/* ===== 下载中心页样式 ===== */

.page-header {
  padding: 64px 0 32px;
  background: linear-gradient(135deg, #f5f8ff 0%, #eaf0ff 100%);
  text-align: center;
}

.page-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-1);
  margin-bottom: 12px;
}

.page-subtitle {
  font-size: 16px;
  color: var(--text-2);
}

/* Tab 切换 */
.tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--border);
}

.tab {
  padding: 12px 24px;
  font-size: 15px;
  color: var(--text-2);
  background: transparent;
  border: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  font-weight: 500;
  font-family: inherit;
}

.tab:hover { color: var(--primary); }

.tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* 下载列表 */
.download-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}

.download-loading {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 0;
  color: var(--text-3);
  font-size: 14px;
}

.download-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: all 0.2s;
}

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

.download-platform-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: 18px;
  margin-bottom: 16px;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

.download-platform-icon.ios {
  background: linear-gradient(135deg, #444 0%, #1d1d1f 100%);
}

.download-platform-icon.android {
  background: linear-gradient(135deg, #34a853 0%, #0f9d58 100%);
}

.download-platform-icon.harmony {
  background: linear-gradient(135deg, #0a59f7 0%, #004bd6 100%);
}

.download-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-1);
}

.download-version {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 4px;
}

.download-date {
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 16px;
}

.download-status {
  display: inline-block;
  margin-bottom: 16px;
}

.download-qr {
  margin: 0 auto 16px;
  width: 128px;
  height: 128px;
  background: #fff;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.download-qr canvas,
.download-qr img {
  width: 100% !important;
  height: 100% !important;
}

.download-actions {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

/* 更新日志 */
.block {
  margin-top: 64px;
}

.block-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 24px;
  text-align: center;
}

.changelog-list {
  max-width: 800px;
  margin: 0 auto;
}

.changelog-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.changelog-header {
  padding: 16px 24px;
  background: var(--bg-soft);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: background 0.2s;
}

.changelog-header:hover {
  background: var(--bg-mute);
}

.changelog-version {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-1);
}

.changelog-meta {
  font-size: 13px;
  color: var(--text-3);
  display: flex;
  gap: 12px;
  align-items: center;
}

.changelog-arrow {
  font-size: 14px;
  color: var(--text-3);
  transition: transform 0.2s;
}

.changelog-item.open .changelog-arrow {
  transform: rotate(180deg);
}

.changelog-body {
  display: none;
  padding: 16px 24px;
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.8;
  white-space: pre-wrap;
  background: #fff;
}

.changelog-item.open .changelog-body {
  display: block;
}

/* 响应式 */
@media (max-width: 1024px) {
  .download-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .page-title {
    font-size: 28px;
  }
  .tabs {
    flex-direction: column;
    align-items: stretch;
  }
  .tab {
    border-bottom: none;
    border-left: 2px solid transparent;
  }
  .tab.active {
    border-bottom: none;
    border-left-color: var(--primary);
  }
  .download-list {
    grid-template-columns: 1fr;
  }
}