/* ========== CSS变量与全局 ========== */
:root {
  --primary: #0a2463;
  --primary-light: #1e3a7a;
  --primary-dark: #061539;
  --accent: #3e92cc;
  --accent-light: #5ba8d9;
  --success: #1a7a4c;
  --danger: #c0392b;
  --warning: #e67e22;
  --bg: #f0f4f8;
  --bg-card: #ffffff;
  --text: #1a1a2e;
  --text-light: #5a6377;
  --border: #d1dbe6;
  --shadow: 0 2px 12px rgba(10, 36, 99, 0.08);
  --radius: 12px;
  --radius-sm: 8px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

/* ========== 顶部横幅 ========== */
.hero-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, var(--accent) 100%);
  color: #fff;
  padding: 40px 20px 36px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 70%, rgba(62, 146, 204, 0.15) 0%, transparent 50%);
  animation: shimmer 8s ease-in-out infinite alternate;
}

@keyframes shimmer {
  from { transform: rotate(0deg); }
  to { transform: rotate(5deg); }
}

.hero-banner h1 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
  position: relative;
  letter-spacing: 2px;
}

.hero-banner .subtitle {
  font-size: 15px;
  opacity: 0.9;
  position: relative;
  margin-bottom: 6px;
}

.hero-banner .org {
  font-size: 13px;
  opacity: 0.75;
  position: relative;
}

.hero-icon {
  font-size: 42px;
  margin-bottom: 12px;
  position: relative;
}

/* ========== 价格标签 ========== */
.price-tag {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 20px;
  padding: 6px 20px;
  margin-top: 14px;
  font-size: 18px;
  font-weight: 600;
  position: relative;
}

.price-tag .amount {
  color: #ffd700;
  font-size: 24px;
}

/* ========== 容器 ========== */
.container {
  max-width: 580px;
  margin: 0 auto;
  padding: 20px 16px 40px;
}

/* ========== 表单卡片 ========== */
.form-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px 20px;
  margin-bottom: 16px;
}

.form-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--bg);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 6px;
}

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

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--text);
  background: #fafbfd;
  transition: border-color 0.2s, box-shadow 0.2s;
  -webkit-appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(62, 146, 204, 0.12);
  background: #fff;
}

.form-input.error {
  border-color: var(--danger);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

/* 单选按钮组 */
.radio-group {
  display: flex;
  gap: 12px;
}

.radio-option {
  flex: 1;
  position: relative;
}

.radio-option input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.radio-option label {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  background: #fafbfd;
  text-align: center;
}

.radio-option input:checked + label {
  border-color: var(--accent);
  background: rgba(62, 146, 204, 0.08);
  color: var(--accent);
  font-weight: 600;
}

/* ========== 套餐选项 ========== */
.package-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.package-option {
  position: relative;
}

.package-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.package-label {
  display: block;
  padding: 14px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  background: #fafbfd;
}

.package-option input:checked + .package-label {
  border-color: var(--accent);
  background: rgba(62, 146, 204, 0.06);
  box-shadow: 0 0 0 3px rgba(62, 146, 204, 0.1);
}

.package-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.package-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.package-price {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
}

.package-desc {
  font-size: 13px;
  color: var(--text-light);
}

.package-option input:checked + .package-label .package-name {
  color: var(--accent);
}

/* ========== 提交按钮 ========== */
.btn-submit {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  letter-spacing: 2px;
}

.btn-submit:hover {
  opacity: 0.92;
}

.btn-submit:active {
  transform: scale(0.98);
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ========== 成功页 ========== */
.success-page {
  display: none;
  text-align: center;
  padding: 40px 20px;
}

.success-icon {
  font-size: 64px;
  margin-bottom: 16px;
}

.success-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--success);
  margin-bottom: 8px;
}

.success-desc {
  font-size: 15px;
  color: var(--text-light);
  margin-bottom: 24px;
}

.success-details {
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: left;
  margin-bottom: 24px;
}

.success-details .detail-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}

.success-details .detail-row:last-child {
  border-bottom: none;
}

.detail-label {
  color: var(--text-light);
}

.detail-value {
  font-weight: 500;
}

.btn-back {
  display: inline-block;
  padding: 10px 32px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 15px;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn-back:hover {
  opacity: 0.9;
}

/* ========== 底部信息 ========== */
.footer-info {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-top: 16px;
}

.footer-info h4 {
  font-size: 14px;
  color: var(--primary);
  margin-bottom: 10px;
}

.footer-info p {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 4px;
  line-height: 1.7;
}

/* ========== 管理员登录 ========== */
.admin-login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 20px;
}

.login-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  padding: 40px 28px;
  width: 100%;
  max-width: 380px;
  text-align: center;
}

.login-card .login-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.login-card h2 {
  font-size: 20px;
  color: var(--primary);
  margin-bottom: 24px;
}

.login-card .form-input {
  margin-bottom: 16px;
}

.btn-login {
  width: 100%;
  padding: 12px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-login:hover {
  background: var(--primary-light);
}

.login-error {
  color: var(--danger);
  font-size: 13px;
  margin-top: 10px;
  display: none;
}

/* ========== 管理后台 ========== */
.admin-header {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.admin-header h2 {
  font-size: 18px;
  font-weight: 600;
}

.btn-logout {
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-logout:hover {
  background: rgba(255, 255, 255, 0.25);
}

.admin-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 16px 40px;
}

/* 统计卡片 */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  box-shadow: var(--shadow);
}

.stat-number {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
}

.stat-label {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 4px;
}

/* 工具栏 */
.toolbar {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.search-box {
  flex: 1;
  min-width: 180px;
  padding: 9px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  background: var(--bg-card);
}

.search-box:focus {
  outline: none;
  border-color: var(--accent);
}

.btn-action {
  padding: 9px 16px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.2s;
  white-space: nowrap;
}

.btn-action:hover {
  opacity: 0.85;
}

.btn-export {
  background: var(--success);
  color: #fff;
}

.btn-refresh {
  background: var(--accent);
  color: #fff;
}

/* 表格 */
.table-wrapper {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table thead {
  background: var(--primary);
  color: #fff;
}

.data-table th {
  padding: 12px 10px;
  text-align: left;
  font-weight: 500;
  white-space: nowrap;
}

.data-table td {
  padding: 10px;
  border-bottom: 1px solid var(--bg);
  vertical-align: middle;
}

.data-table tbody tr:hover {
  background: rgba(62, 146, 204, 0.04);
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 500;
}

.badge-yes {
  background: rgba(26, 122, 76, 0.1);
  color: var(--success);
}

.badge-no {
  background: rgba(90, 99, 119, 0.1);
  color: var(--text-light);
}

.btn-edit,
.btn-delete {
  padding: 4px 10px;
  border: none;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  margin-right: 4px;
  transition: opacity 0.2s;
}

.btn-edit {
  background: var(--accent);
  color: #fff;
}

.btn-delete {
  background: var(--danger);
  color: #fff;
}

.btn-edit:hover,
.btn-delete:hover {
  opacity: 0.8;
}

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-light);
}

.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

/* 模态框 */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 24px;
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.modal-header h3 {
  font-size: 18px;
  color: var(--primary);
}

.btn-close-modal {
  width: 32px;
  height: 32px;
  border: none;
  background: var(--bg);
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.btn-confirm {
  flex: 1;
  padding: 10px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 15px;
  cursor: pointer;
}

.btn-cancel {
  flex: 1;
  padding: 10px;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  cursor: pointer;
}

/* Toast提示 */
.toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  z-index: 9999;
  transition: transform 0.3s ease;
  white-space: nowrap;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--accent); }

/* ========== 响应式 ========== */
@media (max-width: 480px) {
  .hero-banner h1 {
    font-size: 22px;
  }

  .hero-banner {
    padding: 30px 16px 28px;
  }

  .form-card {
    padding: 20px 16px;
  }

  .stats-row {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }

  .stat-card {
    padding: 12px 8px;
  }

  .stat-number {
    font-size: 22px;
  }

  .toolbar {
    flex-direction: column;
  }

  .data-table {
    font-size: 12px;
  }

  .data-table th,
  .data-table td {
    padding: 8px 6px;
  }
}

/* 加载动画 */
.loading-spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}