/* ===== Element UI Style Reset ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --el-color-primary: #409EFF;
  --el-color-primary-light-3: #79bbff;
  --el-color-primary-light-5: #a0cfff;
  --el-color-primary-light-7: #c6e2ff;
  --el-color-primary-light-9: #ecf5ff;
  --el-color-primary-dark-2: #337ecc;
  --el-color-success: #67C23A;
  --el-color-success-light-3: #95d475;
  --el-color-success-light-5: #b3e19d;
  --el-color-success-light-9: #e1f3d8;
  --el-color-warning: #E6A23C;
  --el-color-warning-light-3: #eebe77;
  --el-color-warning-light-9: #faecd8;
  --el-color-danger: #F56C6C;
  --el-color-danger-light-3: #f89898;
  --el-color-danger-light-5: #fab6b6;
  --el-color-danger-light-9: #fde2e2;
  --el-color-info: #909399;
  --el-color-info-light-3: #b1b3b8;
  --el-color-info-light-5: #c8c9cc;
  --el-color-info-light-9: #f4f4f5;
  --el-text-color-primary: #303133;
  --el-text-color-regular: #606266;
  --el-text-color-secondary: #909399;
  --el-text-color-placeholder: #a8abb2;
  --el-border-color: #dcdfe6;
  --el-border-color-light: #e4e7ed;
  --el-border-color-lighter: #ebeef5;
  --el-border-color-extra-light: #f2f6fc;
  --el-bg-color: #ffffff;
  --el-bg-color-page: #f2f3f5;
  --el-fill-color-light: #f5f7fa;
  --el-border-radius-base: 4px;
  --el-border-radius-small: 2px;
  --el-border-radius-round: 20px;
  --el-font-size-base: 14px;
  --el-font-size-small: 13px;
  --el-font-size-extra-small: 12px;
  --el-font-path: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "\5FAE\8F6F\96C5\9ED1", Arial, sans-serif;
}

body {
  font-family: var(--el-font-path);
  font-size: var(--el-font-size-base);
  color: var(--el-text-color-primary);
  background-color: var(--el-bg-color-page);
  -webkit-font-smoothing: antialiased;
}

/* ===== Page Switch ===== */
.page { display: none; }
.page.active { display: block; }

/* ===== Login Page ===== */
#login-page {
  display: none;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: #2d3a4b;
}
#login-page.active { display: flex; }

.el-login-wrapper {
  width: 100%;
  max-width: 400px;
  padding: 0 20px;
}

.el-login-card {
  background: var(--el-bg-color);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 2px 12px 0 rgba(0,0,0,.1);
}

.el-login-header {
  padding: 30px 20px 10px;
  text-align: center;
}
.el-login-header h2 {
  font-size: 22px;
  font-weight: 600;
  color: var(--el-text-color-primary);
  margin-bottom: 8px;
}
.el-login-header p {
  font-size: var(--el-font-size-small);
  color: var(--el-text-color-secondary);
}

.el-login-body {
  padding: 20px 30px 30px;
}

/* ===== Element Form ===== */
.el-form-item {
  margin-bottom: 22px;
}
.el-form-item__label {
  display: block;
  font-size: var(--el-font-size-base);
  color: var(--el-text-color-regular);
  margin-bottom: 8px;
  line-height: 1;
}
.el-form-item__content {
  position: relative;
}
.el-form-item__error {
  color: var(--el-color-danger);
  font-size: var(--el-font-size-extra-small);
  line-height: 1;
  padding-top: 4px;
  min-height: 18px;
}

/* ===== Element Input ===== */
.el-input {
  position: relative;
  display: inline-flex;
  width: 100%;
}
.el-input__inner {
  width: 100%;
  height: 32px;
  padding: 0 12px;
  font-size: var(--el-font-size-base);
  font-family: var(--el-font-path);
  color: var(--el-text-color-regular);
  background-color: var(--el-bg-color);
  border: 1px solid var(--el-border-color);
  border-radius: var(--el-border-radius-base);
  outline: none;
  transition: border-color .2s cubic-bezier(.645,.045,.355,1);
}
.el-input__inner::placeholder {
  color: var(--el-text-color-placeholder);
}
.el-input__inner:focus {
  border-color: var(--el-color-primary);
}
.el-input--small .el-input__inner {
  height: 28px;
  font-size: var(--el-font-size-small);
}
select.el-input__inner {
  cursor: pointer;
  appearance: auto;
}

/* ===== Element Button ===== */
.el-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid var(--el-border-color);
  color: var(--el-text-color-regular);
  background-color: var(--el-bg-color);
  transition: all .1s;
  outline: none;
  border-radius: var(--el-border-radius-base);
  gap: 5px;
  font-family: var(--el-font-path);
  user-select: none;
}
.el-button:hover,
.el-button:focus {
  color: var(--el-color-primary);
  border-color: var(--el-color-primary-light-7);
  background-color: var(--el-color-primary-light-9);
}
.el-button:active {
  color: var(--el-color-primary);
  border-color: var(--el-color-primary);
  outline: none;
}

/* Primary */
.el-button--primary {
  color: #fff;
  background-color: var(--el-color-primary);
  border-color: var(--el-color-primary);
}
.el-button--primary:hover,
.el-button--primary:focus {
  background-color: var(--el-color-primary-light-3);
  border-color: var(--el-color-primary-light-3);
  color: #fff;
}
.el-button--primary:active {
  background-color: var(--el-color-primary-dark-2);
  border-color: var(--el-color-primary-dark-2);
  color: #fff;
}

/* Danger */
.el-button--danger {
  color: #fff;
  background-color: var(--el-color-danger);
  border-color: var(--el-color-danger);
}
.el-button--danger:hover,
.el-button--danger:focus {
  color: #fff;
  background-color: var(--el-color-danger-light-3);
  border-color: var(--el-color-danger-light-3);
}

/* Success */
.el-button--success {
  color: #fff;
  background-color: var(--el-color-success);
  border-color: var(--el-color-success);
}
.el-button--success:hover,
.el-button--success:focus {
  color: #fff;
  background-color: var(--el-color-success-light-3);
  border-color: var(--el-color-success-light-3);
}

/* Text */
.el-button--text {
  color: var(--el-color-primary);
  border-color: transparent;
  background: transparent;
  padding-left: 0;
  padding-right: 0;
}
.el-button--text:hover {
  color: var(--el-color-primary-light-3);
}

/* Sizes */
.el-button--medium {
  height: 36px;
  padding: 0 20px;
  font-size: var(--el-font-size-base);
  border-radius: var(--el-border-radius-base);
}
.el-button--small {
  height: 28px;
  padding: 0 12px;
  font-size: var(--el-font-size-small);
  border-radius: calc(var(--el-border-radius-base) - 1px);
}
.el-button--mini {
  height: 24px;
  padding: 0 8px;
  font-size: var(--el-font-size-extra-small);
  border-radius: calc(var(--el-border-radius-base) - 1px);
}
.el-button.is-full {
  width: 100%;
}

/* ===== Element Container ===== */
.el-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Element Header ===== */
.el-header {
  height: 60px;
  background: var(--el-bg-color);
  border-bottom: 1px solid var(--el-border-color-lighter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  box-shadow: 0 1px 4px rgba(0,21,41,.08);
  z-index: 10;
}
.el-header__logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--el-text-color-primary);
}
.el-header__right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ===== Element Tag ===== */
.el-tag {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 8px;
  border-radius: var(--el-border-radius-small);
  font-size: var(--el-font-size-extra-small);
  line-height: 1;
  border: 1px solid;
  white-space: nowrap;
}
.el-tag--light {
  background-color: var(--el-color-primary-light-9);
  border-color: var(--el-color-primary-light-7);
  color: var(--el-color-primary);
}
.el-tag--success {
  background-color: var(--el-color-success-light-9);
  border-color: #e1f3d8;
  color: var(--el-color-success);
}
.el-tag--danger {
  background-color: var(--el-color-danger-light-9);
  border-color: #fde2e2;
  color: var(--el-color-danger);
}
.el-tag--warning {
  background-color: var(--el-color-warning-light-9);
  border-color: #faecd8;
  color: var(--el-color-warning);
}
.el-tag--info {
  background-color: var(--el-color-info-light-9);
  border-color: #f4f4f5;
  color: var(--el-color-info);
}

/* ===== Element Main ===== */
.el-main {
  flex: 1;
  padding: 20px;
}

/* ===== Element Tabs ===== */
.el-tabs__header {
  margin: 0 0 15px;
}
.el-tabs__nav-wrap {
  position: relative;
}
.el-tabs__nav-scroll {
  overflow: hidden;
}
.el-tabs__nav {
  display: flex;
  position: relative;
  border-bottom: 2px solid var(--el-border-color-light);
}
.el-tabs__item {
  padding: 0 20px;
  height: 40px;
  line-height: 40px;
  font-size: var(--el-font-size-base);
  font-weight: 500;
  color: var(--el-text-color-regular);
  cursor: pointer;
  position: relative;
  transition: color .3s cubic-bezier(.645,.045,.355,1);
  user-select: none;
}
.el-tabs__item:hover {
  color: var(--el-color-primary-light-3);
}
.el-tabs__item.is-active {
  color: var(--el-color-primary);
}
.el-tabs__item.is-active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background-color: var(--el-color-primary);
}

/* Tab Content */
.el-tabs__content {
  display: none;
}
.el-tabs__content.active {
  display: block;
}

/* ===== Element Card ===== */
.el-card {
  border-radius: var(--el-border-radius-base);
  border: 1px solid var(--el-border-color-lighter);
  background-color: var(--el-bg-color);
  overflow: hidden;
  color: var(--el-text-color-primary);
  transition: .3s;
  box-shadow: 0 1px 4px rgba(0,21,41,.08);
}
.el-card__header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--el-border-color-lighter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--el-font-size-base);
  font-weight: 600;
}
.el-card__header-left {
  display: flex;
  align-items: center;
  gap: 8px;
}
.el-card__header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.el-card__body {
  padding: 20px;
}

/* ===== Toolbar ===== */
.el-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 10px;
}
.el-toolbar__left {
  display: flex;
  align-items: center;
  gap: 10px;
}
.el-toolbar__right {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ===== Stat Bar ===== */
.el-stat-bar {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
  font-size: var(--el-font-size-small);
  color: var(--el-text-color-secondary);
}

/* ===== Data List ===== */
.el-data-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* Category Group */
.category-group {
  margin-bottom: 4px;
}
.category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--el-fill-color-light);
  border: 1px solid var(--el-border-color-lighter);
  border-radius: var(--el-border-radius-base);
  cursor: pointer;
  user-select: none;
  transition: background .25s;
}
.category-header:hover {
  background: var(--el-border-color-extra-light);
}
.category-header h3 {
  font-size: var(--el-font-size-base);
  font-weight: 600;
  color: var(--el-text-color-primary);
}
.category-count {
  font-size: var(--el-font-size-extra-small);
  color: var(--el-text-color-secondary);
  background: var(--el-bg-color);
  padding: 2px 10px;
  border-radius: 10px;
  border: 1px solid var(--el-border-color-lighter);
}
.category-body {
  padding: 4px 0 0 0;
}

/* Data Item - Table Row Style */
.data-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--el-bg-color);
  border-bottom: 1px solid var(--el-border-color-lighter);
  transition: background .25s;
}
.data-item:first-child {
  border-top: 1px solid var(--el-border-color-lighter);
}
.data-item:hover {
  background-color: var(--el-fill-color-light);
}

.item-info {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
  min-width: 0;
}
.item-nickname {
  font-weight: 500;
  font-size: var(--el-font-size-base);
  color: var(--el-text-color-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 300px;
}
.item-id {
  font-size: var(--el-font-size-small);
  color: var(--el-text-color-secondary);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
.item-category {
  font-size: var(--el-font-size-extra-small);
  padding: 2px 8px;
  border-radius: var(--el-border-radius-small);
  white-space: nowrap;
  background-color: var(--el-color-primary-light-9);
  border: 1px solid var(--el-color-primary-light-7);
  color: var(--el-color-primary);
}
.item-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

/* ===== Element Dialog ===== */
.el-dialog__wrapper {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  overflow: auto;
  margin: 0;
  background: rgba(0,0,0,.5);
  z-index: 2000;
  justify-content: center;
  align-items: flex-start;
  padding-top: 15vh;
}
.el-dialog__wrapper.active {
  display: flex;
}
.el-dialog {
  background: var(--el-bg-color);
  border-radius: var(--el-border-radius-base);
  box-shadow: 0 1px 3px rgba(0,0,0,.3);
  width: 500px;
  max-width: 90vw;
  position: relative;
  margin: 0 auto;
}
.el-dialog__header {
  padding: 16px 20px 10px;
}
.el-dialog__title {
  font-size: 18px;
  line-height: 1;
  color: var(--el-text-color-primary);
  font-weight: 600;
}
.el-dialog__headerbtn {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 0;
  background: transparent;
  border: none;
  outline: none;
  cursor: pointer;
  font-size: 16px;
  color: var(--el-text-color-secondary);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: color .2s, background .2s;
}
.el-dialog__headerbtn:hover {
  color: var(--el-color-primary);
  background: var(--el-color-primary-light-9);
}
.el-dialog__body {
  padding: 20px;
  color: var(--el-text-color-regular);
  font-size: var(--el-font-size-base);
}
.el-dialog__footer {
  padding: 10px 20px 16px;
  text-align: right;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ===== Element Icons (CSS-only) ===== */
.el-icon-close::before { content: '\2715'; }
.el-icon-search::before { content: '\1F50D'; font-size: 12px; }
.el-icon-plus::before { content: '+'; }
.el-icon-edit::before { content: '\270E'; }
.el-icon-delete::before { content: '\2716'; }
.el-icon-star-on::before { content: '\2605'; }

/* ===== Element Message (Toast) ===== */
#toast-container {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3000;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  pointer-events: none;
}

.el-message {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  border-radius: var(--el-border-radius-base);
  background-color: #edf2fc;
  border: 1px solid var(--el-border-color-lighter);
  color: var(--el-text-color-regular);
  font-size: var(--el-font-size-base);
  box-shadow: 0 2px 12px 0 rgba(0,0,0,.1);
  animation: el-msg-in .3s ease-out;
  pointer-events: auto;
  min-width: 280px;
  max-width: 500px;
}
.el-message--success {
  background-color: var(--el-color-success-light-9);
  border-color: #e1f3d8;
}
.el-message--success .el-message__content {
  color: var(--el-color-success);
}
.el-message--error {
  background-color: var(--el-color-danger-light-9);
  border-color: #fde2e2;
}
.el-message--error .el-message__content {
  color: var(--el-color-danger);
}
.el-message--info {
  background-color: var(--el-color-primary-light-9);
  border-color: var(--el-color-primary-light-7);
}
.el-message--info .el-message__content {
  color: var(--el-color-primary);
}
.el-message__icon {
  margin-right: 8px;
  font-size: 16px;
  flex-shrink: 0;
}
.el-message__content {
  font-size: var(--el-font-size-base);
  line-height: 1.4;
}

@keyframes el-msg-in {
  0% { transform: translateY(-100%); opacity: 0; }
  100% { transform: translateY(0); opacity: 1; }
}

/* ===== Empty State ===== */
.el-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 0;
}
.el-empty__image {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  color: var(--el-text-color-placeholder);
  margin-bottom: 8px;
}
.el-empty__description {
  color: var(--el-text-color-secondary);
  font-size: var(--el-font-size-base);
}

/* ===== Confirm Box ===== */
.el-msgbox {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 4000;
  background: rgba(0,0,0,.5);
}
.el-msgbox__content {
  background: var(--el-bg-color);
  border-radius: var(--el-border-radius-base);
  padding: 24px;
  max-width: 420px;
  width: 90%;
  box-shadow: 0 2px 12px 0 rgba(0,0,0,.1);
}
.el-msgbox__message {
  font-size: var(--el-font-size-base);
  color: var(--el-text-color-primary);
  margin-bottom: 20px;
  line-height: 1.5;
}
.el-msgbox__btns {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .el-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .el-toolbar__left, .el-toolbar__right {
    flex-wrap: wrap;
  }
  .data-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .item-info {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .item-nickname {
    max-width: none;
  }
  .el-dialog {
    width: 95vw;
  }
}