:root {
    --primary-color: #4a90e2;
    --primary-dark: #4178c0;
    --accent-color: #50e3c2;
    --background-color: #f9f9f9;
    --body-bg: #f0f2f5;
    --text-color: #333;
    --light-shadow: rgba(0, 0, 0, 0.1);
    --nav-width: 320px;
    --border-radius: 12px;
  }
  /* Global Styles */
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  body {
    font-family: 'Poppins', sans-serif;
    background: var(--body-bg);
    overflow: hidden;
    color: var(--text-color);
  }
  /* Hamburger Button */
  #hamburgerBtn {
    background: var(--primary-color);
    color: #fff;
    border: none;
    padding: 5px 10px;
    font-size: 1.5em;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.3s;
  }
  #hamburgerBtn:hover {
    background: var(--primary-dark);
  }
  .chat-header .chat-hamburger {
    margin-top: 0;
    margin-right: 10px;
  }
  /* Navigation Header (New placement for New Chat button) */
  .nav-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
  }
  /* App Container */
  .app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
    transition: all 0.3s ease;
  }
  /* Left Navigation Bar */
  .nav-bar {
    width: var(--nav-width);
    background: #fff;
    padding: 24px;
    box-shadow: 2px 0 16px var(--light-shadow);
    overflow-y: auto;
    transition: transform 0.3s ease, width 0.3s ease, padding 0.3s ease;
    transform: translateX(0);
    display: flex;
    flex-direction: column;
  }

  .nav-bar.hidden {
    transform: translateX(-100%);
    width: 0;
    padding: 0;
  }
  .nav-bar h3 {
    font-size: 1.5em;
    margin-bottom: 20px;
    color: var(--primary-color);
  }
  .nav-bar ul {
    list-style: none;
    flex: 1;
  }
  .nav-bar li {
    padding: 12px 16px;
    margin-bottom: 12px;
    background: var(--background-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background 0.3s;
    font-size: 1em;
  }
  .nav-bar li.active,
  .nav-bar li:hover {
    background: var(--primary-color);
    color: #fff;
  }
  .session-actions {
    display: flex;
  }
  .session-summary-btn,
  .session-settings-btn {
    background: rgba(74, 144, 226, 0.15);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, background 0.3s;
    color: inherit;
  }
  .session-summary-btn:hover,
  .session-settings-btn:hover {
    transform: scale(1.1);
    background: rgba(74, 144, 226, 0.25);
  }
  .nav-bar li button.remove-session {
    background: transparent;
    border: none;
    color: inherit;
    font-size: 1.2em;
    cursor: pointer;
  }
  .new-session-btn {
    padding: 2px 5px;
    background: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1.1em;
    transition: background 0.3s;
    border-radius: 6px;
  }
  .new-session-btn:hover {
    background: var(--primary-dark);
  }
  /* Toggle Layout Button at bottom of nav-bar */
  #toggleLayoutBtn {
    background: var(--primary-color);
    color: #fff;
    border: none;
    padding: 2px 5px;
    font-size: 1.1em;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.3s;
    margin-top: auto;
  }
  #toggleLayoutBtn:hover {
    background: var(--primary-dark);
  }
  /* Chat Wrapper */
  .chat-wrapper {
    flex: 1;
    background: #fff;
    margin: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 12px 40px var(--light-shadow);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    transition: all 0.3s ease;
  }
  /* Chat Header */
  .chat-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 40px 16px 20px;
    border-bottom: 1px solid #eee;
    background: #fff;
    transition: margin-left 0.3s ease;
  }
  /* Left portion of the chat header (hamburger + new chat if collapsed) */
  .header-left {
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .chat-title-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    justify-content: space-between;
  }
  .chat-header h2 {
    font-size: 1.5em;
    color: var(--primary-color);
    margin: 0;
    flex-grow: 1;
    white-space: nowrap;
  }
  .chat-header button {
    background: none;
    border: none;
    color: white;
    background-color: var(--primary-color);
    font-size: 1em;
    cursor: pointer;
    transition: color 0.3s;
  }
  .chat-header button:hover {
    color: var(--primary-dark);
  }
  #editTitleBtn {
    color: var(--primary-color);
    background: none;
  }
  /* Turn Label (now part of the header's flex layout) */
  #turnLabel {
    background: var(--accent-color);
    color: #fff;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 1em;
    white-space: nowrap;
  }
  /* Carousel Wrapper */
  .carousel-wrapper {
    position: relative;
    flex: 1;
    background: var(--background-color);
    transition: all 0.3s ease;
    overflow: hidden;
  }
  .carousel-wrapper.traditional-mode {
    overflow-y: auto;
  }
  /* Carousel */
  .carousel {
    display: flex;
    height: 100%;
    transition: transform 0.5s ease;
  }
  .carousel.traditional {
    flex-direction: column;
    height: auto;
    transform: none !important;
  }
  /* Card */
  .card {
    min-width: 100%;
    height: 100%;
    padding: 40px 70px 40px 70px;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    transition: all 0.3s ease;
  }
  .carousel.traditional .card {
    margin-bottom: 20px;
    padding: 20px 40px;
    height: auto;
  }
  .conversation {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }
  /* Message Bubbles (Order: User then AI; rendered as Markdown) */
  .message {
    padding: 14px 20px;
    border-radius: 24px;
    font-size: 1em;
    line-height: 1.6;
    max-width: 90%;
    position: relative;
    box-shadow: 0 3px 10px var(--light-shadow);
    transition: background 0.3s, transform 0.3s;
  }
  .user {
    background: #e9f1ff;
    border: 1px solid #cbdffb;
    align-self: flex-end;
  }
  .ai {
    background: #fff4e6;
    border: 1px solid #ffe0b2;
    align-self: flex-start;
  }
  .message-text {
    display: block;
    max-height: 80px;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .message.expanded .message-text {
    max-height: none;
  }
  /* Ensure full AI message text is visible */
  .ai .message-text {
    max-height: none !important;
    overflow: visible !important;
  }
  .ai .ai-status {
    margin-top: 8px;
    padding-top: 4px;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    font-size: 0.7em;
    color: #666;
    text-align: right;
  }
  .toggle-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    font-size: 0.85em;
    margin-top: 6px;
    padding: 0;
  }
  .vertical-file-list {
    margin-bottom: 10px;
    display: flex;
    flex-direction: column;
    gap: 5px;
  }
  .file-item-vertical {
    background: #0500e624;
    padding: 6px 10px;
    border-radius: var(--border-radius);
    font-size: 0.5em;
    font-style: italic;
  }
  /* Navigation Buttons */
  .nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0);
    /* backdrop-filter: blur(4px); */
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: transform 0.3s, background 0.3s;
  }
  .nav:hover {
    transform: translateY(-50%) scale(1.1);
    background: rgba(255, 255, 255, 0.8);
  }
  .nav:disabled {
    opacity: 0.5;
    cursor: default;
  }
  #prevBtn {
    left: 1px;
  }
  #nextBtn {
    right: 1px;
  }
  .carousel.traditional ~ .nav {
    display: none;
  }
  /* Input Section */
  .input-container {
    padding: 20px;
    background: #fafafa;
    border-top: 1px solid #eee;
    display: flex;
    flex-direction: column;
  }
  .file-attachments {
    display: flex;
    flex-direction: row;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 12px;
    scrollbar-width: thin;
  }
  .file-attachments::-webkit-scrollbar {
    height: 6px;
  }
  .file-attachments::-webkit-scrollbar-track {
    background: #f1f1f1;
  }
  .file-attachments::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 3px;
  }
  .file-attachments::-webkit-scrollbar-thumb:hover {
    background: #999;
  }
  .file-item {
    background: #f0f0f0;
    padding: 8px 12px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9em;
  }
  .file-item button {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    font-size: 1em;
  }
  .input-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 24px;
    padding: 6px 12px;
  }
  .attach-button {
    background: none;
    border: none;
    font-size: 1.4em;
    cursor: pointer;
    color: #999;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    transition: background 0.3s;
  }
  .attach-button:hover {
    background: #f0f0f0;
  }
  #fileInput {
    display: none;
  }
  #chatInput {
    flex: 1;
    border: none;
    outline: none;
    resize: none;
    overflow: scroll;
    font-size: 1em;
    height: 36px;
    /* line-height: 36px; */
    margin: 0;
    padding: 0 8px;
    padding: 10px;
    max-height: 100px;
  }
  #chatInput::placeholder {
    color: #999;
  }
  #sendBtn svg {
    width: 16px !important;
    height: 16px !important;
  }
  #sendBtn {
    background: none;
    border: none;
    cursor: pointer;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    transition: background 0.3s;
  }
  #sendBtn:hover {
    background: #f0f0f0;
  }

/* Redesigned Summary Overlay with Max Height */
#summaryOverlay {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) translateY(100%);
  width: 80%;
  /* max-width: 600px;  Wider than settings panel */
  min-height: 30vh;  /* Limit to half the viewport height */
  max-height: 60vh;  /* Limit to half the viewport height */
  background: linear-gradient(135deg, #ffffff, #f7f7f7);
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
  z-index: 20;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  /* padding-bottom: 100px; */
}

#summaryOverlay.active {
  transform: translateX(-50%) translateY(0);
}

.summary-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: linear-gradient(135deg, #4a90e2, #4178c0);
  color: #fff;
  font-size: 1.5em;
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.summary-header span {
  font-weight: 500;
}

.summary-header-buttons {
  display: flex;
  gap: 12px;
}

.download-summary {
  background: #fff;
  color: #4a90e2;
  border: 1px solid #4a90e2;
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
  transition: background 0.3s, color 0.3s;
}

.download-summary:hover {
  background: #4a90e2;
  color: #fff;
}

.close-summary {
  background: none;
  border: none;
  color: #fff;
  font-size: 1.8em;
  cursor: pointer;
  line-height: 1;
}

.summary-content {
  padding-top: 20px;
  padding-bottom: 20px;
  padding-left: 50px;
  padding-right: 50px;
  overflow-y: auto; /* Scrollbar appears when content exceeds available height */
  flex: 1;
  font-size: 1em;
  color: #333;
  background: #fff;
}

/* Redesigned Settings Overlay */
#settingsOverlay {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) translateY(100%);
  width: 90%;
  max-width: 500px;
  background: linear-gradient(135deg, #ffffff, #f7f7f7);
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
  z-index: 20;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding-bottom: 50px;
}

#settingsOverlay.active {
  transform: translateX(-50%) translateY(0);
}

.settings-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: linear-gradient(135deg, #4a90e2, #4178c0);
  color: #fff;
  font-size: 1.5em;
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.settings-header span {
  font-weight: 500;
}

.close-settings {
  background: none;
  border: none;
  color: #fff;
  font-size: 1.8em;
  cursor: pointer;
  line-height: 1;
}

.settings-content {
  padding: 20px;
  flex: 1;
  overflow-y: auto;
  font-size: 1em;
  color: #333;
  background: #fff;
}

.settings-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 20px;
}

.settings-group label {
  margin-bottom: 8px;
  font-weight: 500;
}

.settings-group input[type="range"],
.settings-group input[type="number"],
.settings-group select {
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 8px;
  outline: none;
  width: 100%;
  font-size: 1em;
  background: #fefefe;
  transition: border 0.3s;
}

.settings-group input[type="range"]:focus,
.settings-group input[type="number"]:focus,
.settings-group select:focus {
  border-color: #4a90e2;
}

.save-settings {
  background: linear-gradient(135deg, #4a90e2, #4178c0);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 12px;
  width: 100%;
  font-size: 1em;
  cursor: pointer;
  transition: background 0.3s;
}

.save-settings:hover {
  background: linear-gradient(135deg, #4178c0, #4a90e2);
}

  @media (max-width: 600px) {
    .nav-bar {
      display: none;
    }
    .chat-wrapper {
      margin: 0;
    }
    .message {
      font-size: 0.95em;
      max-width: 80%;
    }
    .nav {
      width: 40px;
      height: 40px;
      font-size: 1.5em;
    }
    .card {
      padding: 80px 20px 20px 20px;
    }
    .input-container {
      padding: 15px;
    }
    .input-row {
      flex-direction: row;
    }
    .input-container button {
      width: auto;
    }
    #summaryOverlay,
    #settingsOverlay {
      width: 80%;
    }
  }
  
.svg-icon {
    width: 32px; /* Adjust as needed */
    height: 32px; /* Adjust as needed */
    filter: invert(100%) brightness(300%); 
}

.svg-icon-non-white {
    width: 24px; /* Adjust as needed */
    height: 24px; /* Adjust as needed */
    /* filter: invert(100%) brightness(300%);      */
}

.button-row {
    display: flex;
    justify-content: center;
    gap: 10px; /* Optional: adjust spacing between buttons */
    margin-bottom: 10px; /* Space between buttons and the rest of the input area */
}
  
.button-row button {
    padding: 8px 16px;
    background: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background 0.3s;
}

.button-row button:hover {
    background: var(--primary-dark);
}

#customBtn2 {
    padding-top: 4px;
    padding-bottom: 4px;
    padding-left: 12px;
    padding-right: 12px;
    font-size: 0.98em;
}

#customBtn2 img {
    width: 24px;
    height: 24px;
}

#customBtn3 {
  padding-top: 4px;
  padding-bottom: 4px;
  padding-left: 12px;
  padding-right: 12px;
  font-size: 0.98em;
}

#customBtn3 img {
  width: 24px;
  height: 24px;
}

/* Markdown */
.markdown-body {
  font-size: 1em;
  line-height: 1.5;
  white-space: normal; /* Ensure paragraphs and lists break onto new lines */
}

.markdown-body p {
  margin: 0.75em 0; /* Add vertical space between paragraphs */
}

.markdown-body ul,
.markdown-body ol {
  margin: 0.75em 0;
  padding-left: 1.5em; /* Indent bullets/numbers */
}

.markdown-body li {
  margin: 0.3em 0;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
  margin-top: 1em;
  margin-bottom: 0.5em;
  font-weight: bold;
}

/* Keep custom layout/styling but let hljs control colors */
.markdown-body pre {
  overflow-x: auto;
  max-width: 100%;
  white-space: pre;
  -webkit-overflow-scrolling: touch;
  padding: 10px;
  border-radius: 6px;
  /* Remove background-color and color so hljs can apply its own */
}

.markdown-body pre code.hljs {
  /* Customize only specific properties */
  padding: 10px;
  border-radius: 6px;
  /* Let the theme dictate the background and text colors */
}

.blinking-cursor {
  display: inline-block;
  width: 10px;
  height: 1em;
  background-color: currentColor;
  margin-left: 2px;
  animation: blink 1s steps(2, start) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
  100% { opacity: 1; }
}

.markdown-body pre {
  overflow-x: auto;
  max-width: 100%;
  white-space: pre;
  -webkit-overflow-scrolling: touch;
  padding: 10px;
  border-radius: 6px;
  /* Let the highlight.js theme control the background and colors */
  position: relative; /* Ensure the copy button is positioned correctly */
}

.copy-button {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.4);
  color: #fff;
  border: none;
  padding: 4px 8px;
  font-size: 0.75rem;
  border-radius: 4px;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.3s;
}

.copy-button:hover {
  opacity: 1;
}

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.8);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.5s ease, visibility 0.5s ease;
  z-index: 1000;
}

.loading-overlay.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.loading-animation {
  position: relative;
  width: 80px;
  height: 80px;
  margin-bottom: 20px;
}

.loading-animation .ripple {
  position: absolute;
  border: 4px solid #4a90e2; /* Adjust the color to match your theme */
  opacity: 1;
  border-radius: 50%;
  animation: ripple 1.5s cubic-bezier(0.66, 0, 0, 1) infinite;
}

.loading-animation .ripple:nth-child(2) {
  animation-delay: -0.75s;
}

@keyframes ripple {
  0% {
    top: 36px;
    left: 36px;
    width: 0;
    height: 0;
    opacity: 1;
  }
  100% {
    top: 0;
    left: 0;
    width: 72px;
    height: 72px;
    opacity: 0;
  }
}

/* Container for the toggle switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 34px;
  margin-left: 10px;
}

/* Hide the default checkbox */
.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

/* The slider (background) */
.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: background-color 0.4s, box-shadow 0.4s;
  border-radius: 34px;
  box-shadow: inset 0 0 5px rgba(0,0,0,0.3);
}

/* The knob */
.toggle-slider:before {
  position: absolute;
  content: "";
  height: 26px;
  width: 26px;
  background-color: #fff;
  transition: transform 0.4s, box-shadow 0.4s;
  border-radius: 50%;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* When the checkbox is checked */
.toggle-switch input:checked + .toggle-slider {
  background-color: #4a90e2;
  box-shadow: inset 0 0 5px rgba(0,0,0,0.2);
}

.toggle-switch input:checked + .toggle-slider:before {
  transform: translateX(26px);
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

/* Optional: styling for the label text */
.toggle-label {
  font-size: 1em;
  vertical-align: middle;
  color: #333;
}

.ai-meta {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 0.8em;
  color: #666;
}

.toggle-btn-summarize {
  padding: 8px 16px;
  background-color: #ccc !important;  /* Dim color when off */
  color: #fff;
  border: none;
  border-radius: 20px;
  font-size: 0.9em;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.toggle-btn-summarize.active {
  background-color: #4a90e2 !important;  /* Vivid color when active */
}

/* Model Presets */
/* Container for presets */
#presetContainer {
  flex-shrink: 0;
  padding: 10px 24px;
  border-top: 1px solid #ddd;
  background-color: #fff;
}

/* Improved preset select styling */
#presetContainer {
  position: absolute;
  bottom: 20px; /* same as nav-bar padding */
  left: 20px;
  right: 20px;
  background: #fff;
  padding: 10px;
  border-top: 1px solid #ddd;
}

/* Enhanced preset select styling */
.preset-header {
  text-align: center;
  margin-bottom: 10px;
}


.preset-select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  width: 100%;
  padding: 12px 16px;
  margin-bottom: 10px;
  font-size: 1em;
  border: 1px solid #ccc;
  border-radius: 8px;
  background-color: #fafafa;
  background-image: url('data:image/svg+xml;utf8,<svg fill="gray" height="24" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M7 10l5 5 5-5z"/></svg>');
  background-repeat: no-repeat;
  background-position: right 12px center;
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
}

.preset-select.active {
  background-color: #4a90e2;
  color: #fff;
  border-color: #4a90e2;
  box-shadow: 0 0 8px rgba(74, 144, 226, 0.3);
  outline: none;
}

#sessionList {
  overflow-y: auto;
  padding-bottom: 150px; /* Adjust this value as needed */
}