:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --primary-light: #eef2ff;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-900: #111827;
  --radius: 12px;
  --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: #f5f7fa;
  color: var(--gray-900);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

img {
  max-width: 100%;
}

/* 登录/注册页 */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: linear-gradient(135deg, #eef2ff 0%, #f5f3ff 100%);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: #fff;
  border-radius: 24px;
  padding: 36px 28px 32px;
  box-shadow: var(--shadow);
}

.site-brand {
  text-align: center;
  margin-bottom: 28px;
}

.logo {
  width: 72px;
  height: 72px;
  line-height: 72px;
  margin: 0 auto 14px;
  background: var(--primary-light);
  border-radius: 50%;
  font-size: 36px;
}

.site-brand h1 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 6px;
}

.site-brand p {
  font-size: 14px;
  color: var(--gray-500);
}

.tabs {
  display: flex;
  background: var(--gray-100);
  border-radius: var(--radius);
  padding: 4px;
  margin-bottom: 24px;
}

.tab {
  flex: 1;
  padding: 12px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-500);
  background: transparent;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s;
}

.tab.active {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.auth-form.hidden {
  display: none;
}

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

.label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 8px;
}

.required {
  color: var(--danger);
}

.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 14px;
  color: var(--gray-500);
  font-size: 16px;
}

input[type="tel"],
input[type="text"],
input[type="password"],
input[type="number"],
textarea {
  width: 100%;
  padding: 12px 14px;
  font-size: 15px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  -webkit-appearance: none;
  font-family: inherit;
}

input[type="tel"],
input[type="text"],
input[type="password"],
input[type="number"] {
  height: 50px;
}

.input-wrap input {
  padding-left: 42px;
}

input:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

input:disabled {
  background: var(--gray-100);
  color: var(--gray-500);
}

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

.form-tip {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--gray-500);
}

.btn-primary {
  width: 100%;
  height: 50px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.btn-primary:active {
  transform: scale(0.99);
}

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

.alert {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  margin-bottom: 16px;
}

.alert-error {
  background: #fef2f2;
  color: var(--danger);
}

.alert-success {
  background: #ecfdf5;
  color: var(--success);
}

.auth-footer {
  margin-top: 20px;
  text-align: center;
  font-size: 14px;
}

/* 应用头部 */
.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  background: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  max-width: 800px;
  margin: 0 auto;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.header-inner h1 {
  font-size: 18px;
  font-weight: 700;
  flex: 1;
  text-align: center;
}

.back-link {
  font-size: 14px;
  color: var(--gray-700);
  white-space: nowrap;
}

.header-actions {
  display: flex;
  gap: 10px;
}

.header-btn {
  font-size: 13px;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 12px;
  border-radius: 20px;
  white-space: nowrap;
}

.app-main {
  flex: 1;
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
  padding: 20px 16px 40px;
}

/* 搜索 */
.search-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}

.search-bar input {
  flex: 1;
}

.search-bar button {
  padding: 0 20px;
  height: 50px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
}

.member-count {
  font-size: 13px;
  color: var(--gray-500);
  margin-bottom: 14px;
}

/* 会员列表 */
.member-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.member-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: #fff;
  padding: 14px 16px;
  border-radius: var(--radius);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  color: inherit;
  transition: transform 0.15s, box-shadow 0.15s;
}

.member-card:active {
  transform: scale(0.99);
}

.member-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--gray-100);
  flex-shrink: 0;
}

.member-info {
  flex: 1;
  min-width: 0;
}

.member-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.member-real-name {
  font-size: 13px;
  color: var(--gray-500);
  font-weight: 400;
}

.member-meta {
  font-size: 13px;
  color: var(--gray-500);
}

.arrow {
  font-size: 22px;
  color: var(--gray-300);
}

.empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--gray-500);
  font-size: 15px;
  background: #fff;
  border-radius: var(--radius);
}

/* 会员详情 */
.detail-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  overflow: hidden;
}

.detail-avatar-wrap {
  text-align: center;
  padding: 32px 20px 24px;
  background: linear-gradient(135deg, var(--primary-light) 0%, #fff 100%);
}

.detail-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  background: #fff;
  border: 4px solid #fff;
  box-shadow: var(--shadow);
  margin-bottom: 14px;
}

.detail-avatar-wrap h2 {
  font-size: 20px;
  font-weight: 700;
}

.detail-real-name {
  font-size: 14px;
  color: var(--gray-500);
  margin-top: 4px;
}

.detail-list {
  padding: 8px 0;
}

.detail-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-100);
}

.detail-item:last-child {
  border-bottom: none;
}

.detail-label {
  font-size: 14px;
  color: var(--gray-500);
  flex-shrink: 0;
  margin-right: 16px;
}

.detail-value {
  font-size: 15px;
  color: var(--gray-900);
  text-align: right;
  word-break: break-all;
}

.tel-link {
  color: var(--primary);
  font-weight: 600;
}

/* 个人中心/编辑表单 */
.profile-form {
  background: #fff;
  padding: 24px 20px;
  border-radius: var(--radius);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.avatar-upload {
  text-align: center;
  margin-bottom: 24px;
}

.avatar-upload img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--gray-100);
  border: 4px solid #fff;
  box-shadow: var(--shadow);
  display: block;
  margin: 0 auto 12px;
}

.avatar-upload-btn {
  display: inline-block;
  padding: 8px 18px;
  font-size: 14px;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: 20px;
  cursor: pointer;
}

.avatar-tip {
  font-size: 13px;
  color: var(--gray-500);
}

/* 后台表格 */
.admin-table-wrap {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 600px;
}

.admin-table th,
.admin-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--gray-100);
}

.admin-table th {
  font-weight: 600;
  color: var(--gray-700);
  background: var(--gray-50);
}

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

.action-link {
  font-size: 13px;
  margin-right: 10px;
}

.action-link.danger {
  color: var(--danger);
}

/* 响应式 */
@media (max-width: 480px) {
  .auth-card {
    padding: 28px 20px 24px;
    border-radius: 20px;
  }

  .header-inner h1 {
    font-size: 16px;
  }

  .header-btn {
    padding: 5px 10px;
    font-size: 12px;
  }

  .admin-table {
    font-size: 13px;
  }

  .admin-table th,
  .admin-table td {
    padding: 12px 14px;
  }
}