/* ============================================
   短链兽 - 全局样式
   ============================================ */

:root {
  --primary: #3B82F6;
  --primary-hover: #2563EB;
  --primary-light: #EFF6FF;
  --danger: #EF4444;
  --danger-hover: #DC2626;
  --success: #10B981;
  --warning: #F59E0B;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  --white: #FFFFFF;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
  --radius: 8px;
  --radius-lg: 12px;
  --transition: 0.2s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  color: var(--gray-800);
  background: var(--gray-50);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ============================================
   按钮
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-secondary {
  background: var(--gray-100);
  color: var(--gray-700);
  border-color: var(--gray-200);
}
.btn-secondary:hover {
  background: var(--gray-200);
}

.btn-outline {
  background: transparent;
  color: var(--gray-700);
  border-color: var(--gray-300);
}
.btn-outline:hover {
  background: var(--gray-100);
  border-color: var(--gray-400);
}

.btn-danger {
  background: var(--danger);
  color: var(--white);
  border-color: var(--danger);
}
.btn-danger:hover {
  background: var(--danger-hover);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ============================================
   表单
   ============================================ */

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 6px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  font-size: 14px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--gray-800);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  font-family: inherit;
}

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

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

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

.form-hint {
  font-size: 12px;
  color: var(--gray-500);
  margin-top: 4px;
}

.form-error {
  font-size: 12px;
  color: var(--danger);
  margin-top: 4px;
}

/* ============================================
   头部导航
   ============================================ */

.header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--gray-900);
  font-weight: 700;
  font-size: 20px;
  cursor: pointer;
}

.logo-icon {
  flex-shrink: 0;
}

.nav {
  display: flex;
  gap: 4px;
}

.nav-link {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-600);
  text-decoration: none;
  border-radius: var(--radius);
  transition: all var(--transition);
  cursor: pointer;
}

.nav-link:hover {
  background: var(--gray-100);
  color: var(--gray-900);
}

.nav-link.active {
  background: var(--primary-light);
  color: var(--primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 8px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  flex-shrink: 0;
}

.user-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-700);
}

/* ============================================
   登录页
   ============================================ */

.login-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: calc(100vh - 160px);
  padding: 20px;
}

.login-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 440px;
  overflow: hidden;
}

.login-header {
  text-align: center;
  padding: 40px 32px 24px;
}

.login-logo {
  margin-bottom: 16px;
}

.login-header h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 6px;
}

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

.login-form {
  padding: 0 32px 32px;
}

.login-submit {
  width: 100%;
  margin-top: 8px;
}

.login-switch {
  text-align: center;
  margin-top: 20px;
  font-size: 14px;
  color: var(--gray-500);
}

.login-switch a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  margin-left: 4px;
}

.login-switch a:hover {
  text-decoration: underline;
}

/* ============================================
   用户中心
   ============================================ */

.user-tabs {
  display: flex;
  gap: 4px;
  background: var(--gray-100);
  padding: 4px;
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
  overflow-x: auto;
}

.user-tab {
  padding: 10px 20px;
  border: none;
  background: transparent;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-600);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}

.user-tab:hover {
  color: var(--gray-900);
  background: var(--gray-200);
}

.user-tab.active {
  background: var(--white);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.user-tab-content {
  min-height: 300px;
}

/* 个人信息 */
.profile-info {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.profile-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #60A5FA);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  flex-shrink: 0;
}

.profile-details {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.profile-row {
  display: flex;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--gray-100);
}

.profile-row:last-child {
  border-bottom: none;
}

.profile-label {
  width: 90px;
  font-size: 13px;
  color: var(--gray-500);
  flex-shrink: 0;
}

.profile-value {
  font-size: 14px;
  color: var(--gray-800);
  font-weight: 500;
}

@media (max-width: 480px) {
  .profile-info {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .profile-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }
  .profile-label {
    width: auto;
  }
}

/* ============================================
   响应式补充
   ============================================ */

@media (max-width: 480px) {
  .login-card {
    border-radius: 0;
    border: none;
    box-shadow: none;
  }
  .login-header {
    padding: 24px 20px 16px;
  }
  .login-form {
    padding: 0 20px 24px;
  }
  .user-name {
    display: none;
  }
}

/* ============================================
   主内容区
   ============================================ */

.main {
  min-height: calc(100vh - 60px);
  padding: 32px 0;
}

.page {
  display: none;
}

.page.active {
  display: block;
}

.page-header {
  margin-bottom: 28px;
}

.page-header h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 6px;
}

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

/* ============================================
   卡片
   ============================================ */

.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h3 {
  font-size: 16px;
  font-weight: 600;
}

.card-body {
  padding: 20px;
}

.card-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--gray-200);
}

/* ============================================
   统计卡片网格
   ============================================ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.stat-card .stat-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 12px;
}

.stat-card .stat-icon.blue { background: var(--primary-light); color: var(--primary); }
.stat-card .stat-icon.green { background: #ECFDF5; color: var(--success); }
.stat-card .stat-icon.orange { background: #FFFBEB; color: var(--warning); }
.stat-card .stat-icon.red { background: #FEF2F2; color: var(--danger); }

.stat-card .stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.2;
}

.stat-card .stat-label {
  font-size: 13px;
  color: var(--gray-500);
  margin-top: 4px;
}

/* ============================================
   表格
   ============================================ */

.table-container {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

table th,
table td {
  padding: 12px 16px;
  text-align: left;
  font-size: 14px;
}

table th {
  background: var(--gray-50);
  color: var(--gray-600);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--gray-200);
  white-space: nowrap;
}

table td {
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-700);
}

table tbody tr {
  transition: background var(--transition);
}

table tbody tr:hover {
  background: var(--gray-50);
}

.table-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}
.table-link:hover {
  text-decoration: underline;
}

.table-actions {
  display: flex;
  gap: 8px;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 100px;
}

.badge-direct {
  background: var(--primary-light);
  color: var(--primary);
}

.badge-random {
  background: #FEF3C7;
  color: #D97706;
}

/* ============================================
   分页
   ============================================ */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 20px;
}

.pagination .page-btn {
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--gray-600);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.pagination .page-btn:hover {
  background: var(--gray-100);
  border-color: var(--gray-300);
}

.pagination .page-btn.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.pagination .page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pagination .page-info {
  font-size: 13px;
  color: var(--gray-500);
  padding: 0 8px;
}

/* ============================================
   搜索框
   ============================================ */

.search-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}

.search-bar .form-input {
  max-width: 400px;
}

/* ============================================
   弹窗
   ============================================ */

.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 200;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

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

.modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 18px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--gray-400);
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: color var(--transition);
}

.modal-close:hover {
  color: var(--gray-600);
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--gray-200);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.token-hint {
  margin-top: 16px;
  padding: 12px;
  background: var(--primary-light);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--primary);
}

.token-hint p {
  margin: 0;
}

/* ============================================
   创建链接表单
   ============================================ */

.create-form {
  max-width: 680px;
}

.url-inputs-list {
  margin-bottom: 12px;
}

.url-input-row {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}

.url-input-row .form-input {
  flex: 1;
}

.url-input-row .btn-remove-url {
  flex-shrink: 0;
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--gray-500);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: all var(--transition);
}

.btn-icon:hover {
  background: var(--gray-100);
  color: var(--gray-700);
}

.btn-icon.danger:hover {
  background: #FEF2F2;
  color: var(--danger);
  border-color: var(--danger);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 640px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Toast 消息
   ============================================ */

.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  font-size: 14px;
  font-weight: 500;
  animation: slideIn 0.3s ease;
  max-width: 400px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toast.success {
  background: #ECFDF5;
  color: #065F46;
  border: 1px solid #A7F3D0;
}

.toast.error {
  background: #FEF2F2;
  color: #991B1B;
  border: 1px solid #FECACA;
}

.toast.info {
  background: var(--primary-light);
  color: #3730A3;
  border: 1px solid #C7D2FE;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* ============================================
   加载状态
   ============================================ */

.loading {
  text-align: center;
  padding: 40px;
  color: var(--gray-400);
}

.loading::after {
  content: "";
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-left: 8px;
  vertical-align: middle;
}

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

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--gray-400);
}

.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
  color: var(--gray-300);
}

.empty-state h3 {
  font-size: 16px;
  color: var(--gray-600);
  margin-bottom: 4px;
}

.empty-state p {
  font-size: 14px;
  color: var(--gray-400);
}

/* ============================================
   首页特色区域
   ============================================ */

.hero {
  text-align: center;
  padding: 60px 20px;
}

.hero h1 {
  font-size: 40px;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.hero h1 span {
  color: var(--primary);
}

.hero p {
  font-size: 18px;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto 32px;
}

.hero .hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  padding: 28px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-card .feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 24px;
}

.feature-card .feature-icon.blue { background: var(--primary-light); }
.feature-card .feature-icon.green { background: #ECFDF5; }
.feature-card .feature-icon.orange { background: #FFFBEB; }

.feature-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

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

/* ============================================
   确认弹窗
   ============================================ */

.confirm-modal .modal-body p {
  font-size: 15px;
  color: var(--gray-600);
  line-height: 1.6;
}

.confirm-modal .modal-body strong {
  color: var(--gray-900);
}

/* ============================================
   响应式
   ============================================ */

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 0;
  }

  .nav {
    order: 3;
    width: 100%;
    margin-top: 12px;
    overflow-x: auto;
  }

  .hero h1 {
    font-size: 28px;
  }

  .hero p {
    font-size: 15px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .search-bar {
    flex-direction: column;
  }

  .search-bar .form-input {
    max-width: 100%;
  }

  table th:nth-child(3),
  table td:nth-child(3) {
    display: none;
  }

  table th:nth-child(5),
  table td:nth-child(5) {
    display: none;
  }
}