.app-shell {
  display: grid;
  grid-template-rows: auto 1fr auto;
  width: var(--ui-canvas-width);
  height: var(--ui-canvas-height);
  min-height: 0;
  transform: scale(var(--ui-scale));
  transform-origin: top left;
}

.topbar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 13px 22px;
  border-bottom: 1px solid var(--line);
  background: rgba(8, 12, 20, 0.86);
  backdrop-filter: blur(22px) saturate(1.16);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0;
  min-width: 0;
}

.brand h1 {
  margin: 0;
  color: var(--accent-strong);
  font-size: var(--brand-font-size);
  line-height: 1.2;
  font-weight: 720;
}

.topbar-status {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 8px;
  min-width: 0;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-width: 0;
  min-height: 28px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-soft);
  background: rgba(148, 163, 184, 0.07);
  font-size: 12px;
  white-space: nowrap;
}

.scale-toggle {
  justify-content: center;
  cursor: pointer;
  transition:
    border-color 180ms ease,
    background 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.scale-toggle:hover {
  border-color: var(--line-strong);
  color: var(--accent-strong);
  background: rgba(var(--accent-rgb), 0.11);
  transform: translateY(-1px);
}

.server-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 16px rgba(var(--accent-rgb), 0.56);
}

#active-model-label {
  max-width: var(--model-label-width);
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-scroll {
  min-height: 0;
  overflow-y: auto;
  scroll-behavior: smooth;
}

.message-list {
  width: min(var(--chat-width), 100%);
  min-height: 100%;
  margin: 0 auto;
  padding:
    var(--message-list-pad-top)
    var(--message-list-pad-x)
    var(--message-list-pad-bottom);
}

.welcome-panel {
  width: min(var(--welcome-width), 100%);
  max-width: var(--welcome-width);
  margin: var(--welcome-offset-top) auto var(--welcome-offset-bottom);
  padding: 0;
  color: var(--muted-strong);
  text-align: center;
  animation: panel-rise 320ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.welcome-kicker {
  width: max-content;
  margin: 0 auto 12px;
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 740;
  letter-spacing: 0;
  text-transform: uppercase;
}

.welcome-panel h2 {
  margin: 0;
  color: var(--accent-strong);
  font-size: var(--welcome-heading-size);
  line-height: 1.12;
  font-weight: 720;
}

.model-picker-panel {
  margin-top: 24px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(148, 163, 184, 0.035)),
    rgba(13, 20, 32, 0.9);
  box-shadow: var(--shadow);
  text-align: left;
}

.start-select-control {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 12px;
  min-height: 42px;
  padding: 4px 4px 4px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(148, 163, 184, 0.07);
}

.start-select-control > span {
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.native-select {
  display: none !important;
}

.custom-select {
  position: relative;
  min-width: 0;
  width: 100%;
}

.custom-select-trigger {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 34px;
  padding: 0 10px 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.065), rgba(148, 163, 184, 0.04)),
    rgba(13, 20, 32, 0.94);
  cursor: pointer;
  text-align: left;
  transition:
    border-color 180ms ease,
    background 180ms ease,
    color 180ms ease,
    box-shadow 180ms ease;
}

.custom-select-trigger:hover,
.custom-select.is-open .custom-select-trigger {
  border-color: rgba(var(--accent-rgb), 0.46);
  color: var(--accent-strong);
  background:
    linear-gradient(180deg, rgba(var(--accent-rgb), 0.13), rgba(255, 255, 255, 0.04)),
    rgba(13, 20, 32, 0.98);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.1);
}

.custom-select-trigger:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  box-shadow: none;
}

.custom-select-trigger > span:first-child {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.custom-select-chevron {
  display: grid;
  place-items: center;
  width: 16px;
  height: 16px;
  color: var(--accent-strong);
  font-size: 11px;
  transition: transform 180ms ease;
}

.custom-select.is-open .custom-select-chevron {
  transform: rotate(180deg);
}

.custom-select-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  z-index: 30;
  display: grid;
  gap: 2px;
  max-height: var(--select-menu-max-height);
  overflow: auto;
  padding: 5px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(148, 163, 184, 0.035)),
    rgba(8, 13, 22, 0.98);
  box-shadow:
    0 22px 54px rgba(0, 0, 0, 0.42),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.custom-select-menu[hidden] {
  display: none;
}

.composer-toolbar .custom-select-menu {
  top: auto;
  bottom: calc(100% + 6px);
}

.custom-select-option {
  display: grid;
  gap: 3px;
  width: 100%;
  min-height: 36px;
  padding: 9px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  color: var(--text-soft);
  background: transparent;
  cursor: pointer;
  text-align: left;
}

.custom-select-option:hover,
.custom-select-option:focus-visible {
  outline: 0;
  border-color: rgba(var(--accent-rgb), 0.3);
  color: var(--text);
  background: rgba(var(--accent-rgb), 0.11);
}

.custom-select-option.is-selected {
  border-color: rgba(var(--accent-rgb), 0.42);
  color: var(--accent-strong);
  background: rgba(var(--accent-rgb), 0.15);
}

.custom-select-option-label {
  min-width: 0;
  overflow: hidden;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.custom-select-option-meta {
  min-width: 0;
  overflow: hidden;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.start-model-info {
  margin: 10px 2px 12px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.start-model-list {
  display: grid;
  gap: 2px;
  max-height: 244px;
  overflow: auto;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(2, 6, 13, 0.28);
}

.start-model-row {
  display: grid;
  gap: 4px;
  width: 100%;
  padding: 11px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  color: var(--text-soft);
  background: transparent;
  cursor: pointer;
  text-align: left;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.start-model-row:hover {
  transform: translateY(-1px);
  border-color: var(--line);
  background: rgba(148, 163, 184, 0.08);
}

.start-model-row.is-active {
  border-color: rgba(var(--accent-rgb), 0.44);
  color: var(--text);
  background: rgba(var(--accent-rgb), 0.13);
}

.start-model-row:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

.start-model-name {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.25;
}

.start-model-path {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.message {
  display: flex;
  margin: 18px 0;
  animation: message-in 210ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.message-user {
  justify-content: flex-end;
}

.message-assistant {
  justify-content: flex-start;
}

.message-inner {
  width: min(var(--message-width), 100%);
}

.message-user .message-inner {
  width: min(var(--user-message-width), 86%);
}

.message-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 18px;
  margin: 0 2px 6px;
  color: var(--muted);
  font-size: 12px;
}

.message-user .message-meta {
  justify-content: flex-end;
}

.message-actions {
  position: relative;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
  min-height: 24px;
  margin: 7px 2px 0;
  color: var(--muted);
  font-size: 12px;
}

.message-user .message-actions {
  justify-content: flex-end;
}

.message-action-button {
  min-height: 24px;
  padding: 3px 0;
  color: var(--muted-strong);
  background: transparent;
  cursor: pointer;
  transition:
    color 160ms ease,
    opacity 160ms ease;
}

.message-action-button:hover:not(:disabled) {
  color: var(--accent-strong);
}

.message-action-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.message-action-separator {
  width: 5px;
  height: 5px;
  margin: 0 2px;
  border-radius: 999px;
  background: rgba(var(--accent-rgb), 0.48);
}

.message-action-tokens {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.message-action-speed {
  color: var(--accent-strong);
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.message-action-speed[hidden] {
  display: none;
}

.message-action-status {
  color: var(--accent-strong);
  min-width: 0;
}

.json-save-panel {
  display: grid;
  flex-basis: 100%;
  gap: 8px;
  width: min(560px, 100%);
  margin-top: 2px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(8, 13, 22, 0.96);
}

.json-save-panel[hidden] {
  display: none;
}

.json-save-file-row {
  display: grid;
  grid-template-columns: minmax(126px, 1fr) minmax(118px, 1fr) auto auto;
  gap: 6px;
  align-items: center;
}

.json-save-select,
.json-save-input,
.json-pair-textarea {
  min-width: 0;
  min-height: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 4px 8px;
  color: var(--text-soft);
  background: rgba(148, 163, 184, 0.07);
}

.json-pair-panel {
  display: grid;
  gap: 7px;
}

.json-pair-panel[hidden] {
  display: none;
}

.json-pair-textarea {
  width: 100%;
  min-height: 112px;
  padding: 8px 10px;
  line-height: 1.45;
  resize: vertical;
}

.json-pair-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 9px;
}

.json-pair-hint {
  min-width: 0;
  margin-right: auto;
  color: var(--muted);
}

.json-save-confirm {
  padding: 4px 8px;
}

@media (max-width: 720px) {
  .json-save-file-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .json-save-confirm,
  .json-save-pair-toggle {
    justify-self: start;
  }
}

.message-role {
  color: var(--accent-strong);
  font-weight: 720;
}

.message-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-soft);
  font-variant-numeric: tabular-nums;
}

.bubble {
  position: relative;
  border: 0;
  border-radius: 0;
  padding: 2px 0;
  line-height: 1.62;
  overflow-wrap: anywhere;
}

.user-bubble {
  margin-left: auto;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  color: #eef6ff;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(148, 163, 184, 0.025)),
    rgba(15, 23, 42, 0.92);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.18);
  animation: bubble-float-in 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.assistant-content {
  display: grid;
  gap: 12px;
}

.solution-panel {
  position: relative;
  overflow: hidden;
  border: 0;
  border-radius: 0;
  color: var(--text-soft);
  background: transparent;
  box-shadow: none;
  animation: content-fade-in 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

.solution-header {
  display: flex;
  align-items: center;
  min-height: 20px;
  padding: 0 0 5px;
  border-bottom: 0;
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0;
  text-transform: uppercase;
}

.solution-text {
  padding: 2px 0 0;
  color: #edf6ff;
  font-size: var(--solution-font-size);
  line-height: 1.65;
  overflow-wrap: anywhere;
}

.rich-text {
  white-space: normal;
}

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

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

.rich-text p {
  margin: 0 0 12px;
}

.rich-text h1,
.rich-text h2,
.rich-text h3,
.rich-text h4 {
  margin: 18px 0 10px;
  color: var(--accent-strong);
  line-height: 1.25;
  font-weight: 720;
}

.rich-text h1 {
  font-size: var(--rich-h1-size);
}

.rich-text h2 {
  font-size: var(--rich-h2-size);
}

.rich-text h3 {
  font-size: var(--rich-h3-size);
}

.rich-text h4 {
  font-size: var(--rich-h4-size);
  color: var(--text-soft);
}

.rich-text strong {
  color: #f7fbff;
  font-weight: 760;
}

.rich-text em {
  color: #d9ecff;
}

.rich-text ul,
.rich-text ol {
  margin: 8px 0 12px;
  padding-left: 22px;
}

.rich-text li {
  margin: 5px 0;
}

.rich-text code {
  padding: 2px 5px;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: #dbeafe;
  background: rgba(var(--accent-rgb), 0.11);
  font-family: var(--mono);
  font-size: 13px;
}

.rich-text pre {
  position: relative;
  margin: 12px 0 14px;
  padding: 12px 14px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(0, 0, 0, 0.26);
}

.rich-text pre[data-language]::before {
  content: attr(data-language);
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-family: var(--font);
  font-size: 11px;
  text-transform: uppercase;
}

.rich-text pre code {
  display: block;
  padding: 0;
  border: 0;
  border-radius: 0;
  color: #dbeafe;
  background: transparent;
  white-space: pre;
}

.message-assistant.is-streaming .solution-text > :last-child::after,
.message-assistant.is-streaming .reasoning-text > :last-child::after {
  content: "";
  display: inline-block;
  width: 14px;
  height: 0.9em;
  margin-left: 4px;
  vertical-align: -0.12em;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(244, 244, 245, 0.24),
    rgba(var(--accent-rgb), 0.42),
    transparent
  );
  background-size: 220% 100%;
  animation: text-shine 1.25s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.solution-text .katex-display {
  margin: 0.52em 0;
}

.solution-text .katex .fbox {
  border-color: rgba(var(--accent-rgb), 0.5);
  border-radius: 5px;
  box-shadow: 0 0 18px rgba(var(--accent-rgb), 0.11);
}

.error-bubble {
  color: #ffd7dc;
  border-color: rgba(255, 125, 146, 0.34);
  background: rgba(255, 125, 146, 0.09);
}

.spinner {
  width: 12px;
  height: 12px;
  border: 2px solid rgba(255, 255, 255, 0.14);
  border-top-color: var(--accent);
  border-radius: 50%;
  transform-origin: 50% 50%;
  will-change: transform;
  animation: spin 760ms linear infinite;
}

.message-status .spinner[hidden] {
  display: none;
}

.composer-wrap {
  position: relative;
  z-index: 2;
  padding:
    8px max(var(--composer-side-pad), env(safe-area-inset-left))
    calc(var(--composer-bottom-pad) + env(safe-area-inset-bottom))
    max(var(--composer-side-pad), env(safe-area-inset-right));
  border-top: 0;
  background:
    linear-gradient(180deg, rgba(5, 7, 13, 0), rgba(8, 12, 20, 0.74) 24%, rgba(5, 7, 13, 0.98));
  backdrop-filter: none;
}

.composer-panel {
  width: min(var(--chat-width), 100%);
  margin: 0 auto;
}

.settings-drawer {
  width: 100%;
  max-width: 100%;
  margin: 0 0 10px 0;
  position: relative;
}

.settings-drawer[open] {
  width: 100%;
}

.settings-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 30px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-soft);
  background: rgba(148, 163, 184, 0.07);
  cursor: pointer;
  font-size: 12px;
  list-style: none;
  transition:
    background 240ms cubic-bezier(0.2, 0.8, 0.2, 1),
    border-color 240ms cubic-bezier(0.2, 0.8, 0.2, 1),
    color 240ms cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 240ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.settings-tab::-webkit-details-marker {
  display: none;
}

.settings-tab svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.settings-tab:hover,
.settings-drawer[open] .settings-tab {
  border-color: var(--line-strong);
  color: var(--accent-strong);
  background: rgba(var(--accent-rgb), 0.11);
  transform: translateY(-1px);
}

.composer-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px 158px 124px;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  margin-top: 8px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(148, 163, 184, 0.035)),
    rgba(10, 16, 27, 0.95);
  box-shadow: var(--shadow);
}

.setting-model {
  grid-column: 1 / -1;
}

.setting-control {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  width: 100%;
  min-height: 36px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  color: var(--text-soft);
  background: rgba(148, 163, 184, 0.06);
  font-size: 12px;
  white-space: nowrap;
}

.setting-control > span {
  color: var(--accent-strong);
  font-weight: 700;
  text-transform: uppercase;
}

.setting-control input,
.setting-control select {
  min-width: 0;
  border: 0;
  outline: 0;
  color: var(--text-soft);
  background: transparent;
  font: inherit;
}

.setting-model .custom-select {
  min-width: 0;
}

.setting-temperature input {
  width: 72px;
  accent-color: var(--accent);
}

.setting-temperature output {
  min-width: 34px;
  color: var(--accent-strong);
  font-variant-numeric: tabular-nums;
}

.setting-fast {
  justify-content: space-between;
}

.setting-fast input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

.modern-select {
  flex: 1;
  width: 100%;
  height: 34px;
  padding: 0 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.065), rgba(148, 163, 184, 0.035)),
    rgba(13, 20, 32, 0.94);
  color-scheme: dark;
  cursor: pointer;
}

.setting-tokens input {
  width: 58px;
  color: var(--text);
  text-align: right;
}

.setting-control input:disabled,
.setting-control select:disabled {
  opacity: 0.6;
}

.composer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  min-height: 56px;
  padding: 8px 9px 8px 18px;
  border: 1px solid var(--line-strong);
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.082), rgba(148, 163, 184, 0.04)),
    rgba(10, 16, 27, 0.97);
  box-shadow:
    0 18px 48px rgba(0, 0, 0, 0.34),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  animation: composer-float-in 260ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.composer:focus-within {
  border-color: rgba(var(--accent-rgb), 0.5);
  box-shadow:
    0 18px 48px rgba(0, 0, 0, 0.36),
    0 0 0 4px rgba(var(--accent-rgb), 0.13),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

#prompt-input {
  width: 100%;
  max-height: 160px;
  min-height: 38px;
  resize: none;
  border: 0;
  outline: 0;
  padding: 9px 4px 7px 0;
  background: transparent;
  color: #f6fbff;
  line-height: 1.48;
  font-size: var(--prompt-font-size);
}

#prompt-input::placeholder {
  color: #7f8da3;
}

.composer-actions {
  display: grid;
  place-items: end;
  align-self: end;
  width: 38px;
  grid-template-areas: "action";
}

.send-button,
.stop-button {
  grid-area: action;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: var(--button-text);
  background: var(--button-gradient);
  cursor: pointer;
  box-shadow:
    0 9px 24px rgba(0, 0, 0, 0.26),
    inset 0 1px 0 rgba(255, 255, 255, 0.88);
  transition:
    transform 260ms cubic-bezier(0.2, 0.8, 0.2, 1),
    background 220ms cubic-bezier(0.2, 0.8, 0.2, 1),
    opacity 160ms ease;
}

.composer-actions > [hidden] {
  display: none !important;
}

.stop-button {
  color: #31131a;
  background: linear-gradient(135deg, #ffffff 0%, #fff1f3 46%, #ffd1da 100%);
}

.send-button svg,
.stop-button svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.35;
}

.send-button:hover,
.stop-button:hover {
  transform: translateY(-1px);
}

.send-button:hover {
  background: linear-gradient(135deg, #ffffff 0%, #f7fbff 42%, #d8eaff 100%);
}

.stop-button:hover {
  background: linear-gradient(135deg, #ffffff 0%, #fff7f8 42%, #ffdce4 100%);
}

.send-button:disabled,
.stop-button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
  transform: none;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes panel-rise {
  from {
    transform: translateY(8px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes message-in {
  from {
    transform: translateY(4px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes bubble-float-in {
  from {
    transform: translateY(3px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes content-fade-in {
  from {
    transform: translateY(2px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes text-shine {
  from {
    background-position: 180% 0;
    opacity: 0.25;
  }
  50% {
    opacity: 0.85;
  }
  to {
    background-position: -80% 0;
    opacity: 0.25;
  }
}

@keyframes composer-float-in {
  from {
    transform: translateY(5px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (max-width: 900px) {
  .composer-toolbar {
    grid-template-columns: 1fr 1fr;
  }

  .setting-model {
    grid-column: 1 / -1;
  }
}

@media (max-width: 680px) {
  :root {
    --message-list-pad-top: 26px;
    --message-list-pad-x: 12px;
    --message-list-pad-bottom: 24px;
    --welcome-offset-top: 32px;
    --welcome-heading-size: 27px;
    --composer-side-pad: 10px;
    --composer-bottom-pad: 12px;
  }

  body {
    overflow: hidden;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 12px;
  }

  .topbar-status {
    width: 100%;
    justify-content: flex-start;
  }

  .status-pill {
    max-width: 100%;
  }

  #active-model-label {
    max-width: 100%;
  }

  .model-picker-panel {
    padding: 11px;
  }

  .start-select-control {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 10px;
  }

  .start-model-list {
    max-height: 212px;
  }

  .message-user .message-inner {
    width: min(100%, 92%);
  }

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

  .setting-control {
    width: 100%;
  }

  .setting-temperature input {
    flex: 1;
    width: auto;
  }

  .solution-text {
    padding: 3px 0 0;
  }
}

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