/* ============================================================
   通用样式 - 所有页面共用
   ============================================================ */

/* ===== CSS 变量 ===== */
:root {
  --primary-color: #2d8cf0;
  --primary-hover: #1a7ae0;
  --success-color: #67c23a;
  --warning-color: #e6a23c;
  --danger-color: #f56c6c;
  --info-color: #2d8cf0;
  --text-color: #333;
  --text-secondary: #606266;
  --text-light: #909399;
  --bg-color: #f0f2f5;
  --card-shadow: 0 1px 4px rgba(0,0,0,0.04);
  --border-color: #e8ecf1;
  --radius: 12px;
  --safe-top: env(safe-area-inset-top, 20px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --header-bg: #1f2a3a;
}

/* ===== 基础重置 ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, PingFang SC, 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  min-height: -webkit-fill-available;
}

/* ============================================================
   顶部导航（新增）
   ============================================================ */
.top-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--header-bg);
  color: #fff;
  padding: 12px 20px;
  flex-wrap: wrap;
}

.top-header .title {
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 0.5px;
}

.top-header .version {
  font-size: 12px;
  opacity: 0.7;
  margin-left: 6px;
}

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

.top-header .user-info {
  font-size: 14px;
  opacity: 0.9;
}

.top-header button {
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: #fff;
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 13px;
  cursor: pointer;
  transition: 0.2s;
}

.top-header button:hover {
  background: rgba(255, 255, 255, 0.2);
}

.top-header button:active {
  transform: scale(0.95);
}

.btn-logout {
  background: rgba(255, 70, 70, 0.2) !important;
}

/* ============================================================
   页面容器
   ============================================================ */
.page-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: calc(16px + var(--safe-top)) 16px calc(80px + var(--safe-bottom)) 16px;
  padding-bottom: calc(80px + var(--safe-bottom));
}

/* ===== 卡片 ===== */
.card {
  background: #fff;
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--card-shadow);
  border: 1px solid transparent;
  transition: all 0.3s;
}
.card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  border-color: var(--border-color);
  transform: translateY(-2px);
}

/* ===== 按钮 ===== */
.btn {
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  -webkit-touch-callout: none;
  user-select: none;
  min-height: 36px;
  min-width: 36px;
}
.btn:active {
  transform: scale(0.95);
}

.btn-primary {
  background: var(--primary-color);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-hover);
}
.btn-primary:active {
  background: var(--primary-hover);
}

.btn-success {
  background: var(--success-color);
  color: #fff;
}
.btn-success:hover {
  background: #5daf34;
}
.btn-success:active {
  background: #5daf34;
}

.btn-danger {
  background: var(--danger-color);
  color: #fff;
}
.btn-danger:hover {
  background: #e85a5a;
}
.btn-danger:active {
  background: #e85a5a;
}

.btn-warning {
  background: var(--warning-color);
  color: #fff;
}
.btn-warning:hover {
  background: #d98c00;
}
.btn-warning:active {
  background: #d98c00;
}

.btn-secondary {
  background: var(--bg-color);
  color: var(--text-secondary);
}
.btn-secondary:hover {
  background: #e4e7ed;
}
.btn-secondary:active {
  background: #d0d4db;
}

.btn-sm {
  padding: 4px 12px;
  font-size: 12px;
  min-height: 30px;
  min-width: 30px;
}

.btn-lg {
  padding: 12px 24px;
  font-size: 16px;
  min-height: 48px;
  min-width: 48px;
}

.btn-block {
  width: 100%;
  display: block;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

/* ===== 输入框 ===== */
.input-text {
  padding: 10px 14px;
  border: 1.5px solid #e4e7ed;
  border-radius: 8px;
  font-size: 16px;
  outline: none;
  transition: all 0.2s;
  background: #fafbfc;
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
}
.input-text:focus {
  border-color: var(--primary-color);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(45, 140, 240, 0.08);
}
.input-text::placeholder {
  color: #b0b4bb;
}
.input-text:disabled {
  background: #f5f7fa;
  cursor: not-allowed;
}

.input-text-sm {
  padding: 6px 10px;
  font-size: 13px;
}

.input-text-lg {
  padding: 14px 18px;
  font-size: 18px;
}

/* ===== 选择框 ===== */
.select-custom {
  padding: 10px 30px 10px 12px;
  border: 1.5px solid #e4e7ed;
  border-radius: 8px;
  font-size: 16px;
  outline: none;
  background: #fafbfc url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23909399' d='M6 8L1 3h10z'/%3E%3C/svg%3E") no-repeat right 10px center;
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
}
.select-custom:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(45, 140, 240, 0.08);
}

/* ===== 表格 ===== */
.table-wrap {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  overflow-x: auto;
}
.table-wrap table {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
}
.table-wrap th {
  background: #f5f7fa;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 13px;
  padding: 12px 14px;
  text-align: left;
  border-bottom: 2px solid var(--border-color);
  white-space: nowrap;
  position: sticky;
  top: 0;
  z-index: 10;
}
.table-wrap td {
  padding: 10px 14px;
  font-size: 13px;
  border-bottom: 1px solid #f0f2f5;
  vertical-align: middle;
}
.table-wrap tr:hover td {
  background: #f8faff;
}
.table-wrap .text-center {
  text-align: center;
}
.table-wrap .text-right {
  text-align: right;
}

/* ===== 状态标签 ===== */
.status-tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
}
.status-tag.pending {
  background: #fff7e6;
  color: #e6a23c;
}
.status-tag.progress {
  background: #e6f7ff;
  color: #2d8cf0;
}
.status-tag.shipped {
  background: #e6f7e6;
  color: #67c23a;
}
.status-tag.overdue {
  background: #fef0f0;
  color: #f56c6c;
}
.status-tag.urgent {
  background: #fdf0ff;
  color: #9b59b6;
}
.status-tag.recent {
  background: #e6f7e6;
  color: #67c23a;
}
.status-tag.today {
  background: #e6f7ff;
  color: #2d8cf0;
}
.status-tag.old {
  background: #f4f4f5;
  color: #909399;
}
.status-tag.very-old {
  background: #fef0f0;
  color: #f56c6c;
}

/* ===== 状态小圆点 ===== */
.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  margin-right: 4px;
}
.status-dot.green {
  background: #67c23a;
}
.status-dot.blue {
  background: #2d8cf0;
}
.status-dot.orange {
  background: #e6a23c;
}
.status-dot.red {
  background: #f56c6c;
}
.status-dot.purple {
  background: #9b59b6;
}
.status-dot.gray {
  background: #909399;
}

/* ===== 空状态 ===== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  background: #fff;
  border-radius: var(--radius);
}
.empty-state .icon {
  font-size: 48px;
  margin-bottom: 10px;
  opacity: 0.5;
}
.empty-state .text {
  font-size: 15px;
  color: var(--text-light);
}
.empty-state .sub {
  font-size: 13px;
  color: #c0c4cc;
  margin-top: 4px;
}
.empty-state .retry-btn {
  margin-top: 12px;
  padding: 10px 24px;
  border: none;
  border-radius: 6px;
  background: var(--primary-color);
  color: #fff;
  cursor: pointer;
  font-size: 14px;
  min-height: 44px;
}
.empty-state .retry-btn:hover {
  background: var(--primary-hover);
}

/* ===== 加载状态 ===== */
.loading-state {
  text-align: center;
  padding: 60px 20px;
  background: #fff;
  border-radius: var(--radius);
}
.loading-state .spinner {
  display: inline-block;
  width: 36px;
  height: 36px;
  border: 3px solid #e4e7ed;
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
.loading-state .text {
  margin-top: 10px;
  color: var(--text-light);
  font-size: 14px;
}

/* ===== 标签页 ===== */
.tabs {
  display: flex;
  gap: 0;
  margin-bottom: 16px;
  background: #fff;
  border-radius: 10px;
  padding: 4px;
  box-shadow: var(--card-shadow);
  overflow-x: auto;
}
.tabs button {
  flex: 1;
  padding: 10px 16px;
  border: none;
  background: transparent;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.25s;
  min-width: 80px;
  white-space: nowrap;
}
.tabs button:hover {
  color: var(--primary-color);
  background: #f0f7ff;
}
.tabs button.active {
  background: var(--primary-color);
  color: #fff;
  box-shadow: 0 2px 8px rgba(45, 140, 240, 0.25);
}
.tabs button .count {
  font-size: 11px;
  opacity: 0.7;
  margin-left: 4px;
}
.tabs button.active .count {
  opacity: 1;
}

/* ===== 分页 ===== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 0 4px 0;
  flex-wrap: wrap;
}
.pagination .page-info {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 0 10px;
}
.pagination button {
  padding: 6px 14px;
  border: 1px solid #e4e7ed;
  border-radius: 6px;
  background: #fff;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  transition: all 0.2s;
}
.pagination button:hover:not(:disabled) {
  background: #f0f7ff;
  border-color: var(--primary-color);
  color: var(--primary-color);
}
.pagination button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.pagination button.active {
  background: var(--primary-color);
  color: #fff;
  border-color: var(--primary-color);
}

/* ===== 模态框 ===== */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  padding: 20px;
  z-index: 999;
  overflow-y: auto;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  animation: fadeIn 0.25s ease;
}
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.modal-box {
  max-width: 600px;
  margin: 30px auto;
  background: #fff;
  border-radius: 16px;
  padding: 28px 30px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  animation: slideUp 0.3s ease;
}
@keyframes slideUp {
  from {
    transform: translateY(30px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-box .modal-title {
  font-size: 19px;
  font-weight: 600;
  color: #1a2332;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border-color);
}

.modal-box .form-group {
  margin-bottom: 14px;
}
.modal-box .form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 4px;
}
.modal-box .form-group label .required {
  color: var(--danger-color);
  margin-left: 2px;
}
.modal-box .form-group .hint {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 4px;
}

.modal-box .btn-group {
  display: flex;
  gap: 10px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}
.modal-box .btn-group button {
  padding: 10px 24px;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  flex: 1;
}
.modal-box .btn-group button:active {
  transform: scale(0.95);
}
.modal-box .btn-group .btn-submit {
  background: var(--primary-color);
  color: #fff;
}
.modal-box .btn-group .btn-submit:hover {
  background: var(--primary-hover);
}
.modal-box .btn-group .btn-cancel {
  background: var(--bg-color);
  color: var(--text-secondary);
}
.modal-box .btn-group .btn-cancel:hover {
  background: #e4e7ed;
}

/* ===== Toast 样式（由 JS 生成） ===== */
.toast-container {
  position: fixed;
  top: calc(20px + var(--safe-top));
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  pointer-events: none;
}
.toast {
  background: rgba(0, 0, 0, 0.78);
  color: #fff;
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 14px;
  animation: slideDown 0.3s ease;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  max-width: 90%;
  text-align: center;
  margin-top: 8px;
}
@keyframes slideDown {
  from {
    transform: translateY(-20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* ============================================================
   底部导航（新增 - 所有页面通用）
   ============================================================ */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #fff;
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: 6px 0 calc(6px + var(--safe-bottom));
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.08);
  z-index: 100;
  border-top: 1px solid var(--border-color);
  min-height: 64px;
  padding-bottom: calc(6px + env(safe-area-inset-bottom, 8px));
}

.bottom-nav .nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  flex: 1;
  padding: 4px 0;
  cursor: pointer;
  text-decoration: none;
  color: var(--text-light);
  font-size: 11px;
  transition: all 0.25s;
  border: none;
  background: transparent;
  min-height: 44px;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  position: relative;
}

.bottom-nav .nav-item:active {
  transform: scale(0.95);
}

.bottom-nav .nav-item .icon {
  font-size: 22px;
  line-height: 1.2;
}

.bottom-nav .nav-item .label {
  font-size: 10px;
  font-weight: 500;
}

.bottom-nav .nav-item.active {
  color: var(--primary-color);
}

.bottom-nav .nav-item.active::after {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--primary-color);
  border-radius: 0 0 3px 3px;
}

.bottom-nav .nav-item.logout-item {
  color: var(--danger-color);
}

.bottom-nav .nav-item.logout-item.active {
  color: var(--danger-color);
}

.bottom-nav .nav-item.logout-item.active::after {
  background: var(--danger-color);
}

@media (max-width: 480px) {
  .bottom-nav {
    min-height: 56px;
  }
  .bottom-nav .nav-item .icon {
    font-size: 20px;
  }
  .bottom-nav .nav-item .label {
    font-size: 9px;
  }
  .bottom-nav .nav-item.active::after {
    width: 16px;
    height: 2px;
  }
}

/* ===== 暗黑模式 ===== */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #1a1a2e;
    --border-color: #2a2a4a;
    --text-color: #e8e8e8;
    --text-secondary: #ccc;
    --text-light: #888;
    --card-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    --header-bg: #1a1a2e;
  }

  .top-header {
    background: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
  }

  .bottom-nav {
    background: #1a1a2e;
    border-top-color: var(--border-color);
  }
  .bottom-nav .nav-item {
    color: #666;
  }
  .bottom-nav .nav-item.active {
    color: #4dabf7;
  }
  .bottom-nav .nav-item.active::after {
    background: #4dabf7;
  }

  .card {
    background: #1e1e3a;
    border-color: var(--border-color);
  }

  .table-wrap {
    background: #1e1e3a;
  }
  .table-wrap th {
    background: #2a2a4a;
    color: #ccc;
  }
  .table-wrap td {
    border-color: var(--border-color);
    color: #ddd;
  }
  .table-wrap tr:hover td {
    background: #2a2a4a;
  }

  .empty-state {
    background: #1e1e3a;
  }
  .loading-state {
    background: #1e1e3a;
  }

  .tabs {
    background: #1e1e3a;
  }
  .tabs button {
    color: #888;
  }
  .tabs button:hover {
    background: #2a2a4a;
    color: var(--primary-color);
  }

  .pagination button {
    background: #1e1e3a;
    border-color: var(--border-color);
    color: #ccc;
  }
  .pagination button:hover:not(:disabled) {
    background: #2a2a4a;
  }
  .pagination button.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
  }

  .modal-box {
    background: #1e1e3a;
  }
  .modal-box .modal-title {
    color: #e8e8e8;
    border-bottom-color: var(--border-color);
  }
  .modal-box .form-group label {
    color: #ccc;
  }
  .modal-box .form-group input,
  .modal-box .form-group select,
  .modal-box .form-group textarea {
    background: #2a2a4a;
    border-color: #3a3a5a;
    color: #e8e8e8;
  }
  .modal-box .form-group input:focus,
  .modal-box .form-group select:focus,
  .modal-box .form-group textarea:focus {
    border-color: var(--primary-color);
    background: #2a2a4a;
  }
  .modal-box .btn-group .btn-cancel {
    background: #2a2a4a;
    color: #ccc;
  }

  .input-text {
    background: #2a2a4a;
    border-color: #3a3a5a;
    color: #e8e8e8;
  }
  .input-text:focus {
    border-color: var(--primary-color);
    background: #2a2a4a;
  }

  .btn-secondary {
    background: #2a2a4a;
    color: #ccc;
  }
  .btn-secondary:hover {
    background: #3a3a5a;
  }
}

/* ===== 响应式 ===== */
@media (max-width: 480px) {
  .page-container {
    padding: 12px 12px 76px 12px;
  }

  .top-header .title {
    font-size: 17px;
  }
  .top-header .actions button {
    font-size: 12px;
    padding: 4px 10px;
  }

  .modal-box {
    padding: 18px;
    margin: 15px 0;
  }

  .tabs button {
    font-size: 12px;
    padding: 8px 10px;
    min-width: 60px;
  }

  .table-wrap table {
    min-width: 500px;
  }

  .btn {
    min-height: 44px;
    min-width: 44px;
  }
}

@media (min-width: 768px) {
  .modal-box {
    max-width: 600px;
  }
}

@media (min-width: 1024px) {
  .modal-box {
    max-width: 700px;
  }
}