Add projects

frontend/src/features/config/components/FloatingSaveBar.module.scss

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+@use '../../../styles/mixins' as *;
+
+/* 悬浮保存栏：底部居中的玻璃工具栏（--content-center-x 对齐内容列中心） */
+
+.container {
+  position: fixed;
+  bottom: calc(12px + env(safe-area-inset-bottom, 0px));
+  left: var(--content-center-x, 50%);
+  transform: translateX(-50%);
+  width: min(720px, calc(100vw - 24px));
+  z-index: $z-dropdown;
+  pointer-events: none;
+}
+
+.bar {
+  pointer-events: auto;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  flex-wrap: wrap;
+  gap: 8px 16px;
+  padding: 10px 14px;
+  border-radius: 16px;
+  --glass-blur: 14px;
+  border: 1px solid var(--glass-border);
+  background: var(--glass-bg);
+  backdrop-filter: var(--glass-backdrop-filter);
+  box-shadow: var(--shadow-lg);
+}
+
+/* 状态文案：mono 遥测 */
+.status {
+  font-family: $font-mono;
+  font-size: 12px;
+  font-weight: 650;
+  font-variant-numeric: tabular-nums;
+  padding-right: 4px;
+  min-width: 0;
+  overflow-wrap: anywhere;
+}
+
+.statusWarning {
+  color: var(--amber-text);
+}
+
+.statusError {
+  color: var(--viz-failure);
+}
+
+.statusBusy,
+.statusMuted {
+  color: var(--text-secondary);
+}
+
+.statusOk {
+  color: var(--viz-success);
+}
+
+.actionsGroup {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  flex-shrink: 0;
+}
+
+/* 保存：墨色药丸主按钮 */
+.savePill {
+  display: inline-flex;
+  align-items: center;
+  gap: 7px;
+  border: 0;
+  cursor: pointer;
+  background: var(--text-primary);
+  color: var(--bg-secondary);
+  border-radius: $radius-full;
+  padding: 9px 16px;
+  font-size: 13px;
+  font-weight: 600;
+  line-height: 1;
+  transition:
+    transform var(--dur-press, 160ms) var(--ease-out-strong, ease-out),
+    background-color var(--dur-hover, 200ms) var(--ease-out-strong, ease-out),
+    box-shadow var(--dur-hover, 200ms) var(--ease-out-strong, ease-out);
+
+  &:disabled {
+    cursor: not-allowed;
+    opacity: 0.55;
+  }
+
+  &:active:not(:disabled) {
+    transform: translateY(0) scale(0.97);
+  }
+
+  &:focus-visible {
+    outline: 2px solid var(--primary-color);
+    outline-offset: 2px;
+  }
+}
+
+@media (hover: hover) and (pointer: fine) {
+  .savePill:hover:not(:disabled) {
+    transform: translateY(-1px);
+    background: color-mix(in srgb, var(--text-primary) 86%, var(--bg-secondary));
+    box-shadow: 0 12px 26px color-mix(in srgb, var(--text-primary) 22%, transparent);
+  }
+}
+
+/* 放弃更改：安静的文字链接 */
+.ghostAction {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  border: 0;
+  cursor: pointer;
+  background: none;
+  color: var(--text-secondary);
+  border-radius: $radius-full;
+  padding: 9px 12px;
+  font-size: 12.5px;
+  font-weight: 550;
+  line-height: 1;
+  transition:
+    color var(--dur-hover, 200ms) var(--ease-out-strong, ease-out),
+    transform var(--dur-press, 160ms) var(--ease-out-strong, ease-out);
+
+  &:disabled {
+    cursor: not-allowed;
+    opacity: 0.55;
+  }
+
+  &:active:not(:disabled) {
+    transform: scale(0.97);
+  }
+
+  &:focus-visible {
+    outline: 2px solid var(--primary-color);
+    outline-offset: 2px;
+  }
+}
+
+@media (hover: hover) and (pointer: fine) {
+  .ghostAction:hover:not(:disabled) {
+    color: var(--text-primary);
+  }
+}
+
+@include mobile {
+  .container {
+    width: calc(100vw - 16px);
+  }
+
+  .bar {
+    flex-direction: column;
+    align-items: stretch;
+  }
+
+  .actionsGroup {
+    justify-content: stretch;
+
+    > * {
+      flex: 1;
+      justify-content: center;
+    }
+  }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .savePill,
+  .ghostAction {
+    transition: none;
+  }
+
+  .savePill:active:not(:disabled),
+  .ghostAction:active:not(:disabled) {
+    transform: none;
+  }
+}