.odeliver-calculator-wrap {
    max-width: 700px;
    margin: 30px auto;
    padding: 35px;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 
        0 4px 6px -1px rgba(0, 0, 0, 0.1),
        0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.odeliver-calculator-wrap .calc-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    margin-bottom: 30px;
}

.odeliver-calculator-wrap .form-group {
    position: relative;
}

.odeliver-calculator-wrap label {
    display: inline-block;
    margin-bottom: 10px;
    color: #374151;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.odeliver-calculator-wrap select,
.odeliver-calculator-wrap input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #E5E7EB;
    border-radius: 8px;
    font-size: 15px;
    color: #1F2937;
    background-color: #F9FAFB;
    transition: all 0.2s ease;
    height: 48px;
}

.odeliver-calculator-wrap select:hover,
.odeliver-calculator-wrap input:hover {
    border-color: #D1D5DB;
}

.odeliver-calculator-wrap select:focus,
.odeliver-calculator-wrap input:focus {
    outline: none;
    border-color: #3B82F6;
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.odeliver-calculator-wrap select {
    padding-right: 40px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236B7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    cursor: pointer;
}

.odeliver-calculator-wrap input[type="number"] {
    -moz-appearance: textfield;
}

.odeliver-calculator-wrap input[type="number"]::-webkit-outer-spin-button,
.odeliver-calculator-wrap input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.odeliver-calculator-wrap #calculate-btn {
    display: block;
    width: auto;
    min-width: 200px;
    margin: 30px auto 0;
    padding: 14px 28px;
    background: linear-gradient(to right, #2563EB, #3B82F6);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.odeliver-calculator-wrap #calculate-btn:hover {
    background: linear-gradient(to right, #1D4ED8, #2563EB);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.odeliver-calculator-wrap #calculate-btn:active {
    transform: translateY(0);
}

.odeliver-calculator-wrap #calculate-btn:disabled {
    background: #9CA3AF;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.odeliver-calculator-wrap #result {
    margin-top: 25px;
    padding: 20px;
    border-radius: 10px;
    font-size: 16px;
    text-align: center;
    font-weight: 500;
    display: none;
    animation: fadeIn 0.3s ease;
}

.odeliver-calculator-wrap #result.show {
    display: block;
}

.odeliver-calculator-wrap #result.success {
    background-color: #ECFDF5;
    border: 2px solid #A7F3D0;
    color: #065F46;
}

.odeliver-calculator-wrap #result.error {
    background-color: #FEF2F2;
    border: 2px solid #FECACA;
    color: #991B1B;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Loading State */
.odeliver-calculator-wrap #calculate-btn.loading {
    position: relative;
    color: transparent;
}

.odeliver-calculator-wrap #calculate-btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .odeliver-calculator-wrap {
        margin: 20px;
        padding: 25px;
    }
    
    .odeliver-calculator-wrap .calc-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .odeliver-calculator-wrap #calculate-btn {
        width: 100%;
        min-width: unset;
    }
}

/* Optional: Add a title to the calculator */
.odeliver-calculator-wrap::before {
    content: 'Shipping Cost Calculator';
    display: block;
    margin-bottom: 30px;
    color: #1F2937;
    font-size: 24px;
    font-weight: 700;
    text-align: center;
}