* {
  box-sizing: border-box;
  font-family: 'Roboto', sans-serif;
}

body {
  margin: 0;
  background-image: url("https://th.bing.com/th/id/R.5703545e7adb856bbb7f70acf1881184?rik=E7MaJ3%2fN93efGA&riu=http%3a%2f%2fmedia.techeblog.com%2fimages%2fblack-hole-event-horizon.jpg&ehk=BzpbiGJNjqV3OG4GIUxCQubYD1PsEpgP5IyCs0T4eVY%3d&risl=&pid=ImgRaw&r=0&sres=1&sresct=1");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 500px;
  background: white;
  padding: 1rem;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.hidden { 
  display: none; 
}

.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 1rem;
}

input {
  padding: 10px;
  margin-top: 4px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

button {
  padding: 10px;
  background: #4CAF50;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

.chat-box {
  height: 300px;
  overflow-y: auto;
  margin-bottom: 10px;
  background: #f9f9f9;
  padding: 10px;
  border-radius: 6px;
}

.message {
  margin: 5px 0;
  max-width: 80%;
  padding: 8px 12px;
  border-radius: 12px;
  clear: both;
}

.mine {
  background-color: #d2f8d2;
  float: right;
}

.other {
  background-color: #f0d4d4;
  float: left;
}

.switch {
  text-align: center;
  margin-top: 1rem;
}

.google-btn {
  background-color: #4285f4;
  margin-top: 5px;
}

/* Media upload styles */
#inputArea {
  display: flex;
  padding: 10px;
  background: #fff;
  border-top: 1px solid #ccc;
  gap: 8px;
  align-items: center;
}

#inputArea input[type="text"] {
  flex: 1;
  padding: 10px;
  border-radius: 20px;
  border: 1px solid #ccc;
}

input[type="file"] {
  display: none;
}

.media-btn {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  padding: 5px;
  border-radius: 50%;
}

.media-btn:hover {
  background: #f0f0f0;
}

#mediaPreview {
  padding: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  border-top: 1px solid #ccc;
  background: #fafafa;
}

#mediaPreview img, #mediaPreview video {
  max-width: 80px;
  max-height: 80px;
  border-radius: 8px;
  cursor: pointer;
}

.message img {
  max-width: 200px;
  border-radius: 8px;
  margin-top: 5px;
}

.message video {
  max-width: 200px;
  border-radius: 8px;
  margin-top: 5px;
}

.upload-progress {
  background: #e0e0e0;
  border-radius: 10px;
  overflow: hidden;
  margin: 5px 0;
}

.upload-progress-bar {
  height: 20px;
  background: #4CAF50;
  transition: width 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 12px;
}

/* Chat room styles */
.chat-header {
  display: flex;
  align-items: center;
  padding: 10px;
  background: #4CAF50;
  color: white;
  gap: 10px;
}

.chat-header h2 {
  margin: 0;
  flex: 1;
}

.menu-btn {
  background: none;
  border: none;
  color: white;
  font-size: 18px;
  cursor: pointer;
  padding: 5px;
  border-radius: 3px;
}

.menu-btn:hover {
  background: rgba(255,255,255,0.2);
}

#current-room-name {
  font-size: 14px;
  opacity: 0.8;
  background: rgba(255,255,255,0.2);
  padding: 4px 8px;
  border-radius: 10px;
}

.chat-container {
  display: flex;
  height: 400px;
  position: relative;
}

.room-sidebar {
  width: 250px;
  background: #f8f9fa;
  border-right: 1px solid #ddd;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
}

.room-sidebar.show {
  transform: translateX(0);
}

.sidebar-header {
  padding: 15px;
  border-bottom: 1px solid #ddd;
  background: white;
}

.sidebar-header h3 {
  margin: 0 0 10px 0;
  font-size: 16px;
}

.room-search-input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 5px;
  margin-bottom: 10px;
  font-size: 14px;
}

.room-search-input:focus {
  outline: none;
  border-color: #4CAF50;
}

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

.create-room-btn, .join-room-btn {
  background: #007bff;
  color: white;
  border: none;
  padding: 8px 12px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 12px;
  flex: 1;
}

.join-room-btn {
  background: #28a745;
}

.create-room-btn:hover {
  background: #0056b3;
}

.join-room-btn:hover {
  background: #1e7e34;
}

.search-results {
  border-top: 1px solid #ddd;
  margin-top: 10px;
  padding-top: 10px;
}

.search-results h4 {
  margin: 0 0 10px 10px;
  font-size: 14px;
  color: #666;
}

.search-results.hidden {
  display: none;
}

.room-list {
  padding: 10px;
}

.room-item {
  display: flex;
  align-items: center;
  padding: 10px;
  margin-bottom: 5px;
  background: white;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.room-item:hover {
  background: #f0f0f0;
  border-color: #4CAF50;
}

.room-item.active {
  background: #e8f5e8;
  border-color: #4CAF50;
}

.room-info {
  flex: 1;
}

.room-name {
  font-weight: 500;
  margin-bottom: 2px;
}

.room-last-message {
  font-size: 12px;
  color: #666;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.room-unread {
  background: #ff4444;
  color: white;
  border-radius: 10px;
  padding: 2px 6px;
  font-size: 10px;
  margin-left: 5px;
}

.room-item.search-result {
  border-left: 3px solid #007bff;
}

.room-item.search-result .room-info {
  position: relative;
}

.room-join-btn {
  background: #28a745;
  color: white;
  border: none;
  padding: 4px 8px;
  border-radius: 3px;
  font-size: 10px;
  cursor: pointer;
  margin-left: 5px;
}

.room-join-btn:hover {
  background: #1e7e34;
}

.room-member-count {
  font-size: 11px;
  color: #888;
  margin-top: 2px;
}

.no-results {
  padding: 20px;
  text-align: center;
  color: #666;
  font-style: italic;
}

.chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

@media (max-width: 768px) {
  .room-sidebar {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    z-index: 1000;
    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
  }
  
  .chat-container {
    height: 350px;
  }
}