:root{--bg-main:#F4F7F6;--bg-container:#FFFFFF;--bg-card:#F8F9FA;--text-primary:#212529;--text-secondary:#6C757D;--accent:#e67e22;--accent-hover:#d35400;--border-color:#DEE2E6;--shadow-color:rgba(0,0,0,0.05);--card-active-bg:#FFFFFF}body.dark-theme{--bg-main:#0a0a0a;--bg-container:rgba(255, 255, 255, 0.04);--bg-card:rgba(255, 255, 255, 0.02);--text-primary:#ffffff;--text-secondary:rgba(255, 255, 255, 0.7);--border-color:rgba(255, 255, 255, 0.1);--shadow-color:rgba(0, 0, 0, 0.4);--card-active-bg:rgba(255, 255, 255, 0.08)}body.dark-theme .container,body.dark-theme fieldset{position:relative;background:rgba(255,255,255,.03);border:none;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:inset 1px 1px 2px rgba(255,255,255,.15),inset -1px -1px 3px rgba(0,0,0,.5),0 8px 24px rgba(0,0,0,.4);z-index:1}body.dark-theme .container::before,body.dark-theme fieldset::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1.5px;background:linear-gradient(135deg,rgba(255,255,255,.4) 0,rgba(255,255,255,.02) 30%,rgba(255,255,255,0) 70%,rgba(255,255,255,.1) 100%);-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);mask-composite:exclude;pointer-events:none;z-index:-1}body.dark-theme input,body.dark-theme select,body.dark-theme textarea{background-color:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);color:#fff}body.dark-theme option{background-color:#1e1e1e;color:#fff}body{font-family:Inter,sans-serif;background-color:var(--bg-main);color:var(--text-primary);line-height:1.6;display:flex;justify-content:center;padding:20px;margin:0;transition:background-color .3s ease}.container{background:var(--bg-container);padding:30px 40px;border-radius:12px;box-shadow:0 8px 32px var(--shadow-color);max-width:1200px;width:100%;transition:background-color .3s ease}.tool-header{display:flex;justify-content:space-between;align-items:center;text-align:center;margin-bottom:30px;border-bottom:1px solid var(--border-color);padding-bottom:20px;flex-wrap:wrap;gap:15px}.logo{max-width:100px;height:auto}.title-container{flex-grow:1}h1{color:var(--text-primary);font-size:2em;font-weight:700;letter-spacing:-1px;margin:0;padding:0;border-bottom:none}.tool-header p{font-size:1.1em;color:var(--text-secondary);margin:5px auto 0 auto;max-width:500px}.theme-switch-wrapper{display:flex;align-items:center;gap:10px}.theme-label{font-size:.8em;color:var(--text-secondary)}.theme-switch{position:relative;display:inline-block;width:50px;height:26px}.theme-switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:#ccc;transition:.4s}.slider:before{position:absolute;content:"";height:20px;width:20px;left:3px;bottom:3px;background-color:#fff;transition:.4s}input:checked+.slider{background-color:var(--accent)}input:checked+.slider:before{transform:translateX(24px)}.slider.round{border-radius:34px}.slider.round:before{border-radius:50%}.tool-container{display:flex;flex-direction:column;gap:30px}@media (min-width:992px){.tool-container{flex-direction:row}.options-column{flex:3;min-width:0}.results-column{flex:2;position:sticky;top:20px;align-self:flex-start;min-width:0}}fieldset{border:1px solid var(--border-color);border-radius:8px;padding:20px;margin-bottom:20px;background-color:var(--bg-card);transition:transform .3s ease,box-shadow .3s ease,background-color .3s ease,border-color .3s ease;position:relative}fieldset:hover{transform:translateY(-4px);box-shadow:0 12px 24px var(--shadow-color)}fieldset.fieldset-active{border-color:var(--accent);background-color:var(--card-active-bg)}legend{font-weight:600;color:var(--accent);padding:0 10px;font-size:1.1em;background-color:var(--bg-card);position:relative;top:10px;margin-left:-10px;z-index:1;transition:background-color .3s ease}.fieldset-active legend{background-color:var(--card-active-bg)}.form-group{margin-bottom:18px}label{display:block;margin-bottom:6px;font-weight:600;font-size:.9em;color:var(--text-secondary)}input[type=text],select,textarea{width:100%;padding:12px;border-radius:6px;border:1px solid var(--border-color);background-color:var(--bg-container);color:var(--text-primary);box-sizing:border-box;transition:border-color .2s,box-shadow .2s,background-color .3s ease,color .3s ease}input[type=text]:focus,select:focus,textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 2px var(--accent)}#resultado h2{font-size:1.2em;margin-top:0;border-bottom:1px solid var(--border-color);padding-bottom:10px;margin-bottom:15px}#resultado textarea{background-color:var(--bg-main);color:var(--text-secondary);resize:none;margin-bottom:5px}button.copiarBtn{display:block;width:100%;padding:15px;background-color:var(--accent);color:#fff;border:none;border-radius:6px;font-size:16px;font-weight:700;cursor:pointer;margin-top:5px;margin-bottom:15px;transition:background-color .3s ease}button.copiarBtn:hover{background-color:var(--accent-hover)}button.copiarBtn.copiado{background-color:#27ae60}.hidden{display:none}#mensajeCopiado{text-align:center;color:#27ae60;font-weight:700;margin-top:-10px}#inputsColor input{margin-top:8px}.checkbox-group{display:flex;align-items:center;background-color:var(--bg-container);padding:10px;border-radius:6px}.checkbox-group input{width:auto;margin-right:10px;flex-shrink:0}.checkbox-group label{margin-bottom:0;font-weight:400;color:var(--text-primary)}.platform-selector{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;align-items:center}.platform-selector input[type=radio]{display:none}.platform-selector label{padding:10px 15px;border:1px solid var(--border-color);border-radius:20px;cursor:pointer;transition:all .2s ease-in-out;text-align:center;color:var(--text-secondary)}.platform-selector input[type=radio]:checked+label{background-color:var(--accent);color:#fff;border-color:var(--accent-hover)}.nota{font-size:.8em;color:var(--text-secondary);text-align:center;margin-top:-10px}