body {
  margin: 0;
  font-family: 'MS Sans Serif', Tahoma, Arial, sans-serif;
  background: #008080;
  height: 100vh;
  direction: ltr;
  box-sizing: border-box;
  overflow: hidden;
}

#desktop-background {
  position: fixed;
  width: 100vw;
  height: 100vh;
  background: #008080;
  z-index: 0;
}

.desktop-icons {
  position: absolute;
  top: 20px;
  left: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  z-index: 5;
}

.desktop-icon {
  width: 32px;
  height: 32px;
  background-size: contain;
  background-repeat: no-repeat;
}

.icon-recycle-bin {
  background-image: url('icons/appwiz_1503.ico');
}

.icon-computer {
  background-image: url('icons/msnstart_110.ico');
}

.icon-msnstart {
  background-image: url('icons/msnstart_120.ico');
}

.icon-shdocvw {
  background-image: url('icons/shdocvw_257.ico');
}

.window {
  position: absolute;
  background: #c0c0c0; 
  border: 2px solid #000080; 
  border-top-color: #ffffff; 
  border-left-color: #ffffff;
  border-bottom-color: #808080;
  border-right-color: #808080;
  box-shadow: 1px 1px 0 #000000; 
  min-width: 320px;
  min-height: 250px;
  display: flex;
  flex-direction: column;
  z-index: 10;
  max-width: 90vw;
  width: 520px;
  left: 20vw !important; 
  top: 5vh !important;
}

.window-header {
  background: linear-gradient(to right, #000080, #1084d0); 
  color: #ffffff;
  padding: 3px 4px;
  font-size: 11px;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: move;
  user-select: none;
  border: 2px outset #ffffff; 
  box-shadow: inset -1px -1px 0 #000080, inset 1px 1px 0 #dfdfdf;
}
.window-header .window-icon {
  width: 16px;
  height: 16px;
  margin-right: 4px;
}

.window-controls {
  display: flex;
  gap: 2px;
}

.close-btn, .minimize-btn, .restore-btn {
  width: 16px;
  height: 16px;
  background: #c0c0c0;
  border: 2px outset #ffffff;
  font-weight: bold;
  color: #000000;
  font-size: 12px;
  line-height: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.close-btn::after {
  content: "×";
  font-size: 10px;
  font-weight: bold;
  color: #000000;
}
.minimize-btn::after {
  content: "_";
  font-size: 10px;
  font-weight: bold;
  color: #000000;
}
.restore-btn::after {
  content: "□";
  font-size: 10px;
  font-weight: bold;
  color: #000000;
}
.close-btn:active, .minimize-btn:active, .restore-btn:active {
  border: 2px inset #ffffff;
  background: #e0e0e0;
}

.toolbar {
  background: #c0c0c0;
  display: flex;
  gap: 4px;
  padding: 2px 4px;
  align-items: center;
  border-bottom: 1px solid #808080;
  border-top: 1px solid #ffffff;
}

.toolbar button {
  font-family: 'MS Sans Serif', Tahoma, Arial, sans-serif;
  font-size: 11px;
  border: 2px outset #ffffff;
  background: #c0c0c0;
  padding: 2px 8px;
  cursor: pointer;
}
.toolbar button:active {
  border: 2px inset #ffffff;
  background: #e0e0e0;
}

.models-dropdown {
  position: relative;
}
#models-list, .models-list {
  position: absolute;
  top: 100%;
  left: 0;
  background: #c0c0c0;
  border: 2px solid #000080;
  border-top-color: #ffffff;
  border-left-color: #ffffff;
  border-bottom-color: #808080;
  border-right-color: #808080;
  width: 250px;
  z-index: 300;
  list-style: none;
  padding: 4px 0;
  margin: 2px 0 0 0;
  box-shadow: 1px 1px 0 #000000;
}
#models-list li, .models-list li {
  padding: 4px 8px;
  cursor: pointer;
  font-size: 11px;
}
#models-list li:hover, .models-list li:hover {
  background: #000080;
  color: #ffffff;
}
.hidden {
  display: none !important;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 11px;
}
.model-checkbox {
  display: none;
}
.checkbox-custom {
  width: 12px;
  height: 12px;
  background: #ffffff;
  border: 2px inset #808080;
  position: relative;
  flex-shrink: 0;
}
.model-checkbox:checked + .checkbox-custom::after {
  content: "✔";
  position: absolute;
  top: -2px;
  left: 1px;
  font-size: 10px;
  color: #000000;
  font-weight: bold;
}
#models-list li:hover .checkbox-custom, .models-list li:hover .checkbox-custom {
  background: #ffffff;
}
.model-icon {
  width: 32px;
  height: 32px;
  margin-right: 6px;
  vertical-align: middle;
}

.chat-content {
  background: #ffffff;
  flex: 1 1 auto;
  padding: 8px;
  overflow-y: auto;
  font-family: 'Courier New', monospace;
  font-size: 12px;
  min-height: 150px;
  max-height: 60vh;
  border: 2px inset #ffffff;
}
.chat-message {
  margin-bottom: 0.8em;
}
.chat-message.user {
  text-align: right;
  font-weight: bold;
  color: #000080;
}
.chat-message.ai {
  text-align: left;
  font-weight: bold;
  color: #003366;
}
.chat-message-content {
  white-space: pre-wrap;
}

#chat-form, .chat-form {
  display: flex;
  border-top: 2px solid #ffffff;
  border-bottom: 2px solid #808080;
  background: #c0c0c0;
  padding: 4px 6px;
  gap: 2px;
}
#chat-input, .chat-input {
  flex: 1;
  font-family: 'MS Sans Serif', Tahoma, Arial, sans-serif;
  font-size: 11px;
  border: 2px inset #ffffff;
  background: #ffffff;
  padding: 3px 6px;
  outline: none;
}
#send-btn, .send-btn {
  width: 60px;
  background: #c0c0c0;
  border: 2px outset #ffffff;
  font-family: 'MS Sans Serif', Tahoma, Arial, sans-serif;
  font-size: 11px;
  font-weight: bold;
}
#send-btn:active, .send-btn:active {
  border: 2px inset #ffffff;
  background: #e0e0e0;
}
.footer {
  background: #c0c0c0;
  border-top: 1px solid #808080;
  border-bottom: 1px solid #ffffff;
  padding: 2px 6px;
  min-height: 20px;
  font-size: 11px;
  color: #000000;
}
.resize-handle {
  width: 20px;
  height: 20px;
  position: absolute;
  right: 6px;
  bottom: 6px;
  background-image: linear-gradient(135deg, #fefefe 16.67%, #c6c6c6 16.67%, #c6c6c6 33.33%, #848584 33.33%, #848584 50%, #fefefe 50%, #fefefe 66.67%, #c6c6c6 66.67%, #c6c6c6 83.33%, #848584 83.33%, #848584 100%);
  background-size: 6.49px 6.49px;
  clip-path: polygon(100% 0px, 0px 100%, 100% 100%);
  cursor: nwse-resize;
}

.task-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 30px;
  background: #c0c0c0;
  border-top: 2px solid #ffffff;
  border-bottom: 2px solid #000000;
  border-left: 2px solid #ffffff;
  border-right: 2px solid #000000;
  box-shadow: inset 1px 1px 0 #dfdfdf, inset -1px -1px 0 #808080;
  display: flex;
  align-items: center;
  z-index: 100;
  padding: 0 2px;
}

.clock {
  background: #c0c0c0;
  padding: 2px 6px;
  border: 2px inset #ffffff;
  font-family: 'MS Sans Serif', Tahoma, Arial, sans-serif;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  min-width: 50px;
  text-align: center;
  margin-left: auto;
}

#start-btn {
  display: flex;
  align-items: center;
  font-family: 'MS Sans Serif', Tahoma, Arial, sans-serif;
  font-size: 11px;
  font-weight: bold;
  background: transparent;
  border: none; 
  padding: 0; 
  cursor: pointer;
  margin: 0; 
  box-shadow: none; 
}
#start-btn:active {
  background: transparent; 
  border: none; 
  box-shadow: none; 
}
.start-logo {
  vertical-align: middle;
  margin: 0; 
  width: 110px; 
  height: 35px; 
}
.task-menu {
  position: absolute;
  left: 0;
  bottom: 40px; 
  background: #c0c0c0;
  border: 2px solid #000080;
  border-top-color: #ffffff;
  border-left-color: #ffffff;
  border-bottom-color: #808080;
  border-right-color: #808080;
  display: flex;
  z-index: 200;
  min-width: 200px;
  box-shadow: 1px 1px 0 #000000;
}
.task-menu-sidebar {
  background: linear-gradient(180deg, #000080 0%, #555555 100%);
  color: #ffffff;
  width: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  writing-mode: vertical-lr;
  text-align: center;
  font-size: 14px;
  padding: 8px 0;
  border-right: 1px solid #808080;
}
.task-menu-title {
  font-size: 16px;
  font-weight: bold;
}
.task-menu-list {
  list-style: none;
  margin: 0;
  padding: 6px 0 6px 6px;
  min-width: 160px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.task-menu-list li {
  background: none;
  border: none;
  padding: 4px 8px;
  cursor: pointer;
  font-size: 11px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.task-menu-list li:hover {
  background: #000080;
  color: #ffffff;
}
.task-menu-list .separator {
  height: 1px;
  background: #808080;
  margin: 4px 0;
  width: 90%;
}
.task-menu-list .icon {
  width: 32px;
  height: 32px;
}

.credits-window {
  top: 10vh;
  left: 5vw;
  padding-bottom: 8px;
  z-index: 50;
}
.credits-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  padding: 12px 8px;
  text-align: center;
  font-size: 11px;
}
.credits-content ul {
  text-align: left;
  font-size: 10px;
}
.credits-content li {
  margin-bottom: 4px;
}
.credits-content hr {
  width: 90%;
  border: none;
  border-top: 1px solid #808080;
}
.credits-icon {
  width: 32px;
  height: 32px;
  margin-bottom: 2px;
}

a {
  color: #000080;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  background: url('icons/Wait.png') no-repeat center center;
  background-size: contain;
  vertical-align: middle;
  margin-left: 4px;
}

.error-window {
  z-index: 1000;
  position: fixed;
  background: #c0c0c0;
  border: 2px solid #000080;
  border-top-color: #ffffff;
  border-left-color: #ffffff;
  border-bottom-color: #808080;
  border-right-color: #808080;
  box-shadow: 2px 2px 0 #000000;
}
.error-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px;
  font-size: 11px;
  background: #c0c0c0;
  height: 100%;
}
.error-content p {
  margin: 0 0 16px 0;
  text-align: center;
  color: #000000;
}
#error-ok-btn {
  width: 60px;
  background: #c0c0c0;
  border: 2px outset #ffffff;
  font-family: 'MS Sans Serif', Tahoma, Arial, sans-serif;
  font-size: 11px;
  font-weight: bold;
  padding: 2px 8px;
  cursor: pointer;
}
#error-ok-btn:active {
  border: 2px inset #ffffff;
  background: #e0e0e0;
}
.error-icon {
  width: 16px;
  height: 16px;
  margin-right: 4px;
  vertical-align: middle;
}

@media (max-width: 768px) {
  .window {
    width: 90vw !important;
    min-height: 70vh;
    left: 5vw !important; 
    top: 5vh !important;
  }
  .error-window {
    width: 80vw !important;
    left: 10vw !important;
    top: 15vh !important;
  }
  .task-bar {
    height: 28px;
    padding: 2px;
  }
  .clock {
    margin-left: auto;
    font-size: 10px;
  }
  .desktop-icons {
    left: 10px;
    gap: 15px;
  }
  .desktop-icon {
    width: 24px;
    height: 24px;
  }
  #start-btn {
    margin-right: 0;
    font-size: 10px;
    padding: 0; 
    background: transparent; 
    border: none; 
    box-shadow: none; 
    margin: 0; 
  }
  .task-menu {
    left: 0;
    bottom: 34px; 
    min-width: 180px;
  }
  .task-menu-sidebar {
    width: 32px;
    font-size: 12px;
  }
  .task-menu-title {
    font-size: 14px;
  }
  .task-menu-list {
    min-width: 140px;
  }
  .task-menu-list .icon {
    width: 24px;
    height: 24px;
  }
  .toolbar button {
    padding: 2px 6px;
    font-size: 10px;
  }
  .spinner {
    width: 14px;
    height: 14px;
  }
  .start-logo {
    width: 60px; 
    height: 33px;
  }
}