* {
  box-sizing: border-box;
}
body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  margin: 0;
}
.wrap {
  display: flex;
  justify-content: center;
  padding: 28px 12px;
}
.card {
  width: 560px;
  background: #fff;
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.06);
}
.head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.brand {
  font-weight: 800;
  letter-spacing: 0.2px;
}
.status {
  font-size: 12px;
  color: #666;
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}
.tab {
  flex: 1;
  padding: 10px;
  border: 1px solid #ddd;
  background: #fafafa;
  cursor: pointer;
  border-radius: 10px;
}
.tab.active {
  background: #007bff;
  color: #fff;
  border-color: #007bff;
}

.panel input {
  width: 100%;
  padding: 10px;
  margin-top: 8px;
  border: 1px solid #ddd;
  border-radius: 10px;
}
.panel button {
  width: 100%;
  padding: 10px;
  margin-top: 10px;
  border: 0;
  border-radius: 10px;
  background: #007bff;
  color: #fff;
  cursor: pointer;
}

.hidden {
  display: none;
}
.msg {
  margin-top: 10px;
  font-size: 13px;
  color: #b00020;
  min-height: 18px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
.small {
  font-size: 12px;
  color: #666;
}
.me {
  font-weight: bold;
}
.mebox {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 10px 12px;
  background: #007bff;
  color: #fff;
  cursor: pointer;
}
button.ghost {
  background: #f1f1f1;
  color: #222;
}
button.danger {
  background: #dc3545;
}

.messages {
  list-style: none;
  padding: 0;
  margin: 0;
  height: 340px;
  overflow: auto;
  border: 1px solid #ddd;
  border-radius: 12px;
  background: #fff;
}
.messages li {
  padding: 10px 12px;
  border-bottom: 1px dashed #eee;
}
.system {
  color: #666;
  font-style: italic;
}

.bubbleHead {
  font-weight: bold;
  font-size: 13px;
  margin-bottom: 6px;
}
.bubbleTime {
  font-weight: normal;
  color: #777;
  font-size: 12px;
  margin-left: 6px;
}
.bubbleText {
  white-space: pre-wrap;
}

.media {
  margin-top: 8px;
}
.media img {
  max-width: 320px;
  border-radius: 12px;
  display: block;
  border: 1px solid #eee;
}
.media video {
  max-width: 360px;
  border-radius: 12px;
  display: block;
  border: 1px solid #eee;
}

.composer {
  margin-top: 10px;
}
.row {
  display: flex;
  gap: 8px;
  align-items: center;
}
.text {
  flex: 1;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 10px;
}
.fileBtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 12px;
  border-radius: 10px;
  background: #f1f1f1;
  color: #222;
  cursor: pointer;
  user-select: none;
}
.fileBtn input {
  display: none;
}

.emoji {
  margin-top: 8px;
  border: 1px solid #ddd;
  border-radius: 12px;
  padding: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  max-height: 140px;
  overflow: auto;
  background: #fff;
}
.emoji button {
  background: #f7f7f7;
  color: #222;
  padding: 6px 8px;
  border-radius: 10px;
}

.hint {
  margin-top: 8px;
  font-size: 12px;
  color: #444;
  min-height: 16px;
}