:root {
  --bg-primary: #f7f8fc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #ffffff;
  --ui-element: #eff1f7;
  --ui-element-hover: #e6e8f0;
  --border: #dde1ee;
  --text-primary: #1e2233;
  --text-secondary: #6b728e;
  --text-on-accent: #ffffff;
  --shadow: rgba(107, 114, 142, 0.08);
  --shadow-strong: rgba(107, 114, 142, 0.12);
  --accent-blue: #636ccb;
  --accent-blue-solid: #50589c;
  --accent-blue-hover: #3c467b;
  --accent-blue-subtle: #eaf0ff;
  --toast-success-bg: #28a745;
  --toast-success-fg: #ffffff;
  --toast-info-bg: #17a2b8;
  --toast-info-fg: #ffffff;
  --toast-warning-bg: #ffc107;
  --toast-warning-fg: #212529;
  --toast-error-bg: #dc3545;
  --toast-error-fg: #ffffff;
  --danger: #dc3545;
  --danger-hover: #b02a37;
  --code-bg: #f5f5f5;
  --code-header-bg: #eaeaea;
  --code-text: #333;
  --code-copy-btn-text: #6b728e;
  --code-copy-btn-hover-bg: #dde1ee;
  --sidebar-width: 26rem;
  --sidebar-collapsed-width: 0;
  --transition-duration: 300ms;
  --transition-timing: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-sidebar: transform var(--transition-duration) var(--transition-timing);
  --transition-content: margin-left var(--transition-duration) var(--transition-timing);
  --transition-smooth: all 200ms cubic-bezier(0.25, 0.8, 0.25, 1);
}
[data-theme='dark'] {
  --bg-primary: #131313;
  --bg-secondary: #1e1e1e;
  --bg-tertiary: #252525;
  --ui-element: #2a2a2a;
  --ui-element-hover: #333333;
  --border: #3a3a3a;
  --text-primary: #e8e8e8;
  --text-secondary: #9b9b9b;
  --text-on-accent: #ffffff;
  --shadow: rgba(0, 0, 0, 0.2);
  --shadow-strong: rgba(0, 0, 0, 0.25);
  --accent-blue: #7b83e0;
  --accent-blue-solid: #8f96e8;
  --accent-blue-hover: #aab0f0;
  --accent-blue-subtle: #2a2d4d;
  --toast-success-bg: #34c759;
  --toast-success-fg: #ffffff;
  --toast-info-bg: #007aff;
  --toast-info-fg: #ffffff;
  --toast-warning-bg: #ffc107;
  --toast-warning-fg: #212529;
  --toast-error-bg: #ff3b30;
  --toast-error-fg: #ffffff;
  --danger: #ff3b30;
  --danger-hover: #e03024;
  --code-bg: #282c34;
  --code-header-bg: #3a404d;
  --code-text: #abb2bf;
  --code-copy-btn-text: #9b9b9b;
  --code-copy-btn-hover-bg: #4b5263;
}
* {
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
*::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
*::-webkit-scrollbar-track {
  background: transparent;
}
*::-webkit-scrollbar-thumb {
  background-color: var(--border);
  border-radius: 10px;
  border: 2px solid transparent;
  background-clip: content-box;
}
*::-webkit-scrollbar-thumb:hover {
  background-color: var(--text-secondary);
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
  -webkit-tap-highlight-color: transparent;
}
*:focus-visible {
  outline: 0.2rem solid var(--accent-blue);
  outline-offset: 0.2rem;
}
html {
  font-size: 62.5%;
  scroll-behavior: smooth;
  color-scheme: light dark;
}
body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 1.5rem;
  line-height: 1.7;
  overflow: hidden;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  transition: background-color 0.3s ease, color 0.3s ease;
}
.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;
}
.ai-disclaimer {
  text-align: center;
  font-size: 1.1rem;
  color: var(--text-secondary);
  opacity: 0.8;
  user-select: none;
  margin-top: 1rem;
  transition: opacity 0.3s ease;
}
.ai-disclaimer:hover {
  opacity: 1;
}
.code-block-wrapper {
  position: relative;
  margin: 1.2em 0;
  border-radius: 1.2rem;
  overflow: hidden;
  background: var(--code-bg);
  box-shadow: 0 2px 6px var(--shadow);
  transition: all 0.3s ease;
}
.code-block-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--code-header-bg);
  padding: 0.6em 1.2em;
  font-family: 'Inter', sans-serif;
  font-size: 1.3rem;
  color: var(--code-text);
}
.code-block-lang {
  text-transform: uppercase;
  font-weight: 600;
  color: var(--text-secondary);
}
.code-copy-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: transparent;
  border: none;
  color: var(--code-copy-btn-text);
  cursor: pointer;
  padding: 0.4rem 0.8rem;
  border-radius: 0.6rem;
  transition: var(--transition-smooth);
  font-size: 1.2rem;
  font-weight: 500;
}
.code-copy-btn:hover {
  background-color: var(--code-copy-btn-hover-bg);
  color: var(--text-primary);
}
.code-copy-btn.copied {
  color: var(--accent-blue-solid);
}
pre {
  margin: 0;
  padding: 1.2em;
  font-size: 1.4rem;
  overflow-x: auto;
}
.body-no-scroll {
  overflow: hidden;
}
.header-btn {
  display: grid;
  place-items: center;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 2.4rem;
  color: var(--text-secondary);
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  transition: var(--transition-smooth);
}
.header-btn:hover {
  background-color: var(--ui-element);
  color: var(--text-primary);
}
.header-btn svg {
  display: block;
  width: 2.2rem;
  height: 2.2rem;
}
.mobile-nav-toggle {
  display: none;
}
.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  z-index: 1201;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transform: translateY(-100%);
  transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
  will-change: transform;
}
.mobile-nav-overlay.active {
  transform: translateY(0);
}
.mobile-nav-close {
  position: absolute;
  top: 3rem;
  right: 2.5rem;
  font-size: 4rem;
  font-weight: 300;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
}
.mobile-nav-menu {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3rem;
}
.mobile-nav-menu a {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 2.8rem;
  font-weight: 600;
  transition: var(--transition-smooth);
}
.mobile-nav-menu a:hover {
  color: var(--accent-blue-solid);
}
.app-container {
  display: flex;
  height: 100vh;
  height: 100dvh;
  margin: 0 auto;
  background: var(--bg-secondary);
  overflow: hidden;
  position: relative;
}
.sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  z-index: 1199;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}
.sidebar-overlay.active {
  opacity: 1;
  visibility: visible;
}
.sidebar {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  flex-shrink: 0;
  width: var(--sidebar-width);
  background-color: var(--bg-primary);
  border-right: 1px solid var(--border);
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  height: 100dvh;
  z-index: 1200;
  transform: translateX(-100%);
  transition: var(--transition-sidebar);
  will-change: transform;
}
.sidebar-main {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
  padding: 1.6rem;
  overflow: hidden;
  height: 100%;
}
.sidebar-footer {
  display: none;
}
.sidebar-button {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 1.6rem;
  width: 100%;
  padding: 1.2rem 1.6rem;
  border-radius: 0.8rem;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 1.4rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-smooth);
  white-space: nowrap;
  overflow: hidden;
}
.sidebar-button:hover {
  background: var(--ui-element);
}
.sidebar-button.new-chat-btn {
  background-color: var(--accent-blue-subtle);
  color: var(--accent-blue-solid);
  font-weight: 600;
}
.sidebar-button.new-chat-btn:hover {
  background-color: var(--accent-blue);
  color: var(--text-on-accent);
}
.sidebar-button svg {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
}
#sidebar-toggle-btn {
  display: flex;
}
.chat-area {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  height: 100%;
  width: 100%;
  min-width: 0;
  margin-left: 0;
  transition: var(--transition-content);
  position: relative;
}
.sidebar-header {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  flex-shrink: 0;
}
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
}
.history-nav {
  flex-grow: 1;
  overflow-y: auto;
}
.history-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  padding: 0 0.8rem;
  margin-top: 1.6rem;
  margin-bottom: 1rem;
  white-space: nowrap;
  transition: opacity 0.3s ease;
}
#history-list {
  list-style: none;
}
.history-item-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: 0.8rem;
  transition: background-color 0.2s ease;
}
.history-item-wrapper:hover {
  background-color: var(--ui-element);
}
.history-item {
  flex-grow: 1;
  padding: 1rem 1.2rem;
  font-size: 1.4rem;
  color: var(--text-primary);
  background-color: transparent;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: left;
  transition: opacity 0.3s ease;
}
.history-item.active {
  background-color: var(--accent-blue-subtle);
  color: var(--accent-blue-solid);
  font-weight: 500;
  border-radius: 0.8rem;
}
[data-theme='dark'] .history-item.active {
  color: var(--accent-blue-hover);
}
.history-item-delete-btn {
  flex-shrink: 0;
  width: 2.8rem;
  height: 2.8rem;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--text-secondary);
  opacity: 0.5;
  transition: var(--transition-smooth);
  display: grid;
  place-items: center;
}
.history-item-wrapper:hover .history-item-delete-btn {
  opacity: 1;
}
.history-item-delete-btn:hover {
  color: var(--danger);
  transform: scale(1.1);
}
.main-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  padding: 1rem 0;
  z-index: 900;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}
.header-container {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1.6rem;
  width: 100%;
  padding: 0 1.6rem;
}
#mobile-sidebar-toggle {
  grid-column: 1;
  justify-self: start;
}
.model-selector-trigger {
  grid-column: 2;
}
#mobile-nav-toggle {
  grid-column: 3;
  justify-self: end;
}
.model-selector-trigger {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.8rem 1.6rem;
  border: none;
  background: transparent;
  border-radius: 0.8rem;
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition-smooth);
}
.model-selector-trigger:hover {
  background-color: var(--ui-element);
}
.model-selector-trigger svg {
  transition: var(--transition-smooth);
}
.demo-zone {
  padding: 1.6rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-primary);
}
.demo-card {
  background: var(--bg-secondary);
  border-radius: 1.2rem;
  border: 1px solid var(--border);
  box-shadow: 0 4px 12px var(--shadow);
  max-width: 600px;
  margin: 0 auto;
}
.demo-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 1.6rem;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}
.demo-card-body {
  padding: 1.6rem;
  font-size: 1.4rem;
  color: var(--text-secondary);
}
.demo-card-body p {
  margin-bottom: 1.6rem;
}
.demo-triggers {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.demo-btn {
  padding: 0.8rem 1.2rem;
  border: 1px solid var(--border);
  background: var(--ui-element);
  color: var(--text-primary);
  border-radius: 0.6rem;
  cursor: pointer;
  font-size: 1.3rem;
  font-weight: 500;
  transition: var(--transition-smooth);
}
.demo-btn:hover {
  background: var(--ui-element-hover);
  border-color: var(--text-secondary);
}
#toast-success {
  background: var(--toast-success-bg);
  color: var(--toast-success-fg);
  border-color: var(--toast-success-bg);
}
#toast-info {
  background: var(--toast-info-bg);
  color: var(--toast-info-fg);
  border-color: var(--toast-info-bg);
}
#toast-warn {
  background: var(--toast-warning-bg);
  color: var(--toast-warning-fg);
  border-color: var(--toast-warning-bg);
}
#toast-error {
  background: var(--toast-error-bg);
  color: var(--toast-error-fg);
  border-color: var(--toast-error-bg);
}
.kebab-menu-container {
  position: relative;
}
.kebab-btn {
  display: grid;
  place-items: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  width: 3.6rem;
  height: 3.6rem;
  border-radius: 50%;
  transition: var(--transition-smooth);
}
.kebab-btn:hover {
  background-color: var(--ui-element);
  color: var(--text-primary);
}
.kebab-btn svg {
  width: 2rem;
  height: 2rem;
}
.kebab-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  z-index: 1000;
  background: var(--bg-tertiary);
  border-radius: 0.8rem;
  border: 1px solid var(--border);
  box-shadow: 0 8px 16px var(--shadow-strong);
  width: 20rem;
  padding: 0.6rem;
  opacity: 0;
  transform-origin: top right;
  transform: scale(0.95) translateY(-10px);
  pointer-events: none;
  transition: opacity 200ms ease, transform 200ms ease;
}
.kebab-dropdown.active {
  opacity: 1;
  transform: scale(1) translateY(0);
  pointer-events: auto;
}
.kebab-item {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  width: 100%;
  padding: 1rem 1.2rem;
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--text-primary);
  background: none;
  border: none;
  border-radius: 0.6rem;
  text-align: left;
  cursor: pointer;
  transition: var(--transition-smooth);
}
.kebab-item:hover,
.kebab-item:focus {
  background: var(--ui-element);
  color: var(--text-primary);
  outline: none;
}
.kebab-item svg {
  flex-shrink: 0;
  color: var(--text-secondary);
}
.kebab-item:hover svg,
.kebab-item:focus svg {
  color: var(--text-primary);
}
.kebab-item-danger {
  color: var(--danger);
}
.kebab-item-danger:hover,
.kebab-item-danger:focus {
  background: var(--danger);
  color: var(--text-on-accent);
}
.kebab-item-danger svg {
  color: var(--danger);
}
.kebab-item-danger:hover svg,
.kebab-item-danger:focus svg {
  color: var(--text-on-accent);
}
.kebab-divider {
  height: 1px;
  background: var(--border);
  margin: 0.6rem 0;
}
.chat-messages {
  display: flex;
  flex-direction: column;
  gap: 3.2rem;
  flex-grow: 1;
  overflow-y: auto;
  padding: 2.4rem 1.6rem;
  scroll-behavior: smooth;
}
.welcome-screen {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  margin: auto;
  padding: 2.4rem 1.6rem;
  width: 100%;
  max-width: 900px;
}
.welcome-greeting {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.6rem;
  margin-bottom: 3.2rem;
}
.welcome-logo {
  width: 6rem;
  height: 6rem;
  border-radius: 1.2rem;
  box-shadow: 0 0.4rem 1.6rem var(--shadow);
}
.welcome-title {
  font-size: clamp(2.4rem, 4vw, 2.8rem);
  font-weight: 600;
  color: var(--text-primary);
}
.suggestion-cards-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
  width: 100%;
}
.suggestion-card {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  text-align: left;
  padding: 1.4rem;
  border-radius: 1rem;
  background-color: var(--ui-element);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-smooth);
  overflow: hidden;
}
.suggestion-card:hover {
  background-color: var(--ui-element-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow);
  border-color: var(--border);
}
.suggestion-card-icon {
  flex-shrink: 0;
  width: 2.8rem;
  height: 2.8rem;
  border-radius: 50%;
  background: var(--bg-secondary);
  color: var(--accent-blue-solid);
  display: grid;
  place-items: center;
  box-shadow: 0 2px 4px var(--shadow);
}
.suggestion-card-icon svg {
  width: 1.6rem;
  height: 1.6rem;
}
.suggestion-card-content {
  min-width: 0;
}
.suggestion-card-title {
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.suggestion-card-prompt {
  font-size: 1.3rem;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}
#confirm-modal-title {
  white-space: normal;
  overflow-wrap: break-word;
  word-break: break-word;
  display: block;
  margin: 0.5rem 0;
  color: var(--text-primary);
}
.message-wrapper {
  display: flex;
  width: 100%;
  padding: 0;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}
.message-wrapper.model,
.message-wrapper.user {
  flex-direction: column;
  gap: 1.6rem;
}
.model-header {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}
.model-header-avatar {
  width: 3.2rem;
  height: 3.2rem;
  border-radius: 50%;
  flex-shrink: 0;
}
.model-header-name {
  font-weight: 600;
  font-size: 1.6rem;
  color: var(--text-primary);
}
.message-avatar {
  width: 3.2rem;
  height: 3.2rem;
  border-radius: 50%;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  background-color: var(--accent-blue-subtle);
  color: var(--accent-blue-solid);
}
.message-avatar svg {
  width: 2rem;
  height: 2rem;
}
.message-content {
  word-wrap: break-word;
  min-width: 0;
  max-width: 85ch;
}
.message-wrapper.model .message-content,
.message-wrapper.user .message-content {
  width: 100%;
}
.message-wrapper {
  display: flex;
  width: 100%;
  padding: 0;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}
.message-wrapper.model,
.message-wrapper.user {
  flex-direction: column;
  gap: 1.6rem;
}
.model-header {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}
.model-header-avatar {
  width: 3.2rem;
  height: 3.2rem;
  border-radius: 50%;
  flex-shrink: 0;
}
.model-header-name {
  font-weight: 600;
  font-size: 1.6rem;
  color: var(--text-primary);
}
.message-avatar {
  width: 3.2rem;
  height: 3.2rem;
  border-radius: 50%;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  background-color: var(--accent-blue-subtle);
  color: var(--accent-blue-solid);
}
.message-avatar svg {
  width: 2rem;
  height: 2rem;
}
.message-content {
  word-wrap: break-word;
  min-width: 0;
  max-width: 85ch;
}
.message-wrapper.model .message-content,
.message-wrapper.user .message-content {
  width: 100%;
}
.streaming-text {
  white-space: pre-wrap;
  word-wrap: break-word;
}
.message-content > *:first-child {
  margin-top: 0;
}
.message-content > * + * {
  margin-top: 1.6em;
}
.message-content p,
.message-content ul,
.message-content ol,
.message-content blockquote {
  margin-bottom: 0;
}
.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4 {
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 0.5em;
}
.message-content h1 {
  font-size: 2.4rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.6rem;
  margin-top: 2.2em;
}
.message-content h2 {
  font-size: 2rem;
  margin-top: 2.2em;
}
.message-content h3 {
  font-size: 1.6rem;
  margin-top: 2em;
}
.message-content ul,
.message-content ol {
  padding-left: 2.8rem;
}
.message-content li {
  margin-bottom: 1.2rem;
  padding-left: 0.8rem;
}
.message-content li > *:first-child {
  margin-top: 0;
}
.message-content li > *:last-child {
  margin-bottom: 0;
}
.message-content strong,
.message-content b {
  font-weight: 600;
}
.message-content a {
  color: var(--accent-blue-solid);
  text-decoration: none;
  font-weight: 500;
}
.message-content a:hover {
  text-decoration: underline;
}
.message-content blockquote {
  border-left: 3px solid var(--accent-blue);
  padding-left: 1.8rem;
  margin-left: 0;
  color: var(--text-secondary);
}
.message-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin-top: 2.5em;
}
.message-content .user-image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 1rem;
  margin-top: 1em;
}
.message-content img.user-image {
  max-width: 100%;
  border-radius: 0.8rem;
  display: block;
  object-fit: cover;
  aspect-ratio: 1 / 1;
}
.message-content code:not(pre > code) {
  background-color: var(--ui-element);
  padding: 0.3rem 0.6rem;
  border-radius: 0.4rem;
  font-size: 0.9em;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
}
.message-content pre {
  margin: 0;
  padding: 1.6rem;
  white-space: pre-wrap;
  word-break: break-all;
}
.message-content pre code.hljs {
  padding: 0;
  background: transparent;
  font-size: 1.4rem;
}
.message-content table {
  width: 100%;
  border-collapse: collapse;
}
.message-content th,
.message-content td {
  border: 1px solid var(--border);
  padding: 1rem 1.4rem;
  text-align: left;
}
.message-content th {
  background-color: var(--ui-element);
  font-weight: 600;
}
.message-content tr:nth-child(even) {
  background-color: var(--bg-primary);
}
mjx-container {
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 4px;
}
.blinking-cursor {
  display: inline-block;
  background-color: var(--accent-blue-solid);
  width: 0.9rem;
  height: 1.8rem;
  border-radius: 0.2rem;
  margin-left: 0.3rem;
  vertical-align: text-bottom;
  animation: cursor-blink 1.2s infinite;
}
@keyframes cursor-blink {
  0%,
  100% {
    opacity: 1;
    transform: scaleY(1);
  }
  50% {
    opacity: 0;
    transform: scaleY(0.9);
  }
}
.fade-out {
  opacity: 0;
  transition: opacity 0.4s ease-out;
}
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(1rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.staged-file-container,
.message-wrapper {
  animation: fadeIn 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.stop-generation-container {
  display: none;
  justify-content: center;
  padding: 1rem 0;
  flex-shrink: 0;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}
#stop-btn {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.8rem 1.6rem;
  border-radius: 1.6rem;
  border: 1px solid var(--border);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 1.3rem;
  font-weight: 500;
  transition: var(--transition-smooth);
}
#stop-btn:hover {
  background-color: var(--ui-element);
  border-color: var(--text-secondary);
}
.chat-input-area-wrapper {
  flex-shrink: 0;
  width: 100%;
  padding: 1.2rem 2.4rem;
  background: transparent;
}
.chat-input-area {
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}
.chat-input-box {
  flex-grow: 1;
  display: flex;
  align-items: flex-end;
  gap: 0.8rem;
  background-color: var(--ui-element);
  border: 1.5px solid var(--ui-element);
  border-radius: 1.6rem;
  padding: 1rem 1.2rem;
  transition: var(--transition-smooth);
}
.chat-input-box:focus-within {
  border-color: var(--accent-blue);
  background-color: var(--bg-secondary);
}
.chat-input-box-inner {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}
#chat-form {
  display: flex;
  flex-direction: column;
  width: 100%;
}
#prompt-input {
  flex-grow: 1;
  border: none;
  background: transparent;
  font-size: 1.5rem;
  resize: none;
  max-height: 25rem;
  line-height: 1.6;
  field-sizing: content;
  color: var(--text-primary);
  padding: 0.4rem 0;
}
#prompt-input:focus {
  outline: none;
}
#prompt-input::placeholder {
  color: var(--text-secondary);
}
.chat-input-toolbar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.8rem;
}
.input-button {
  display: grid;
  place-items: center;
  width: 3.6rem;
  height: 3.6rem;
  border-radius: 50%;
  border: none;
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
  transition: var(--transition-smooth);
  color: var(--text-secondary);
}
.input-button svg {
  width: 2rem;
  height: 2rem;
  transition: var(--transition-smooth);
}
.input-button:hover {
  background-color: var(--accent-blue-subtle);
  color: var(--accent-blue-solid);
}
.chat-input-box .send-button {
  background-color: var(--accent-blue-solid);
  color: var(--text-on-accent);
}
.chat-input-box .send-button svg {
  width: 2rem;
  height: 2rem;
  margin: 0;
}
.chat-input-box .send-button:hover {
  background-color: var(--accent-blue-hover);
  transform: scale(1.05);
  color: var(--text-on-accent);
}
.chat-input-box .send-button:active {
  background-color: var(--accent-blue-hover);
  transform: scale(0.95);
}
.chat-input-box .send-button.no-hover {
  background-color: var(--accent-blue-solid) !important;
  transform: none !important;
}
.staged-file-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem;
  width: 100%;
  margin-bottom: 0.8rem;
}
.staged-file-container.staged-file-container--grid {
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}
.staged-file-item {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1rem;
  border-radius: 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  min-width: 0;
  animation: file-item-fade-in 300ms ease;
}
@keyframes file-item-fade-in {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}
.staged-file-thumbnail {
  flex-shrink: 0;
  width: 4.8rem;
  height: 4.8rem;
  border-radius: 0.8rem;
  display: grid;
  place-items: center;
  background: var(--ui-element);
  color: var(--text-secondary);
  overflow: hidden;
}
.staged-file-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.staged-file-thumbnail svg {
  width: 2.4rem;
  height: 2.4rem;
}
.staged-file-details {
  flex-grow: 1;
  min-width: 0;
}
.staged-file-name {
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.staged-file-size {
  font-size: 1.2rem;
  color: var(--text-secondary);
}
.staged-file-remove-btn {
  flex-shrink: 0;
  width: 2.8rem;
  height: 2.8rem;
  border-radius: 50%;
  border: none;
  background: var(--ui-element);
  color: var(--text-secondary);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 2rem;
  font-weight: 500;
  transition: var(--transition-smooth);
}
.staged-file-remove-btn:hover {
  background: var(--danger);
  color: var(--text-on-accent);
}
.staged-file-dropzone-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 950;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
}
.staged-file-dropzone-overlay.active {
  opacity: 1;
  pointer-events: auto;
}
.staged-file-dropzone-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.6rem;
  padding: 2.4rem;
  background: var(--bg-secondary);
  border: 2px dashed var(--accent-blue);
  border-radius: 1.2rem;
  color: var(--text-primary);
  font-size: 1.6rem;
  font-weight: 500;
}
.staged-file-dropzone-content svg {
  color: var(--accent-blue);
}
.image-gallery-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.6rem;
  width: 100%;
}
.generated-image-wrapper {
  position: relative;
  width: 100%;
  padding-top: 100%;
  border-radius: 1.2rem;
  overflow: hidden;
  background-color: var(--ui-element);
  box-shadow: 0 4px 8px var(--shadow);
}
.generated-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.generated-image-wrapper:hover .generated-image {
  transform: scale(1.05);
}
.image-actions-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
  padding: 2.4rem 1.2rem 1.2rem;
  display: flex;
  justify-content: flex-end;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.generated-image-wrapper:hover .image-actions-overlay {
  opacity: 1;
}
.image-download-btn {
  display: grid;
  place-items: center;
  width: 3.6rem;
  height: 3.6rem;
  background-color: rgba(255, 255, 255, 0.9);
  color: #1e2233;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s ease, background-color 0.2s ease;
}
.image-download-btn:hover {
  transform: scale(1.1);
  background-color: #ffffff;
}
.image-loader-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.6rem;
  width: 100%;
}
.skeleton-loader {
  position: relative;
  width: 100%;
  padding-top: 100%;
  border-radius: 1.2rem;
  overflow: hidden;
  background-color: var(--ui-element);
}
.skeleton-loader::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--bg-secondary), transparent);
  animation: shimmer 1.5s infinite;
}
[data-theme='dark'] .skeleton-loader::after {
  background: linear-gradient(90deg, transparent, var(--ui-element-hover), transparent);
}
@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  z-index: 1250;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  display: grid;
  place-items: center;
}
.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}
.modal-content {
  background: var(--bg-tertiary);
  border-radius: 1.6rem;
  padding: 2.4rem;
  width: 90%;
  max-width: 600px;
  box-shadow: 0 8px 32px var(--shadow-strong);
  transform: scale(0.95);
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.modal-overlay.active .modal-content {
  transform: scale(1);
  opacity: 1;
}
.modal-content h3 {
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2rem;
  text-align: center;
}
.modal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}
.modal-grid .mode-button {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 1.2rem 1.6rem;
  border: 1px solid var(--border);
  border-radius: 1.2rem;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 1.4rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-smooth);
  text-align: left;
}
.modal-grid .mode-button strong {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}
.modal-grid .mode-button:hover {
  border-color: var(--accent-blue);
  background: var(--accent-blue-subtle);
}
.modal-grid .mode-button.active {
  border-color: var(--accent-blue-solid);
  background: var(--accent-blue-subtle);
  box-shadow: 0 0 0 2px var(--accent-blue-solid);
}
[data-theme='dark'] .modal-grid .mode-button.active {
  color: var(--accent-blue-hover);
}
.message-wrapper.user.message-collapsible.collapsed .message-content {
  max-height: 40rem;
  overflow: hidden;
  position: relative;
  -webkit-mask-image: linear-gradient(to bottom, black 85%, transparent 100%);
  mask-image: linear-gradient(to bottom, black 85%, transparent 100%);
}
.message-expand-btn {
  display: none;
  align-items: center;
  gap: 0.8rem;
  padding: 0.8rem 1.6rem;
  border-radius: 1.6rem;
  border: 1px solid var(--border);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 1.3rem;
  font-weight: 500;
  transition: var(--transition-smooth);
  margin: -1.6rem auto 1.6rem auto;
  max-width: 900px;
}
.message-expand-btn:hover {
  background-color: var(--ui-element);
  border-color: var(--text-secondary);
}
.message-collapsible.collapsed + .message-expand-btn {
  display: flex;
}
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 360px;
}
.toast {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.4rem;
  border-radius: 0.8rem;
  box-shadow: 0 4px 12px var(--shadow-strong);
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  animation: toast-fade-in 360ms var(--transition-timing);
  will-change: transform, opacity;
}
.toast.fade-out {
  animation: toast-fade-out 360ms var(--transition-timing) forwards;
}
.toast--success {
  background: var(--toast-success-bg);
  color: var(--toast-success-fg);
  border: none;
}
.toast--info {
  background: var(--toast-info-bg);
  color: var(--toast-info-fg);
  border: none;
}
.toast--warning {
  background: var(--toast-warning-bg);
  color: var(--toast-warning-fg);
  border: none;
}
.toast--error {
  background: var(--toast-error-bg);
  color: var(--toast-error-fg);
  border: none;
}
.toast-icon {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
}
.toast-icon svg {
  width: 100%;
  height: 100%;
}
.toast-content {
  flex-grow: 1;
  padding-top: 0.2rem;
  word-wrap: break-word;
  min-width: 0;
}
.toast-close {
  flex-shrink: 0;
  background: none;
  border: none;
  color: currentColor;
  opacity: 0.7;
  cursor: pointer;
  padding: 0;
  margin-left: 1rem;
  transition: opacity 200ms ease;
}
.toast-close:hover {
  opacity: 1;
}
.toast-close svg {
  width: 1.8rem;
  height: 1.8rem;
}
@keyframes toast-fade-in {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}
@keyframes toast-fade-out {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}
.confirm-modal-body {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.6;
}
.modal-btn-bar {
  display: flex;
  justify-content: flex-end;
  gap: 1.2rem;
  margin-top: 1.6rem;
}
.modal-btn {
  padding: 1rem 1.6rem;
  border: 1px solid var(--border);
  background: var(--ui-element);
  color: var(--text-primary);
  border-radius: 0.8rem;
  cursor: pointer;
  font-size: 1.4rem;
  font-weight: 500;
  transition: var(--transition-smooth);
}
.modal-btn:hover {
  background: var(--ui-element-hover);
  border-color: var(--text-secondary);
}
.modal-btn.danger {
  background: var(--danger);
  color: var(--text-on-accent);
  border-color: var(--danger);
}
.modal-btn.danger:hover {
  background: var(--danger-hover);
  border-color: var(--danger-hover);
}
.theme-icon {
  display: none;
}
[data-theme='light'] .icon-sun {
  display: block;
}
[data-theme='dark'] .icon-moon {
  display: block;
}
@media (max-width: 1024px) {
  .suggestion-cards-container {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .app-container {
    width: 100%;
    border-radius: 0;
    border: none;
    box-shadow: none;
  }
  .sidebar.active {
    transform: translateX(0);
    box-shadow: 0.4rem 0 2.4rem rgba(0, 0, 0, 0.1);
  }
  #mobile-sidebar-toggle {
    display: grid;
  }
  #mobile-nav-toggle {
    display: grid;
  }
  .chat-input-area-wrapper {
    padding: 1.2rem 1.6rem;
  }
  .suggestion-cards-container {
    grid-template-columns: 1fr;
  }
  .suggestion-card-icon {
    width: 2.4rem;
    height: 2.4rem;
  }
  .suggestion-card-icon svg {
    width: 1.4rem;
    height: 1.4rem;
  }
  .modal-grid {
    grid-template-columns: 1fr;
  }
  .chat-input-area-wrapper {
    padding: 1.2rem 1.6rem;
  }
  .chat-input-box {
    padding: 0.8rem 0.8rem 0.8rem 1.2rem;
    gap: 0.4rem;
  }
  .demo-zone {
    padding: 1.6rem 0.8rem;
  }
  .demo-triggers {
    gap: 0.8rem;
  }
  .demo-btn {
    font-size: 1.2rem;
    padding: 0.6rem 1rem;
  }
  .staged-file-container.staged-file-container--grid {
    grid-template-columns: 1fr;
  }
  .toast-container {
    top: 1rem;
    bottom: auto;
    left: 1rem;
    right: 1rem;
    max-width: none;
  }
  @keyframes toast-fade-in {
    from {
      opacity: 0;
      transform: translateY(-100%);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  @keyframes toast-fade-out {
    from {
      opacity: 1;
      transform: translateY(0);
    }
    to {
      opacity: 0;
      transform: translateY(-100%);
    }
  }
}
@media (min-width: 769px) {
  .sidebar-overlay {
    display: none !important;
  }
  .sidebar {
    transform: translateX(0);
  }
  .chat-area {
    margin-left: var(--sidebar-width);
  }
  .sidebar.active {
    transform: translateX(0);
  }
  .app-container.sidebar-collapsed .sidebar {
    transform: translateX(-100%);
  }
  .app-container.sidebar-collapsed .chat-area {
    margin-left: 0;
  }
  #mobile-sidebar-toggle {
    display: none;
  }
  .app-container.sidebar-collapsed #mobile-sidebar-toggle {
    display: grid;
  }
  #mobile-nav-toggle {
    display: grid;
  }
}