diff --git a/src/App.jsx b/src/App.jsx
index 96bbcda..2c3518f 100644
--- a/src/App.jsx
+++ b/src/App.jsx
@@ -150,7 +150,7 @@ const css = `
   .btn-primary:active { filter: brightness(.85); transform: scale(.97); }
   .btn-ghost { background: var(--surface); color: var(--text-primary); border: 1px solid var(--border); }
   .btn-ghost:active { background: var(--border); }
-  .btn-icon { width: 36px; height: 36px; border-radius: 7px; display: flex; align-items: center;
+  .btn-icon { width: 44px; height: 44px; border-radius: 8px; display: flex; align-items: center;
     justify-content: center; background: var(--surface); border: 1px solid var(--border); cursor: pointer;
     font-size: 15px; transition: all .12s; flex-shrink: 0; }
   .btn-icon:active { transform: scale(.93); }
@@ -222,7 +222,7 @@ const css = `
     .screen-title { font-size: 11px; }
     .screen-body { padding: 8px 10px; gap: 8px; }
     .knob-wrap { transform: scale(.9); }
-    .btn-icon { width: 24px; height: 24px; font-size: 10px; }
+    .btn-icon { width: 44px; height: 44px; font-size: 12px; }
   }
 
   /* ── Responsive: landscape short ── */
@@ -377,7 +377,7 @@ function ParameterPanel({ block,params,onParamChange,onParamChangeEnd,viewMode,o
         <div style={{display:'flex',gap:4,alignItems:'center'}}>
           {onFocus&&<button className="btn" style={{padding:'4px 8px',fontSize:9,fontWeight:600,background:`${T.amber}22`,border:`1px solid ${T.amber}44`,color:T.amber,borderRadius:5,letterSpacing:'.04em',cursor:'pointer'}}
             onClick={onFocus}>🔍 Focus</button>}
-          <button className="btn-icon" style={{width:26,height:26,fontSize:11,flexShrink:0}}
+          <button className="btn-icon" style={{width:44,height:44,fontSize:14,flexShrink:0}}
             onClick={onToggleView}>{viewMode==='slider'?'◉':'▦'}</button>
         </div>
       </div>
@@ -422,7 +422,7 @@ function CapturesScreen({onClose}){
   const doSearch=async()=>{if(!query.trim())return;setLoading(true);try{const data=tab==="models"?await API.searchModels(query):await API.searchIrs(query);setResults(data.results||[]);}catch{setResults([]);}setLoading(false);};
   const install=async(item)=>{try{if(tab==="models"){await API.installModel(item.download_url,item.name);}else{await API.installIr(item.download_url,item.name);}API.listModels().then(d=>setModels(d.models||[])).catch(()=>{});}catch(e){alert("Install failed: "+e.message);}};
   return(<div style={{display:"flex",flexDirection:"column",height:"100%",background:T.bg}}>
-    <div className="screen-header"><div className="screen-title">Downloads</div><button className="btn-icon" style={{width:36,height:36,fontSize:13}}onClick={onClose}>✕</button></div>
+    <div className="screen-header"><div className="screen-title">Downloads</div><button className="btn-icon" style={{width:44,height:44,fontSize:16}}onClick={onClose}>✕</button></div>
     <div style={{padding:"6px 12px",borderBottom:`1px solid ${T.border}`}}><div className="toggle">
       <button className={`toggle-btn ${tab==="models"?"active":""}`}onClick={()=>setTab("models")}>NAM Models</button>
       <button className={`toggle-btn ${tab==="irs"?"active":""}`}onClick={()=>setTab("irs")}>IR Cabs</button></div></div>
@@ -831,7 +831,7 @@ export default function App(){
             padding:isLandscapeShort?"2px 10px":"4px 12px",background:T.panel,borderBottom:`1px solid ${T.border}`,flexShrink:0,minHeight:isLandscapeShort?26:32}}>
             <div style={{display:"flex",gap:8,alignItems:"center"}}>
               {/* Sidebar toggle (narrow only) */}
-              {isNarrow&&<button className="btn-icon" style={{width:24,height:24,fontSize:13,position:'relative',marginRight:-2}}
+              {isNarrow&&<button className="btn-icon" style={{width:44,height:44,fontSize:16,position:'relative',marginRight:-2}}
                 onClick={()=>setSidebarOpen(s=>!s)} title="Presets">
                 <span style={{fontSize:12,lineHeight:1}}>▤</span>
               </button>}
@@ -839,11 +839,11 @@ export default function App(){
                 background:state.connected?T.green:T.red,boxShadow:`0 0 6px ${state.connected?T.green:T.red}`}}/>
               {!isNarrow&&<span className="mono" style={{fontSize:9,color:state.connected?T.green:T.red}}>{state.connected?"CONNECTED":"OFFLINE"}</span>}
               {/* Undo/Redo */}
-              <button className="btn-icon" style={{width:20,height:20,fontSize:11,opacity:undoStack.length>0?1:0.3}}
+              <button className="btn-icon" style={{width:44,height:44,fontSize:14,opacity:undoStack.length>0?1:0.3}}
                 onClick={handleUndo} disabled={undoStack.length===0} title="Undo (Ctrl+Z)">
                 ↶
               </button>
-              <button className="btn-icon" style={{width:20,height:20,fontSize:11,opacity:redoStack.length>0?1:0.3}}
+              <button className="btn-icon" style={{width:44,height:44,fontSize:14,opacity:redoStack.length>0?1:0.3}}
                 onClick={handleRedo} disabled={redoStack.length===0} title="Redo (Ctrl+Shift+Z)">
                 ↷
               </button>
@@ -859,34 +859,34 @@ export default function App(){
                 <span className="mono" style={{fontSize:9,color:T.textSec}}>CPU <span style={{color:T.amber,fontWeight:700}}>{state.cpu_percent!=null?`${state.cpu_percent}%`:"—"}</span></span>
               </div>}
               <div style={{width:1,height:12,background:T.border}}/>
-              <button className="btn-icon" style={{width:24,height:24,position:'relative'}}onClick={()=>setView("captures")}title="Downloads">
+              <button className="btn-icon" style={{width:44,height:44,position:"relative"}}onClick={()=>setView("captures")} title="Downloads">
                 <img src={`${import.meta.env.BASE_URL}img/ic_bank.svg`} alt="captures" style={{width:14,height:14}}/>
               </button>
-              <button className="btn-icon" style={{width:24,height:24,position:'relative'}}onClick={()=>setView("presets")}title="Presets">
+              <button className="btn-icon" style={{width:44,height:44,position:"relative"}}onClick={()=>setView("presets")}title="Presets">
                 <img src={`${import.meta.env.BASE_URL}img/ic_presets.svg`} alt="presets" style={{width:14,height:14}}/>
               </button>
               <div style={{display:"flex",gap:2,alignItems:"center",background:T.surface,borderRadius:4,border:`1px solid ${T.border}`,padding:2,height:24}}>
                 {["stomp","preset"].map(m=>(<button key={m} onClick={()=>setFootswitchMode(m)} style={{
-                  padding:"1px 5px",borderRadius:3,border:"none",height:20,
+                  padding:"1px 5px",borderRadius:3,border:"none",height:44,
                   fontSize:8,fontWeight:700,letterSpacing:".04em",textTransform:"uppercase",
                   background:footswitchMode===m?T.amber:"transparent",
                   color:footswitchMode===m?"#000":T.textDim,
-                  cursor:"pointer",lineHeight:1.5,minWidth:34,display:"flex",alignItems:"center",justifyContent:"center",
+                  cursor:"pointer",lineHeight:1.5,minWidth:44,display:"flex",alignItems:"center",justifyContent:"center",
                 }}>{m==="stomp"?"SM":"PR"}</button>))}
               </div>
-              <button className="btn-icon" style={{width:24,height:24,position:'relative',
-                background:state.tuner_enabled?'rgba(128,208,160,.15)':T.surface,
-                borderColor:state.tuner_enabled?T.green:T.border}}
-                onClick={handleTunerToggle} title={state.tuner_enabled?"Exit Tuner":"Tuner"}>
+              <button className="btn-icon" style={{width:44,height:44,position:"relative",
+                              background:state.tuner_enabled?"rgba(128,208,160,.15)":T.surface,
+                              borderColor:state.tuner_enabled?T.green:T.border}}
+                              onClick={handleTunerToggle} title={state.tuner_enabled?"Exit Tuner":"Tuner"}>
                 <img src={`${import.meta.env.BASE_URL}img/fx_analyzer.svg`} alt="tuner" style={{width:14,height:14,filter:state.tuner_enabled?'brightness(0) saturate(100%) invert(0.9) sepia(0.4) hue-rotate(80deg)':'none'}}/>
               </button>
-              <button className="btn-icon" style={{width:24,height:24,position:'relative',background:'rgba(232,160,48,.12)',borderColor:T.amber}}onClick={()=>{if(!document.fullscreenElement){document.documentElement.requestFullscreen()}else{document.exitFullscreen()}}}title="Fullscreen">
+              <button className="btn-icon" style={{width:44,height:44,position:'relative',background:'rgba(232,160,48,.12)',borderColor:T.amber}}onClick={()=>{if(!document.fullscreenElement){document.documentElement.requestFullscreen()}else{document.exitFullscreen()}}}title="Fullscreen">
                 <svg viewBox="0 0 24 24" width="14" height="14" fill="#E8A030">
                   <path d="M7 14H5v5h5v-2H7v-3zm-2-4h2V7h3V5H5v5zm12 7h-3v2h5v-5h-2v3zM14 5v2h3v3h2V5h-5z"/>
                 </svg>
               </button>
               <div style={{width:1,height:16,background:T.border}}/>
-              <button className="btn-icon" style={{width:24,height:24,position:'relative'}}
+              <button className="btn-icon" style={{width:44,height:44,position:"relative"}}
                 onClick={()=>setMenuOpen(true)} title="Main Menu">
                 <span style={{fontSize:14,color:T.amber,lineHeight:1}}>☰</span>
               </button>
@@ -1027,7 +1027,7 @@ export default function App(){
       {view==="captures"&&<CapturesScreen onClose={()=>setView("main")}/>}
       {view==="presets"&&(
         <div style={{display:"flex",flexDirection:"column",height:"100%",background:T.bg}}>
-          <div className="screen-header"><div className="screen-title">Presets</div><button className="btn-icon"style={{width:36,height:36,fontSize:13}}onClick={()=>setView("main")}>✕</button></div>
+          <div className="screen-header"><div className="screen-title">Presets</div><button className="btn-icon"style={{width:44,height:44,fontSize:16}}onClick={()=>setView("main")}>✕</button></div>
           <div className="screen-body">
             {presets.map((p,i)=>(
               <div key={i} className={`preset-row ${p.num===currentPreset?"active":""}`}
@@ -1102,7 +1102,7 @@ export default function App(){
           <div className="card" style={{width:320,maxWidth:"85vw",padding:20}}>
             <div style={{display:"flex",justifyContent:"space-between",alignItems:"center",marginBottom:16}}>
               <div style={{fontSize:14,fontWeight:600,color:T.textPrimary}}>💾 Save Preset</div>
-              <button className="btn-icon" style={{width:26,height:26,fontSize:12}}onClick={()=>setOverlayView(null)}>✕</button>
+              <button className="btn-icon" style={{width:44,height:44,fontSize:14}}onClick={()=>setOverlayView(null)}>✕</button>
             </div>
             <div style={{display:"flex",flexDirection:"column",gap:12}}>
               <div>
@@ -1133,12 +1133,12 @@ export default function App(){
           <div className="card" style={{width:340,maxWidth:"85vw",padding:20}}>
             <div style={{display:"flex",justifyContent:"space-between",alignItems:"center",marginBottom:16}}>
               <div style={{fontSize:14,fontWeight:600,color:T.textPrimary}}>🔌 Bypass / Control</div>
-              <button className="btn-icon" style={{width:26,height:26,fontSize:12}}onClick={()=>setOverlayView(null)}>✕</button>
+              <button className="btn-icon" style={{width:44,height:44,fontSize:14}}onClick={()=>setOverlayView(null)}>✕</button>
             </div>
             <div style={{display:"flex",flexDirection:"column",gap:14}}>
               <div style={{display:"flex",justifyContent:"space-between",alignItems:"center"}}>
                 <span style={{fontSize:12,color:T.textPrimary}}>🚫 Global Bypass</span>
-                <button className="btn-icon" style={{width:40,height:26,fontSize:10,background:globalBypass?`${T.red}22`:T.surface,borderColor:globalBypass?T.red:T.border}}
+                <button className="btn-icon" style={{width:44,height:44,fontSize:10,background:globalBypass?`${T.red}22`:T.surface,borderColor:globalBypass?T.red:T.border}}
                   onClick={()=>{setGlobalBypass(p=>!p);API.bypassToggle().catch(()=>{});}}>
                   {globalBypass?"ON":"OFF"}
                 </button>
@@ -1149,7 +1149,7 @@ export default function App(){
                 {blocks.map(b=>(
                   <div key={b.id} style={{display:"flex",justifyContent:"space-between",alignItems:"center",padding:"4px 0"}}>
                     <span style={{fontSize:11,color:T.textPrimary}}>{b.name||b.type}</span>
-                    <button className="btn-icon" style={{width:36,height:22,fontSize:9,background:b.bypassed?`${T.red}22`:T.surface,borderColor:b.bypassed?T.red:T.border}}
+                    <button className="btn-icon" style={{width:44,height:44,fontSize:11,background:b.bypassed?`${T.red}22`:T.surface,borderColor:b.bypassed?T.red:T.border}}
                       onClick={()=>handleToggleBlock(b.id)}>
                       {b.bypassed?"BYP":"ACT"}
                     </button>
@@ -1180,12 +1180,12 @@ export default function App(){
           <div className="card" style={{width:340,maxWidth:"85vw",padding:20}}>
             <div style={{display:"flex",justifyContent:"space-between",alignItems:"center",marginBottom:16}}>
               <div style={{fontSize:14,fontWeight:600,color:T.textPrimary}}>📶 Wireless</div>
-              <button className="btn-icon" style={{width:26,height:26,fontSize:12}}onClick={()=>setOverlayView(null)}>✕</button>
+              <button className="btn-icon" style={{width:44,height:44,fontSize:14}}onClick={()=>setOverlayView(null)}>✕</button>
             </div>
             <div style={{display:"flex",flexDirection:"column",gap:14}}>
               <div style={{display:"flex",justifyContent:"space-between",alignItems:"center"}}>
                 <span style={{fontSize:12,color:T.textPrimary}}>📶 Wi‑Fi</span>
-                <button className="btn-icon" style={{width:40,height:26,fontSize:10}}>Scan</button>
+                <button className="btn-icon" style={{width:44,height:44,fontSize:11}}>Scan</button>
               </div>
               <div className="card-sm" style={{textAlign:"center",padding:16}}>
                 <span style={{fontSize:11,color:T.textSec}}>Use pedal as access point or connect to existing network via the settings panel.</span>
@@ -1193,7 +1193,7 @@ export default function App(){
               <div style={{height:1,background:T.border}}/>
               <div style={{display:"flex",justifyContent:"space-between",alignItems:"center"}}>
                 <span style={{fontSize:12,color:T.textPrimary}}>🔵 Bluetooth</span>
-                <button className="btn-icon" style={{width:40,height:26,fontSize:10,background:`${T.blue}22`,borderColor:T.blue,color:T.blue}}>ON</button>
+                <button className="btn-icon" style={{width:44,height:44,fontSize:11,background:`${T.blue}22`,borderColor:T.blue,color:T.blue}}>ON</button>
               </div>
               <div style={{fontSize:10,color:T.textSec}}>Bluetooth MIDI is enabled. Pair with your mobile device or MIDI controller.</div>
             </div>
@@ -1208,7 +1208,7 @@ export default function App(){
           <div className="card" style={{width:320,maxWidth:"85vw",padding:20,maxHeight:"80vh",overflowY:"auto"}}>
             <div style={{display:"flex",justifyContent:"space-between",alignItems:"center",marginBottom:12}}>
               <div style={{fontSize:13,fontWeight:600,color:T.textPrimary}}>+ Add Block</div>
-              <button className="btn-icon" style={{width:24,height:24,fontSize:11}}onClick={()=>setAddBlockType(null)}>✕</button>
+              <button className="btn-icon" style={{width:44,height:44,fontSize:14}}onClick={()=>setAddBlockType(null)}>✕</button>
             </div>
             <div style={{display:"grid",gridTemplateColumns:"1fr 1fr",gap:6}}>
               {Object.entries(BLOCK_DISPLAY_NAMES).filter(([k])=>!["loop","split","merge"].includes(k)).map(([type,name])=>(
diff --git a/src/FocusView.jsx b/src/FocusView.jsx
index 096c888..62831d5 100644
--- a/src/FocusView.jsx
+++ b/src/FocusView.jsx
@@ -164,7 +164,7 @@ function FocusSlider({ label, value = 50, onChange, onChangeEnd, min = 0, max =
         <span style={{ fontSize: 11, fontWeight: 500, textTransform: 'uppercase', letterSpacing: '.06em', color }}>{label}</span>
         <div style={{ display: 'flex', gap: 8, alignItems: 'center' }}>
           <button style={{
-            width: 34, height: 34, borderRadius: '50%', border: `1px solid ${T.border}`,
+            width: 44, height: 44, borderRadius: '50%', border: `1px solid ${T.border}`,
             background: T.panel, color: T.textPrimary, fontSize: 16, fontWeight: 700,
             display: 'flex', alignItems: 'center', justifyContent: 'center', cursor: 'pointer',
             lineHeight: 1,
@@ -174,7 +174,7 @@ function FocusSlider({ label, value = 50, onChange, onChangeEnd, min = 0, max =
             minWidth: 40, textAlign: 'center',
           }}>{touchVal ?? value}</span>
           <button style={{
-            width: 34, height: 34, borderRadius: '50%', border: `1px solid ${T.border}`,
+            width: 44, height: 44, borderRadius: '50%', border: `1px solid ${T.border}`,
             background: T.panel, color: T.textPrimary, fontSize: 16, fontWeight: 700,
             display: 'flex', alignItems: 'center', justifyContent: 'center', cursor: 'pointer',
             lineHeight: 1,
@@ -336,7 +336,7 @@ export default function FocusView({
         <div style={{ display: 'flex', alignItems: 'center', gap: 10, minWidth: 0 }}>
           <button onClick={onClose}
             style={{
-              width: 34, height: 34, borderRadius: 8,
+              width: 44, height: 44, borderRadius: 8,
               display: 'flex', alignItems: 'center', justifyContent: 'center',
               background: T.surface, border: `1px solid ${T.border}`,
               color: T.textPrimary, fontSize: 16, cursor: 'pointer',
diff --git a/src/GlobalSettings.jsx b/src/GlobalSettings.jsx
index f6cd1c4..79a9679 100644
--- a/src/GlobalSettings.jsx
+++ b/src/GlobalSettings.jsx
@@ -169,7 +169,7 @@ function SettingsSlider({ label, value, min, max, unit, onChange }) {
         <span style={{ fontSize: 11, fontWeight: 500, color: T.textSec }}>{label}</span>
         <div style={{ display: "flex", gap: 6, alignItems: "center" }}>
           <button style={{
-            width: 26, height: 26, borderRadius: "50%", border: `1px solid ${T.border}`,
+            width: 44, height: 44, borderRadius: "50%", border: `1px solid ${T.border}`,
             background: T.panel, color: T.textPrimary, fontSize: 14, fontWeight: 700,
             display: "flex", alignItems: "center", justifyContent: "center", cursor: "pointer", lineHeight: 1,
           }} onMouseDown={quick(-1)} onTouchStart={quick(-1)}>−</button>
@@ -178,7 +178,7 @@ function SettingsSlider({ label, value, min, max, unit, onChange }) {
             minWidth: 36, textAlign: "center",
           }}>{value}{unit}</span>
           <button style={{
-            width: 26, height: 26, borderRadius: "50%", border: `1px solid ${T.border}`,
+            width: 44, height: 44, borderRadius: "50%", border: `1px solid ${T.border}`,
             background: T.panel, color: T.textPrimary, fontSize: 14, fontWeight: 700,
             display: "flex", alignItems: "center", justifyContent: "center", cursor: "pointer", lineHeight: 1,
           }} onMouseDown={quick(1)} onTouchStart={quick(1)}>+</button>
@@ -392,7 +392,7 @@ export default function GlobalSettings({ onClose, onMasterVolume, onAudioProfile
     <div style={{ position: "fixed", inset: 0, zIndex: 998, display: "flex", flexDirection: "column", background: T.bg, color: T.textPrimary, fontFamily: "'Space Grotesk', sans-serif" }}>
       <div style={{ display: "flex", alignItems: "center", justifyContent: "space-between", padding: "10px 14px", borderBottom: `1px solid ${T.border}`, background: T.panel, flexShrink: 0 }}>
         <div style={{ display: "flex", alignItems: "center", gap: 10 }}>
-          <button onClick={onClose} style={{ width: 34, height: 34, borderRadius: 8, display: "flex", alignItems: "center", justifyContent: "center", background: T.surface, border: `1px solid ${T.border}`, color: T.textPrimary, fontSize: 16, cursor: "pointer" }}>✕</button>
+          <button onClick={onClose} style={{ width: 44, height: 44, borderRadius: 8, display: "flex", alignItems: "center", justifyContent: "center", background: T.surface, border: `1px solid ${T.border}`, color: T.textPrimary, fontSize: 16, cursor: "pointer" }}>✕</button>
           <div>
             <div style={{ fontSize: 15, fontWeight: 600 }}>Settings</div>
             {!loaded && <span style={{ fontSize: 10, color: T.textDim }}>Loading…</span>}
diff --git a/src/index.css b/src/index.css
index c6eaf2b..f68ccaf 100644
--- a/src/index.css
+++ b/src/index.css
@@ -42,9 +42,11 @@ body { background: #0A0A0C; color: #F0EDE6; font-family: 'Space Grotesk', sans-s
 .btn-ghost { background: transparent; border-color: transparent; }
 .btn-danger { border-color: #E06060; background: rgba(224,96,96,.15); color: #E06060; }
 .btn-icon { display: inline-flex; align-items: center; justify-content: center;
-  width: 28px; height: 28px; border-radius: 5px; border: 1px solid #2A2A32;
+  width: 44px; height: 44px; border-radius: 8px; border: 1px solid #2A2A32;
   background: #1C1C22; cursor: pointer; transition: all .12s; touch-action: manipulation; }
 .btn-icon:active { transform: scale(.92); }
+.btn:focus-visible { outline: 2px solid #3AB87A; outline-offset: 2px; }
+.btn-icon:focus-visible { outline: 2px solid #3AB87A; outline-offset: 2px; }
 
 /* Slide panel (bottom drawer) */
 .slide-panel { position: fixed; inset: 0; background: rgba(0,0,0,.7); z-index: 100;
@@ -186,9 +188,9 @@ body { background: #0A0A0C; color: #F0EDE6; font-family: 'Space Grotesk', sans-s
     font-size: 11px;
   }
   .btn-icon {
-    width: 24px;
-    height: 24px;
-    font-size: 10px;
+    width: 44px;
+    height: 44px;
+    font-size: 12px;
   }
   .card {
     padding: 10px;