diff --git a/frontend/src/tools/nachrichten.jsx b/frontend/src/tools/nachrichten.jsx
index 096d005..d8fbbd0 100644
--- a/frontend/src/tools/nachrichten.jsx
+++ b/frontend/src/tools/nachrichten.jsx
@@ -82,6 +82,8 @@ export default function Nachrichten({ toast, mobile }) {
   const [text,        setText]        = useState('');
   const [sending,     setSending]     = useState(false);
   const [showPicker,  setShowPicker]  = useState(false);
+  const [mirc,        setMirc]        = useState(() => localStorage.getItem('dd_chat_design') === 'mirc');
+  const toggleDesign = () => setMirc(v => { const n = !v; localStorage.setItem('dd_chat_design', n ? 'mirc' : 'modern'); return n; });
   const bottomRef = useRef(null);
   const pollRef   = useRef(null);
   const pickerRef = useRef(null);
@@ -244,10 +246,19 @@ export default function Nachrichten({ toast, mobile }) {
           <div style={{ padding:'16px 14px 12px', borderBottom:'1px solid rgba(255,255,255,0.06)',
             display:'flex', alignItems:'center', justifyContent:'space-between' }}>
             <div style={{ ...S.head, marginBottom:0 }}>NACHRICHTEN</div>
-            <button onClick={() => { loadUsers(); if (activeUser) loadMessages(activeUser.id); }} title="Neu laden"
-              style={{ background:'transparent', border:'1px solid rgba(255,255,255,0.1)', borderRadius:7,
-                color:'rgba(255,255,255,0.35)', cursor:'pointer', padding:'3px 8px',
-                fontSize:13, fontFamily:'monospace', lineHeight:1 }}>↺</button>
+            <div style={{ display:'flex', gap:5 }}>
+              <button onClick={toggleDesign} title={mirc ? 'Modern' : 'mIRC-Stil'}
+                style={{ background: mirc ? 'rgba(78,205,196,0.12)' : 'transparent',
+                  border:`1px solid ${mirc ? 'rgba(78,205,196,0.3)' : 'rgba(255,255,255,0.1)'}`,
+                  borderRadius:7, color: mirc ? '#4ecdc4' : 'rgba(255,255,255,0.35)',
+                  cursor:'pointer', padding:'3px 7px', fontSize:10, fontFamily:'monospace', lineHeight:1 }}>
+                {mirc ? '◈ mIRC' : '◈'}
+              </button>
+              <button onClick={() => { loadUsers(); if (activeUser) loadMessages(activeUser.id); }} title="Neu laden"
+                style={{ background:'transparent', border:'1px solid rgba(255,255,255,0.1)', borderRadius:7,
+                  color:'rgba(255,255,255,0.35)', cursor:'pointer', padding:'3px 8px',
+                  fontSize:13, fontFamily:'monospace', lineHeight:1 }}>↺</button>
+            </div>
           </div>
           <div style={{ flex:1, overflowY:'auto' }}>
             {users.length === 0 ? (
@@ -349,7 +360,10 @@ export default function Nachrichten({ toast, mobile }) {
               </div>
 
               {/* Nachrichten */}
-              <div style={{ flex:1, overflowY:'auto', padding:'14px', display:'flex', flexDirection:'column', gap:10 }}>
+              <div style={{ flex:1, overflowY:'auto', padding: mirc ? '0' : '14px',
+                display:'flex', flexDirection:'column', gap: mirc ? 0 : 10,
+                background: mirc ? '#000' : undefined,
+                fontFamily: mirc ? "'Courier New', Courier, monospace" : undefined }}>
                 {!activeUser.public_key && (
                   <InfoBox color="#ffe66d">
                     ⚠ Dieser Benutzer hat die Nachrichten noch nicht geöffnet und besitzt noch kein Schlüsselpaar.
@@ -357,90 +371,120 @@ export default function Nachrichten({ toast, mobile }) {
                 )}
                 {sharedKey === 'error' && (
                   <InfoBox color="#ff6b9d">
-                    ⚠ Schlüssel inkompatibel – der Empfänger verwendet ein anderes Schlüsselformat (z. B. altes P-256).
+                    ⚠ Schlüssel inkompatibel – der Empfänger verwendet ein anderes Schlüsselformat.
                     Er muss in Einstellungen → Sicherheit einen neuen Schlüssel generieren.
                   </InfoBox>
                 )}
                 {messages.length === 0 && activeUser.public_key && sharedKey !== 'error' && (
                   <div style={{ flex:1, display:'flex', alignItems:'center', justifyContent:'center',
-                    color:'rgba(255,255,255,0.18)', fontFamily:'monospace', fontSize:11 }}>
-                    Noch keine Nachrichten
+                    color: mirc ? '#808080' : 'rgba(255,255,255,0.18)',
+                    fontFamily: mirc ? "'Courier New', monospace" : 'monospace', fontSize:11 }}>
+                    {mirc ? '*** Noch keine Nachrichten ***' : 'Noch keine Nachrichten'}
                   </div>
                 )}
-                {/* Hinweis wenn Nachrichten nicht entschlüsselt werden können */}
                 {Object.values(decrypted).some(v => v === null) && (
                   <InfoBox color="#ffe66d">
-                    🔑 Einige Nachrichten können nicht entschlüsselt werden – dein privater Schlüssel passt nicht mehr.{' '}
-                    Importiere deinen alten Schlüssel unter{' '}
-                    <strong>Einstellungen → Sicherheit → Schlüssel importieren</strong>,
-                    oder erzeuge einen neuen Schlüssel (löscht alle bisherigen Nachrichten).
+                    🔑 Einige Nachrichten können nicht entschlüsselt werden.
+                    Importiere deinen alten Schlüssel unter Einstellungen → Sicherheit.
                   </InfoBox>
                 )}
-                {messages.map(m => {
-                  const isMine = !!m.is_mine;
-                  const txt    = decrypted[m.id];
-                  return (
-                    <div key={m.id} style={{ display:'flex',
-                      justifyContent: isMine ? 'flex-end' : 'flex-start', gap:6, alignItems:'flex-end' }}>
-                      {!isMine && (
-                        <div style={{ width:22, height:22, borderRadius:'50%', flexShrink:0,
-                          background:'rgba(255,255,255,0.04)', border:'1px solid rgba(255,255,255,0.07)',
-                          display:'flex', alignItems:'center', justifyContent:'center' }}>
-                          <UserIcon size={10} color="rgba(255,255,255,0.4)"/>
-                        </div>
-                      )}
-                      <div style={{ maxWidth:'75%', display:'flex', flexDirection:'column',
-                        alignItems: isMine ? 'flex-end' : 'flex-start', gap:4 }}>
-                        <div style={{
-                          background: isMine ? 'rgba(78,205,196,0.09)' : 'rgba(255,255,255,0.04)',
-                          border: `1px solid ${isMine ? 'rgba(78,205,196,0.15)' : 'rgba(255,255,255,0.07)'}`,
-                          borderRadius: isMine ? '12px 12px 3px 12px' : '12px 12px 12px 3px',
-                          padding:'8px 12px',
-                        }}>
-                          {txt === undefined ? (
-                            <span style={{ color:'rgba(255,255,255,0.18)', fontSize:12 }}>⋯</span>
-                          ) : txt === null ? (
-                            <span style={{ color:'rgba(255,107,157,0.5)', fontSize:11, fontFamily:'monospace' }}>
-                              🔒 Nicht entschlüsselbar
-                            </span>
-                          ) : (
-                            <span style={{ color:'#e6e6e6', fontSize:13, fontFamily:'monospace',
-                              lineHeight:1.55, whiteSpace:'pre-wrap', wordBreak:'break-word' }}>{txt}</span>
-                          )}
-                        </div>
-                        <div style={{ display:'flex', alignItems:'center', gap:5 }}>
-                          <span style={{ color:'rgba(255,255,255,0.18)', fontSize:9, fontFamily:'monospace', whiteSpace:'nowrap' }}>
-                            {formatMsgTime(m.created_at)}
+
+                {mirc ? (
+                  /* ── mIRC Design ─────────────────────────────────────── */
+                  <div style={{ padding:'4px 0' }}>
+                    {messages.map(m => {
+                      const isMine = !!m.is_mine;
+                      const txt    = decrypted[m.id];
+                      const time   = m.created_at ? (() => { const d = new Date(m.created_at.replace(' ','T')); return isNaN(d)?'':d.toLocaleTimeString('de-DE',{hour:'2-digit',minute:'2-digit'}); })() : '';
+                      const nick   = isMine ? 'du' : activeUser.username;
+                      const nickColor = isMine ? '#00ff00' : '#00ffff';
+                      return (
+                        <div key={m.id} style={{ display:'flex', alignItems:'baseline', gap:0,
+                          padding:'1px 8px', lineHeight:1.5,
+                          background: isMine ? 'rgba(0,255,0,0.03)' : 'transparent' }}
+                          onMouseEnter={e=>e.currentTarget.style.background='rgba(255,255,255,0.04)'}
+                          onMouseLeave={e=>e.currentTarget.style.background=isMine?'rgba(0,255,0,0.03)':'transparent'}>
+                          <span style={{ color:'#808080', fontSize:11, flexShrink:0, marginRight:2 }}>[{time}]</span>
+                          <span style={{ color:'#808080', fontSize:11, flexShrink:0, marginRight:2 }}>&lt;</span>
+                          <span style={{ color:nickColor, fontSize:11, fontWeight:700, flexShrink:0 }}>{nick}</span>
+                          <span style={{ color:'#808080', fontSize:11, flexShrink:0, marginRight:6 }}>&gt;</span>
+                          <span style={{ color: txt===null?'#404040':'#d0d0d0', fontSize:12, wordBreak:'break-word', flex:1 }}>
+                            {txt===undefined ? '…' : txt===null ? '[verschlüsselt]' : txt}
                           </span>
-                          {isMine && (
-                            <span title={m.read_by_recipient ? 'Gelesen' : 'Gesendet'}
-                              style={{ fontSize:10, lineHeight:1, color: m.read_by_recipient ? '#4ecdc4' : 'rgba(255,255,255,0.2)' }}>
-                              {m.read_by_recipient ? '✓✓' : '✓'}
-                            </span>
-                          )}
+                          {isMine && m.read_by_recipient && <span style={{color:'#004400',fontSize:9,marginLeft:4,flexShrink:0}}>✓✓</span>}
                           <button onClick={() => deleteMsg(m.id)} style={{ background:'transparent', border:'none',
-                            cursor:'pointer', padding:'0 2px', opacity:0.3, lineHeight:1,
-                            display:'flex', alignItems:'center' }}>
-                            <TrashIcon size={10} color="#ff6b9d"/>
-                          </button>
+                            cursor:'pointer', color:'#400000', fontSize:9, padding:'0 0 0 6px', flexShrink:0, opacity:0.5 }}>✕</button>
                         </div>
-                      </div>
-                    </div>
-                  );
-                })}
+                      );
+                    })}
+                  </div>
+                ) : (
+                  /* ── Modernes Design ─────────────────────────────────── */
+                  <>
+                    {messages.map(m => {
+                      const isMine = !!m.is_mine;
+                      const txt    = decrypted[m.id];
+                      return (
+                        <div key={m.id} style={{ display:'flex',
+                          justifyContent: isMine ? 'flex-end' : 'flex-start', gap:6, alignItems:'flex-end' }}>
+                          {!isMine && (
+                            <div style={{ width:22, height:22, borderRadius:'50%', flexShrink:0,
+                              background:'rgba(255,255,255,0.04)', border:'1px solid rgba(255,255,255,0.07)',
+                              display:'flex', alignItems:'center', justifyContent:'center', fontSize:10 }}>👤</div>
+                          )}
+                          <div style={{ maxWidth:'75%', display:'flex', flexDirection:'column',
+                            alignItems: isMine ? 'flex-end' : 'flex-start', gap:4 }}>
+                            <div style={{
+                              background: isMine ? 'rgba(78,205,196,0.09)' : 'rgba(255,255,255,0.04)',
+                              border: `1px solid ${isMine ? 'rgba(78,205,196,0.15)' : 'rgba(255,255,255,0.07)'}`,
+                              borderRadius: isMine ? '12px 12px 3px 12px' : '12px 12px 12px 3px',
+                              padding:'8px 12px',
+                            }}>
+                              {txt === undefined ? (
+                                <span style={{ color:'rgba(255,255,255,0.18)', fontSize:12 }}>⋯</span>
+                              ) : txt === null ? (
+                                <span style={{ color:'rgba(255,107,157,0.5)', fontSize:11, fontFamily:'monospace' }}>🔒 Nicht entschlüsselbar</span>
+                              ) : (
+                                <span style={{ color:'#e6e6e6', fontSize:13, fontFamily:'monospace',
+                                  lineHeight:1.55, whiteSpace:'pre-wrap', wordBreak:'break-word' }}>{txt}</span>
+                              )}
+                            </div>
+                            <div style={{ display:'flex', alignItems:'center', gap:5 }}>
+                              <span style={{ color:'rgba(255,255,255,0.18)', fontSize:9, fontFamily:'monospace', whiteSpace:'nowrap' }}>
+                                {formatMsgTime(m.created_at)}
+                              </span>
+                              {isMine && (
+                                <span title={m.read_by_recipient ? 'Gelesen' : 'Gesendet'}
+                                  style={{ fontSize:10, lineHeight:1, color: m.read_by_recipient ? '#4ecdc4' : 'rgba(255,255,255,0.2)' }}>
+                                  {m.read_by_recipient ? '✓✓' : '✓'}
+                                </span>
+                              )}
+                              <button onClick={() => deleteMsg(m.id)} style={{ background:'transparent', border:'none',
+                                cursor:'pointer', padding:'0 2px', opacity:0.3, lineHeight:1,
+                                display:'flex', alignItems:'center' }}>
+                                <TrashIcon size={10} color="#ff6b9d"/>
+                              </button>
+                            </div>
+                          </div>
+                        </div>
+                      );
+                    })}
+                  </>
+                )}
                 <div ref={bottomRef}/>
               </div>
 
               {/* Eingabe */}
-              <div style={{ padding:'10px 14px', borderTop:'1px solid rgba(255,255,255,0.06)',
-                background:'#0d0d0f', flexShrink:0 }}>
+              <div style={{ padding:'10px 14px', flexShrink:0,
+                borderTop:`1px solid ${mirc?'#333':'rgba(255,255,255,0.06)'}`,
+                background: mirc ? '#000' : '#0d0d0f' }}>
                 {!activeUser.public_key || sharedKey === 'error' ? (
                   <div style={{ color:'rgba(255,255,255,0.2)', fontSize:11, fontFamily:'monospace',
                     textAlign:'center', padding:'8px 0' }}>
                     Senden nicht möglich
                   </div>
                 ) : (
-                  <div style={{ display:'flex', gap:8, alignItems:'flex-end', position:'relative' }}>
+                  <div style={{ display:'flex', gap:8, alignItems:'stretch', position:'relative' }}>
                     <div ref={pickerRef} style={{ position:'absolute', bottom:'100%', right:0 }}>
                       {showPicker && (
                         <EmojiPicker
@@ -449,16 +493,17 @@ export default function Nachrichten({ toast, mobile }) {
                         />
                       )}
                     </div>
+                    {mirc && (
+                      <span style={{ color:'#00ff00', fontFamily:"'Courier New',monospace", fontSize:12,
+                        alignSelf:'center', flexShrink:0 }}>[du]</span>
+                    )}
                     <textarea
                       value={text}
                       onChange={e => {
                         const val = e.target.value;
                         const last = val[val.length - 1];
-                        if (last === ' ' || last === '\n') {
-                          setText(convertEmojis(val));
-                        } else {
-                          setText(val);
-                        }
+                        if (last === ' ' || last === '\n') setText(convertEmojis(val));
+                        else setText(val);
                       }}
                       onFocus={() => setShowPicker(false)}
                       onKeyDown={e => {
@@ -469,18 +514,18 @@ export default function Nachrichten({ toast, mobile }) {
                           send(converted);
                         }
                       }}
-                      placeholder="Nachricht… (Enter senden · Shift+Enter neue Zeile)"
+                      placeholder={mirc ? 'Nachricht…' : 'Nachricht… (Enter senden · Shift+Enter neue Zeile)'}
                       rows={2}
-                      style={{ ...S.inp, resize:'none', flex:1, fontSize:13, padding:'8px 10px',
-                        lineHeight:1.45, minHeight:42 }}
+                      style={{ ...S.inp, resize:'none', flex:1, fontSize: mirc ? 12 : 13,
+                        padding:'8px 10px', lineHeight:1.45, minHeight:42,
+                        ...(mirc ? { background:'#111', border:'1px solid #444', color:'#d0d0d0',
+                          fontFamily:"'Courier New',monospace", borderRadius:2 } : {}) }}
                     />
-                    <div style={{ display:'flex', flexDirection:'column', gap:4, flexShrink:0, alignSelf:'stretch' }}>
-                      <button onClick={() => setShowPicker(v => !v)} style={{
-                        background: showPicker ? 'rgba(78,205,196,0.12)' : 'rgba(255,255,255,0.05)',
-                        border:`1px solid ${showPicker ? 'rgba(78,205,196,0.3)' : 'rgba(255,255,255,0.1)'}`,
-                        borderRadius:8, cursor:'pointer', fontSize:17, lineHeight:1,
-                        padding:'5px 8px', flexShrink:0, alignSelf:'flex-end' }}>😊</button>
-                    </div>
+                    <button onClick={() => setShowPicker(v => !v)} style={{
+                      background: showPicker ? 'rgba(78,205,196,0.12)' : (mirc ? '#111' : 'rgba(255,255,255,0.05)'),
+                      border:`1px solid ${showPicker ? 'rgba(78,205,196,0.3)' : (mirc ? '#444' : 'rgba(255,255,255,0.1)')}`,
+                      borderRadius: mirc ? 2 : 8, cursor:'pointer', fontSize:17,
+                      padding:'0 10px', flexShrink:0, alignSelf:'stretch' }}>😊</button>
                   </div>
                 )}
               </div>