#hc-lastik-ebat-hesaplayicisi {
    background: #ffffff;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    font-family: 'Inter', sans-serif;
    max-width: 600px;
    margin: 20px auto;
    border: 1px solid #f0f0f0;
}

#hc-lastik-ebat-hesaplayicisi .hc-header h3 {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 8px;
}

#hc-lastik-ebat-hesaplayicisi .hc-header p {
    text-align: center;
    font-size: 0.9rem;
    color: #64748b;
    margin-bottom: 25px;
}

#hc-lastik-ebat-hesaplayicisi .hc-tire-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 25px;
}

#hc-lastik-ebat-hesaplayicisi .hc-tire-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: #475569;
    text-transform: uppercase;
    margin-bottom: 10px;
    text-align: center;
}

#hc-lastik-ebat-hesaplayicisi .hc-tire-inputs {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

#hc-lastik-ebat-hesaplayicisi input {
    width: 100%;
    padding: 12px;
    border: 2px solid #f1f5f9;
    border-radius: 10px;
    font-size: 0.95rem;
    background: #f8fafc;
    text-align: center;
}

#hc-lastik-ebat-hesaplayicisi input:focus {
    border-color: #6366f1;
    background: white;
    outline: none;
}

#hc-lastik-ebat-hesaplayicisi .hc-btn {
    width: 100%;
    background: #1e293b;
    color: white;
    border: none;
    padding: 15px;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

#hc-lastik-ebat-hesaplayicisi .hc-result {
    margin-top: 30px;
    padding: 25px;
    background: #f8fafc;
    border-radius: 18px;
    border: 1px solid #e2e8f0;
    display: none;
}

#hc-lastik-ebat-hesaplayicisi .hc-result.visible {
    display: block;
    animation: fadeIn 0.5s ease;
}

#hc-lastik-ebat-hesaplayicisi .hc-diff-val {
    text-align: center;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e2e8f0;
}

#hc-lastik-ebat-hesaplayicisi .hc-diff-val small {
    display: block;
    color: #64748b;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

#hc-lastik-ebat-hesaplayicisi #hc-res-diff-perc {
    font-size: 2.5rem;
    font-weight: 900;
    color: #1e293b;
}

#hc-lastik-ebat-hesaplayicisi #hc-res-status {
    font-weight: 700;
    font-size: 0.9rem;
    margin-top: 5px;
}

#hc-lastik-ebat-hesaplayicisi .hc-res-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

#hc-lastik-ebat-hesaplayicisi .hc-res-card {
    background: white;
    padding: 15px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

#hc-lastik-ebat-hesaplayicisi .hc-res-card span {
    display: block;
    font-size: 0.7rem;
    color: #94a3b8;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 5px;
}

#hc-lastik-ebat-hesaplayicisi .hc-res-card strong {
    font-size: 0.95rem;
    color: #1e293b;
}

#hc-lastik-ebat-hesaplayicisi .hc-res-card p {
    font-size: 0.8rem;
    margin: 0;
    color: #64748b;
}

@media (max-width: 480px) {
    #hc-lastik-ebat-hesaplayicisi .hc-tire-grid {
        grid-template-columns: 1fr;
    }
    #hc-lastik-ebat-hesaplayicisi .hc-res-grid {
        grid-template-columns: 1fr;
    }
}