, 100%);
  margin: 9vh auto;
  padding: clamp(16px, 4vw, 26px);
  border: 1px solid rgb(73 166 134 / 30%);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgb(73 166 134 / 12%), transparent),
    rgb(27 28 25 / 70%);
  box-shadow: 0 18px 60px rgb(0 0 0 / 22%);
  text-align: center;
}

.empty-state::before {
  display: block;
  width: 44px;
  height: 5px;
  margin: 0 auto 16px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--blue));
  content: "";
}

.toast-region {
  position: fixed;
  z-index: 40;
  right: max(14px, env(safe-area-inset-right));
  bottom: max(14px, env(safe-area-inset-bottom));
  display: grid;
  gap: 8px;
  width: min(420px, calc(100vw - 28px));
  pointer-events: none;
}

.toast {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  background: rgb(27 28 25 / 96%);
  box-shadow: var(--shadow);
  color: var(--text);
  pointer-events: auto;
}

.toast.error {
  border-left-color: var(--danger);
}

.toast.info {
  border-left-color: var(--blue);
}

.toast strong {
  display: block;
  margin-bottom: 2px;
}

.toast p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
}

.toast button {
  min-height: 32px;
  padding: 0 9px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text);
}

.mobile-only {
  display: none;
}

#settingsBtn {
  display: grid;
}

#closeSettingsBtn {
  display: grid;
}

@media (max-width: 1600px) {
  .app-shell {
    grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  }

  body.overlay-open::after {
    pointer-events: auto;
    opacity: 1;
  }

  .settings-panel {
    position: fixed;
    z-index: 20;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(var(--settings), 94vw);
    opacity: 0;
    transform: translateX(102%);
    box-shadow: var(--shadow);
  }

  .settings-panel.open {
    opacity: 1;
    transform: translateX(0);
  }
}

@media (max-width: 980px) {
  .app-shell {
    grid-template-columns: 1fr;
    min-height: 100dvh;
    height: 100dvh;
  }

  .sidebar {
    position: fixed;
    z-index: 25;
    top: 0;
    bottom: 0;
    left: 0;
    width: min(var(--sidebar), 88vw);
    opacity: 0;
    transform: translateX(-102%);
    box-shadow: var(--shadow);
  }

  .sidebar.open {
    opacity: 1;
    transform: translateX(0);
  }

  .mobile-only {
    display: grid;
  }

  .topbar {
    align-items: stretch;
    flex-wrap: wrap;
    gap: 8px;
    min-height: auto;
    padding-top: 8px;
    padding-bottom: 8px;
  }

  .topbar .icon-btn {
    width: 36px;
    min-width: 36px;
    min-height: 36px;
  }

  #chatTitleInput {
    height: 24px;
    font-size: 16px;
  }

  .chat-heading p {
    margin-top: 0;
    font-size: 12px;
  }

  .chat-heading {
    flex-basis: calc(100% - 44px);
  }

  .topbar-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) 36px;
    gap: 8px;
    min-width: 100%;
    flex-basis: 100%;
  }

  .notice,
  .readiness {
    margin-top: 6px;
    padding: 7px 10px;
    font-size: 12px;
  }

  .notice {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .readiness {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 8px;
  }

  .readiness strong {
    display: inline;
    margin-right: 6px;
  }

  .readiness p {
    display: inline;
    margin: 0;
    font-size: 12px;
  }

  .readiness > div:first-child {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .next-actions {
    flex-wrap: nowrap;
    justify-content: flex-end;
    gap: 6px;
  }

  .next-actions button {
    flex: 0 0 auto;
    min-height: 36px;
    padding: 0 10px;
  }

  .message-list,
  .composer-panel {
    padding-left: 10px;
    padding-right: 10px;
  }

  .message,
  .message.assistant {
    grid-template-columns: 1fr;
    gap: 5px;
    margin-bottom: 12px;
  }

  .role {
    padding-top: 0;
  }

  .bubble {
    padding: 10px 12px;
  }

  .composer {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
  }

  .composer-actions {
    flex-wrap: nowrap;
    justify-content: end;
  }

  #promptInput {
    min-height: 58px;
    max-height: 24vh;
  }
}

@media (max-width: 420px) {
  .brand,
  .settings-header,
  .settings-scroll {
    padding-left: 12px;
    padding-right: 12px;
  }

  .sidebar-actions {
    padding-left: 10px;
    padding-right: 10px;
  }

  .topbar {
    gap: 10px;
  }

  .composer-panel {
    padding-top: 8px;
    padding-bottom: max(8px, env(safe-area-inset-bottom));
  }

  .intent-actions {
    display: none;
  }

  .composer {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .topbar-actions {
    grid-template-columns: minmax(0, 1fr) 40px;
  }

  #providerSelect {
    grid-column: 1 / -1;
  }

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

  .small-btn,
  .danger-btn,
  .send-btn {
    min-width: 0;
  }
}

@media (max-width: 620px) {
  .next-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 820px) {
  .topbar {
    display: grid;
    grid-template-columns: 36px minmax(0, 1fr) 36px;
    align-items: center;
  }

  .chat-heading {
    flex-basis: auto;
  }

  .topbar-actions {
    display: grid;
    grid-column: 3;
    grid-row: 1;
    grid-template-columns: 36px;
    width: 36px;
    min-width: 0;
    flex-basis: auto;
  }

  .topbar-actions > select,
  .topbar-actions > input {
    display: none;
  }
}

@media (max-height: 820px) and (max-width: 1600px) {
  .topbar {
    min-height: 0;
    padding-top: 8px;
    padding-bottom: 8px;
  }

  .notice,
  .readiness {
    margin-top: 6px;
    padding: 7px 10px;
  }

  .notice {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .readiness {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 8px;
    min-height: 0;
  }

  .readiness > div:first-child {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .readiness strong,
  .readiness p {
    display: inline;
  }

  .readiness p {
    margin: 0;
  }

  .next-actions {
    flex-wrap: nowrap;
    gap: 6px;
  }

  .next-actions button {
    flex: 0 0 auto;
    min-height: 36px;
    padding: 0 10px;
  }

  .message-list {
    padding-top: 10px;
    padding-bottom: 10px;
  }

  .intent-actions {
    display: none;
  }

  .message,
  .message.assistant {
    margin-bottom: 12px;
  }

  .composer-panel {
    padding-top: 8px;
    padding-bottom: max(8px, env(safe-area-inset-bottom));
  }

  .composer {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
  }

  .composer-actions {
    flex-wrap: nowrap;
  }

  #promptInput {
    min-height: 58px;
    max-height: 22vh;
  }
}

@media (max-width: 620px) {
  .notice {
    white-space: normal;
  }

  .readiness {
    grid-template-columns: minmax(0, 1fr);
  }

  .readiness > div:first-child {
    overflow: visible;
    text-overflow: clip;
    white-space: normal;
  }

  .readiness strong,
  .readiness p {
    display: block;
  }

  .readiness p {
    margin: 3px 0 0;
  }

  .next-actions {
    margin-top: 8px;
  }

  .next-actions button {
    flex: 1 1 110px;
  }
}

@media (max-width: 820px) {
  .readiness > div:first-child {
    overflow: visible;
    text-overflow: clip;
    white-space: normal;
  }

  .readiness strong,
  .readiness p {
    display: block;
  }

  .readiness p {
    margin: 3px 0 0;
  }
}

@media (max-width: 420px) {
  .notice,
  .readiness p {
    display: -webkit-box;
    overflow: hidden;
    -webkit-box-orient: vertical;
  }

  .notice {
    -webkit-line-clamp: 2;
  }

  .readiness p {
    -webkit-line-clamp: 2;
  }

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

  .composer-actions {
    justify-content: stretch;
  }

  .composer-actions .send-btn {
    flex: 1 1 auto;
  }

  #promptInput {
    height: 54px;
    min-height: 54px;
    max-height: 18vh;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  button:not(:disabled):hover {
    transform: none;
  }
}