polish(water-log/settings): Apple HIG refinements to the Smartsheet surface

Layer HIG polish on top of the Field Almanac visual identity — no
layout change, just quality.

Per-element polish:
- Inputs: focus-visible ring (4px at 15% opacity), subtle inner
  shadow, 44pt min tap target, motion-safe transition.
- Selects: same focus ring + min height + transition.
- Toggles: Apple spring curve (cubic-bezier 0.32,0.72,0,1), 26×46
  track, 20px thumb, 200ms color, 200ms spring transform, focus
  ring, active:scale-0.97.
- Buttons: focus-visible ring, active:scale-0.97 press state, 48pt
  primary CTA, 40pt secondary, refined hover with subtle lift shadow.
- Status banner: inline SVG icon (filled circle + check or info-i),
  polite/assertive aria-live, slide-down entrance.
- Test Connection result: HIG-style icon (filled green/red circle +
  stroke check/x), refined hierarchy.
- Backfill result + error: same HIG pattern as status banner.
- Modal: backdrop-blur-[6px], spring entrance (sheet-up 220ms),
  rounded-t-2xl on mobile (sheet-style) and rounded-2xl on sm+.
- All animations: motion-safe: + a prefers-reduced-motion block
  in globals.css that disables them.

Type system: kept the existing --font-display (Field Almanac serif
identity) for headings; system-ui for body remains the fallback chain
in the existing --font-sans token.

New keyframes in globals.css: smartsheet-fade-in,
smartsheet-sheet-up, smartsheet-slide-down. All short (180–220ms)
to feel responsive.

Also: button label 'Save Settings' → 'Save changes' (sentence case,
matches HIG register) on the parent settings page and the Smartsheet
card.

src/app/admin/water-log/settings/page.tsx

@@ -261,13 +261,44 @@ export default function WaterLogSettingsPage() {
         <form onSubmit={handleSave} className="space-y-6">
           {message && (
             <div
-              className={`rounded-lg border px-4 py-3 text-sm font-medium ${
+              role={message.type === "error" ? "alert" : "status"}
+              aria-live={message.type === "error" ? "assertive" : "polite"}
+              className={`smartsheet-slide-down flex items-start gap-3 rounded-lg border px-4 py-3 text-[13.5px] font-medium
+                ${
                   message.type === "success"
-                  ? "border-[#1a4d2e] bg-[#1a4d2e]/5 text-[#1a4d2e]"
+                    ? "border-[#1a4d2e]/25 bg-[#1a4d2e]/[0.05] text-[#143d24]"
-                  : "border-[#a4452b] bg-[#a4452b]/5 text-[#a4452b]"
+                    : "border-[#a4452b]/25 bg-[#a4452b]/[0.05] text-[#7a341f]"
                 }`}
             >
-              {message.text}
+              <span
+                aria-hidden
+                className={`mt-0.5 inline-flex h-5 w-5 shrink-0 items-center justify-center rounded-full text-white ${
+                  message.type === "success" ? "bg-[#1a4d2e]" : "bg-[#a4452b]"
+                }`}
+              >
+                {message.type === "success" ? (
+                  <svg viewBox="0 0 12 12" className="h-3 w-3">
+                    <path
+                      d="M2 6.5L5 9.5L10 3.5"
+                      stroke="currentColor"
+                      strokeWidth="2"
+                      fill="none"
+                      strokeLinecap="round"
+                      strokeLinejoin="round"
+                    />
+                  </svg>
+                ) : (
+                  <svg viewBox="0 0 12 12" className="h-3 w-3">
+                    <path
+                      d="M6 3V6.5M6 8.5V9"
+                      stroke="currentColor"
+                      strokeWidth="2"
+                      strokeLinecap="round"
+                    />
+                  </svg>
+                )}
+              </span>
+              <p className="leading-snug">{message.text}</p>
             </div>
           )}
 
@@ -317,9 +348,22 @@ export default function WaterLogSettingsPage() {
                       type="button"
                       onClick={handleRegenerate}
                       disabled={regenerating}
-                      className="shrink-0 rounded-lg border border-[#1a4d2e] bg-[#1a4d2e] px-4 py-2 text-sm font-semibold text-white transition hover:bg-[#143d24] disabled:opacity-50"
+                      className="inline-flex min-h-[40px] shrink-0 items-center justify-center rounded-lg border border-[#1a4d2e] bg-[#1a4d2e] px-4 py-2
+                        text-[14px] font-semibold text-white
+                        motion-safe:transition-[background-color,transform] motion-safe:duration-150 motion-safe:ease-out
+                        hover:bg-[#143d24]
+                        focus:outline-none focus-visible:ring-4 focus-visible:ring-[#1a4d2e]/30
+                        active:scale-[0.97] active:bg-[#0f2e1c]
+                        disabled:opacity-50 disabled:cursor-not-allowed"
                     >
-                      {regenerating ? "Generating…" : "Regenerate PIN"}
+                      {regenerating ? (
+                        <span className="inline-flex items-center gap-2">
+                          <span className="h-3.5 w-3.5 animate-spin rounded-full border-2 border-white/30 border-t-white motion-reduce:animate-none" />
+                          Generating…
+                        </span>
+                      ) : (
+                        "Regenerate PIN"
+                      )}
                     </button>
                   </div>
                 )}
@@ -393,7 +437,10 @@ export default function WaterLogSettingsPage() {
                         dispatch({ type: "SET_ALERT_PHONE", value: e.target.value })
                       }
                       placeholder="+13035551234"
-                      className="mt-1 w-full rounded-lg border border-[#d4d9d3] bg-white px-4 py-2.5 text-base outline-none focus:border-[#1a4d2e] focus:ring-1 focus:ring-[#1a4d2e]"
+                      className="mt-1 block min-h-[44px] w-full rounded-lg border border-[#d4d9d3] bg-white px-4 py-2.5
+                        text-[14px] text-[#1d1d1f] placeholder:text-[#a3a5a0]
+                        outline-none motion-safe:transition-[border-color,box-shadow] motion-safe:duration-150
+                        focus:border-[#1a4d2e] focus:ring-4 focus:ring-[#1a4d2e]/15"
                       autoComplete="tel"
                     />
                     <p className="mt-1 text-xs text-[#8a8b88]">
@@ -408,9 +455,23 @@ export default function WaterLogSettingsPage() {
           <button
             type="submit"
             disabled={saving}
-            className="w-full rounded-lg bg-[#1a4d2e] px-6 py-3.5 text-sm font-semibold uppercase tracking-wider text-white transition hover:bg-[#143d24] disabled:opacity-50"
+            className="inline-flex min-h-[48px] w-full items-center justify-center rounded-lg bg-[#1a4d2e] px-6 py-3
+              text-[14px] font-semibold tracking-tight text-white
+              shadow-[0_1px_0_rgba(0,0,0,0.06),inset_0_1px_0_rgba(255,255,255,0.06)]
+              motion-safe:transition-[background-color,transform,box-shadow] motion-safe:duration-150 motion-safe:ease-out
+              hover:bg-[#143d24] hover:shadow-[0_2px_4px_rgba(15,23,18,0.1),inset_0_1px_0_rgba(255,255,255,0.06)]
+              focus:outline-none focus-visible:ring-4 focus-visible:ring-[#1a4d2e]/30 focus-visible:ring-offset-2 focus-visible:ring-offset-[#fdfaf2]
+              active:scale-[0.985] active:bg-[#0f2e1c]
+              disabled:cursor-not-allowed disabled:opacity-50"
           >
-            {saving ? "Saving…" : "Save Settings"}
+            {saving ? (
+              <span className="inline-flex items-center gap-2">
+                <span className="h-4 w-4 animate-spin rounded-full border-2 border-white/30 border-t-white motion-reduce:animate-none" />
+                Saving…
+              </span>
+            ) : (
+              "Save changes"
+            )}
           </button>
         </form>
 
@@ -450,10 +511,16 @@ function Card({
   children: React.ReactNode;
 }) {
   return (
-    <section className="rounded-xl border border-[#d4d9d3] bg-white p-5 shadow-sm">
+    <section className="rounded-xl border border-[#d4d9d3] bg-white/95 p-6 shadow-[0_1px_2px_rgba(15,23,18,0.04),0_2px_6px_-2px_rgba(15,23,18,0.06)]">
-      <header className="mb-4">
+      <header className="mb-5">
-        <h2 className="text-base font-semibold text-[#1d1d1f]">{title}</h2>
+        <h2 className="text-[15px] font-semibold tracking-tight text-[#1d1d1f]">
-        {subtitle && <p className="mt-0.5 text-xs text-[#5a5d5a]">{subtitle}</p>}
+          {title}
+        </h2>
+        {subtitle && (
+          <p className="mt-1 text-[13px] leading-snug text-[#5a5d5a]">
+            {subtitle}
+          </p>
+        )}
       </header>
       {children}
     </section>
@@ -483,14 +550,17 @@ function ToggleRow({
         aria-checked={value}
         aria-label={label}
         onClick={() => onChange(!value)}
-        className={`relative inline-flex h-6 w-11 shrink-0 items-center rounded-full transition-colors ${
+        className={`group relative inline-flex h-[26px] w-[46px] shrink-0 items-center rounded-full
-          value ? "bg-[#1a4d2e]" : "bg-[#d4d9d3]"
+          motion-safe:transition-colors motion-safe:duration-200
-        }`}
+          focus:outline-none focus-visible:ring-4 focus-visible:ring-[#1a4d2e]/25 focus-visible:ring-offset-2 focus-visible:ring-offset-white
+          active:scale-[0.97] motion-safe:transition-transform motion-safe:ease-out
+          ${value ? "bg-[#1a4d2e]" : "bg-[#d4d9d3]"}`}
       >
         <span
-          className={`inline-block h-4 w-4 transform rounded-full bg-white shadow transition-transform ${
+          className={`inline-block h-[20px] w-[20px] transform rounded-full bg-white shadow-[0_1px_2px_rgba(0,0,0,0.2),0_1px_1px_rgba(0,0,0,0.06)]
-            value ? "translate-x-6" : "translate-x-1"
+            motion-safe:transition-transform motion-safe:duration-200
-          }`}
+            motion-safe:ease-[cubic-bezier(0.32,0.72,0,1)]
+            ${value ? "translate-x-[22px]" : "translate-x-[3px]"}`}
         />
       </button>
     </div>

src/app/globals.css

@@ -1104,6 +1104,32 @@ select:-webkit-autofill:focus {
 .atelier-backdrop {
   animation: atelier-backdrop 140ms ease-out both;
 }
+
+/* Smartsheet integration polish — Apple HIG-inspired micro-animations.
+ * Kept short (180–220ms) and single-property to feel responsive. The
+ * global prefers-reduced-motion block further down disables all of
+ * these for users who request reduced motion. */
+@keyframes smartsheet-fade-in {
+  from { opacity: 0; }
+  to   { opacity: 1; }
+}
+@keyframes smartsheet-sheet-up {
+  from { opacity: 0; transform: translateY(8px) scale(0.985); }
+  to   { opacity: 1; transform: translateY(0)   scale(1); }
+}
+@keyframes smartsheet-slide-down {
+  from { opacity: 0; transform: translateY(-4px); }
+  to   { opacity: 1; transform: translateY(0); }
+}
+.smartsheet-fade-in {
+  animation: smartsheet-fade-in 180ms ease-out both;
+}
+.smartsheet-sheet-up {
+  animation: smartsheet-sheet-up 220ms cubic-bezier(0.32, 0.72, 0, 1) both;
+}
+.smartsheet-slide-down {
+  animation: smartsheet-slide-down 180ms cubic-bezier(0.32, 0.72, 0, 1) both;
+}
 .atelier-stagger > * {
   animation: atelier-stagger 180ms ease-out both;
   /* No more 80-440ms cumulative delays — items appear together, not as a parade. */

src/components/admin/water-log/SmartsheetIntegrationCard.tsx

@@ -402,13 +402,44 @@ export default function SmartsheetIntegrationCard({
     <form onSubmit={handleSave} className="space-y-6">
       {state.message && (
         <div
-          className={`rounded-lg border px-4 py-3 text-sm font-medium ${
+          role={state.message.type === "error" ? "alert" : "status"}
+          aria-live={state.message.type === "error" ? "assertive" : "polite"}
+          className={`smartsheet-slide-down flex items-start gap-3 rounded-lg border px-4 py-3 text-[13.5px]
+            ${
               state.message.type === "success"
-              ? "border-[#1a4d2e] bg-[#1a4d2e]/5 text-[#1a4d2e]"
+                ? "border-[#1a4d2e]/25 bg-[#1a4d2e]/[0.05] text-[#143d24]"
-              : "border-[#a4452b] bg-[#a4452b]/5 text-[#a4452b]"
+                : "border-[#a4452b]/25 bg-[#a4452b]/[0.05] text-[#7a341f]"
             }`}
         >
-          {state.message.text}
+          <span
+            aria-hidden
+            className={`mt-0.5 inline-flex h-5 w-5 shrink-0 items-center justify-center rounded-full text-white ${
+              state.message.type === "success" ? "bg-[#1a4d2e]" : "bg-[#a4452b]"
+            }`}
+          >
+            {state.message.type === "success" ? (
+              <svg viewBox="0 0 12 12" className="h-3 w-3">
+                <path
+                  d="M2 6.5L5 9.5L10 3.5"
+                  stroke="currentColor"
+                  strokeWidth="2"
+                  fill="none"
+                  strokeLinecap="round"
+                  strokeLinejoin="round"
+                />
+              </svg>
+            ) : (
+              <svg viewBox="0 0 12 12" className="h-3 w-3">
+                <path
+                  d="M6 3V6.5M6 8.5V9"
+                  stroke="currentColor"
+                  strokeWidth="2"
+                  strokeLinecap="round"
+                />
+              </svg>
+            )}
+          </span>
+          <p className="font-medium leading-snug">{state.message.text}</p>
         </div>
       )}
 
@@ -431,7 +462,12 @@ export default function SmartsheetIntegrationCard({
           <button
             type="button"
             onClick={() => dispatch({ type: "OPEN_SETUP_MODAL" })}
-            className="rounded-md border border-[#d4d9d3] bg-white px-3 py-1.5 text-xs font-semibold uppercase tracking-wider text-[#5a5d5a] transition hover:border-[#1a4d2e] hover:text-[#1a4d2e]"
+            className="inline-flex min-h-[32px] items-center justify-center rounded-lg border border-[#d4d9d3] bg-white px-3.5 py-1.5
+              text-[12.5px] font-semibold text-[#5a5d5a]
+              motion-safe:transition-[background-color,border-color,color] motion-safe:duration-150
+              hover:border-[#1a4d2e] hover:bg-[#f4f1e8] hover:text-[#1a4d2e]
+              focus:outline-none focus-visible:ring-4 focus-visible:ring-[#1a4d2e]/20
+              active:scale-[0.97] motion-safe:transition-transform motion-safe:ease-out"
           >
             Setup instructions
           </button>
@@ -453,7 +489,11 @@ export default function SmartsheetIntegrationCard({
               dispatch({ type: "SET_SHEET_ID", value: e.target.value })
             }
             placeholder="https://app.smartsheet.com/sheets/AbCdEfGhIjKlMn  or  123456789012345"
-            className="w-full rounded-lg border border-[#d4d9d3] bg-white px-4 py-2.5 font-mono text-sm outline-none focus:border-[#1a4d2e] focus:ring-1 focus:ring-[#1a4d2e]"
+            className="block min-h-[44px] w-full rounded-lg border border-[#d4d9d3] bg-white px-4 py-2.5
+              font-mono text-[14px] text-[#1d1d1f] placeholder:text-[#a3a5a0]
+              shadow-[inset_0_1px_0_rgba(15,23,18,0.02)]
+              outline-none motion-safe:transition-[border-color,box-shadow] motion-safe:duration-150
+              focus:border-[#1a4d2e] focus:ring-4 focus:ring-[#1a4d2e]/15"
             autoComplete="off"
           />
           <p className="text-xs text-[#8a8b88]">
@@ -484,13 +524,22 @@ export default function SmartsheetIntegrationCard({
                   ? `Leave blank to keep the saved token (${state.savedConfig.maskedToken ?? "••••"})`
                   : "Paste your Smartsheet API token"
               }
-              className="flex-1 rounded-lg border border-[#d4d9d3] bg-white px-4 py-2.5 font-mono text-sm outline-none focus:border-[#1a4d2e] focus:ring-1 focus:ring-[#1a4d2e]"
+              className="min-h-[44px] flex-1 rounded-lg border border-[#d4d9d3] bg-white px-4 py-2.5
+                font-mono text-[14px] text-[#1d1d1f] placeholder:text-[#a3a5a0]
+                shadow-[inset_0_1px_0_rgba(15,23,18,0.02)]
+                outline-none motion-safe:transition-[border-color,box-shadow] motion-safe:duration-150
+                focus:border-[#1a4d2e] focus:ring-4 focus:ring-[#1a4d2e]/15"
               autoComplete="off"
             />
             <button
               type="button"
               onClick={() => dispatch({ type: "TOGGLE_SHOW_TOKEN" })}
-              className="rounded-lg border border-[#d4d9d3] bg-white px-3 text-xs font-medium text-[#5a5d5a] hover:bg-[#f4f1e8]"
+              className="inline-flex min-h-[44px] items-center justify-center rounded-lg border border-[#d4d9d3] bg-white px-3
+                text-[13px] font-medium text-[#5a5d5a]
+                motion-safe:transition-colors motion-safe:duration-150
+                hover:bg-[#f4f1e8] hover:text-[#1d1d1f]
+                focus:outline-none focus-visible:ring-4 focus-visible:ring-[#1a4d2e]/20
+                active:scale-[0.97] motion-safe:transition-transform motion-safe:ease-out"
               aria-label={state.showToken ? "Hide token" : "Show token"}
             >
               {state.showToken ? "Hide" : "Show"}
@@ -519,9 +568,22 @@ export default function SmartsheetIntegrationCard({
             type="button"
             onClick={handleTest}
             disabled={state.test.state === "loading"}
-            className="rounded-lg border border-[#1a4d2e] bg-white px-4 py-2 text-sm font-semibold text-[#1a4d2e] transition hover:bg-[#1a4d2e] hover:text-white disabled:opacity-50"
+            className="inline-flex min-h-[40px] items-center justify-center rounded-lg border border-[#1a4d2e] bg-white px-4 py-2
+              text-[14px] font-semibold text-[#1a4d2e]
+              motion-safe:transition-[background-color,color,transform] motion-safe:duration-150 motion-safe:ease-out
+              hover:bg-[#1a4d2e] hover:text-white
+              focus:outline-none focus-visible:ring-4 focus-visible:ring-[#1a4d2e]/25
+              active:scale-[0.97]
+              disabled:opacity-50 disabled:cursor-not-allowed"
           >
-            {state.test.state === "loading" ? "Testing…" : "Test Connection"}
+            {state.test.state === "loading" ? (
+              <span className="inline-flex items-center gap-2">
+                <span className="h-3.5 w-3.5 animate-spin rounded-full border-2 border-current border-r-transparent motion-reduce:animate-none" />
+                Testing…
+              </span>
+            ) : (
+              "Test Connection"
+            )}
           </button>
           <TestResultPanel test={state.test} />
         </div>
@@ -535,11 +597,15 @@ export default function SmartsheetIntegrationCard({
           {(Object.keys(FREQUENCY_LABELS) as SmartsheetFrequency[]).map((f) => (
             <label
               key={f}
-              className={`flex cursor-pointer items-start gap-3 rounded-lg border px-4 py-3 transition ${
+              className={`flex cursor-pointer items-start gap-3 rounded-lg border px-4 py-3
+                motion-safe:transition-[border-color,background-color] motion-safe:duration-150
+                ${
                   state.frequency === f
-                  ? "border-[#1a4d2e] bg-[#1a4d2e]/5"
+                    ? "border-[#1a4d2e] bg-[#1a4d2e]/[0.04]"
-                  : "border-[#d4d9d3] bg-white hover:border-[#1a4d2e]"
+                    : "border-[#d4d9d3] bg-white hover:border-[#a8b4a4] hover:bg-[#fcfaf3]"
-              }`}
+                }
+                focus-within:ring-4 focus-within:ring-[#1a4d2e]/15 focus-within:border-[#1a4d2e]
+                active:scale-[0.997] motion-safe:transition-transform motion-safe:ease-out`}
             >
               <input
                 type="radio"
@@ -549,9 +615,9 @@ export default function SmartsheetIntegrationCard({
                 onChange={() =>
                   dispatch({ type: "SET_FREQUENCY", value: f })
                 }
-                className="mt-0.5 accent-[#1a4d2e]"
+                className="mt-0.5 h-4 w-4 cursor-pointer accent-[#1a4d2e]"
               />
-              <span className="flex-1 text-sm font-medium text-[#1d1d1f]">
+              <span className="flex-1 text-[14px] font-medium text-[#1d1d1f]">
                 {FREQUENCY_LABELS[f]}
               </span>
             </label>
@@ -608,7 +674,10 @@ export default function SmartsheetIntegrationCard({
                           value: e.target.value,
                         })
                       }
-                      className="flex-1 rounded-lg border border-[#d4d9d3] bg-white px-3 py-2 text-sm outline-none focus:border-[#1a4d2e] focus:ring-1 focus:ring-[#1a4d2e]"
+                      className="min-h-[40px] flex-1 rounded-lg border border-[#d4d9d3] bg-white px-3 py-2
+                        text-[14px] text-[#1d1d1f]
+                        outline-none motion-safe:transition-[border-color,box-shadow] motion-safe:duration-150
+                        focus:border-[#1a4d2e] focus:ring-4 focus:ring-[#1a4d2e]/15"
                     >
                       <option value="">
                         — {required ? "Select a column" : "Not mapped"} —
@@ -635,7 +704,10 @@ export default function SmartsheetIntegrationCard({
                         })
                       }
                       placeholder="Column ID (numeric)"
-                      className="flex-1 rounded-lg border border-[#d4d9d3] bg-white px-3 py-2 font-mono text-sm outline-none focus:border-[#1a4d2e] focus:ring-1 focus:ring-[#1a4d2e]"
+                      className="min-h-[40px] flex-1 rounded-lg border border-[#d4d9d3] bg-white px-3 py-2
+                        font-mono text-[14px] text-[#1d1d1f] placeholder:text-[#a3a5a0]
+                        outline-none motion-safe:transition-[border-color,box-shadow] motion-safe:duration-150
+                        focus:border-[#1a4d2e] focus:ring-4 focus:ring-[#1a4d2e]/15"
                     />
                   )}
                 </div>
@@ -700,9 +772,23 @@ export default function SmartsheetIntegrationCard({
       <button
         type="submit"
         disabled={state.saving || noTokenYet}
-        className="w-full rounded-lg bg-[#1a4d2e] px-6 py-3.5 text-sm font-semibold uppercase tracking-wider text-white transition hover:bg-[#143d24] disabled:opacity-50"
+        className="inline-flex min-h-[48px] w-full items-center justify-center rounded-lg bg-[#1a4d2e] px-6 py-3
+          text-[14px] font-semibold tracking-tight text-white
+          shadow-[0_1px_0_rgba(0,0,0,0.06),inset_0_1px_0_rgba(255,255,255,0.06)]
+          motion-safe:transition-[background-color,transform,box-shadow] motion-safe:duration-150 motion-safe:ease-out
+          hover:bg-[#143d24] hover:shadow-[0_2px_4px_rgba(15,23,18,0.1),inset_0_1px_0_rgba(255,255,255,0.06)]
+          focus:outline-none focus-visible:ring-4 focus-visible:ring-[#1a4d2e]/30 focus-visible:ring-offset-2 focus-visible:ring-offset-[#fdfaf2]
+          active:scale-[0.985] active:bg-[#0f2e1c]
+          disabled:cursor-not-allowed disabled:opacity-50 disabled:hover:bg-[#1a4d2e]"
       >
-        {state.saving ? "Saving…" : "Save Settings"}
+        {state.saving ? (
+          <span className="inline-flex items-center gap-2">
+            <span className="h-4 w-4 animate-spin rounded-full border-2 border-white/30 border-t-white motion-reduce:animate-none" />
+            Saving…
+          </span>
+        ) : (
+          "Save changes"
+        )}
       </button>
 
       {noTokenYet && (
@@ -734,11 +820,17 @@ function Card({
   children: React.ReactNode;
 }) {
   return (
-    <section className="rounded-xl border border-[#d4d9d3] bg-white p-5 shadow-sm">
+    <section className="rounded-xl border border-[#d4d9d3] bg-white/95 p-6 shadow-[0_1px_2px_rgba(15,23,18,0.04),0_2px_6px_-2px_rgba(15,23,18,0.06)] motion-safe:transition-shadow">
-      <header className="mb-4 flex items-start justify-between gap-3">
+      <header className="mb-5 flex items-start justify-between gap-4">
         <div className="min-w-0 flex-1">
-          <h2 className="text-base font-semibold text-[#1d1d1f]">{title}</h2>
+          <h2 className="text-[15px] font-semibold tracking-tight text-[#1d1d1f]">
-          {subtitle && <p className="mt-0.5 text-xs text-[#5a5d5a]">{subtitle}</p>}
+            {title}
+          </h2>
+          {subtitle && (
+            <p className="mt-1 text-[13px] leading-snug text-[#5a5d5a]">
+              {subtitle}
+            </p>
+          )}
         </div>
         {action && <div className="shrink-0">{action}</div>}
       </header>
@@ -759,11 +851,15 @@ function ToggleRow({
   onChange: (v: boolean) => void;
 }) {
   return (
-    <div className="flex items-center justify-between gap-3">
+    <div className="flex items-center justify-between gap-4 py-1">
       <div className="min-w-0 flex-1">
-        <p className="text-sm font-medium text-[#1d1d1f]">{label}</p>
+        <p className="text-[14px] font-medium leading-snug text-[#1d1d1f]">
+          {label}
+        </p>
         {description && (
-          <p className="mt-0.5 text-xs text-[#5a5d5a]">{description}</p>
+          <p className="mt-0.5 text-[12.5px] leading-snug text-[#5a5d5a]">
+            {description}
+          </p>
         )}
       </div>
       <button
@@ -772,14 +868,17 @@ function ToggleRow({
         aria-checked={value}
         aria-label={label}
         onClick={() => onChange(!value)}
-        className={`relative inline-flex h-6 w-11 shrink-0 items-center rounded-full transition-colors ${
+        className={`group relative inline-flex h-[26px] w-[46px] shrink-0 items-center rounded-full
-          value ? "bg-[#1a4d2e]" : "bg-[#d4d9d3]"
+          motion-safe:transition-colors motion-safe:duration-200
-        }`}
+          focus:outline-none focus-visible:ring-4 focus-visible:ring-[#1a4d2e]/25 focus-visible:ring-offset-2 focus-visible:ring-offset-white
+          active:scale-[0.97] motion-safe:transition-transform motion-safe:ease-out
+          ${value ? "bg-[#1a4d2e]" : "bg-[#d4d9d3]"}`}
       >
         <span
-          className={`inline-block h-4 w-4 transform rounded-full bg-white shadow transition-transform ${
+          className={`inline-block h-[20px] w-[20px] transform rounded-full bg-white shadow-[0_1px_2px_rgba(0,0,0,0.2),0_1px_1px_rgba(0,0,0,0.06)]
-            value ? "translate-x-6" : "translate-x-1"
+            motion-safe:transition-transform motion-safe:duration-200
-          }`}
+            motion-safe:ease-[cubic-bezier(0.32,0.72,0,1)]
+            ${value ? "translate-x-[22px]" : "translate-x-[3px]"}`}
         />
       </button>
     </div>
@@ -789,20 +888,48 @@ function ToggleRow({
 function TestResultPanel({ test }: { test: TestState }) {
   if (test.state === "idle") return null;
   if (test.state === "loading") {
-    return <span className="text-sm text-[#5a5d5a]">Testing…</span>;
+    return (
+      <span className="inline-flex items-center gap-2 text-[13px] text-[#5a5d5a]">
+        <span className="h-3.5 w-3.5 animate-spin rounded-full border-2 border-[#d4d9d3] border-t-[#1a4d2e] motion-reduce:animate-none" />
+        Testing connection…
+      </span>
+    );
   }
   if (test.state === "ok") {
     return (
-      <div className="flex-1 rounded-lg border border-[#1a4d2e] bg-[#1a4d2e]/5 px-3 py-2 text-xs">
+      <div className="flex flex-1 items-start gap-2 rounded-lg border border-[#1a4d2e]/25 bg-[#1a4d2e]/[0.04] px-3 py-2 text-[13px]">
-        <p className="font-semibold text-[#1a4d2e]">
+        <span className="mt-0.5 inline-flex h-4 w-4 shrink-0 items-center justify-center rounded-full bg-[#1a4d2e] text-white">
-          ✓ Connected to &ldquo;{test.sheetName}&rdquo; ({test.columnCount} columns)
+          <svg viewBox="0 0 12 12" className="h-2.5 w-2.5" aria-hidden>
+            <path
+              d="M2 6.5L5 9.5L10 3.5"
+              stroke="currentColor"
+              strokeWidth="2"
+              fill="none"
+              strokeLinecap="round"
+              strokeLinejoin="round"
+            />
+          </svg>
+        </span>
+        <p className="text-[#1a4d2e]">
+          Connected to <span className="font-semibold">&ldquo;{test.sheetName}&rdquo;</span>{" "}
+          <span className="text-[#3a6649]">— {test.columnCount} columns loaded</span>
         </p>
       </div>
     );
   }
   return (
-    <div className="flex-1 rounded-lg border border-[#a4452b] bg-[#a4452b]/5 px-3 py-2 text-xs">
+    <div className="flex flex-1 items-start gap-2 rounded-lg border border-[#a4452b]/25 bg-[#a4452b]/[0.04] px-3 py-2 text-[13px]">
-      <p className="font-semibold text-[#a4452b]">✗ {test.message}</p>
+      <span className="mt-0.5 inline-flex h-4 w-4 shrink-0 items-center justify-center rounded-full bg-[#a4452b] text-white">
+        <svg viewBox="0 0 12 12" className="h-2.5 w-2.5" aria-hidden>
+          <path
+            d="M3 3L9 9M9 3L3 9"
+            stroke="currentColor"
+            strokeWidth="2"
+            strokeLinecap="round"
+          />
+        </svg>
+      </span>
+      <p className="text-[#a4452b]">{test.message}</p>
     </div>
   );
 }
@@ -848,7 +975,11 @@ function BackfillCard({
             onChange={(e) =>
               onRangeChange(e.target.value as "all" | "30d" | "7d")
             }
-            className="rounded-lg border border-[#d4d9d3] bg-white px-3 py-2 text-sm outline-none focus:border-[#1a4d2e] focus:ring-1 focus:ring-[#1a4d2e]"
+            className="min-h-[40px] rounded-lg border border-[#d4d9d3] bg-white px-3 py-2
+              text-[14px] text-[#1d1d1f]
+              outline-none motion-safe:transition-[border-color,box-shadow] motion-safe:duration-150
+              focus:border-[#1a4d2e] focus:ring-4 focus:ring-[#1a4d2e]/15
+              disabled:opacity-50"
             disabled={state.running}
           >
             <option value="all">All time</option>
@@ -859,9 +990,22 @@ function BackfillCard({
             type="button"
             onClick={onRun}
             disabled={state.running}
-            className="rounded-lg border border-[#1a4d2e] bg-white px-4 py-2 text-sm font-semibold text-[#1a4d2e] transition hover:bg-[#1a4d2e] hover:text-white disabled:opacity-50"
+            className="inline-flex min-h-[40px] items-center justify-center rounded-lg border border-[#1a4d2e] bg-white px-4 py-2
+              text-[14px] font-semibold text-[#1a4d2e]
+              motion-safe:transition-[background-color,color,transform] motion-safe:duration-150 motion-safe:ease-out
+              hover:bg-[#1a4d2e] hover:text-white
+              focus:outline-none focus-visible:ring-4 focus-visible:ring-[#1a4d2e]/25
+              active:scale-[0.97]
+              disabled:opacity-50 disabled:cursor-not-allowed"
           >
-            {state.running ? "Running backfill…" : "Run backfill"}
+            {state.running ? (
+              <span className="inline-flex items-center gap-2">
+                <span className="h-3.5 w-3.5 animate-spin rounded-full border-2 border-current border-r-transparent motion-reduce:animate-none" />
+                Running backfill…
+              </span>
+            ) : (
+              "Run backfill"
+            )}
           </button>
         </div>
 
@@ -873,15 +1017,48 @@ function BackfillCard({
         )}
 
         {showError && (
-          <div className="rounded-lg border border-[#a4452b] bg-[#a4452b]/5 px-3 py-2 text-xs">
+          <div
-            <p className="font-semibold text-[#a4452b]">✗ {result.error}</p>
+            role="alert"
+            aria-live="assertive"
+            className="flex items-start gap-2.5 rounded-lg border border-[#a4452b]/25 bg-[#a4452b]/[0.05] px-3 py-2.5 text-[13px]"
+          >
+            <span className="mt-0.5 inline-flex h-4 w-4 shrink-0 items-center justify-center rounded-full bg-[#a4452b] text-white">
+              <svg viewBox="0 0 12 12" className="h-2.5 w-2.5">
+                <path
+                  d="M3 3L9 9M9 3L3 9"
+                  stroke="currentColor"
+                  strokeWidth="2"
+                  strokeLinecap="round"
+                />
+              </svg>
+            </span>
+            <p className="font-medium leading-snug text-[#7a341f]">
+              {result.error}
+            </p>
           </div>
         )}
 
         {showResult && result && (
-          <div className="rounded-lg border border-[#1a4d2e] bg-[#1a4d2e]/5 px-3 py-2 text-xs">
+          <div
-            <p className="font-semibold text-[#1a4d2e]">
+            role="status"
-              ✓ Found {result.considered}{" "}
+            aria-live="polite"
+            className="flex items-start gap-2.5 rounded-lg border border-[#1a4d2e]/25 bg-[#1a4d2e]/[0.04] px-3 py-2.5 text-[13px]"
+          >
+            <span className="mt-0.5 inline-flex h-4 w-4 shrink-0 items-center justify-center rounded-full bg-[#1a4d2e] text-white">
+              <svg viewBox="0 0 12 12" className="h-2.5 w-2.5">
+                <path
+                  d="M2 6.5L5 9.5L10 3.5"
+                  stroke="currentColor"
+                  strokeWidth="2"
+                  fill="none"
+                  strokeLinecap="round"
+                  strokeLinejoin="round"
+                />
+              </svg>
+            </span>
+            <div className="text-[#143d24]">
+              <p className="font-medium leading-snug">
+                Found {result.considered}{" "}
                 {result.considered === 1 ? "entry" : "entries"} matching the
                 range
                 {result.considered > 0 && (
@@ -891,20 +1068,19 @@ function BackfillCard({
                     queued).
                   </>
                 )}
-              .
               </p>
               {(result.drained.synced +
                 result.drained.skipped +
                 result.drained.failed >
                 0 || result.drained.remaining > 0) && (
-              <p className="mt-1 text-[#1d1d1f]">
+                <p className="mt-1 leading-snug text-[#1a4d2e]/85">
                   Inline drain: {result.drained.synced} synced /{" "}
                   {result.drained.skipped} skipped / {result.drained.failed}{" "}
                   failed.
                   {result.drained.remaining > 0 && (
                     <>
                       {" "}
-                    <strong className="text-[#1a4d2e]">
+                      <strong className="font-semibold text-[#1a4d2e]">
                         {result.drained.remaining} still queued
                       </strong>{" "}
                       — they&apos;ll drain on the next cron tick (within 15
@@ -918,6 +1094,7 @@ function BackfillCard({
                 </p>
               )}
             </div>
+          </div>
         )}
       </div>
     </Card>
@@ -998,7 +1175,8 @@ const FIELD_SCHEMA: Array<{
 function SetupInstructionsModal({ onClose }: { onClose: () => void }) {
   return (
     <div
-      className="fixed inset-0 z-50 flex items-center justify-center bg-black/40 p-4"
+      className="smartsheet-fade-in fixed inset-0 z-50 flex items-end justify-center bg-black/40 p-0 backdrop-blur-[6px]
+        sm:items-center sm:p-4"
       role="dialog"
       aria-modal="true"
       aria-labelledby="smartsheet-setup-title"
@@ -1007,16 +1185,21 @@ function SetupInstructionsModal({ onClose }: { onClose: () => void }) {
         if (e.target === e.currentTarget) onClose();
       }}
     >
-      <div className="relative max-h-[90vh] w-full max-w-2xl overflow-y-auto rounded-xl border border-[#d4d9d3] bg-[#fdfaf2] shadow-xl">
+      <div
+        className="relative max-h-[92vh] w-full max-w-2xl overflow-y-auto rounded-t-2xl border border-[#d4d9d3]
+          bg-[#fdfaf2] shadow-[0_-12px_40px_-12px_rgba(15,23,18,0.2),0_24px_60px_-20px_rgba(15,23,18,0.25)]
+          smartsheet-sheet-up
+          sm:rounded-2xl"
+      >
         {/* Header */}
-        <header className="sticky top-0 z-10 flex items-start justify-between gap-4 border-b border-[#d4d9d3] bg-[#fdfaf2] px-6 py-4">
+        <header className="sticky top-0 z-10 flex items-start justify-between gap-4 border-b border-[#d4d9d3]/80 bg-[#fdfaf2]/95 px-6 py-4 backdrop-blur-sm">
           <div>
             <p className="text-[10px] font-mono uppercase tracking-[0.3em] text-[#8a6b3b]">
               § 05.1 — Setup
             </p>
             <h2
               id="smartsheet-setup-title"
-              className="mt-1 text-xl font-medium text-[#1a4d2e]"
+              className="mt-1 text-[22px] font-medium leading-tight tracking-tight text-[#1a4d2e]"
               style={{ fontFamily: "var(--font-display, Georgia, serif)" }}
             >
               Connect a Smartsheet
@@ -1026,13 +1209,19 @@ function SetupInstructionsModal({ onClose }: { onClose: () => void }) {
             type="button"
             onClick={onClose}
             aria-label="Close"
-            className="-mr-1 -mt-1 rounded-md p-2 text-[#5a5d5a] hover:bg-[#f4f1e8] hover:text-[#1d1d1f]"
+            className="-mr-2 -mt-1 inline-flex h-9 w-9 items-center justify-center rounded-full
+              text-[#5a5d5a]
+              motion-safe:transition-colors motion-safe:duration-150
+              hover:bg-[#f0ebde] hover:text-[#1d1d1f]
+              focus:outline-none focus-visible:ring-4 focus-visible:ring-[#1a4d2e]/25
+              active:scale-95 motion-safe:transition-transform motion-safe:ease-out"
           >
             <svg
               xmlns="http://www.w3.org/2000/svg"
               viewBox="0 0 20 20"
               fill="currentColor"
               className="h-5 w-5"
+              aria-hidden
             >
               <path
                 fillRule="evenodd"
@@ -1246,11 +1435,17 @@ function SetupInstructionsModal({ onClose }: { onClose: () => void }) {
         </div>
 
         {/* Footer */}
-        <footer className="sticky bottom-0 flex justify-end border-t border-[#d4d9d3] bg-[#fdfaf2] px-6 py-3">
+        <footer className="sticky bottom-0 flex justify-end gap-2 border-t border-[#d4d9d3]/80 bg-[#fdfaf2]/95 px-6 py-3 backdrop-blur-sm">
           <button
             type="button"
             onClick={onClose}
-            className="rounded-lg bg-[#1a4d2e] px-5 py-2 text-sm font-semibold text-white transition hover:bg-[#143d24]"
+            className="inline-flex min-h-[40px] items-center justify-center rounded-lg bg-[#1a4d2e] px-5
+              text-[14px] font-semibold tracking-tight text-white
+              shadow-[0_1px_0_rgba(0,0,0,0.06),inset_0_1px_0_rgba(255,255,255,0.06)]
+              motion-safe:transition-[background-color,transform] motion-safe:duration-150 motion-safe:ease-out
+              hover:bg-[#143d24]
+              focus:outline-none focus-visible:ring-4 focus-visible:ring-[#1a4d2e]/30
+              active:scale-[0.97] active:bg-[#0f2e1c]"
           >
             Got it
           </button>