* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft YaHei", system-ui, sans-serif;
}
:root {
  --primary: #2563eb;
  --primary-light: #3b82f6;
  --success: #10b981;
  --danger: #ef4444;
  --gray: #64748b;
  --light-bg: #f8fafc;
  --card-shadow: 0 4px 20px rgba(0,0,0,0.08);
  --radius: 12px;
}
body {
  background: var(--light-bg);
  padding: 24px;
  color: #1e293b;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
}
.header-bar {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  padding: 16px 24px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header-bar h1 {
  font-size: 24px;
  margin: 0;
}
.card {
  background: #fff;
  padding: 24px;
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  margin-bottom: 24px;
}
.card h2, .card h3 {
  margin-bottom: 18px;
  color: #0f172a;
  display: flex;
  align-items: center;
  gap:8px;
}
.form-row {
  margin-bottom: 16px;
}
label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  color: #334155;
}
input, textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  font-size: 15px;
  transition: 0.2s;
}
input:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}
.btn {
  padding: 12px 22px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.2s;
  margin: 4px;
}
.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}
.btn-success {
  background: var(--success);
  color: white;
}
.btn-danger {
  background: var(--danger);
  color: white;
}
.btn-gray {
  background: var(--gray);
  color: white;
}
.activity-item {
  border: 1px solid #e2e8f0;
  padding: 18px;
  border-radius: var(--radius);
  margin-bottom: 14px;
  transition: 0.2s;
}
.activity-item:hover {
  box-shadow: var(--card-shadow);
}
.tag-enable {
  display: inline-block;
  padding: 3px 10px;
  background: #dcfce7;
  color: var(--success);
  border-radius: 20px;
  font-size:13px;
}
.tag-disable {
  display: inline-block;
  padding: 3px 10px;
  background: #f1f5f9;
  color: var(--gray);
  border-radius: 20px;
  font-size:13px;
}
.btn-group {
  margin-top:12px;
  display: flex;
  flex-wrap: wrap;
  gap:6px;
}
.qr-box {
  margin-top:16px;
  text-align:center;
}
.qr-box img {
  width: 320px;
  margin:10px auto;
  border:8px solid white;
  box-shadow: var(--card-shadow);
  border-radius:8px;
}
/* 签到页面样式 */
.sign-box {
  max-width:460px;
  margin:60px auto;
}
.sign-box h2 {
  text-align:center;
  margin-bottom:24px;
  color:var(--primary);
}
/* 弹窗遮罩 */
.modal-mask {
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background:rgba(0,0,0,0.5);
  display:flex;
  align-items:center;
  justify-content:center;
  z-index:999;
  display:none;
}
.modal-box {
  background:white;
  width:90%;
  max-width:700px;
  padding:24px;
  border-radius:var(--radius);
  max-height:85vh;
  overflow-y:auto;
}
.modal-header {
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom:16px;
}
.close-modal {
  cursor:pointer;
  font-size:24px;
  color:var(--gray);
}
/* Toast提示 */
.toast {
  position:fixed;
  top:24px;
  right:24px;
  padding:14px 20px;
  border-radius:8px;
  color:white;
  z-index:1000;
  transform:translateX(120%);
  transition:0.3s;
}
.toast.show {
  transform:translateX(0);
}
.toast-success {
  background:var(--success);
}
.toast-error {
  background:var(--danger);
}
/* 分页 */
.pagination {
  display:flex;
  gap:8px;
  margin-top:16px;
  justify-content:center;
}
/* 加载动画 */
.loading {
  display:inline-block;
  width:16px;
  height:16px;
  border:2px solid #fff;
  border-bottom-color:transparent;
  border-radius:50%;
  animation:rotate 1s linear infinite;
}
@keyframes rotate {
  0%{transform:rotate(0deg)}
  100%{transform:rotate(360deg)}
}
/* 表格签到列表 */
.sign-table {
  width:100%;
  border-collapse: collapse;
  margin-top:12px;
}
.sign-table th, .sign-table td {
  border:1px solid #e2e8f0;
  padding:10px;
  text-align:center;
}
.sign-table th {
  background:#f1f5f9;
}