diff --git a/src/styles/editor.scss b/src/styles/editor.scss
new file mode 100644
index 0000000..9d97781
--- /dev/null
+++ b/src/styles/editor.scss
@@ -0,0 +1,68 @@
+/**
+ * Editor-only styles for the Filtered Image block.
+ *
+ * The swatch grid and inspector panel live here — they only need to render
+ * inside the editor canvas.
+ *
+ * @package ImageFilters
+ */
+
+.ksolo-image-filter-panel {
+    .components-base-control {
+        margin-bottom: 16px;
+    }
+}
+
+.ksolo-image-filter-presets {
+    display: grid;
+    grid-template-columns: repeat( 4, 1fr );
+    gap: 8px;
+    margin-bottom: 16px;
+}
+
+.ksolo-image-filter-preset {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    padding: 8px;
+    border: 1px solid #ddd;
+    border-radius: 4px;
+    background: #fff;
+    cursor: pointer;
+    font-size: 11px;
+    text-align: center;
+    transition: border-color 0.15s ease, box-shadow 0.15s ease;
+
+    &:hover {
+        border-color: #999;
+    }
+
+    &[aria-pressed='true'] {
+        border-color: #007cba;
+        box-shadow: 0 0 0 1px #007cba;
+    }
+
+    &:focus-visible {
+        outline: 2px solid #007cba;
+        outline-offset: 2px;
+    }
+}
+
+.ksolo-image-filter-preset__swatch {
+    width: 32px;
+    height: 32px;
+    border-radius: 4px;
+    border: 1px solid rgba(0, 0, 0, 0.1);
+    margin-bottom: 4px;
+}
+
+.ksolo-image-filter-preview {
+    text-align: center;
+
+    img {
+        max-width: 100%;
+        height: auto;
+        display: block;
+        margin: 0 auto;
+    }
+}
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diff --git a/src/styles/style.scss b/src/styles/style.scss
new file mode 100644
index 0000000..fc58727
--- /dev/null
+++ b/src/styles/style.scss
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+/**
+ * Filtered Image block — front-end and editor styles.
+ *
+ * The .has-filter-<slug> classes below MUST stay in sync with PRESETS in
+ * src/presets.js. The cssFilter value in presets.js is the source of truth;
+ * the rules below reproduce it. If they diverge, treat it as a bug.
+ *
+ * @package ImageFilters
+ */
+
+.wp-block-ksolo-image-filter {
+    --filter-intensity: 1;
+    display: inline-block;
+    margin: 0;
+
+    img {
+        filter: none;
+        max-width: 100%;
+        height: auto;
+    }
+}
+
+// Intensity scaling via CSS custom property.
+// Each filter value is split into calc(...) expressions where the literal
+// numbers are replaced with (value * var(--filter-intensity)). For "none"
+// (normal preset) there is nothing to scale — the image stays unfiltered.
+.wp-block-ksolo-image-filter {
+    .has-filter-warm img {
+        filter: saturate( calc( 1.25 * var(--filter-intensity) ) )
+            sepia( calc( 0.18 * var(--filter-intensity) ) )
+            brightness( calc( 0.05 + 1 * var(--filter-intensity) ) )
+            contrast( calc( 0.05 + 1 * var(--filter-intensity) ) );
+    }
+
+    .has-filter-cool img {
+        filter: saturate( calc( 0.05 + 0.95 * var(--filter-intensity) ) )
+            hue-rotate( calc( -10deg * var(--filter-intensity) ) )
+            brightness( calc( 0.02 + 1 * var(--filter-intensity) ) )
+            contrast( calc( 0.05 + 1 * var(--filter-intensity) ) );
+    }
+
+    .has-filter-vivid img {
+        filter: saturate( calc( 0.6 * var(--filter-intensity) ) )
+            contrast( calc( 0.15 + 1 * var(--filter-intensity) ) )
+            brightness( calc( 0.03 + 1 * var(--filter-intensity) ) );
+    }
+
+    .has-filter-fade img {
+        filter: saturate( calc( 0.15 + 0.85 * var(--filter-intensity) ) )
+            contrast( calc( 0.1 + 0.9 * var(--filter-intensity) ) )
+            brightness( calc( 0.08 + 1 * var(--filter-intensity) ) )
+            sepia( calc( 0.08 * var(--filter-intensity) ) );
+    }
+
+    .has-filter-mono img {
+        filter: grayscale( var(--filter-intensity) ) contrast( calc( 0.05 + 1 * var(--filter-intensity) ) );
+    }
+
+    .has-filter-dramatic img {
+        filter: contrast( calc( 0.35 + 1 * var(--filter-intensity) ) )
+            saturate( calc( 0.15 + 1 * var(--filter-intensity) ) )
+            brightness( calc( 1 - 0.08 * var(--filter-intensity) ) );
+    }
+
+    .has-filter-sepia img {
+        filter: sepia( calc( 0.85 * var(--filter-intensity) ) )
+            saturate( calc( 0.1 + 1 * var(--filter-intensity) ) )
+            contrast( calc( 0.05 + 1 * var(--filter-intensity) ) );
+    }
+}
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