body {
  margin: 0;
  font-family: "Inter", sans-serif;
  background-color: var(--bg);
  color: rgba(var(--cb));
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10;
  pointer-events: none;
}

.messages-container {
  flex-grow: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 20px 0 80px 0;
  width: 100%;
  max-width: 650px;
  margin: 0 auto;
  box-sizing: border-box;
  transition: max-height 0.3s ease-out;
  padding-bottom: 210px;
}

#scroll-to-bottom-btn {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-300px);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(var(--cb), 0.08);
  border: 1px solid rgba(var(--cb), 0.1);
  color: rgba(var(--cb));
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, background-color 0.2s ease;
  z-index: 15;
  backdrop-filter: blur(8px);
}

#scroll-to-bottom-btn.show {
  opacity: 1;
  pointer-events: auto;
}

#scroll-to-bottom-btn:hover {
  background-color: rgba(var(--cb), 0.18);
}

#start-screen {
  margin-top: 30vh;
  padding: 0 12px;
  text-align: center;
  transition: opacity 0.3s ease;
}

#start-screen p {
  font-size: 1.2em;
  margin-top: 5px;
  color: rgba(var(--cb), 0.7);
  line-height: 1;
}

.gone {
  display: none !important;
}

.message {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 15px;
  padding: 0 12px;
}

.message-content {
  padding: 10px 14px;
  border-radius: 18px;
  max-width: 75%;
  line-height: 1.5;
  font-size: 15px;
  overflow-wrap: break-word;
  word-break: break-word;
}

.user-message .message-content {
  background-color: rgba(var(--cb), 0.1);
  border-bottom-right-radius: 18px;
  opacity: 0;
  transition: opacity 0.25s ease-out;
}

.user-message .message-content.show {
  opacity: 1;
}

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

.ai-message .message-content {
  background-color: transparent;
  max-width: 100%;
  width: 100%;
  padding: 0;
}

.ai-block {
  opacity: 1;
  transition: none;
}

.message-content > * + * {
  margin-top: 16px;
}

.message-content h1 {
  font-size: 1.8em;
  font-weight: 700;
  color: rgba(var(--cb));
  border-bottom: 1px solid rgba(var(--cb), 0.1);
  padding-bottom: 8px;
  margin-bottom: 16px;
}

.message-content h2 {
  font-size: 1.5em;
  font-weight: 600;
  color: rgba(var(--cb));
  margin-top: 24px;
}

.message-content h3 {
  font-size: 1.3em;
  font-weight: 600;
  color: rgba(var(--cb), 0.85);
}

.message-content p {
  line-height: 1.6;
  color: rgba(var(--cb), 0.9);
  margin: 0;
}

.message-content ul,
.message-content ol {
  padding-left: 25px;
  margin: 10px 0;
}

.message-content li {
  margin-bottom: 8px;
  line-height: 1.5;
}

.message-content blockquote {
  margin: 20px 0;
  padding: 15px 25px;
  background-color: rgba(var(--cb), 0.03);
  border-left: 4px solid #8ab4f8;
  border-radius: 0 12px 12px 0;
  color: rgba(var(--cb), 0.7);
  font-style: italic;
}

.message-content hr {
  border: none;
  height: 1px;
  background-color: rgba(var(--cb), 0.1);
  margin: 30px 0;
}

.message-content code:not(pre code) {
  background-color: rgba(var(--cb), 0.15);
  color: #e1d5a1;
  padding: 3px 6px;
  border-radius: 6px;
  font-family: "Roboto Mono", monospace;
  font-size: 0.9em;
}

.message-content a {
  color: #8ab4f8;
  text-decoration: none;
  word-break: break-all;
  transition: color 0.2s ease, border-bottom 0.2s ease;
  border-bottom: 1px solid transparent;
}

.message-content a:hover {
  color: #aecbff;
  border-bottom: 1px solid #aecbff;
}

.message-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 0.95em;
  border: 1px solid rgba(var(--cb), 0.1);
  border-radius: 8px;
  overflow: hidden;
}

.message-content th {
  background-color: rgba(var(--cb), 0.07);
  padding: 12px 15px;
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid rgba(var(--cb), 0.1);
}

.message-content td {
  padding: 10px 15px;
  border-bottom: 1px solid rgba(var(--cb), 0.05);
}

.code-block-pre,
.code-block-pre code,
.code-block-pre span,
.message-content code {
  font-family: "Roboto Mono", "Courier New", monospace !important;
  direction: ltr;
  unicode-bidi: bidi-override;
}
.code-block-container {
  background-color: rgba(var(--cb), 0.08);
  border: 1px solid rgba(var(--cb), 0.1);
  border-radius: 12px;
  margin: 20px 0;
  overflow: clip;
  opacity: 1;
}
.code-block-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: rgba(var(--cb), 0.1);
  backdrop-filter: blur(25px);
  padding: 8px 16px;
  border-bottom: 1px solid rgba(var(--cb), 0.05);
  position: sticky;
  top: 0;
  z-index: 10;
}

.code-block-language {
  color: rgba(var(--cb), 0.5);
  font-size: 12px;
  font-family: "Roboto Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.code-block-copy-button {
  background: transparent;
  border: none;
  color: rgba(var(--cb), 0.6);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 13px;
  transition: all 0.2s ease;
}

.code-block-copy-button:hover {
  background-color: rgba(var(--cb), 0.1);
  color: rgba(var(--cb));
}

.code-block-pre {
  margin: 0 !important;
  padding: 16px !important;
  background-color: transparent !important;
  overflow-x: auto;
}

.code-block-pre code {
  font-family: "Roboto Mono", monospace !important;
  font-size: 14px;
  line-height: 1.5;
  background: transparent !important;
  color: rgba(var(--cb));
  white-space: pre;
}

.katex-display {
  margin: 20px 0;
  padding: 15px;
  background-color: rgba(var(--cb), 0.08);
  border-radius: 12px;
  overflow-x: auto;
  overflow-y: hidden;
}

.katex {
  font-size: 1.1em;
  color: rgba(var(--cb));
}

.message-content img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  margin: 15px 0;
  border: 1px solid rgba(var(--cb), 0.1);
}

.typing-indicator {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 10px 14px;
  margin: -15px 12px 10px 12px;
  opacity: 0;
  transition: opacity 0.15s ease-out;
}

.typing-indicator.show {
  opacity: 1;
}

.typing-indicator .message-content {
  display: flex;
  align-items: center;
  padding: 0;
  gap: 10px;
}

.typing-spinner {
  font-size: 20px;
  line-height: 1;
  color: rgba(var(--cb), 0.7);
  animation: spin 1.5s linear infinite;
}

.typing-text {
  color: rgba(var(--cb), 0.7);
  font-size: 14px;
  margin-top: 0px;
}

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

.message-actions-container {
  display: flex;
  justify-content: flex-start;
  padding: 0 8px;
  margin-top: 8px;
  margin-bottom: 15px;
  max-width: 650px;
  margin-right: auto;
  width: 100%;
}

.message-actions {
  display: flex;
  gap: 5px;
}

.action-button {
  width: 30px;
  height: 30px;
  background: transparent;
  border: none;
  outline: none;
  cursor: pointer;
  color: rgba(var(--cb), 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-size: 18px;
  opacity: 0;
}

.action-button:hover {
  color: rgba(var(--cb), 0.8);
  background-color: rgba(var(--cb), 0.1);
}

.action-button[data-action="retry"]:not(.can-retry) {
  opacity: 0 !important;
  pointer-events: none;
}

.input-bar-container {
  position: fixed;
  bottom: 10px;
  left: 0;
  right: 0;
  padding: 0 12px;
  display: flex;
  justify-content: center;
  z-index: 20;
  box-shadow: 0px 0px 12px 16px var(--bg);
  background: var(--bg);
}

.input-bar-content {
  display: flex;
  align-items: center;
  pointer-events: none;
  margin: auto;
  transform: scale(1.1);
  gap: 8px;
}

.input-bar,
.fixed-model-button {
  display: flex;
  align-items: center;
  height: 48px;
  background-color: var(--fourth-bg);
  border-radius: 14px;
  border: 1.5px solid rgba(var(--cb), 0.08);
  pointer-events: auto;
  flex-shrink: 0;
  transition: background-color 0.15s ease;
  box-sizing: border-box;
}

.input-bar {
  width: 400px;
  transition: 0.25s ease;
  margin: 0;
  position: relative;
  padding: 0 6px 0 0;
  padding-left: 6px;
}

.input-bar:focus-within {
  background-color: rgba(var(--cb), 0.18);
  width: 420px;
}

.send-button-inline {
  width: 36px;
  height: 36px;
  background: transparent;
  border: none;
  color: rgba(var(--cb), 0.5);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  pointer-events: auto;
  margin-right: 5px;
}

.send-button-inline:hover {
  color: rgba(var(--cb), 0.9);
}

.send-button-inline.disabled {
  opacity: 0.3;
  cursor: not-allowed;
  pointer-events: none;
}

.send-button-inline i {
  font-size: 22px;
}

.fixed-model-button {
  width: 48px;
  padding: 0;
  justify-content: center;
  cursor: pointer;
  outline: none;
}

.fixed-model-button:hover {
  background-color: var(--button-hover);
}

.fixed-model-button i {
  color: rgba(var(--cb), 0.8);
  font-size: 24px;
}

.input-bar i:first-child {
  color: rgba(var(--cb), 0.5);
  font-size: 24px;
  margin-left: 12px;
  transition: color 0.2s ease;
}

.input-bar:focus-within i:first-child {
  color: rgba(var(--cb), 0.8);
}

.input-bar input {
  flex: 1;
  height: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: rgba(var(--cb));
  font-size: 16px;
  padding-left: 8px;
}

.input-bar input::placeholder {
  color: rgba(var(--cb), 0.45);
}

.dropdown-wrapper {
  position: relative;
  display: flex;
}

.dropdown-wrapper.open .fixed-model-button i {
  color: rgba(var(--cb), 1);
}

.dropdown-options {
  position: absolute;
  top: auto;
  bottom: 100%;
  left: 0;
  width: 220px;
  margin-bottom: 8px;
  background-color: var(--fourth-bg);
  border-radius: 12px;
  border: 1.5px solid rgba(var(--cb), 0.08);
  padding: 4px;
  box-sizing: border-box;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: 0.25s ease;
  z-index: 23;
  pointer-events: auto;
  /*box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);*/
}

.dropdown-wrapper.open .dropdown-options {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-options.right-aligned {
  left: auto;
  right: 0;
}

.dropdown-options .option {
  padding: 12px;
  font-size: 16px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  color: rgba(var(--cb));
  transition: 0.25s ease;
}

.dropdown-options .option:hover {
  background-color: rgba(var(--cb), 0.08);
}

.dropdown-options .option:hover i {
  color: rgba(var(--cb), 0.9);
}

.dropdown-options .option.selected {
  background-color: rgba(var(--cb), 0.1);
}

.dropdown-options .option.disabled {
  opacity: 0.5;
  pointer-events: none;
  cursor: not-allowed;
}

.model-divider {
  height: 1px;
  background-color: rgba(var(--cb), 0.08);
  margin: 4px 10px;
}

.option i {
  color: rgba(var(--cb), 0.5);
  margin-right: 8px;
  font-size: 18px;
  transition: 0.2s ease;
}

.personality-panel {
  width: 250px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.personality-header {
  font-size: 12px;
  font-weight: 600;
  color: rgba(var(--cb), 0.5);
  text-transform: uppercase;
  letter-spacing: 0.7px;
}

#personality-textarea {
  width: 100%;
  height: 100px;
  background: rgba(var(--cb), 0.05);
  border: 1px solid rgba(var(--cb), 0.1);
  border-radius: 8px;
  color: rgba(var(--cb));
  padding: 8px;
  font-family: inherit;
  font-size: 14px;
  resize: none;
  outline: none;
  box-sizing: border-box;
  transition: all 0.2s ease;
}

#personality-textarea:focus {
  border-color: rgba(var(--cb), 0.3);
  background: rgba(var(--cb), 0.08);
}

.personality-footer {
  display: flex;
  justify-content: flex-end;
}

.save-btn {
  background: rgba(var(--cb), 0.1);
  border: 1px solid rgba(var(--cb), 0.15);
  color: rgba(var(--cb), 0.9);
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  transition: all 0.2s ease;
  outline: none;
}

.save-btn:hover {
  background: rgba(var(--cb), 0.2);
  border-color: rgba(var(--cb), 0.4);
}

.save-btn:active {
  transform: translateY(1px);
}

.save-btn.success {
  background: rgba(var(--cb), 0.15) !important;
  border-color: var(--primary) !important;
  color: var(--primary) !important;
}

#save-status {
  font-size: 13px;
  color: var(--primary);
  opacity: 0;
  transition: opacity 0.3s ease;
  font-style: italic;
}

@media (max-width: 650px) {
  .messages-container {
    padding-bottom: 118px;
    max-width: 100%;
  }
  #scroll-to-bottom-btn {
    bottom: 70px;
    left: 12px;
    transform: none;
    right: auto;
  }
  .input-bar-container {
    bottom: 70px;
    left: 0;
    right: 0;
    padding: 0 12px;
  }
  .input-bar-content {
    width: 100%;
    max-width: none;
    transform: scale(1);
    justify-content: space-between;
    margin: 0;
  }
  .input-bar {
    flex-grow: 1;
    width: auto;
    margin: 0;
  }
  .input-bar:focus-within {
    width: auto;
    background-color: var(--fourth-bg);
  }
}