#hc-avogadro-sabiti-hesaplama {
    background: #ffffff;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    font-family: 'Segoe UI', sans-serif;
    max-width: 500px;
    margin: 20px auto;
    border: 1px solid #e2e8f0;
}

#hc-avogadro-sabiti-hesaplama .hc-header h3 {
    margin: 0 0 10px;
    color: #1e293b;
    font-size: 1.4rem;
}

#hc-avogadro-sabiti-hesaplama .hc-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
    background: #f1f5f9;
    padding: 5px;
    border-radius: 10px;
}

#hc-avogadro-sabiti-hesaplama .hc-tab-btn {
    flex: 1;
    padding: 10px;
    border: none;
    border-radius: 6px;
    background: transparent;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    color: #64748b;
    transition: all 0.2s;
}

#hc-avogadro-sabiti-hesaplama .hc-tab-btn.active {
    background: white;
    color: #2563eb;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

#hc-avogadro-sabiti-hesaplama .hc-particle-input {
    display: flex;
    align-items: center;
    gap: 8px;
}

#hc-avogadro-sabiti-hesaplama .hc-particle-input span {
    font-weight: 700;
    color: #475569;
}

#hc-avogadro-sabiti-hesaplama input {
    width: 100%;
    padding: 12px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    background: #f8fafc;
}

#hc-avogadro-sabiti-hesaplama .hc-btn {
    width: 100%;
    margin-top: 15px;
    background: #2563eb;
    color: white;
    padding: 14px;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
}

#hc-avogadro-sabiti-hesaplama .hc-result {
    margin-top: 30px;
    padding: 20px;
    background: #f0f9ff;
    border-radius: 12px;
    border: 1px solid #bae6fd;
    text-align: center;
    display: none;
}

#hc-avogadro-sabiti-hesaplama .hc-result.visible {
    display: block;
}

#hc-avogadro-sabiti-hesaplama #hc-res-av-val {
    font-size: 1.5rem;
    font-weight: 800;
    color: #0c4a6e;
    font-family: monospace;
}

#hc-avogadro-sabiti-hesaplama .hc-formula-box {
    margin-top: 15px;
    font-size: 0.8rem;
    color: #0284c7;
}