/* 朴素风 - 黑白灰一点点蓝 */
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  background: #f7f7f7;
  color: #222;
  font-size: 14px;
  line-height: 1.5;
}
.topbar {
  background: #2c2c2c;
  color: #fff;
  padding: 10px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand { font-weight: 600; }
.user a { color: #ccc; margin-left: 12px; text-decoration: none; }
.user a:hover { color: #fff; }

.container {
  max-width: 780px;
  margin: 20px auto;
  padding: 0 16px;
}
.footer {
  text-align: center;
  color: #999;
  font-size: 12px;
  padding: 20px 0;
}

.flash-wrap { max-width: 780px; margin: 12px auto 0; padding: 0 16px; }
.flash { padding: 8px 12px; border-radius: 4px; margin-bottom: 6px; font-size: 13px; }
.flash-error { background: #fdecea; color: #b71c1c; border: 1px solid #f5c6c6; }
.flash-info { background: #e8f0fe; color: #174ea6; border: 1px solid #c6dafc; }

.card {
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 4px;
  padding: 16px;
  margin-bottom: 16px;
}
.card h2 { margin: 0 0 12px; font-size: 16px; }
.card-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.card-head h2 { margin: 0; }
.meta { font-size: 13px; color: #666; }
.meta select { font-size: 13px; padding: 2px 4px; }
.stat { margin-left: 10px; color: #1976d2; }

/* 登录 */
.login-box {
  max-width: 320px;
  margin: 80px auto;
  background: #fff;
  padding: 24px;
  border: 1px solid #e0e0e0;
  border-radius: 4px;
}
.login-box h2 { margin-top: 0; }
.login-box label { display: block; margin-bottom: 12px; font-size: 13px; }
.login-box input { width: 100%; padding: 8px; border: 1px solid #ccc; border-radius: 3px; font-size: 14px; }
.login-box button {
  width: 100%; padding: 9px; background: #1976d2; color: #fff;
  border: none; border-radius: 3px; font-size: 14px; cursor: pointer;
}
.login-box button:hover { background: #1565c0; }
.hint { color: #888; font-size: 12px; margin-top: 12px; text-align: center; }

/* 表单 */
.task-form { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.task-form textarea, .task-form input[type=text], .task-form input[type=file] {
  width: 100%; padding: 8px; border: 1px solid #ccc; border-radius: 3px;
  font-family: inherit; font-size: 14px; resize: vertical;
}
.task-form button {
  align-self: flex-start; padding: 6px 16px; background: #2c2c2c; color: #fff;
  border: none; border-radius: 3px; cursor: pointer; font-size: 13px;
}
.task-form button:hover { background: #000; }

/* 任务列表 */
.task-list, .msg-list, .upload-list { list-style: none; padding: 0; margin: 0; }
.task {
  display: grid;
  grid-template-columns: 32px 1fr auto auto;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  border-top: 1px solid #f0f0f0;
}
.task .check { font-size: 18px; text-align: center; color: #999; }
.task.done .content { text-decoration: line-through; color: #999; }
.task .time { font-size: 12px; color: #888; }
.task .content { word-break: break-word; }
.check-form { margin: 0; padding: 0; }
.check-btn {
  background: none; border: none; cursor: pointer; font-size: 20px;
  color: #444; padding: 0;
}
.task.done .check-btn { color: #2e7d32; }

/* 建议、上传 */
.msg-list li, .upload-list li {
  border-top: 1px solid #f0f0f0; padding: 8px 0;
}
.msg-body { white-space: pre-wrap; word-break: break-word; }
.msg-meta { font-size: 12px; color: #888; margin-top: 4px; display: flex; gap: 10px; align-items: center; }
.upload-list a { color: #1976d2; text-decoration: none; word-break: break-all; }
.upload-list a:hover { text-decoration: underline; }
.upload-list .size, .upload-list .time { margin-left: 8px; font-size: 12px; color: #888; }
.upload-list .note { font-size: 12px; color: #555; margin-top: 4px; }
.empty { padding: 10px 0; color: #999; font-size: 13px; }

/* 内联表单按钮 */
.inline { display: inline; margin: 0; }
.link { background: none; border: none; color: #999; cursor: pointer; font-size: 12px; padding: 0; margin-left: 8px; }
.link:hover { color: #b71c1c; text-decoration: underline; }