.faiz-hesaplama-araci {
    max-width: 600px;
    margin: 20px auto;
    padding: 20px;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0,0,0,0.1);
    font-family: 'Arial', sans-serif;
}

.faiz-hesaplama-araci h2 {
    color: #2c3e50;
    text-align: center;
    margin-bottom: 20px;
    font-size: 24px;
}

.faiz-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.input-group label {
    font-weight: bold;
    color: #34495e;
}

.input-group input,
.input-group select {
    padding: 10px;
    border: 1px solid #bdc3c7;
    border-radius: 5px;
    font-size: 16px;
    width: 100%;
    box-sizing: border-box;
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 5px rgba(52,152,219,0.3);
}

.hesapla-btn {
    background-color: #2980b9;
    color: white;
    padding: 12px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.hesapla-btn:hover {
    background-color: #3498db;
}

.sonuc {
    margin-top: 20px;
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: 5px;
    display: none;
}

.sonuc.active {
    display: block;
}

.sonuc-item {
    margin: 10px 0;
    padding: 10px;
    background: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.sonuc-item strong {
    color: #2c3e50;
}

.error {
    color: #e74c3c;
    font-size: 14px;
    margin-top: 5px;
    display: none;
}

@media (max-width: 768px) {
    .faiz-hesaplama-araci {
        margin: 10px;
        padding: 15px;
    }
}