:root{--background-color: #1a1a1a;--card-color: #2c2c2c;--gold-color: #ffd700;--text-color: #f0f0f0;--text-muted-color: #a0a0a0;--border-color: #444;--error-color: #e57373}*,*:before,*:after{box-sizing:border-box}body{font-family:Vazirmatn,sans-serif;background-color:var(--background-color);color:var(--text-color);margin:0;padding:20px;direction:rtl;display:flex;justify-content:center;align-items:flex-start;min-height:100vh}#root{width:100%}.page-content{width:100%;max-width:600px;margin:0 auto}.app-container{width:100%;background-color:var(--card-color);border-radius:12px;padding:24px;box-shadow:0 10px 25px #0000004d;border:1px solid var(--border-color)}h1{color:var(--gold-color);text-align:center;margin-top:0;margin-bottom:24px;font-size:2rem}.calculator-form{display:grid;grid-template-columns:1fr;gap:20px}@media (min-width: 500px){.calculator-form{grid-template-columns:1fr 1fr}.calculator-form .form-group:first-child{grid-column:1 / -1}}.form-group{display:flex;flex-direction:column}.form-group label{margin-bottom:8px;font-size:.9rem}.form-group input{padding:12px;border-radius:6px;border:1px solid var(--border-color);background-color:#333;color:var(--text-color);font-family:inherit;font-size:1rem;transition:border-color .2s,box-shadow .2s}.form-group input:focus{outline:none;border-color:var(--gold-color);box-shadow:0 0 0 3px #ffd7004d}.results{margin-top:24px;padding-top:24px;border-top:1px solid var(--border-color)}.initial-message{padding:15px;background-color:#383838;border:1px dashed var(--gold-color);border-radius:8px;text-align:center;color:var(--text-color);margin-bottom:20px}.initial-message p{margin:0;font-size:1.1rem}.result-item{display:flex;justify-content:space-between;align-items:center;padding:14px 0;border-bottom:1px dashed var(--border-color);animation:fadeIn .5s ease-in-out}.result-item:last-child{border-bottom:none}.result-item.total{font-size:1.3rem;font-weight:700;color:var(--gold-color);margin-top:16px;padding-top:16px;border-top:1px solid var(--gold-color)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.share-section{text-align:right;margin-top:16px}.share-button{background-color:transparent;border:1px solid var(--border-color);color:var(--text-muted-color);padding:6px 14px;border-radius:16px;font-family:inherit;font-size:.85rem;cursor:pointer;transition:background-color .2s,color .2s,border-color .2s}.share-button:hover,.share-button:focus{background-color:#ffd7001a;color:var(--gold-color);border-color:var(--gold-color);outline:none}.app-footer{margin-top:24px;padding-top:16px;border-top:1px solid var(--border-color);text-align:center;font-size:.85rem;color:var(--text-muted-color)}.app-footer p{margin:0 0 8px;line-height:1.6}.app-footer p:last-child{margin-bottom:0}.app-footer .footer-divider{border:none;border-top:1px dashed var(--border-color);margin:16px 0}