:root{--bg:#f0f0f0;--text:#111;--key-bg:#fff;--key-border:#ccc;--key-hover:#ddd}body.dark{--bg:#1e1e1e;--text:#eee;--key-bg:#333;--key-border:#555;--key-hover:#444}body{background-color:var(--bg);color:var(--text);font-family:'Vazir',Tahoma,Arial,sans-serif;max-width:900px;margin:30px auto;padding:20px;transition:background 0.3s,color 0.3s;direction:rtl}.keyboard,textarea{font-family:'Vazir',Tahoma,Arial,sans-serif}.toolbar{display:flex;justify-content:space-between;align-items:center}textarea{width:100%;height:150px;font-size:18px;padding:10px;margin:20px 0 10px 0;border-radius:6px;border:1px solid var(--key-border);background:var(--key-bg);color:var(--text);direction:rtl;resize:vertical}button{padding:10px 16px;font-size:14px;background-color:#4caf50;color:#fff;border:none;border-radius:6px;cursor:pointer;margin-bottom:20px}.keyboard{display:flex;flex-direction:column;gap:8px;user-select:none;direction:ltr}.keyboard-row{display:flex;gap:6px;justify-content:center}.key{background:var(--key-bg);border:1px solid var(--key-border);border-radius:6px;padding:12px 10px;min-width:40px;font-size:18px;text-align:center;cursor:pointer;transition:background 0.2s;user-select:none;box-sizing:border-box;line-height:1;white-space:nowrap}.key:hover{background:var(--key-hover)}.key.wide{min-width:80px}.key.space{min-width:280px}.key.active{background:#4caf50;color:#fff}.key.tab{min-width:60px}.key.capslock{min-width:90px}.key.enter{min-width:90px}.key.shift{min-width:110px}.key.ctrl,.key.alt{min-width:60px}.key.arrow{min-width:50px}.switch{position:relative;display:inline-block;width:60px;height:34px;vertical-align:middle}.switch input{opacity:0;width:0;height:0;position:absolute;pointer-events:none}.slider{position:relative;cursor:pointer;background-color:#ccc;border-radius:34px;transition:background-color 0.4s ease;height:100%;display:flex;align-items:center;padding:0 8px;box-shadow:0 2px 5px rgb(0 0 0 / .15)}.slider:before{content:"";position:absolute;height:26px;width:26px;left:4px;bottom:4px;background-color:#fff;border-radius:50%;box-shadow:0 2px 4px rgb(0 0 0 / .2);transition:transform 0.4s ease;z-index:2}input:checked+.slider:before{transform:translateX(26px)}input:checked+.slider{background-color:#4a90e2;box-shadow:0 2px 10px rgb(74 144 226 / .6)}.slider .icon{font-size:18px;pointer-events:none;user-select:none;width:20px;line-height:1;opacity:.7;transition:opacity 0.4s ease}.slider .sun{color:#f39c12;margin-left:4px}.slider .moon{color:#f1c40f;margin-left:auto;margin-right:4px}input:not(:checked)+.slider .sun{opacity:1}input:checked+.slider .sun{opacity:.3}input:checked+.slider .moon{opacity:1}input:not(:checked)+.slider .moon{opacity:.3}textarea,input{caret-color:#4a90e2}#copyBtn{background-color:#1a73e8;color:#fff;border:none;padding:.6rem 1.2rem;font-size:1rem;border-radius:6px;cursor:pointer;transition:background 0.3s}#copyBtn:hover{background-color:#1558b0}