.hexc-wrap{max-width:560px;margin:0 auto;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:#1a1a1a}
.hexc-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.hexc-icon{width:44px;height:44px;border-radius:10px;background:linear-gradient(135deg,#059669,#065F46);color:#fff;font-size:20px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.hexc-title{font-size:22px!important;font-weight:600!important;margin:0 0 3px!important;padding:0!important;border:none!important;color:#1a1a1a!important}
.hexc-sub{font-size:13px;color:#666;margin:0}
.hexc-tabs{display:flex;gap:8px;margin-bottom:18px}
.hexc-tab{flex:1;padding:9px;font-size:13px;font-weight:500;border:1px solid #d8d8d8;border-radius:9px;background:#fff;color:#555;cursor:pointer;transition:background .13s,color .13s,border-color .13s}
.hexc-tab:hover:not(.act){background:#ecfdf5}.hexc-tab.act{background:#d1fae5;color:#065F46;border-color:#34d399;font-weight:700}
.hexc-panel{display:none}.hexc-panel.act{display:block}
.hexc-section-lbl{font-size:11px;font-weight:700;color:#999;text-transform:uppercase;letter-spacing:.6px;margin-bottom:10px}
.hexc-conv-grid{display:flex;flex-direction:column;gap:8px;margin-bottom:4px}
.hexc-conv-row{display:flex;align-items:center;gap:10px}
.hexc-base-lbl{font-size:13px;font-weight:700;color:#059669;width:72px;flex-shrink:0;font-family:monospace}
.hexc-conv-input{flex:1;box-sizing:border-box;padding:10px 14px;border:1.5px solid #d0d0d0;border-radius:8px;font-size:15px;font-family:monospace;font-weight:600;color:#1a1a1a;background:#fff;outline:none;transition:border-color .15s;-moz-appearance:textfield}
.hexc-conv-input::-webkit-inner-spin-button,.hexc-conv-input::-webkit-outer-spin-button{-webkit-appearance:none}
.hexc-conv-input:focus{border-color:#059669;box-shadow:0 0 0 3px rgba(5,150,105,.1)}
.hexc-hex-in{background:#f0fdf4}.hexc-bin-in{font-size:13px}
.hexc-arith-row{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.hexc-arith-row .hexc-iw{flex:1;position:relative}
.hexc-arith-row .hexc-iw input{width:100%;box-sizing:border-box;padding:10px 12px 10px 28px;border:1.5px solid #d0d0d0;border-radius:8px;font-size:16px;font-family:monospace;font-weight:600;color:#1a1a1a;background:#fff;outline:none;transition:border-color .15s;text-transform:uppercase}
.hexc-arith-row .hexc-iw input:focus{border-color:#059669;box-shadow:0 0 0 3px rgba(5,150,105,.1)}
.hexc-pre{position:absolute;left:8px;top:50%;transform:translateY(-50%);font-size:12px;color:#999;pointer-events:none;font-family:monospace}
.hexc-op-sel{padding:10px 12px;border:1.5px solid #d0d0d0;border-radius:8px;font-size:18px;font-weight:700;color:#059669;background:#fff;cursor:pointer;outline:none}
.hexc-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}
.hexc-lbl{display:block;font-size:13px;font-weight:500;color:#555;margin-bottom:5px}
.hexc-group .hexc-iw{position:relative}
.hexc-group .hexc-iw input{width:100%;box-sizing:border-box;padding:9px 12px 9px 28px;border:1px solid #d0d0d0;border-radius:8px;font-size:14px;font-family:monospace;font-weight:600;color:#1a1a1a;background:#fff;outline:none;transition:border-color .15s;text-transform:uppercase}
.hexc-group .hexc-iw input:focus{border-color:#059669;box-shadow:0 0 0 3px rgba(5,150,105,.1)}
/* Results */
.hexc-result-card{background:linear-gradient(135deg,#059669,#065F46);border-radius:12px;padding:16px 18px;color:#fff;margin-top:8px;animation:hexc-in .22s ease}
@keyframes hexc-in{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}
.hexc-res-row{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px solid rgba(255,255,255,.15);font-size:14px}
.hexc-res-row:last-child{border-bottom:none;font-weight:700;font-size:16px}
.hexc-res-lbl{opacity:.8}.hexc-res-val{font-family:monospace;font-weight:600}