/* Modern calculator card design */
.vrc-calculator-card {
    max-width: 500px;
    margin: 20px auto;
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    padding: 30px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.vrc-calculator-card h3 {
    margin-top: 0;
    margin-bottom: 25px;
    font-size: 24px;
    font-weight: 600;
    color: #333;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 15px;
}

.vrc-calculator-card h3 i {
    color: #4a6cf7;
}

.vrc-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.vrc-field {
    display: flex;
    flex-direction: column;
}

.vrc-field label {
    font-weight: 500;
    margin-bottom: 6px;
    color: #555;
    display: flex;
    align-items: center;
    gap: 8px;
}

.vrc-field label i {
    width: 20px;
    color: #4a6cf7;
}

.vrc-field label span {
    font-size: 0.85em;
    color: #888;
    font-weight: normal;
}

.vrc-field input,
.vrc-field select {
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 10px;
    font-size: 16px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.vrc-field input:focus,
.vrc-field select:focus {
    border-color: #4a6cf7;
    outline: none;
    box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.1);
}

.vrc-field input[type="number"] {
    -moz-appearance: textfield;
}

.vrc-field input[type="number"]::-webkit-inner-spin-button,
.vrc-field input[type="number"]::-webkit-outer-spin-button {
    opacity: 0.5;
}

/* Button group */
.vrc-button-group {
    display: flex;
    gap: 15px;
    margin-top: 10px;
    flex-wrap: wrap;
}

.vrc-btn {
    flex: 1;
    padding: 14px 20px;
    border: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.1s, box-shadow 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-width: 140px;
}

.vrc-btn-primary {
    background: #4a6cf7;
    color: white;
    box-shadow: 0 4px 10px rgba(74, 108, 247, 0.3);
}

.vrc-btn-primary:hover {
    background: #3a5be5;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(74, 108, 247, 0.4);
}

.vrc-btn-secondary {
    background: #f0f0f0;
    color: #555;
}

.vrc-btn-secondary:hover {
    background: #e4e4e4;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* Results section */
.vrc-results {
    margin-top: 30px;
    padding: 20px;
    background: #f9fafc;
    border-radius: 15px;
    border-left: 5px solid #4a6cf7;
}

.vrc-results h4 {
    margin: 0 0 15px 0;
    font-size: 18px;
    color: #333;
    display: flex;
    align-items: center;
    gap: 8px;
}

.vrc-results h4 i {
    color: #4a6cf7;
}

.vrc-result-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px dashed #ddd;
    font-size: 16px;
    color: #555;
}

.vrc-result-item:last-of-type {
    border-bottom: none;
}

.vrc-result-item span:first-child {
    font-weight: 500;
}

.vrc-result-item span:last-child {
    font-weight: 600;
    color: #333;
}

.vrc-total {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 2px solid #4a6cf7;
    font-size: 18px;
}

.vrc-total span:last-child {
    color: #4a6cf7;
    font-size: 20px;
}

/* Error message */
.vrc-error {
    margin-top: 20px;
    padding: 12px 18px;
    background: #ffebee;
    color: #d32f2f;
    border-radius: 10px;
    border-left: 5px solid #d32f2f;
    font-weight: 500;
}

/* Mobile responsiveness */
@media (max-width: 600px) {
    .vrc-calculator-card {
        padding: 20px;
        margin: 15px;
    }

    .vrc-button-group {
        flex-direction: column;
    }

    .vrc-btn {
        width: 100%;
    }

    .vrc-result-item {
        font-size: 15px;
    }

    .vrc-total span:last-child {
        font-size: 18px;
    }
}