/* 报名系统通用样式 */
:root {
  --primary: #4f6df5;
  --primary-dark: #3f57c4;
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --danger: #ef4444;
  --success: #16a34a;
  --warning: #f59e0b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui,
               sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}

.page-title {
  font-size: 26px;
  font-weight: 600;
  margin: 0 0 24px;
  text-align: center;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

/* 表单 */
.form-group { margin-bottom: 18px; }

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
}

.form-group label .req { color: var(--danger); margin-left: 2px; }

.form-group input,
.form-group select {
  width: 100%;
  padding: 10px 12px;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 109, 245, 0.15);
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  background: var(--primary);
  color: #fff;
  transition: background 0.15s;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn:disabled { background: #9ca3af; cursor: not-allowed; }

.btn-secondary {
  background: #fff;
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover { background: #f9fafb; }

.btn-success { background: var(--success); }
.btn-success:hover { background: #138a3e; }

.btn-warning { background: var(--warning); }
.btn-warning:hover { background: #d97706; }

.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #c93434; }

.btn-sm { padding: 5px 12px; font-size: 13px; }

.form-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 8px;
}

/* 提示消息 */
.alert {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 16px;
}
.alert-error { background: #fee2e2; color: #991b1b; }
.alert-success { background: #dcfce7; color: #166534; }

/* 成功页 */
.success-box { text-align: center; padding: 24px 0; }
.success-box .icon {
  font-size: 48px;
  color: var(--success);
  margin-bottom: 12px;
}

/* 后台布局 */
.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.admin-header h1 { margin: 0; font-size: 22px; }

.toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 16px;
}
.toolbar form { display: flex; gap: 8px; align-items: center; flex: 1; }
.toolbar input[type="text"],
.toolbar select {
  padding: 8px 10px;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
}

.stats {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.stats a {
  padding: 6px 12px;
  border-radius: 16px;
  font-size: 13px;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.stats a.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* 表格 */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th, td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

th {
  background: #f9fafb;
  font-weight: 600;
  color: var(--text-muted);
}

tr:last-child td { border-bottom: none; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}
.badge-pending { background: #fef3c7; color: #92400e; }
.badge-approved { background: #dcfce7; color: #166534; }
.badge-rejected { background: #fee2e2; color: #991b1b; }

.row-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.empty {
  padding: 32px;
  text-align: center;
  color: var(--text-muted);
}

/* 登录页 */
.login-box { max-width: 360px; margin: 60px auto; }
.login-box h1 { text-align: center; margin: 0 0 24px; }

.login-link {
  text-align: center;
  margin-top: 20px;
  font-size: 13px;
  color: var(--text-muted);
}

@media (max-width: 600px) {
  .admin-header { flex-direction: column; align-items: stretch; }
  .container { padding: 20px 12px 40px; }
  th, td { padding: 8px; }
}