body {
  margin: 0;
  font-family: Tahoma, Arial, sans-serif;
  background: #3a6ea5;
  color: #111;
  font-size: 14px;
}

.xp-window {
  width: 100%;
  min-height: calc(100vh - 34px);
  background: #ece9d8;
  border: 2px solid #0055e5;
  box-sizing: border-box;
}

.titlebar {
  height: 30px;
  background: linear-gradient(#1f78ff, #0055e5);
  color: #fff;
  font-weight: bold;
  padding: 5px 8px;
  box-sizing: border-box;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.window-buttons button {
  width: 24px;
  height: 22px;
  margin-left: 3px;
  border: 1px solid #fff;
  background: #dfe8ff;
  color: #003399;
  font-weight: bold;
}

.menubar {
  padding: 6px 10px;
  background: #f7f3e7;
  border-bottom: 1px solid #c8c8c8;
}

.toolbar {
  padding: 8px 10px;
  background: #edeadf;
  border-bottom: 1px solid #bbb;
}

.toolbar button {
  margin-right: 6px;
  padding: 4px 8px;
  border: 1px solid #aaa;
  background: linear-gradient(#fff, #ddd);
}

.addressbar {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 6px 10px;
  background: #f4f1e8;
  border-bottom: 1px solid #aaa;
}

.addressbar input {
  flex: 1;
  height: 22px;
  border: 1px solid #999;
  padding: 2px 6px;
  font-family: Tahoma, Arial, sans-serif;
}

.page {
  background: white;
  margin: 0;
  padding: 14px;
}

.site-header {
  display: flex;
  align-items: center;
  border-bottom: 3px solid #6aa4bd;
  padding-bottom: 10px;
  gap: 20px;
}

.logo {
  font-family: Georgia, serif;
  font-size: 42px;
  font-style: italic;
  color: #1d6f6d;
  font-weight: bold;
}

.tagline {
  color: #666;
  font-style: italic;
}

.site-header nav {
  margin-left: auto;
}

a {
  color: #0000cc;
  text-decoration: underline;
}

.layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 12px;
  margin-top: 12px;
}

.box {
  border: 1px solid #8ca7ad;
  background: #f8f8f8;
  margin-bottom: 14px;
}

.box h3,
.chat h2 {
  margin: 0;
  padding: 8px 10px;
  background: linear-gradient(#dbeadb, #c7dcc7);
  border-bottom: 1px solid #8ca7ad;
  font-size: 16px;
}

.box a {
  display: block;
  padding: 8px 12px;
}

.conversation {
  margin: 10px;
  padding: 8px;
  border: 1px solid #9bb7d9;
  background: #dce9fb;
}

.delete {
  margin: 170px 10px 10px;
  padding: 6px 12px;
  border: 1px solid #777;
  background: #eee;
}

.chat {
  border: 1px solid #8ca7ad;
  background: #fff;
}

.messages {
  min-height: 380px;
}

.message {
  display: grid;
  grid-template-columns: 45px 1fr 80px;
  gap: 12px;
  padding: 12px;
  border-bottom: 1px solid #ddd;
}

.message b {
  color: #006600;
  font-size: 16px;
}

.message.user b {
  color: #003399;
}

.avatar {
  width: 34px;
  height: 34px;
  border: 1px solid #aaa;
  background: #dce9fb;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bot .avatar {
  background: #008033;
  color: white;
}

.time {
  color: #777;
  text-align: right;
}

.input-box {
  background: #f0eee3;
  border-top: 1px solid #aaa;
  padding: 12px;
  position: relative;
}

.input-box label {
  display: block;
  font-weight: bold;
  margin-bottom: 6px;
}

textarea {
  width: 100%;
  height: 70px;
  box-sizing: border-box;
  border: 1px solid #999;
  font-family: Tahoma, Arial, sans-serif;
  font-size: 14px;
}

#sendBtn {
  margin-top: 8px;
  padding: 6px 14px;
  border: 1px solid #777;
  background: linear-gradient(#fff, #ddd);
  font-weight: bold;
  color: #003399;
}

#clearBtn {
  float: right;
  margin-top: 14px;
}

footer {
  margin-top: 12px;
  border-top: 1px solid #ccc;
  padding: 10px 0;
  font-size: 13px;
  color: #444;
}

footer span {
  float: right;
}

.taskbar {
  height: 34px;
  background: linear-gradient(#2d8cff, #0055cc);
  display: flex;
  align-items: center;
  color: white;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
}

.start {
  height: 34px;
  width: 110px;
  background: linear-gradient(#67c443, #168000);
  color: white;
  font-size: 22px;
  font-weight: bold;
  border: 0;
  text-align: left;
  padding-left: 14px;
  border-radius: 0 12px 12px 0;
}

.task {
  margin-left: 8px;
  background: #1b61c5;
  border: 1px solid #6aa4ff;
  padding: 6px 18px;
}

.clock {
  margin-left: auto;
  padding-right: 16px;
}

@media (max-width: 800px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: none;
  }

  .site-header {
    display: block;
  }

  .site-header nav {
    margin-top: 10px;
  }
}