feat(ui): update version diff view to v4 design

packages/next/src/views/Version/Default/index.css

@@ -0,0 +1,227 @@
+@layer payload-default {
+  .view-version {
+    width: 100%;
+    padding-bottom: var(--spacing-view-bottom);
+  }
+
+  .view-version__toggle-locales-label {
+    color: var(--color-text-secondary);
+  }
+
+  .view-version-controls-top {
+    border-bottom: var(--stroke-width-small) solid var(--color-border);
+    padding: var(--spacer-2) var(--spacer-4);
+  }
+
+  .view-version-controls-top__wrapper {
+    display: flex;
+    flex-direction: row;
+    justify-content: space-between;
+    align-items: center;
+  }
+
+  .view-version-controls-top__wrapper-actions {
+    display: flex;
+    flex-direction: row;
+    align-items: center;
+    gap: var(--spacer-4);
+  }
+
+  .view-version-controls-top h2 {
+    color: var(--color-text);
+    font-family: var(--text-body-large-strong-font-family);
+    font-size: var(--text-body-large-strong-font-size);
+    font-style: normal;
+    font-weight: var(--text-body-large-strong-font-weight);
+    line-height: var(--text-body-large-strong-line-height);
+    letter-spacing: var(--text-body-large-strong-letter-spacing);
+  }
+
+  .view-version-controls-bottom {
+    border-bottom: var(--stroke-width-small) solid var(--color-border);
+    padding: var(--spacer-2-5) var(--spacer-4);
+    position: relative;
+
+    /* Vertical separator line */
+    &::after {
+      content: '';
+      position: absolute;
+      top: 0;
+      bottom: 0;
+      left: 50%;
+      width: var(--stroke-width-small);
+      background-color: var(--color-border);
+      transform: translateX(-50%);
+    }
+  }
+
+  .view-version-controls-bottom__wrapper {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    gap: var(--spacer-4);
+  }
+
+  .view-version__time-elapsed {
+    color: var(--color-text-secondary);
+    font-weight: var(--text-body-medium-font-weight);
+  }
+
+  .view-version__version-from,
+  .view-version__version-to {
+    display: flex;
+    flex-direction: column;
+    gap: var(--spacer-2);
+  }
+
+  .view-version__version-from-labels,
+  .view-version__version-to-labels {
+    display: flex;
+    flex-direction: row;
+    justify-content: space-between;
+    color: var(--color-text);
+    font-family: var(--text-body-medium-strong-font-family);
+    font-size: var(--text-body-medium-strong-font-size);
+    font-style: normal;
+    font-weight: var(--text-body-medium-strong-font-weight);
+    line-height: var(--text-body-medium-strong-line-height);
+    letter-spacing: var(--text-body-medium-letter-spacing);
+  }
+
+  .view-version__version-to-version {
+    display: flex;
+    flex-direction: row;
+    align-items: center;
+    justify-content: space-between;
+    border: var(--stroke-width-small) solid var(--color-border);
+    border-radius: var(--radius-medium);
+    padding: var(--spacer-1) var(--spacer-2);
+    gap: var(--spacer-2);
+  }
+
+  .view-version__version-to-version h2 {
+    font-family: var(--text-body-medium-font-family);
+    font-size: var(--text-body-medium-font-size);
+    font-weight: var(--text-body-medium-font-weight);
+    line-height: var(--text-body-medium-line-height);
+    letter-spacing: var(--text-body-medium-letter-spacing);
+    color: var(--color-text-secondary);
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .view-version__restore div {
+    margin-block: 0;
+  }
+
+  .view-version__modifiedCheckBox {
+    margin: 0 0 0 var(--spacer-4);
+    display: flex;
+    align-items: center;
+    overflow: hidden;
+    color: var(--color-text);
+    text-overflow: ellipsis;
+    font-family: var(--text-body-medium-font-family);
+    font-size: var(--text-body-medium-font-size);
+    font-style: normal;
+    font-weight: var(--text-body-medium-font-weight);
+    line-height: var(--text-body-medium-line-height);
+    letter-spacing: var(--text-body-medium-letter-spacing);
+  }
+
+  .view-version__modifiedCheckBox label.field-label {
+    font-weight: var(--text-body-medium-font-weight);
+  }
+
+  .compare-version .rs__control {
+    padding: var(--spacer-2);
+  }
+
+  .view-version__diff-wrap {
+    padding: var(--spacer-3) var(--spacer-4);
+    display: flex;
+    flex-direction: column;
+    gap: var(--spacer-3);
+    position: relative;
+    border-bottom: var(--stroke-width-small) solid var(--color-border);
+
+    /* Vertical separator line */
+    &::after {
+      content: '';
+      position: absolute;
+      top: 0;
+      bottom: 0;
+      left: 50%;
+      width: var(--stroke-width-small);
+      background-color: var(--color-border);
+      transform: translateX(-50%);
+      z-index: 2;
+    }
+  }
+
+  @media (max-width: 1024px) {
+    .view-version__version-to-version {
+      flex-direction: column;
+      align-items: flex-start;
+    }
+  }
+
+  @media (max-width: 768px) {
+    .view-version {
+      display: flex;
+      flex-direction: column;
+    }
+
+    .view-version__version-to-version {
+      flex-direction: row;
+      align-items: center;
+    }
+
+    /* Reorder: controls-bottom first, controls-top (checkbox) second, diff last */
+    .view-version-controls-bottom {
+      order: 1;
+      padding-inline: var(--spacer-3);
+
+      /* Hide vertical separator on mobile */
+      &::after {
+        display: none;
+      }
+    }
+
+    .view-version-controls-top {
+      order: 2;
+      padding-inline: var(--spacer-3);
+    }
+
+    .view-version__diff-wrap {
+      order: 3;
+      padding: var(--spacer-3);
+
+      /* Hide vertical separator on mobile */
+      &::after {
+        display: none;
+      }
+    }
+
+    /* Hide title on mobile */
+    .view-version-controls-top h2 {
+      display: none;
+    }
+
+    /* Checkbox: remove left margin */
+    .view-version-controls-top__wrapper .view-version__modifiedCheckBox {
+      margin-left: 0;
+    }
+
+    .view-version-controls-top__wrapper-actions {
+      width: 100%;
+      justify-content: space-between;
+    }
+
+    /* Single column for version selectors */
+    .view-version-controls-bottom__wrapper {
+      grid-template-columns: 1fr;
+      gap: var(--spacer-3);
+    }
+  }
+}