/**
 * Business 广告列表页面样式
 * 遵循 ui-style-rules.md 规范
 */

/* ========== 页面头部 ========== */
.campaigns-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-6);
}

.campaigns-header__info {
  flex: 1;
}

.campaigns-header__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0 0 var(--spacing-2) 0;
}

.campaigns-header__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

.campaigns-header__actions {
  display: flex;
  gap: var(--spacing-3);
}

.campaigns-header__btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-5);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.campaigns-header__btn--primary {
  color: var(--color-text-on-primary);
  background: var(--color-primary);
  border: none;
}

.campaigns-header__btn--primary:hover {
  background: var(--color-primary-hover);
}

.campaigns-header__btn-icon {
  font-size: var(--font-size-base);
}

/* ========== 工具栏 ========== */
.campaigns-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-4);
  padding: var(--spacing-4);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
}

.campaigns-toolbar__filters {
  display: flex;
  gap: var(--spacing-3);
}

.campaigns-toolbar__select {
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  min-width: 120px;
}

.campaigns-toolbar__select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-alpha-20);
}

.campaigns-toolbar__search {
  display: flex;
  gap: var(--spacing-2);
}

.campaigns-toolbar__input {
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  min-width: 200px;
}

.campaigns-toolbar__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-alpha-20);
}

.campaigns-toolbar__search-btn {
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--font-size-base);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.campaigns-toolbar__search-btn:hover {
  border-color: var(--color-primary);
  background: var(--color-bg-secondary);
}

/* ========== 统计概览 ========== */
.campaigns-stats {
  display: flex;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-4);
  padding: var(--spacing-4);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
}

.campaigns-stats__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-3);
}

.campaigns-stats__item:not(:last-child) {
  border-right: 1px solid var(--color-border-secondary);
}

.campaigns-stats__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.campaigns-stats__value {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.campaigns-stats__value--active {
  color: var(--color-success);
}

/* ========== 广告列表 ========== */
.campaigns-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

/* 广告项 */
.campaign-item {
  display: block;
  padding: var(--spacing-4);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.campaign-item:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-md);
}

.campaign-item__main {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-3);
}

.campaign-item__info {
  flex: 1;
  min-width: 0;
}

.campaign-item__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0 0 var(--spacing-2) 0;
}

.campaign-item__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.campaign-item__meta-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
}

.campaign-item__meta-icon {
  font-size: var(--font-size-base);
}

.campaign-item__status {
  padding: var(--spacing-1) var(--spacing-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.campaign-item__status--active {
  color: var(--color-success);
  background: var(--color-success-bg);
}

.campaign-item__status--paused {
  color: var(--color-warning);
  background: var(--color-warning-bg);
}

.campaign-item__status--pending {
  color: var(--color-info);
  background: var(--color-info-bg);
}

.campaign-item__status--rejected {
  color: var(--color-error);
  background: var(--color-error-bg);
}

.campaign-item__status--completed {
  color: var(--color-text-secondary);
  background: var(--color-bg-tertiary);
}

.campaign-item__stats {
  display: flex;
  gap: var(--spacing-6);
  padding: var(--spacing-3) 0;
  border-top: 1px solid var(--color-border-secondary);
  border-bottom: 1px solid var(--color-border-secondary);
}

.campaign-item__stat {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
}

.campaign-item__stat-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

.campaign-item__stat-value {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.campaign-item__actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-2);
  margin-top: var(--spacing-3);
}

.campaign-item__action-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-base);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.campaign-item__action-btn:hover {
  border-color: var(--color-primary);
  background: var(--color-bg-tertiary);
}

/* 骨架屏 */
.campaign-item--skeleton {
  pointer-events: none;
}

.campaign-item--skeleton .campaign-item__title,
.campaign-item--skeleton .campaign-item__meta,
.campaign-item--skeleton .campaign-item__status,
.campaign-item--skeleton .campaign-item__stat {
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-sm);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.campaign-item--skeleton .campaign-item__title {
  width: 50%;
  height: 20px;
}

.campaign-item--skeleton .campaign-item__meta {
  width: 40%;
  height: 16px;
}

.campaign-item--skeleton .campaign-item__status {
  width: 60px;
  height: 24px;
}

.campaign-item--skeleton .campaign-item__stat {
  width: 80px;
  height: 40px;
}

@keyframes skeleton-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ========== 空态 ========== */
.campaigns-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-12) var(--spacing-4);
  text-align: center;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
}

.campaigns-empty__icon {
  font-size: 64px;
  margin-bottom: var(--spacing-4);
}

.campaigns-empty__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0 0 var(--spacing-2) 0;
}

.campaigns-empty__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0 0 var(--spacing-6) 0;
}

.campaigns-empty__btn {
  display: inline-flex;
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-on-primary);
  background: var(--color-primary);
  border: none;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.campaigns-empty__btn:hover {
  background: var(--color-primary-hover);
}

/* ========== 错误态 ========== */
.campaigns-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-12) var(--spacing-4);
  text-align: center;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
}

.campaigns-error__icon {
  font-size: 64px;
  color: var(--color-error);
  margin-bottom: var(--spacing-4);
}

.campaigns-error__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0 0 var(--spacing-2) 0;
}

.campaigns-error__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0 0 var(--spacing-6) 0;
}

.campaigns-error__btn {
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-on-primary);
  background: var(--color-primary);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.campaigns-error__btn:hover {
  background: var(--color-primary-hover);
}

/* ========== 分页 ========== */
.campaigns-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-2);
  margin-top: var(--spacing-6);
  padding-top: var(--spacing-6);
  border-top: 1px solid var(--color-border-secondary);
}

.campaigns-pagination__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 var(--spacing-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.campaigns-pagination__btn:hover:not(:disabled) {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.campaigns-pagination__btn--active {
  color: var(--color-text-on-primary);
  background: var(--color-primary);
  border-color: var(--color-primary);
}

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

.campaigns-pagination__ellipsis {
  padding: 0 var(--spacing-2);
  color: var(--color-text-tertiary);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .campaigns-stats {
    flex-wrap: wrap;
  }

  .campaigns-stats__item {
    flex: 1 1 calc(50% - var(--spacing-2));
  }

  .campaigns-stats__item:nth-child(2) {
    border-right: none;
  }

  .campaigns-stats__item:nth-child(1),
  .campaigns-stats__item:nth-child(2) {
    border-bottom: 1px solid var(--color-border-secondary);
    padding-bottom: var(--spacing-4);
  }

  .campaigns-stats__item:nth-child(3),
  .campaigns-stats__item:nth-child(4) {
    padding-top: var(--spacing-4);
  }
}

@media (max-width: 768px) {
  .campaigns-header {
    flex-direction: column;
    gap: var(--spacing-4);
  }

  .campaigns-header__actions {
    width: 100%;
  }

  .campaigns-header__btn {
    flex: 1;
    justify-content: center;
  }

  .campaigns-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .campaigns-toolbar__filters {
    flex-wrap: wrap;
  }

  .campaigns-toolbar__select {
    flex: 1;
    min-width: 0;
  }

  .campaigns-toolbar__search {
    width: 100%;
  }

  .campaigns-toolbar__input {
    flex: 1;
    min-width: 0;
  }

  .campaign-item__stats {
    flex-wrap: wrap;
    gap: var(--spacing-4);
  }

  .campaign-item__stat {
    flex: 1 1 calc(50% - var(--spacing-2));
  }
}