/* ============================================
   CALCULATOR STYLES
   ============================================ */

.calculator-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 2rem;
    border-radius: 12px;
    border: 2px solid var(--border-color);
}

.calculator-section p {
    font-size: 1.05rem;
    color: var(--text-primary);
}

.calculator-container {
    background-color: var(--bg-white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    margin: 2rem 0;
}

/* Input Section */
.calculator-input {
    margin-bottom: 2rem;
}

.calculator-input label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.input-group {
    display: flex;
    gap: 0.5rem;
    align-items: stretch;
}

.input-field {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    font-family: var(--font-family);
    transition: var(--transition);
}

.input-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 82, 204, 0.1);
}

.input-field:invalid {
    border-color: var(--danger-color);
}

.input-field::placeholder {
    color: var(--text-secondary);
}

.unit {
    display: flex;
    align-items: center;
    padding: 0 1rem;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1.2rem;
}

/* Button */
.calculator-button {
    margin-bottom: 2rem;
}

#calculateBtn {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(0, 82, 204, 0.3);
}

#calculateBtn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 82, 204, 0.4);
}

#calculateBtn:active:not(:disabled) {
    transform: translateY(0);
}

/* Result Section */
.calculator-result {
    animation: fadeIn 0.4s ease;
}

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

.result-card {
    background: linear-gradient(135deg, #f0f4ff 0%, #f9f9ff 100%);
    border: 2px solid var(--primary-light);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.result-row {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.result-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    min-width: 120px;
    text-align: center;
}

.result-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-value {
    font-size: 1.75rem;
    font-weight: bold;
    color: var(--primary-color);
}

.result-plus,
.result-equals {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

/* Visual Representation */
.result-visual {
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    margin: 1.5rem 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 250px;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.05);
}

#resultVisualization {
    max-width: 100%;
    height: auto;
    max-height: 300px;
}

/* Result Actions */
.result-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.result-actions .btn {
    padding: 0.75rem 1rem;
}

/* Error Message */
.error-message {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    border-radius: 6px;
    padding: 1rem;
    color: #721c24;
    margin-top: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.error-message:before {
    content: "⚠";
    font-weight: bold;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    max-width: 600px;
    width: 90%;
    box-shadow: var(--shadow-lg);
    position: relative;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--primary-color);
}

.modal-content h3 {
    margin-top: 0;
}

/* Embed Code Box */
.embed-code-box {
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    margin: 1.5rem 0;
    overflow-x: auto;
}

.embed-code-box code {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: var(--text-primary);
    word-break: break-all;
}

.modal-content .btn {
    width: 100%;
    margin-top: 1rem;
}

/* Calculator Info */
.calculator-info {
    background-color: var(--bg-light);
    border-left: 4px solid var(--info-color);
    padding: 1.5rem;
    border-radius: 6px;
    margin-top: 2rem;
}

.calculator-info h3 {
    margin-top: 0;
}

.calculator-info ol {
    margin-left: 1.5rem;
}

.calculator-info li {
    margin-bottom: 0.75rem;
}

/* Responsive */
@media (max-width: 768px) {
    .calculator-container {
        padding: 1.5rem;
    }

    .calculator-section {
        padding: 1.5rem;
    }

    .result-row {
        gap: 0.5rem;
    }

    .result-item {
        min-width: 100px;
        padding: 1rem;
    }

    .result-value {
        font-size: 1.5rem;
    }

    .result-label {
        font-size: 0.8rem;
    }

    .result-visual {
        min-height: 200px;
        padding: 1rem;
    }

    .result-actions {
        grid-template-columns: 1fr;
    }

    .modal-content {
        width: 95%;
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .calculator-button {
        margin-bottom: 1rem;
    }

    .result-row {
        flex-direction: column;
        gap: 0.75rem;
    }

    .result-plus,
    .result-equals {
        display: none;
    }

    .result-card {
        padding: 1rem;
    }

    .modal-content {
        padding: 1rem;
    }

    .embed-code-box code {
        font-size: 0.8rem;
    }
}

/* Accessibility */
.calculator-input label {
    text-decoration: underline;
    text-decoration-color: transparent;
}

#calculateBtn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .modal,
    .calculator-button,
    .result-actions {
        display: none;
    }

    .result-card {
        border: 1px solid var(--border-color);
        background-color: white;
    }
}