.weight-converter-container{max-width:90vw;width:900px;margin:2rem auto;padding:2.5rem;background:var(--bg-primary);border-radius:var(--radius);box-shadow:var(--shadow-lg);text-align:center;position:relative;overflow:hidden;border:1px solid var(--border-color)}.converter-header{margin-bottom:2rem}.converter-title{display:flex;align-items:center;justify-content:center;gap:1vw;font-size:2rem;font-weight:700;margin-bottom:15px}.letter{opacity:0;transform:translateY(10px);display:inline-block;animation:fadeInUp .4s forwards;color:var(--primary);font-size:2rem;font-weight:700;letter-spacing:.05em;text-shadow:0 2px 4px rgba(0,0,0,.1)}.letter:nth-child(1){animation-delay:0s}.letter:nth-child(2){animation-delay:.05s}.letter:nth-child(3){animation-delay:.1s}.letter:nth-child(4){animation-delay:.15s}.letter:nth-child(5){animation-delay:.2s}.letter:nth-child(6){animation-delay:.25s}.letter:nth-child(7){animation-delay:.3s}.letter:nth-child(8){animation-delay:.35s}.letter:nth-child(9){animation-delay:.4s}.letter:nth-child(10){animation-delay:.45s}.letter:nth-child(11){animation-delay:.5s}.letter:nth-child(12){animation-delay:.55s}.letter:nth-child(13){animation-delay:.6s}.letter:nth-child(14){animation-delay:.65s}.letter:nth-child(15){animation-delay:.7s}.letter:nth-child(16){animation-delay:.75s}@keyframes fadeInUp{to{opacity:1;transform:translateY(0)}}.title-icon{color:var(--primary)}.converter-description{color:var(--text-secondary);font-size:1.1rem}.converter-content{max-width:800px;margin:0 auto}.conversion-inputs{display:flex;align-items:center;gap:1rem;margin-bottom:2rem}.input-group{flex:1;display:flex;gap:.5rem}.conversion-input{flex:1;width:100%;padding:.75rem 1rem;border:1px solid var(--border-color);border-radius:var(--radius);font-size:1rem;color:var(--text-primary);background:var(--bg-secondary);transition:all .2s ease}.conversion-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #6366f11a}.unit-select{padding:.75rem 1rem;border:1px solid var(--border-color);border-radius:var(--radius);font-size:1rem;color:var(--text-primary);background:var(--bg-secondary);cursor:pointer;transition:all .2s ease;min-width:120px}.unit-select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #6366f11a}.swap-button{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border:none;border-radius:50%;background:var(--primary);color:#fff;cursor:pointer;transition:all .2s ease;flex-shrink:0}.swap-button:hover{background:var(--primary-hover);transform:scale(1.1)}.result-container{display:flex;align-items:center;justify-content:center;gap:1rem;padding:1rem;background:var(--bg-secondary);border-radius:var(--radius);border:1px solid var(--border-color)}.result-text{font-size:1.1rem;color:var(--text-primary);font-weight:500}.copy-button{display:flex;align-items:center;gap:.5rem;padding:.5rem 1rem;border:none;border-radius:var(--radius);background:var(--primary);color:#fff;font-size:.9rem;cursor:pointer;transition:all .2s ease}.copy-button:hover{background:var(--primary-hover);transform:translateY(-2px)}.copy-button.copied{background:var(--color-success)}@media(max-width:768px){.weight-converter-container{margin:1rem auto;padding:1.5rem}.letter{font-size:1.5rem}.input-group,.conversion-inputs{flex-direction:column}.input-group{width:100%}.swap-button{transform:rotate(90deg)}.swap-button:hover{transform:rotate(90deg) scale(1.1)}.result-container{flex-direction:column;gap:.75rem}}@media(max-width:480px){.weight-converter-container{padding:1rem}.converter-title{font-size:1.5rem}.converter-description{font-size:1rem}.conversion-input,.unit-select{padding:.6rem .75rem;font-size:.95rem}.result-text{font-size:1rem}}