diff --git a/src/assets/layout.css b/src/assets/layout.css
index 6ebc12c..b22ad95 100644
--- a/src/assets/layout.css
+++ b/src/assets/layout.css
@@ -92,7 +92,7 @@ header {
   width: 100%;
   color: var(--muted);
   cursor: ns-resize;
-  font-size: 1.2em;
+  font-size: 1.2rem;
 }
 
 .week-label {
@@ -111,7 +111,7 @@ header {
 
 .month-name-label {
   grid-column: -2 / -1;
-  font-size: 2em;
+  font-size: 2rem;
   font-weight: 700;
   color: var(--muted);
   display: flex;
diff --git a/src/components/BaseDialog.vue b/src/components/BaseDialog.vue
index 2613cb7..f4788de 100644
--- a/src/components/BaseDialog.vue
+++ b/src/components/BaseDialog.vue
@@ -24,7 +24,6 @@ const modalPosition = ref({ x: 0, y: 0 })
 const dialogWidth = ref(null)
 const dialogHeight = ref(null)
 const hasMoved = ref(false)
-const margin = 8 // viewport margin in px to keep dialog from touching edges
 
 // Collect incoming non-prop attributes (e.g., class / style from usage site)
 const attrs = useAttrs()
@@ -62,8 +61,8 @@ function handleDrag(event) {
   const h = dialogHeight.value || modalRef.value?.offsetHeight || 0
   const vw = window.innerWidth
   const vh = window.innerHeight
-  x = clamp(x, margin, Math.max(margin, vw - w - margin))
-  y = clamp(y, margin, Math.max(margin, vh - h - margin))
+  x = clamp(x, 0, Math.max(0, vw - w - 0))
+  y = clamp(y, 0, Math.max(0, vh - h - 0))
   modalPosition.value = { x, y }
   event.preventDefault()
 }
@@ -97,10 +96,14 @@ const modalStyle = computed(() => {
 // <BaseDialog class="settings-modal" :style="{ top: '...' }" /> works even with fragment root.
 const modalAttrs = computed(() => {
   const { class: extClass, style: extStyle, ...rest } = attrs
+  // When dialog has been moved (dragged), internal positioning styles must override external ones
+  const mergedStyle = hasMoved.value
+    ? [extStyle, modalStyle.value].filter(Boolean)
+    : [modalStyle.value, extStyle].filter(Boolean)
   return {
     ...rest,
     class: ['ec-modal', extClass].filter(Boolean),
-    style: [modalStyle.value, extStyle].filter(Boolean), // external style overrides internal
+    style: mergedStyle,
   }
 })
 
@@ -120,7 +123,8 @@ function positionNearAnchor() {
   const anchor = props.anchorEl || anchorRef.value
   if (!anchor) return
   const rect = anchor.getBoundingClientRect()
-  const offsetY = 8 // vertical gap below the anchor
+  const rootFontSize = parseFloat(getComputedStyle(document.documentElement).fontSize)
+  const offsetY = 0.5 * rootFontSize // vertical gap below the anchor in rem converted to pixels
   const w = modalRef.value?.offsetWidth || dialogWidth.value || 320
   const h = modalRef.value?.offsetHeight || dialogHeight.value || 200
   const vw = window.innerWidth
@@ -128,8 +132,8 @@ function positionNearAnchor() {
   let x = rect.left
   let y = rect.bottom + offsetY
   // If anchor is wider than dialog and would overflow right edge, clamp; otherwise keep left align
-  x = clamp(x, margin, Math.max(margin, vw - w - margin))
-  y = clamp(y, margin, Math.max(margin, vh - h - margin))
+  x = clamp(x, 0, Math.max(0, vw - w - 0))
+  y = clamp(y, 0, Math.max(0, vh - h - 0))
   modalPosition.value = { x, y }
 }
 
@@ -172,8 +176,8 @@ function handleResize() {
     const vw = window.innerWidth
     const vh = window.innerHeight
     modalPosition.value = {
-      x: clamp(modalPosition.value.x, margin, Math.max(margin, vw - w - margin)),
-      y: clamp(modalPosition.value.y, margin, Math.max(margin, vh - h - margin)),
+      x: clamp(modalPosition.value.x, 0, Math.max(0, vw - w - 0)),
+      y: clamp(modalPosition.value.y, 0, Math.max(0, vh - h - 0)),
     }
   }
 }
@@ -212,12 +216,12 @@ onUnmounted(() => {
   background: color-mix(in srgb, var(--panel) 85%, transparent);
   backdrop-filter: blur(0.625em);
   color: var(--ink);
-  border-radius: 0.6em;
-  min-height: 23em;
-  min-width: 26em;
-  max-width: min(34em, 90vw);
-  box-shadow: 0 0.6em 1.8em rgba(0, 0, 0, 0.35);
-  border: 0.0625em solid color-mix(in srgb, var(--muted) 40%, transparent);
+  border-radius: 0.6rem;
+  min-height: 23rem;
+  min-width: 26rem;
+  max-width: min(34rem, 90vw);
+  box-shadow: 0 0.6rem 1.8rem rgba(0, 0, 0, 0.35);
+  border: 0.0625rem solid color-mix(in srgb, var(--muted) 40%, transparent);
   z-index: 1000;
   overflow: hidden;
 }
@@ -229,35 +233,35 @@ onUnmounted(() => {
 .ec-form {
   display: grid;
   grid-template-rows: auto 1fr auto;
-  min-height: 23em;
+  min-height: 23rem;
   height: 100%;
   width: 100%;
 }
 .ec-header {
   cursor: move;
   user-select: none;
-  padding: 0.75em 1em 0.5em 1em;
+  padding: 0.75rem 1rem 0.5rem 1rem;
   display: flex;
   justify-content: space-between;
   align-items: center;
-  gap: 1em;
+  gap: 1rem;
 }
 .ec-title {
   margin: 0;
-  font-size: 1.1em;
+  font-size: 1.1rem;
 }
 .ec-body {
   display: flex;
   flex-direction: column;
-  gap: 1em;
-  padding: 0 1em 0.5em 1em;
+  gap: 1rem;
+  padding: 0 1rem 0.5rem 1rem;
   overflow: auto;
 }
 .ec-footer {
-  padding: 0.5em 1em 1em 1em;
+  padding: 0.5rem 1rem 1rem 1rem;
   display: flex;
   justify-content: space-between;
-  gap: 1em;
+  gap: 1rem;
   flex-wrap: wrap;
 }
 </style>
diff --git a/src/components/CalendarDay.vue b/src/components/CalendarDay.vue
index 772d0e6..ebff690 100644
--- a/src/components/CalendarDay.vue
+++ b/src/components/CalendarDay.vue
@@ -188,7 +188,7 @@ const formattedDate = computed(() => {
   overflow: hidden;
   max-width: 100%;
   color: var(--holiday);
-  font-size: 0.8em;
+  font-size: 0.8rem;
   font-weight: 400;
   line-height: 1.0;
   padding-inline: 0.15em;
diff --git a/src/components/CalendarHeader.vue b/src/components/CalendarHeader.vue
index 8954470..7d37870 100644
--- a/src/components/CalendarHeader.vue
+++ b/src/components/CalendarHeader.vue
@@ -135,7 +135,7 @@ const weekdayNames = computed(() => {
   text-transform: uppercase;
   text-align: center;
   font-weight: 600;
-  font-size: 1.2em;
+  font-size: 1.2rem;
 }
 .dow.weekend {
   color: var(--weekend);
diff --git a/src/components/CalendarView.vue b/src/components/CalendarView.vue
index c35ea05..f51f0b6 100644
--- a/src/components/CalendarView.vue
+++ b/src/components/CalendarView.vue
@@ -686,7 +686,7 @@ header h1 {
 .month-label {
   width: 100%;
   opacity: 0.8;
-  font-size: 2em;
+  font-size: 2rem;
   font-weight: 700;
   display: flex;
   align-items: center;
diff --git a/src/components/CalendarWeek.vue b/src/components/CalendarWeek.vue
index f9fade7..f51511d 100644
--- a/src/components/CalendarWeek.vue
+++ b/src/components/CalendarWeek.vue
@@ -67,7 +67,7 @@ const handleEventClick = (payload) => {
   place-items: center;
   width: 100%;
   color: var(--muted);
-  font-size: 1.2em;
+  font-size: 1.2rem;
   font-weight: 500;
   user-select: none;
   height: var(--row-h);
diff --git a/src/components/EventDialog.vue b/src/components/EventDialog.vue
index 727fe86..501188b 100644
--- a/src/components/EventDialog.vue
+++ b/src/components/EventDialog.vue
@@ -674,7 +674,7 @@ const recurrenceSummary = computed(() => {
 }
 
 .ec-field > span {
-  font-size: 0.85em;
+  font-size: 0.85rem;
   color: var(--muted);
 }
 
@@ -688,6 +688,7 @@ const recurrenceSummary = computed(() => {
   width: 100%;
   background: transparent;
   color: var(--ink);
+  font-size: 1rem;
 }
 
 .ec-color-swatches {
@@ -725,6 +726,7 @@ const recurrenceSummary = computed(() => {
   padding: 0.5em 0.8em;
   border-radius: 0.4em;
   cursor: pointer;
+  font-size: 1rem;
   transition: all 0.2s ease;
 }
 
@@ -770,7 +772,7 @@ const recurrenceSummary = computed(() => {
 }
 
 .ec-field-label {
-  font-size: 0.85em;
+  font-size: 0.85rem;
   color: var(--muted);
 }
 
@@ -800,7 +802,7 @@ const recurrenceSummary = computed(() => {
 }
 
 .ec-weekday-text {
-  font-size: 0.8em;
+  font-size: 0.8rem;
   font-weight: 500;
   text-align: center;
 }
@@ -847,7 +849,7 @@ const recurrenceSummary = computed(() => {
   align-items: center;
   gap: 0.5em;
   flex-wrap: wrap;
-  font-size: 0.75em;
+  font-size: 0.75rem;
 }
 .freq-select {
   padding: 0.4rem 0.55rem;
@@ -878,6 +880,7 @@ const recurrenceSummary = computed(() => {
   background: var(--panel-alt);
   border-radius: 0.45rem;
   padding: 0.4rem 0.5rem;
+  font-size: 1rem;
   transition:
     border-color 0.18s ease,
     background-color 0.18s ease,
diff --git a/src/components/EventOverlay.vue b/src/components/EventOverlay.vue
index cc01165..657fcc1 100644
--- a/src/components/EventOverlay.vue
+++ b/src/components/EventOverlay.vue
@@ -185,7 +185,7 @@ function segmentKey(seg) {
 
 function getSegmentRowHeight(seg) {
   const data = segmentCompression.value[segmentKey(seg)]
-  return data && typeof data.rowHeight === 'number' ? `${data.rowHeight}px` : '1.5em'
+  return data && typeof data.rowHeight === 'number' ? `${data.rowHeight}px` : '1.5rem'
 }
 
 function getSegmentTotalHeight(seg) {
@@ -580,7 +580,7 @@ function applyRangeDuringDrag(st, startDate, endDate) {
   border-radius: 1rem;
   /* Font-size so that ascender+descender exactly fills the row height:
     given total = asc+desc at 1em (hardcoded 1.15), font-size = rowHeight / total */
-  font-size: calc(var(--segment-row-height, 1.5em) / 1.15);
+  font-size: calc(var(--segment-row-height, 1.5rem) / 1.15);
   font-weight: 500;
   cursor: grab;
   pointer-events: auto;
diff --git a/src/components/HeaderControls.vue b/src/components/HeaderControls.vue
index d1cbaf2..b1fc6a4 100644
--- a/src/components/HeaderControls.vue
+++ b/src/components/HeaderControls.vue
@@ -267,7 +267,7 @@ onBeforeUnmount(() => {
   padding: 0;
   margin: 0.5em;
   cursor: pointer;
-  font-size: 1em;
+  font-size: 1rem;
   font-weight: 700;
   line-height: 1;
   display: inline-flex;
@@ -356,14 +356,14 @@ onBeforeUnmount(() => {
 }
 
 .today-date {
-  font-size: 1.5em;
+  font-size: 1.5rem;
   white-space: pre-line;
   text-align: center;
 }
 
 .current-time {
   font-family: ui-monospace, SF Mono, Consolas, Monaco, "Cascadia Mono", "Segoe UI Mono", "Roboto Mono", "Ubuntu Mono", "Source Code Pro", "Fira Mono", "Droid Sans Mono", "Courier New", monospace;
-  font-size: 3.6em;
+  font-size: 3.6rem;
   white-space: nowrap;
   text-align: center;
   cursor: pointer;
diff --git a/src/components/Numeric.vue b/src/components/Numeric.vue
index c0af7bd..65b06ff 100644
--- a/src/components/Numeric.vue
+++ b/src/components/Numeric.vue
@@ -245,6 +245,7 @@ function onWheel(e) {
   justify-content: center;
   gap: 0.25rem;
   background: none;
+  font-size: 1rem;
   font-variant-numeric: tabular-nums;
   touch-action: none;
 }
diff --git a/src/components/Search.vue b/src/components/Search.vue
index 0cbed26..382b7e7 100644
--- a/src/components/Search.vue
+++ b/src/components/Search.vue
@@ -486,7 +486,7 @@ function parseGoToDateCandidate(input, refStr) {
   border-radius: 0.45rem;
   border: .1rem solid color-mix(in srgb, var(--muted) 35%, transparent);
   background: color-mix(in srgb, var(--panel) 88%, transparent);
-  font: inherit;
+  font-size: 1rem;
   line-height: 1.1;
   color: var(--ink);
   outline: none;
diff --git a/src/components/SettingsDialog.vue b/src/components/SettingsDialog.vue
index e98455a..52fb1c7 100644
--- a/src/components/SettingsDialog.vue
+++ b/src/components/SettingsDialog.vue
@@ -258,6 +258,7 @@ select {
   color: var(--ink);
   padding: 0.4rem 0.5rem;
   border-radius: 0.4rem;
+  font-size: 1rem;
 }
 
 .holiday-row {
@@ -273,7 +274,7 @@ select {
 
 .state-select {
   flex: 0 0 auto;
-  min-width: 120px;
+  min-width: 4rem;
 }
 
 .footer-row {
@@ -297,6 +298,7 @@ select {
   padding: 0.5rem 0.8rem;
   border-radius: 0.4rem;
   cursor: pointer;
+  font-size: 1rem;
 }
 .ec-btn.close-btn {
   background: var(--panel-alt);