style.css

/* -----------------------------------------------------------------
   GLOBAL FONT SETUP
   ----------------------------------------------------------------- */

/* 1.  Text fonts – Noto Sans Variable covers 150+ scripts           */
@font-face {
  font-family: "Noto Sans Variable";
  font-style: normal;
  font-weight: 100 900;                             /* variable axis */
  src: url("/fonts/NotoSans-Variable.woff2") format("woff2-variations"),
       url("/fonts/NotoSans-Variable.ttf") format("truetype");
  font-display: swap;
}

/* 2.  Symbols, arrows, dingbats, Braille, etc.                      */
@font-face {
  font-family: "Noto Sans Symbols 2";
  font-style: normal;
  font-weight: 400;
  src: url("/fonts/NotoSansSymbols2-Regular.woff2") format("woff2"),
       url("/fonts/NotoSansSymbols2-Regular.ttf")  format("truetype");
  font-display: swap;
}

/* 3.  Colour emoji – modern browsers prefer the tiny COLRv1 build   */
@font-face {
  font-family: "Noto Color Emoji";
  src: url("/fonts/NotoColorEmoji_COLRv1.woff2") format("woff2") tech(color-COLRv1);
  font-display: swap;
}
@font-face {                                     /* legacy bitmap fallback */
  font-family: "Noto Color Emoji";
  src: url("/fonts/NotoColorEmoji.ttf") format("truetype");
  font-display: swap;
}

/* 4.  Monospace stack that still knows emoji                         */
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 100 800;
  src: url("/fonts/JetBrainsMono-Variable.woff2") format("woff2-variations"),
       url("/fonts/JetBrainsMono-Variable.ttf")   format("truetype");
  font-display: swap;
}

/* -----------------------------------------------------------------
   THEME VARIABLES
   ----------------------------------------------------------------- */
:root {
  --sidebar-bg: #2c3e50;
  --sidebar-text: #ecf0f1;
  --main-bg: #f5f6fa;
  --card-bg: #ffffff;
  --accent: #3498db;
  --accent-hover: #2980b9;
  --text: #2c3e50;
  --muted: #7f8c8d;
  --code-bg: #1e1e1e;
  --code-text: #dcdcdc;
  --input-bg: #fff;
  --input-border: #ccc;
  --btn-radius: 4px;

  /* NEW → font-family tokens */
  --ff-text: "Noto Sans Variable", "Noto Sans", "Noto Sans Symbols 2",
             "Noto Color Emoji", system-ui, sans-serif;
  --ff-mono: "JetBrains Mono", "Noto Sans Mono", "Noto Color Emoji", monospace;
}

/* -----------------------------------------------------------------
   RESET & BASE
   ----------------------------------------------------------------- */
* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: var(--ff-text); /* ← was `sans-serif` */
  background: var(--main-bg);
  color: var(--text);
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* -----------------------------------------------------------------
   LAYOUT
   ----------------------------------------------------------------- */
#app {
  display: flex;
  height: 100%;
  position: relative;
}

/* Sidebar toggle */
.toggle-btn {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 6px 8px;
  font-size: 1.2em;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  border: none;
  border-radius: var(--btn-radius);
  cursor: pointer;
  z-index: 1000;
}
.toggle-btn:hover {
  background: #1f2a36;
}

/* Sidebar */
#sidebar {
  width: 280px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  padding: 20px;
  overflow-y: auto;
}
#sidebar.hidden {
  display: none;
}
#sidebar h2 {
  margin-top: 0;
  font-weight: 600;
}

/* Sidebar Controls */
#sidebar button,
#sidebar select,
#sidebar input {
  width: 100%;
  margin: 8px 0;
  font-family: inherit;
}
#sidebar button {
  background: var(--accent);
  color: #fff;
  padding: 10px;
  border: none;
  border-radius: var(--btn-radius);
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

#sidebar button:hover {
  background: var(--accent-hover);
}
#sidebar select,
#sidebar input {
  padding: 8px;
  border: 1px solid var(--input-border);
  border-radius: var(--btn-radius);
  background: var(--input-bg);
  color: var(--text);
}

/* Sessions List */
#sessionsList {
  list-style: none;
  padding: 0;
  margin: 12px 0;
}
#sessionsList li {
  padding: 8px;
  margin-bottom: 6px;
  background: #34495e;
  border-radius: var(--btn-radius);
  cursor: pointer;
  transition: background 0.2s;
}
#sessionsList li:hover,
#sessionsList li.active {
  background: #3d566e;
}

/* Main Layout */
#main {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
}
#main.preview-fullscreen {
  position: absolute;
  top: 0;
  left: 280px;
  right: 0;
  bottom: 0;
  background: #fff;
  z-index: 10;
}
#main.preview-fullscreen #chatWindow,
#main.preview-fullscreen #inputArea,
#main.preview-fullscreen #terminal {
  display: none;
}
#main.preview-fullscreen .preview-toggle {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 1000;
}
#main.preview-fullscreen #previewContainer {
  position: static !important;
  width: auto !important;
  height: auto !important;
  border: none !important;
  box-shadow: none !important;
  flex: 1;
}

/* Chat */
#chatWindow {
  flex: 1;
  padding: 20px;
  background: var(--card-bg);
  overflow-y: auto;
}

.message {
  margin: 10px 0;
  max-width: 75%;
  line-height: 1.4;
}
.message.user {
  align-self: flex-end;
  background: var(--accent);
  color: #fff;
  padding: 10px;
  border-radius: var(--btn-radius) var(--btn-radius) 0 var(--btn-radius);
}
.message.bot {
  background: var(--input-bg);
  color: var(--text);
  padding: 10px;
  border-radius: var(--btn-radius) var(--btn-radius) var(--btn-radius) 0;
}

/* Input Area */
#inputArea {
  display: flex;
  padding: 12px;
  background: var(--card-bg);
  border-top: 1px solid #ddd;
}
#inputArea textarea {
  flex: 1;
  padding: 10px;
  border: 1px solid var(--input-border);
  border-radius: var(--btn-radius);
  resize: none;
  font-family: inherit;
}
#inputArea button {
  margin-left: 8px;
  padding: 10px 16px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--btn-radius);
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
#inputArea button:hover {
  background: var(--accent-hover);
}

/* Terminal */
#terminal {
  flex: 0 0 150px;
  background: #000;
  color: #0f0;
  font-family: var(--ff-mono); /* ← emoji-safe monospace */
  font-size: 0.9em;
  padding: 8px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
#terminal.hidden {
  display: none;
}

/* Preview Container */
#previewContainer {
  position: absolute;
  bottom: 80px;
  right: 20px;
  width: 360px;
  height: 260px;
  background: var(--card-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--btn-radius);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  overflow: auto;
  z-index: 500;
}
#previewContainer img,
#previewContainer svg,
#previewContainer iframe {
  max-width: 100%;
  display: block;
  margin: 8px 0;
}
#previewContainer .minimize-btn {
  position: absolute;
  top: 6px;
  right: 6px;
  background: transparent;
  border: none;
  font-size: 1.2em;
  cursor: pointer;
  color: var(--muted);
}
#previewContainer .minimize-btn:hover {
  color: var(--text);
}

/* Expand Preview Button */
.preview-toggle {
  align-self: center;
  margin: 4px 0;
  padding: 6px 12px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--btn-radius);
  cursor: pointer;
  font-weight: 600;
  transition: background 0.2s;
}
.preview-toggle:hover {
  background: var(--accent-hover);
}

/* Code Blocks & Syntax Highlighting */
.message.bot.markdown pre {
  background: var(--code-bg) !important;
  color: var(--code-text) !important;
  position: relative;
  counter-reset: lineno;
  font-family: var(--ff-mono); /* ← emoji-safe monospace */
}
.message.bot.markdown pre code {
  display: block;
}
.message.bot.markdown pre code span.ln {
  display: block;
  padding-left: 3rem;
  position: relative;
}
.message.bot.markdown pre code span.ln::before {
  counter-increment: lineno;
  content: counter(lineno);
  position: absolute;
  left: 0;
  width: 2.5rem;
  text-align: right;
  color: rgba(0, 0, 0, 0.3);
  user-select: none;
}
.message.bot.markdown pre code.hljs {
  background: transparent !important;
  color: inherit !important;
}

/* Highlight colour overrides */
.hljs-comment,
.hljs-quote {
  color: #5c6370;
}
.hljs-keyword,
.hljs-selector-tag,
.hljs-literal {
  color: #c678dd;
}
.hljs-string,
.hljs-meta .hljs-string {
  color: #98c379;
}
.hljs-number,
.hljs-built_in,
.hljs-builtin-name {
  color: #d19a66;
}
.hljs-variable,
.hljs-template-variable {
  color: #e06c75;
}
.hljs-title,
.hljs-section,
.hljs-selector-id {
  color: #61afef;
}
.hljs-subst {
  color: #abb2bf;
}
.hljs-type,
.hljs-class .hljs-title {
  color: #e5c07b;
}
.hljs-tag,
.hljs-name,
.hljs-attribute {
  color: #e06c75;
}
.hljs-regexp,
.hljs-link,
.hljs-symbol,
.hljs-bullet {
  color: #56b6c2;
}
.hljs-meta,
.hljs-deletion {
  color: #c678dd;
}
.hljs-addition {
  color: #98c379;
}
.hljs-emphasis {
  font-style: italic;
}
.hljs-strong {
  font-weight: bold;
}

/* Buttons inside code blocks */
.copy-btn {
  position: absolute;
  top: 4px;
  right: 6px;
  font-size: 0.8em;
  padding: 4px 8px;
  background: #444;
  color: #fff;
  border: none;
  border-radius: var(--btn-radius);
  cursor: pointer;
  opacity: 0.7;
}
.copy-btn:hover {
  opacity: 1;
}
/* white sidebar + dark text */
#sidebar{
  background:#fff !important;
}
#sidebar label,
#sidebar h2{
  color:var(--text) !important;   /* #2c3e50 */
}