.citation-link {
    cursor: pointer;
    text-decoration: none;
    color: var(--accent-color, #4da2ff);
    font-size: 0.75em;
    vertical-align: super;
}

/* Chips row container */
.citation-bar {
    margin-top: .5rem;
    border-top: 1px solid var(--citation-bar-border-color);
    padding-top: .5rem;
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
}

/* Individual chip */
.citation-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: var(--chip-bg);
    border-radius: 6px;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    color: var(--chip-text);
    text-decoration: none;
    transition: background 0.2s ease;
}
  
.citation-chip:hover {
    background: var(--chip-hover-bg);
}
  
.chip-icon {
    width: 20px;
    height: 20px;
    border-radius: 3px;
    flex-shrink: 0;
}

.tippy-box[data-theme~='citation-tip'] {
    background-color: var(--tooltip-bg);
    color: var(--tooltip-text);
    border: 1px solid var(--tooltip-border);
    box-shadow: var(--tooltip-shadow);
    border-radius: 6px;
    font-size: 0.75rem;
    padding: 0.5rem 0.75rem;
    max-width: 320px;
    line-height: 1.4;
  }
  
  .tippy-box[data-theme~='citation-tip'] > .tippy-arrow {
    color: var(--tooltip-arrow);
  }
/* -------------------------------------- */

/* Define theme variables */
:root {
    --background-color: #121212;
    --text-color: #e0e0e0;
    --header-text-color: #f0f0f0;
    --subheader-text-color: #aaa;
    --card-background: #1d1f24;
    --button-background: #2196f3;
    --button-hover: #1976d2;
    --link-color: #64b5f6;
    --input-text-color: #e0e0e0;
    --border-color: #444;
    --tweet-card-background: #1c1c1c;
    --tweet-card-border: #2a2a2a;
    --tweet-author-color: #90caf9;
    --tweet-date-color: #888;
    --tweet-text-color: #eee;
    --tweet-footer-color: #999;
    --assistant-message-background: #1e1e1e;
    --label-color: #bbbbbb;
    --assistant-message-border: #2c2c2c;
    --assistant-message-text-color: #eee;
    --chip-bg: rgba(255, 255, 255, 0.06);
    --chip-hover-bg: rgba(255, 255, 255, 0.15);
    --chip-text: #e0e0e0;
    --citation-bar-border-color: rgba(255,255,255,0.1);
    --tooltip-bg: #ffffff;
    --tooltip-text: #1a1a1a;
    --tooltip-border: #cccccc;
    --tooltip-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --tooltip-arrow: #ffffff;

  }
  
  :root[data-theme='light'] {
    --background-color: #f2f2f2;
    --text-color: #000000;
    --header-text-color: #000000;
    --subheader-text-color: #555;
    --card-background: #f9f9f9;
    --button-background: #007bff;
    --button-hover: #0056b3;
    --link-color: #007bff;
    --input-background: #ffffff;
    --input-text-color: #000000;
    --border-color: #ccc;
    --tweet-card-background: #f9f9f9;
    --tweet-card-border: #ddd;
    --tweet-author-color: #007bff;
    --tweet-date-color: #555;
    --tweet-text-color: #333;
    --tweet-footer-color: #666;
    --assistant-message-background: #f9f9f9;
    --label-color: #333333;
    --assistant-message-border: #ebebeb;
    --assistant-message-text-color: #000000;
    --followup-btn-background: #e8ebfa;
    --chip-bg: rgba(0, 0, 0, 0.06);
    --chip-hover-bg: rgba(0, 0, 0, 0.12);
    --chip-text: #202020;
    --citation-bar-border-color: rgba(0,0,0,0.1);
    --tooltip-bg: #1e1e1e;
    --tooltip-text: #e0e0e0;
    --tooltip-border: #444;
    --tooltip-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    --tooltip-arrow: #1e1e1e;

  }
  
  /* Apply theme variables */
  body {
    background-color: var(--background-color);
    color: var(--text-color);
  }
  
  button:hover {
    background-color: var(--button-hover);
  }
  
  a {
    color: var(--link-color);
  }
  
  /* Header Layout */
  .nav-header {
    background-color: #121212; /* Fixed background color */
    color: #ffffff; /* Fixed text color */
    display: flex;
    justify-content: space-between;
    align-items: center;
      padding: 10px 150px;
    box-shadow: 0px 12px 20px rgba(0, 0, 0, 0.2);
    margin-bottom: 20px;
  }
  
  .nav {
    display: flex;
    align-items: center;
    gap: 20px; /* Add spacing between nav items */
  }
  
  .theme-toggle {
    display: flex;
    align-items: center;
    margin-left: 30px;
    justify-content: center;
    gap: 10px; /* Add spacing between the slider and the label */
  }
  
  .theme-label {
    font-size: 1rem;
  }
  
  /* Navigation buttons, styled similar to your previous icon buttons */
  .nav-button {
    display: inline-block;
    padding: 6px 20px;
  
    font-size: 1rem;
    text-decoration: none;
    color: #333;
    background-color: #e8ebfa;
    border: none;
    border-radius: 8px;
    box-shadow: 0px 8px 16px rgba(0, 0, 0, 0.14),
                0px 0px 2px rgba(0, 0, 0, 0.12);
    transition: background-color 0.2s ease;
    cursor: pointer;
  }
  
  .nav-button:hover {
    background-color: #e0e0e0;
  }
  
  .logo-container .logo {
    height: 40px;
    width: auto;
    margin-top: 5px;
  }
  
  
  /* === Base Layout === */
  body {
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
  }
  
  .container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    }
  
  /* Headings */
  h1, h2 {
    font-size: 2.4rem;
    color: var(--header-text-color);
    text-align: center;
    margin-bottom: 1.5rem;
  }
  
  h3 {
    text-align: center;
    font-size: 1.5rem;
    margin-top: 0rem;
    margin-bottom: 1rem;
    color: var(--text-color);
  }
  
  .page-header {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--header-text-color);
    margin: 0rem;

  }
  
  .page-subheader {
    text-align: center;
    font-size: 1.1rem;
    color: var(--subheader-text-color);
    margin-top: 0rem;
    margin-bottom: 1rem;
  }
  
  
  
  
  /* === Chat Layout === */
  /*  */
  .chat-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1rem;
    position: relative;
  }

  .header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    flex-direction: column;
  }

  .agent-selector-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: absolute;
    right: 150px; /* Align to the right */
  }

  .agent-label {
    font-size: 1.5rem;
    color: var(--text-color); /* Use theme variable for dynamic color */
    font-weight: 500;
    padding-bottom: 5px;
  }

  .agent-selector {
    padding: 0.5rem 0.5rem;
    font-size: 1.1rem;
    border: 1px solid var(--border-color); /* Use theme variable for border */
    color: var(--text-color);
    background-color: var(--assistant-message-background);
    border-radius: 8px;
    cursor: pointer;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
  }

  .agent-selector:hover {
    border-color: var(--button-hover); /* Use theme variable for hover effect */
    box-shadow: 0 0 4px rgba(0, 0, 0, 0.2);
  }
  
  .chat-title {
    font-size: 2.25rem;
    font-weight: bold;
    color: #ffffff;
  }
  
  .chat-subtitle {
    font-size: 1rem;
    color: #aaa;
    margin-top: 0.25rem;
  }
  
  .chat-viewport {
    flex: 1;
    display: flex;
    justify-content: center;
    padding: 2rem 1rem;
    overflow-y: auto;

  }
  
  .chat-box {
    width: 100%;
    max-width: 55vw;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    padding-bottom: 2rem;
  }
  
  .chat-box::-webkit-scrollbar {
    width: 6px;
  }
  
  .chat-box::-webkit-scrollbar-thumb {
    background-color: #444;
    border-radius: 4px;
  }
  
  .message {
    display: inline-block;
    max-width: 85%;
    border-radius: 18px;
    line-height: 1.4;
    font-size: 1rem;
    max-width: 70%;
    word-wrap: break-word;
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.3);
    position: relative;
    margin: 0 1rem; 
  }
  
  .message.user {
    align-self: flex-end;
    padding: 0.75rem 1rem;
    background-color: #2f80ed;
    color: #fff;
    border-bottom-right-radius: 4px;
    text-align: left;
  }
  
  .message.assistant {
    align-self: flex-start;
    background-color: var(--assistant-message-background);
    color: var(--assistant-message-text-color);
    border-bottom-left-radius: 4px;
    padding: 0rem 1rem 1rem;
    text-align: left;
    border: 1px solid var(--assistant-message-border);
  }
  
  
  .timestamp {
    font-size: 0.75rem;
    color: #aaa;
    margin-top: 0.1rem;
    text-align: right;
  }
  
  
  
  .chat-footer {
    padding: 0rem 1.5rem;
  
  }
  
  .chat-form {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    max-width: 55vw;
    margin: 0 auto;
    flex-wrap: wrap; /* allows wrapping if needed */
  }
  
  .input-wrapper {
    position: relative;
    flex-grow: 1;
    padding: 0rem 2.5rem;
    min-width: 0; /* allows it to shrink */
  }
  
  .chat-form input[type="text"] {
    width: 100%;
    min-width: 0;
    padding: 0.75rem 1rem;
    border-radius: 16px;
    border: 1px solid #444;
    font-size: 1rem;
    background-color: #121212;
    color: #eee;
  }
  
  .chat-form input[type="text"]::placeholder {
    color: #888;
  }
  
  .typing-indicator {
    display: flex;
    gap: 4px;
    align-items: center;
    font-size: 1.5rem;
    color: #888;
    animation: pulse 1s infinite ease-in-out;
  }
  
  .typing-indicator span {
    animation: bounce 1.2s infinite;
    animation-delay: calc(0.2s * var(--i));
  }
  
  .typing-indicator span:nth-child(1) { --i: 0; }
  .typing-indicator span:nth-child(2) { --i: 1; }
  .typing-indicator span:nth-child(3) { --i: 2; }
  
  @keyframes bounce {
    0%, 80%, 100% {
      transform: scale(1);
      opacity: 0.3;
    }
    40% {
      transform: scale(1.5);
      opacity: 1;
    }
  }
  
  
  
  
  /* new ones */
  .clear-chat-button {
    border: none;
    background: none;
    cursor: pointer;
    font-size: 1.1rem;
    padding: 6px 8px;
    border-radius: 4px;
    transition: background-color 0.2s;
  }
  .clear-chat-button:hover {
    background-color: rgba(0, 123, 255, 0.6);
  }
  
  .clear-chat-button i {
    margin-right: 8px;
  }
  
  .icon-button {
    border: none;
    background: none;
    cursor: pointer;
    font-size: 1.3rem;
    padding: 4px;
    border-radius: 4px;
    margin-right: 4px;
    transition: background-color 0.2s;
  }
  
  .icon-button i {
    color: #000;
  }
  .icon-button:hover {
    background-color: #eee;
  }
  
  
  
  .questionInputContainer { 
    border-radius: 8px;
    box-shadow:
        0px 8px 16px rgba(0, 0, 0, 0.14),
        0px 0px 2px rgba(0, 0, 0, 0.12);
    width: 100%;
    padding: 15px;
    background: white;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }
  
  .questionInputContainer.disabled {
    background-color: #f0f0f0;
    opacity: 0.6;
    pointer-events: none;
  }
  
  .questionInputContainer.disabled textarea {
    background-color: #f0f0f0;
    opacity: 0.6;
    pointer-events: none;
  }
  
  .questionInputTextArea {
    width: 100%;
  
    border: none;
    outline: none;
    resize: none;
    font-size: 16px;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  }
  
  .questionInputButtonsContainer {
    display: flex;
    flex-direction: row;
    justify-content: flex-end;
    gap: 10px;
  }
  
  /* Toggle Switch */
  
  .toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
  }
  
  .toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
  }
  
  .slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: 0.4s;
    border-radius: 24px;
  }
  
  .slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.4s;
    border-radius: 50%;
  }
  
  input:checked + .slider {
    background-color: #007bff;
  }
  
  input:checked + .slider:before {
    transform: translateX(26px);
  }
  
  
  .initial-questions {
      text-align: center;
      align-items: center; /* Center the buttons horizontally */
  
  }
  
  .initial-questions p {
      font-size: 1.1rem; /* Larger text for the heading */
      margin-bottom: 10px;
  }
  
  .initial-question-btn {
      max-width: 500px; /* Limit the button width */
      margin: 10px 10px; /* More spacing between buttons */
      padding: 20px; /* Larger padding for bigger buttons */
      font-size: 1rem; /* Larger text size */
      text-align: center;
      color: #ffffff;
      background-color: #007bff;
      border: none;
      border-radius: 10px; /* Slightly larger border radius */
      cursor: pointer;
      transition: background-color 0.3s ease, transform 0.2s ease;
  }
  
  .initial-question-btn:hover {
      background-color: #0056b3;
      transform: scale(1.05); /* Slightly enlarge on hover */
  }
    
    button {
      background-color: var(--button-background);
      color: var(--text-color);
      border: none;
      padding: 0.6rem 1.2rem;
      border-radius: 6px;
      font-weight: 600;
      transition: background-color 0.2s ease;
    }
    
    button:hover {
      background-color: var(--button-hover);
    }