桌面端下载器调优：任务列表信息层级与操作区重排

- 统一 theme.css 视觉变量与卡片、状态标签样式
- DashBoard 与 Side 的任务行重排：状态标签与进度对齐，排序/显示条件更明确
- 新增 AppIcon 图标组件，store 同步空名短标题修复

src/styles/theme.css

@@ -1,55 +1,100 @@
-/* ========== CSS Custom Properties ========== */
+/* ========== Design Tokens ========== */
 :root {
-  --bg-body: #f0f2f5;
+  /* Neutrals: warm-tinted grey, keeps the UI quiet on long sessions. */
+  --bg-body: #f5f5f4;
   --bg-surface: #ffffff;
   --bg-card: #ffffff;
-  --bg-hover: #f5f7fa;
+  --bg-hover: #f2f2f0;
+  --bg-sunken: #fafaf9;
 
-  --text-primary: #1d2129;
-  --text-secondary: #86909c;
-  --text-disabled: #c9cdd4;
+  --text-primary: #1f2328;
+  --text-secondary: #6b7280;
+  --text-disabled: #c2c6cd;
 
-  --border-color: #e5e6eb;
+  --border-color: #e4e4e2;
+  --border-strong: #d5d6d3;
   --border-radius: 8px;
-  --border-radius-sm: 4px;
+  --border-radius-sm: 6px;
 
-  --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.08);
-  --shadow-elevated: 0 4px 16px rgba(0, 0, 0, 0.12);
+  /* Accent: one blue, used for primary actions and progress only. */
+  --accent: #2563eb;
+  --accent-hover: #1d4ed8;
+  --accent-soft: #eff4ff;
 
-  --transition-fast: 0.2s ease;
-  --transition-normal: 0.3s ease;
+  /* Status colours keep state readable without shouting. */
+  --status-success: #15803d;
+  --status-success-soft: #eaf7ee;
+  --status-warning: #b45309;
+  --status-warning-soft: #fdf3e3;
+  --status-info: #1d4ed8;
+  --status-info-soft: #eaf1fe;
+  --status-danger: #b42318;
+  --status-danger-soft: #fdeceb;
+
+  --shadow-card: 0 1px 2px rgba(16, 24, 40, 0.04), 0 1px 3px rgba(16, 24, 40, 0.06);
+  --shadow-elevated: 0 8px 24px rgba(16, 24, 40, 0.12);
+
+  --transition-fast: 0.15s ease;
+  --transition-normal: 0.25s ease;
 }
 
 html.dark {
-  --bg-body: #1a1a2e;
-  --bg-surface: #16213e;
-  --bg-card: #1a1a2e;
-  --bg-hover: #1f2b47;
+  --bg-body: #12141a;
+  --bg-surface: #191c23;
+  --bg-card: #191c23;
+  --bg-hover: #22262f;
+  --bg-sunken: #15181e;
 
-  --text-primary: #e5e6eb;
-  --text-secondary: #8b95a5;
-  --text-disabled: #4e5969;
+  --text-primary: #e8eaee;
+  --text-secondary: #9aa3b2;
+  --text-disabled: #565d69;
 
-  --border-color: #2c3e50;
-  --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.3);
-  --shadow-elevated: 0 4px 16px rgba(0, 0, 0, 0.4);
+  --border-color: #2a2f3a;
+  --border-strong: #363c49;
+
+  --accent: #3b82f6;
+  --accent-hover: #60a5fa;
+  --accent-soft: #1c2534;
+
+  --status-success: #4ade80;
+  --status-success-soft: #16281d;
+  --status-warning: #fbbf24;
+  --status-warning-soft: #2a2113;
+  --status-info: #60a5fa;
+  --status-info-soft: #172234;
+  --status-danger: #f87171;
+  --status-danger-soft: #2b1a1a;
+
+  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.4);
+  --shadow-elevated: 0 8px 24px rgba(0, 0, 0, 0.5);
 }
 
 /* ========== Global Base ========== */
+* {
+  box-sizing: border-box;
+}
+
+html,
+body,
+#app {
+  height: 100%;
+}
+
 body {
   margin: 0;
   padding: 0;
   background-color: var(--bg-body);
   color: var(--text-primary);
-  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
-  font-size: 16px;
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
+    "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
+  font-size: 14px;
+  line-height: 1.5;
+  -webkit-font-smoothing: antialiased;
   transition: background-color var(--transition-normal), color var(--transition-normal);
 }
 
 #app {
-  min-height: 100vh;
-  background-color: var(--bg-body);
-  transition: background-color var(--transition-normal);
+  min-height: 100%;
 }
 
 /* ========== Auth Screen ========== */
@@ -60,116 +105,529 @@ body {
   display: flex;
   justify-content: center;
   align-items: center;
+  padding: 24px;
   background: var(--bg-body);
 }
 
 .auth-card {
   background: var(--bg-surface);
-  border-radius: 16px;
+  border: 1px solid var(--border-color);
+  border-radius: 12px;
   box-shadow: var(--shadow-elevated);
-  padding: 56px 48px 44px;
-  width: 440px;
-  max-width: 90vw;
-  text-align: center;
+  padding: 40px 36px 32px;
+  width: 400px;
+  max-width: 100%;
 }
 
-.auth-card h1 {
-  margin: 0 0 8px;
-  font-size: 32px;
+.auth-brand {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  margin-bottom: 24px;
+}
+
+.auth-brand .auth-mark {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 32px;
+  height: 32px;
+  border-radius: 8px;
+  background: var(--accent);
+  color: #fff;
+  font-size: 15px;
   font-weight: 700;
+  flex: none;
+}
+
+.auth-brand .auth-name {
+  font-size: 17px;
+  font-weight: 600;
   color: var(--text-primary);
 }
 
+.auth-card h1 {
+  margin: 0 0 6px;
+  font-size: 20px;
+  font-weight: 600;
+  color: var(--text-primary);
+  text-align: left;
+}
+
 .auth-card .auth-subtitle {
-  margin: 0 0 36px;
-  font-size: 15px;
+  margin: 0 0 24px;
+  font-size: 13px;
   color: var(--text-secondary);
+  text-align: left;
 }
 
 .auth-card .auth-form {
   display: flex;
   flex-direction: column;
-  gap: 18px;
+  gap: 14px;
+}
+
+.auth-card .auth-form .el-checkbox {
+  height: auto;
 }
 
 .auth-card .auth-btn {
   width: 100%;
   font-size: 15px;
-  padding: 12px 0;
+  margin-top: 4px;
 }
 
-/* ========== Dashboard Grid ========== */
-.dashboard {
-  padding: 24px;
-  display: grid;
-  grid-template-columns: repeat(2, 1fr);
-  gap: 16px;
-  height: 100%;
+/* ========== Page Shell ========== */
+.app-layout {
+  height: 100vh;
   overflow: hidden;
-  box-sizing: border-box;
+}
+
+.side-area {
+  background: var(--bg-surface);
+  border-right: 1px solid var(--border-color);
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+
+.main-area {
+  padding: 0;
+  overflow-y: auto;
+  overflow-x: hidden;
+  background-color: var(--bg-body);
+}
+
+.section-title {
+  margin: 0;
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--text-secondary);
+  letter-spacing: 0.04em;
+  text-transform: uppercase;
+}
+
+/* ========== Task List (left column) ========== */
+.scroll-panel {
+  flex: 1;
+  min-height: 0;
+  display: flex;
+  flex-direction: column;
+  padding: 16px 16px 0;
+  overflow: hidden;
+}
+
+.panel-head {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+  padding-bottom: 12px;
+  flex: none;
+}
+
+.panel-head .head-meta {
+  font-size: 12px;
+  color: var(--text-secondary);
+  white-space: nowrap;
+}
+
+.panel-head .panel-head-spacer {
+  flex: 1;
+  min-width: 8px;
+}
+
+.table-scroll {
+  flex: 1;
+  min-height: 0;
+}
+
+.task-table {
+  width: 100%;
+}
+
+.task-table .el-table__cell {
+  padding: 10px 0;
+}
+
+.task-table .el-table__body-wrapper,
+.task-table .el-table__header-wrapper {
+  overflow-x: hidden;
+}
+
+.task-table .cell {
+  padding-left: 10px;
+  padding-right: 10px;
+}
+
+.task-name {
+  font-size: 14px;
+  color: var(--text-primary);
+  line-height: 1.45;
+  word-break: break-word;
+  /* Two-line clamp keeps every row the same height for easy scanning. */
+  display: -webkit-box;
+  -webkit-line-clamp: 2;
+  -webkit-box-orient: vertical;
+  overflow: hidden;
+}
+
+.task-size {
+  display: block;
+  margin-top: 2px;
+  font-size: 12px;
+  color: var(--text-secondary);
+}
+
+.row-actions {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+  align-items: center;
+}
+
+.status-pill {
+  display: inline-flex;
+  align-items: center;
+  height: 22px;
+  padding: 0 8px;
+  border-radius: 999px;
+  font-size: 12px;
+  font-weight: 500;
+  white-space: nowrap;
+}
+
+.status-pill.is-done {
+  color: var(--status-success);
+  background: var(--status-success-soft);
+}
+
+.status-pill.is-running {
+  color: var(--status-info);
+  background: var(--status-info-soft);
+}
+
+.status-pill.is-waiting {
+  color: var(--status-warning);
+  background: var(--status-warning-soft);
+}
+
+.state-cell {
+  display: flex;
+  flex-direction: column;
+  align-items: flex-start;
+  gap: 5px;
+}
+
+.state-cell .el-progress {
+  width: 100%;
+}
+
+.state-cell .progress-value {
+  font-size: 12px;
+  color: var(--text-secondary);
+  font-variant-numeric: tabular-nums;
+}
+
+.detail-info {
+  display: grid;
+  grid-template-columns: 84px 1fr;
+  gap: 4px 12px;
+  padding: 10px 12px 12px 44px;
+  font-size: 13px;
+  line-height: 1.7;
+}
+
+.detail-info dt {
+  color: var(--text-secondary);
+}
+
+.detail-info dd {
+  margin: 0;
+  color: var(--text-primary);
+  word-break: break-all;
+}
+
+.detail-actions {
+  grid-column: 1 / -1;
+  padding-top: 8px;
+}
+
+/* ========== Toolbar under the list ========== */
+.list-toolbar {
+  flex: none;
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: 8px;
+  padding: 12px 0 16px;
+  margin-top: 12px;
+  border-top: 1px solid var(--border-color);
+}
+
+.list-toolbar .toolbar-spacer {
+  flex: 1;
+  min-width: 8px;
+}
+
+.pager {
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+}
+
+.pager .el-button + .el-button {
+  margin-left: 0;
+}
+
+.pager-readout {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  margin: 0 6px;
+  font-size: 13px;
+  color: var(--text-secondary);
+  font-variant-numeric: tabular-nums;
+}
+
+.pager-readout .page-total {
+  white-space: nowrap;
+}
+
+button.page-current {
+  min-width: 34px;
+  height: 24px;
+  padding: 0 6px;
+  border: 1px solid var(--border-color);
+  border-radius: var(--border-radius-sm);
+  background: var(--bg-surface);
+  color: var(--text-primary);
+  font-size: 13px;
+  font-weight: 600;
+  font-family: inherit;
+  font-variant-numeric: tabular-nums;
+  cursor: pointer;
+  transition: border-color var(--transition-fast), color var(--transition-fast);
+}
+
+button.page-current:hover {
+  border-color: var(--accent);
+  color: var(--accent);
+}
+
+.page-input {
+  width: 56px;
+}
+
+/* Icon-only row actions keep the operation column narrow. */
+.row-actions .el-button.is-circle,
+.row-actions .el-button {
+  width: 32px;
+  height: 32px;
+  padding: 0;
+}
+
+.row-actions .el-button + .el-button {
+  margin-left: 0;
+}
+
+.row-actions .el-button.is-collected {
+  color: var(--status-warning);
+  border-color: var(--status-warning);
+  background: var(--status-warning-soft);
+}
+
+/* ========== Main column ========== */
+.dashboard {
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+  width: 100%;
+  max-width: 1100px;
+  margin: 0 auto;
+  padding: 20px;
+}
+
+.dashboard-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
+  gap: 16px;
+  align-items: start;
 }
 
 .control-card {
   background: var(--bg-card);
+  border: 1px solid var(--border-color);
   border-radius: var(--border-radius);
   box-shadow: var(--shadow-card);
-  padding: 24px;
-  transition: box-shadow var(--transition-fast);
-  align-self: start;
+  padding: 16px;
 }
 
-.control-card:hover {
-  box-shadow: var(--shadow-elevated);
-}
-
-.card-wide {
-  grid-column: 1 / -1;
-}
-
-.control-card h3 {
-  margin: 0 0 16px;
-  font-size: 13px;
-  font-weight: 600;
-  color: var(--text-secondary);
-  text-transform: uppercase;
-  letter-spacing: 0.5px;
+.control-card .card-head {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+  margin-bottom: 12px;
 }
 
 .control-card .card-row {
   display: flex;
   flex-wrap: wrap;
-  gap: 12px;
+  gap: 8px;
   align-items: center;
 }
 
-.control-card .usage-text {
-  font-size: 15px;
+.usage-line {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: baseline;
+  gap: 4px 14px;
+}
+
+.usage-line .usage-value {
+  font-size: 22px;
+  font-weight: 600;
   color: var(--text-primary);
-  line-height: 1.6;
+  font-variant-numeric: tabular-nums;
 }
 
-.control-card .thumbnail-body {
-  text-align: center;
+.usage-line .usage-note {
+  font-size: 12px;
+  color: var(--text-secondary);
 }
 
-.control-card .gallery-name {
-  margin: 0 0 12px;
-  font-size: 14px;
+.setting-row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+  font-size: 13px;
+  color: var(--text-primary);
+}
+
+.thumbnail-body {
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+
+.thumbnail-body .gallery-name {
+  margin: 0;
+  font-size: 13px;
   color: var(--text-secondary);
   word-break: break-all;
 }
 
-/* ========== Element Plus Overrides ========== */
-/* increase default button/input text size */
+.thumbnail-frame {
+  background: var(--bg-sunken);
+  border-radius: var(--border-radius-sm);
+  overflow: hidden;
+}
+
+/* ========== Dialogs ========== */
+.detail-layout {
+  display: grid;
+  grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
+  gap: 20px;
+  align-items: start;
+}
+
+.detail-thumb {
+  width: 100%;
+  height: 200px;
+  border-radius: var(--border-radius-sm);
+  background: var(--bg-sunken);
+}
+
+.detail-list {
+  display: grid;
+  grid-template-columns: 72px minmax(0, 1fr);
+  gap: 6px 12px;
+  margin: 0;
+  font-size: 13px;
+  line-height: 1.6;
+}
+
+.detail-list dt {
+  color: var(--text-secondary);
+}
+
+.detail-list dd {
+  margin: 0;
+  color: var(--text-primary);
+  word-break: break-word;
+}
+
+.mono-value {
+  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+  font-size: 13px;
+  word-break: break-all;
+}
+
+.config-form .section-title {
+  margin: 20px 0 12px;
+}
+
+.config-form .section-title:first-child {
+  margin-top: 0;
+}
+
+.config-form .el-form-item {
+  margin-bottom: 14px;
+}
+
+.field-hint {
+  margin-left: 10px;
+  font-size: 12px;
+  color: var(--text-secondary);
+}
+
+/* ========== Element Plus harmonisation ========== */
+.el-button {
+  font-weight: 500;
+}
+
 .el-button--small {
   font-size: 13px;
 }
+
+.el-button--primary {
+  --el-button-bg-color: var(--accent);
+  --el-button-border-color: var(--accent);
+  --el-button-hover-bg-color: var(--accent-hover);
+  --el-button-hover-border-color: var(--accent-hover);
+}
+
 .el-select {
   font-size: 13px;
 }
+
 .el-input__inner {
   font-size: 14px;
 }
+
 .el-table {
   font-size: 14px;
+  --el-table-border-color: var(--border-color);
+  --el-table-header-bg-color: var(--bg-surface);
+  --el-table-row-hover-bg-color: var(--bg-hover);
+}
+
+.el-table th.el-table__cell {
+  background-color: var(--bg-surface);
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--text-secondary);
+  text-transform: uppercase;
+  letter-spacing: 0.03em;
+}
+
+.el-dialog {
+  border-radius: 12px;
+}
+
+.el-dialog__title {
+  font-size: 16px;
+  font-weight: 600;
 }