.itc-container {
    --saffron: #FF9933;
    --white: #fff;
    --green: #138808;
    --navy-blue: #1B1F91;
    --light-gray: #f5f5f5;
    --medium-gray: #e0e0e0;
    --dark-gray: #616161;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    box-sizing: border-box;
    max-width: 800px;
    margin: 20px auto;
    padding: 0 15px;
    line-height: 1.6;
}

.itc-container *, 
.itc-container *::before, 
.itc-container *::after {
    box-sizing: inherit;
}

.itc-container .card {
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 30px;
    margin-bottom: 25px;
    border-top: 4px solid var(--saffron);
    transition: box-shadow 0.3s ease;
}

.itc-container .card:hover {
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.itc-container .card-title {
    color: var(--navy-blue);
    margin-bottom: 25px;
    font-size: 1.8rem !important;
    font-weight: 700;
    border-bottom: 2px solid var(--medium-gray);
    padding-bottom: 15px;
    line-height: 1.3;
    text-align: center;
}

.itc-container .form-group {
    margin-bottom: 25px;
}

.itc-container .form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--navy-blue);
    font-size: 1rem;
}

.itc-container .form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--medium-gray);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    background-color: var(--white);
}

.itc-container .form-control:focus {
    outline: none;
    border-color: var(--navy-blue);
    box-shadow: 0 0 0 3px rgba(27, 31, 145, 0.1);
}

.itc-container .regime-toggle {
    display: flex;
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 25px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.itc-container .regime-label {
    flex: 1;
    text-align: center;
    padding: 15px 20px;
    cursor: pointer;
    background-color: var(--light-gray);
    color: var(--navy-blue);
    border: 2px solid var(--medium-gray);
    font-weight: 600;
    transition: all 0.3s ease;
    user-select: none;
}

.itc-container .regime-label:hover {
    background-color: var(--medium-gray);
}

.itc-container .regime-label.active {
    background-color: var(--navy-blue);
    color: var(--white);
    font-weight: 700;
    border-color: var(--navy-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(27, 31, 145, 0.3);
}

.itc-container input[type="radio"] {
    display: none;
}

.itc-container .deductions-section {
    background: linear-gradient(135deg, var(--light-gray) 0%, #f8f9fa 100%);
    padding: 25px;
    border-radius: 8px;
    margin-top: 20px;
    border-left: 4px solid var(--saffron);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.itc-container .deductions-section h3 {
    margin-bottom: 20px;
    font-size: 1.2rem;
    color: var(--navy-blue);
    font-weight: 600;
}

.itc-container .form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
}

@media (max-width: 768px) {
    .itc-container .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .itc-container .card {
        padding: 20px;
    }
    
    .itc-container .card-title {
        font-size: 1.5rem !important;
    }
}

.itc-container .form-col {
    flex: 1;
    margin-bottom: 15px;
}

.itc-container .btn {
    display: block;
    width: 100%;
    background: linear-gradient(135deg, var(--navy-blue) 0%, #0f1570 100%);
    color: var(--white) !important;
    text-decoration: none;
    border: none;
    padding: 15px 30px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 700;
    text-align: center;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.itc-container .btn:hover {
    background: linear-gradient(135deg, #0f1570 0%, var(--navy-blue) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(27, 31, 145, 0.4);
}

.itc-container .btn:active {
    transform: translateY(0);
}

.itc-container .results-card {
    display: none;
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 30px;
    margin-bottom: 25px;
    border-top: 4px solid var(--green);
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.itc-container .result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    border-bottom: 1px dashed var(--medium-gray);
}

.itc-container .result-item:last-child {
    border-bottom: none;
}

.itc-container .result-label {
    font-weight: 600;
    color: var(--navy-blue);
    font-size: 1rem;
}

.itc-container .result-value {
    font-weight: 700;
    color: var(--dark-gray);
    font-size: 1.1rem;
}

.itc-container .suggestion {
    margin-top: 25px;
    padding: 20px;
    background: linear-gradient(135deg, #e8f5e9 0%, #f1f8e9 100%);
    border-left: 4px solid var(--green);
    border-radius: 6px;
    box-shadow: 0 2px 4px rgba(19, 136, 8, 0.1);
}

.itc-container .suggestion p {
    margin: 0;
    color: var(--dark-gray);
    font-weight: 500;
}

.itc-container .total-tax {
    font-size: 1.4rem !important;
    color: var(--navy-blue) !important;
    font-weight: 800 !important;
}

.itc-container .error-message {
    background-color: #fee;
    color: #c33;
    padding: 15px;
    border-radius: 6px;
    border-left: 4px solid #c33;
    margin-top: 15px;
    display: none;
}