/**
 * Protein Molecular Weight Calculator-clac360
 * Stylesheet - Version 1.0.4
 */

:root {
    --bg-color: #F5F5F5;
    --panel-color: #E0E0E0;
    --text-color: #222222;
    --primary-accent: #4A90E2;
    --secondary-accent: #FF9500;
    --input-bg: #f9f9f9;
    --input-border: #333333;
    --border-radius: 4px;
    --spacing-unit: 16px;
    --spacing-large: 30px;
    --formula-dropdown-min-height: 80px;
}

.protein-mw-calculator * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.protein-mw-calculator {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: var(--spacing-unit);
    max-width: 1400px;
    margin: 0 auto;
}

.protein-mw-calculator .calculator-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-unit);
    margin-bottom: 60px;
}

@media (max-width: 768px) {
    .protein-mw-calculator .calculator-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-large);
    }
}

.protein-mw-calculator .panel {
    background-color: var(--panel-color);
    border-radius: var(--border-radius);
    padding: calc(var(--spacing-unit) * 1.5);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    overflow: visible;
}

@media (max-width: 768px) {
    .protein-mw-calculator .panel {
        padding: var(--spacing-unit);
        margin-bottom: var(--spacing-unit);
    }
}

.protein-mw-calculator .panel-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    padding-bottom: 8px;
    border-bottom: 2px solid var(--text-color);
}

.protein-mw-calculator .panel-title h2 {
    font-size: 1.4rem;
    font-weight: 600;
}

.protein-mw-calculator .colorblind-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.protein-mw-calculator .toggle-switch {
    position: relative;
    width: 50px;
    height: 24px;
}

.protein-mw-calculator .toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.protein-mw-calculator .toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    border-radius: 24px;
    transition: .4s;
}

.protein-mw-calculator .toggle-slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    border-radius: 50%;
    transition: .4s;
}

.protein-mw-calculator input:checked + .toggle-slider {
    background-color: var(--primary-accent);
}

.protein-mw-calculator input:checked + .toggle-slider:before {
    transform: translateX(26px);
}

/* Formula Dropdown Styling - Fixed for full text visibility */
.protein-mw-calculator .method-selector {
    margin-bottom: var(--spacing-large);
    position: relative;
    z-index: 10;
}

.protein-mw-calculator .method-selector select {
    width: 100%;
    padding: 22px 26px;
    border: 3px solid var(--input-border);
    border-radius: var(--border-radius);
    background-color: var(--input-bg);
    font-size: 1.15rem;
    color: var(--text-color);
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 22px center;
    background-size: 22px;
    min-height: 85px;
    line-height: 1.7;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    word-wrap: break-word;
    white-space: normal;
    overflow-wrap: break-word;
    height: auto;
    display: flex;
    align-items: center;
}

.protein-mw-calculator .method-selector select:focus {
    outline: 3px solid var(--primary-accent);
    outline-offset: 2px;
    border-color: var(--primary-accent);
}

/* Ensure dropdown options are fully visible */
.protein-mw-calculator .method-selector select option {
    padding: 20px 24px;
    font-size: 1.15rem;
    line-height: 1.7;
    background-color: var(--input-bg);
    color: var(--text-color);
    white-space: normal;
    word-wrap: break-word;
    min-height: 65px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.protein-mw-calculator .method-selector select option:checked,
.protein-mw-calculator .method-selector select option:focus,
.protein-mw-calculator .method-selector select option:hover {
    background-color: var(--primary-accent);
    color: white;
}

.protein-mw-calculator .input-group {
    margin-bottom: var(--spacing-large);
    width: 100%;
    position: relative;
}

.protein-mw-calculator .input-group-title {
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-color);
    font-size: 1.2rem;
    display: block;
    width: 100%;
    padding-left: 4px;
}

/* Input rows with proper spacing */
.protein-mw-calculator .input-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 24px;
    width: 100%;
}

@media (max-width: 768px) {
    .protein-mw-calculator .input-row {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-bottom: 20px;
    }
}

.protein-mw-calculator .input-field {
    display: flex;
    flex-direction: column;
    width: 100%;
    position: relative;
}

.protein-mw-calculator .input-field label {
    margin-bottom: 12px;
    font-weight: 500;
    color: var(--text-color);
    display: block;
    font-size: 1.1rem;
}

/* All input fields with proper sizing and constraints - SIGNIFICANTLY INCREASED HEIGHT */
.protein-mw-calculator .input-field input,
.protein-mw-calculator .input-field textarea,
.protein-mw-calculator .input-field select {
    padding: 24px 28px;
    border: 3px solid var(--input-border);
    border-radius: var(--border-radius);
    background-color: var(--input-bg);
    font-size: 1.2rem;
    color: var(--text-color);
    min-height: 85px;
    line-height: 1.7;
    width: 100%;
    display: block;
    resize: vertical;
    max-width: 100%;
    box-sizing: border-box;
    transition: all 0.2s ease;
}

/* Prevent textarea from overflowing - SIGNIFICANTLY INCREASED HEIGHT */
.protein-mw-calculator .input-field textarea {
    min-height: 220px;
    resize: vertical;
    font-family: 'Courier New', Courier, monospace;
    line-height: 1.8;
    padding-top: 22px;
    padding-bottom: 22px;
    overflow-y: auto;
    max-height: 400px;
    font-size: 1.2rem;
}

.protein-mw-calculator .input-field input:focus,
.protein-mw-calculator .input-field textarea:focus,
.protein-mw-calculator .input-field select:focus {
    outline: 4px solid var(--primary-accent);
    outline-offset: 2px;
    border-color: var(--primary-accent);
    box-shadow: 0 0 0 5px rgba(74, 144, 226, 0.2);
}

.protein-mw-calculator .primary-input {
    border-left: 8px solid var(--primary-accent) !important;
    padding-left: 32px !important;
}

.protein-mw-calculator .secondary-input {
    border-left: 8px solid var(--secondary-accent) !important;
    padding-left: 32px !important;
}

/* Button group with proper spacing */
.protein-mw-calculator .button-group {
    display: flex;
    gap: 20px;
    margin-top: var(--spacing-large);
    margin-bottom: var(--spacing-large);
    flex-wrap: wrap;
    justify-content: flex-start;
    width: 100%;
}

.protein-mw-calculator .button-group button {
    padding: 22px 38px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 180px;
    height: 75px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    flex: 1;
    min-width: 0;
    max-width: 240px;
}

.protein-mw-calculator .calculate-btn {
    background-color: var(--primary-accent);
    color: white;
}

.protein-mw-calculator .reset-btn {
    background-color: var(--secondary-accent);
    color: white;
}

.protein-mw-calculator .export-btn {
    background-color: var(--text-color);
    color: white;
}

.protein-mw-calculator .calculate-btn:hover,
.protein-mw-calculator .reset-btn:hover,
.protein-mw-calculator .export-btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* CSV Section with proper button styling */
.protein-mw-calculator .csv-section {
    margin-top: calc(var(--spacing-unit) * 2);
    padding-top: calc(var(--spacing-unit) * 1.5);
    border-top: 2px solid var(--input-border);
    width: 100%;
}

.protein-mw-calculator .csv-upload {
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    width: 100%;
}

/* Fixed Process CSV button styling */
.protein-mw-calculator .csv-upload .calculate-btn {
    margin-top: 26px;
    width: 100%;
    max-width: 100%;
    padding: 22px 30px;
    background-color: var(--primary-accent);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    height: 75px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 75px;
}

.protein-mw-calculator .csv-upload .calculate-btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

.protein-mw-calculator .csv-preview {
    max-height: 250px;
    overflow-y: auto;
    margin-top: 20px;
    border: 2px solid var(--input-border);
    border-radius: var(--border-radius);
    background-color: white;
    width: 100%;
}

.protein-mw-calculator .csv-preview table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

.protein-mw-calculator .csv-preview th,
.protein-mw-calculator .csv-preview td {
    padding: 12px 14px;
    border: 1px solid var(--input-border);
    text-align: left;
    font-size: 0.9rem;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.protein-mw-calculator .results-section {
    margin-top: calc(var(--spacing-unit) * 2);
}

.protein-mw-calculator .result-card {
    background-color: var(--input-bg);
    border-radius: var(--border-radius);
    padding: calc(var(--spacing-unit) * 1.5);
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    border-left: 8px solid var(--primary-accent);
}

.protein-mw-calculator .result-title {
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-color);
    font-size: 1.3rem;
}

.protein-mw-calculator .result-value {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary-accent);
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    word-break: break-all;
    line-height: 1.2;
}

.protein-mw-calculator .calculation-steps {
    background-color: white;
    border-radius: var(--border-radius);
    padding: var(--spacing-unit);
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.95rem;
    line-height: 1.8;
    max-height: 300px;
    overflow-y: auto;
    border: 2px solid var(--input-border);
}

.protein-mw-calculator .analysis-box,
.protein-mw-calculator .recommendation-box {
    padding: var(--spacing-unit);
    border-radius: var(--border-radius);
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.protein-mw-calculator .analysis-box {
    background-color: #e8f4fd;
    border-left: 8px solid #2196F3;
}

.protein-mw-calculator .recommendation-box {
    background-color: #fff3e0;
    border-left: 8px solid #FF9800;
}

.protein-mw-calculator .analysis-title,
.protein-mw-calculator .recommendation-title {
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-color);
}

.protein-mw-calculator .chart-container {
    margin-top: calc(var(--spacing-unit) * 2);
    background-color: white;
    border-radius: var(--border-radius);
    padding: var(--spacing-unit);
    height: 400px;
    position: relative;
    width: 100%;
}

.protein-mw-calculator .trademark {
    position: fixed;
    bottom: var(--spacing-unit);
    right: var(--spacing-unit);
    font-size: 0.8rem;
    color: var(--text-color);
    opacity: 0.7;
    z-index: 1000;
    background-color: var(--bg-color);
    padding: 6px 10px;
    border-radius: 3px;
    border: 1px solid rgba(0,0,0,0.1);
}

/* Colorblind mode adaptations */
.protein-mw-calculator.colorblind-mode .primary-input {
    border-left-style: dashed !important;
}

.protein-mw-calculator.colorblind-mode .secondary-input {
    border-left-style: dotted !important;
}

.protein-mw-calculator.colorblind-mode .calculate-btn {
    position: relative;
    border: 2px solid var(--text-color);
}

.protein-mw-calculator.colorblind-mode .calculate-btn:after {
    content: "✓";
    position: absolute;
    right: 12px;
    font-weight: bold;
}

.protein-mw-calculator.colorblind-mode .reset-btn {
    position: relative;
    border: 2px solid var(--text-color);
}

.protein-mw-calculator.colorblind-mode .reset-btn:after {
    content: "↺";
    position: absolute;
    right: 12px;
    font-weight: bold;
}

.protein-mw-calculator.colorblind-mode .export-btn {
    border: 2px solid var(--text-color);
}

/* Ensure text visibility in all fields */
.protein-mw-calculator input::placeholder,
.protein-mw-calculator textarea::placeholder {
    color: #666;
    opacity: 0.8;
    font-size: 1.2rem;
}

/* Additional dropdowns styling */
.protein-mw-calculator .input-field select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 22px center;
    background-size: 20px;
    padding-right: 60px;
}

.protein-mw-calculator .input-field select option {
    padding: 20px 24px;
    background-color: var(--input-bg);
    color: var(--text-color);
    font-size: 1.2rem;
    line-height: 1.7;
}

/* Accessibility enhancements */
@media (prefers-reduced-motion: reduce) {
    .protein-mw-calculator * {
        transition: none !important;
    }
}

.protein-mw-calculator .visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus states for accessibility */
.protein-mw-calculator input:focus-visible,
.protein-mw-calculator textarea:focus-visible,
.protein-mw-calculator select:focus-visible,
.protein-mw-calculator button:focus-visible {
    outline: 4px solid var(--primary-accent);
    outline-offset: 2px;
}

/* Mobile optimizations - SIGNIFICANTLY INCREASED HEIGHTS */
@media (max-width: 767px) {
    .protein-mw-calculator {
        padding: 18px;
    }
    
    .protein-mw-calculator .panel {
        padding: 24px;
        margin-bottom: 28px;
    }
    
    .protein-mw-calculator .method-selector select {
        padding: 24px 26px;
        min-height: 95px;
        font-size: 1.25rem;
        background-position: right 24px center;
    }
    
    .protein-mw-calculator .input-field input,
    .protein-mw-calculator .input-field textarea,
    .protein-mw-calculator .input-field select {
        padding: 24px 26px;
        min-height: 95px;
        font-size: 1.25rem;
        border-width: 3px;
    }
    
    .protein-mw-calculator .input-field textarea {
        min-height: 250px;
        font-size: 1.25rem;
        line-height: 1.8;
    }
    
    .protein-mw-calculator .button-group {
        flex-direction: column;
        gap: 16px;
    }
    
    .protein-mw-calculator .button-group button {
        width: 100%;
        max-width: 100%;
        min-height: 85px;
        margin-bottom: 4px;
        font-size: 1.25rem;
    }
    
    .protein-mw-calculator .csv-upload .calculate-btn {
        width: 100%;
        max-width: 100%;
        min-height: 85px;
        font-size: 1.25rem;
    }
    
    .protein-mw-calculator .input-row {
        gap: 20px;
        margin-bottom: 24px;
    }
    
    .protein-mw-calculator .input-group {
        margin-bottom: 32px;
    }
    
    .protein-mw-calculator .result-value {
        font-size: 1.9rem;
    }
    
    .protein-mw-calculator .input-group-title {
        font-size: 1.15rem;
        margin-bottom: 18px;
    }
}

/* Extra small devices */
@media (max-width: 480px) {
    .protein-mw-calculator .method-selector select {
        font-size: 1.15rem;
        padding: 22px 24px;
        line-height: 1.6;
    }
    
    .protein-mw-calculator .method-selector select option {
        font-size: 1.15rem;
        padding: 20px 22px;
    }
    
    .protein-mw-calculator .input-group-title {
        font-size: 1.1rem;
    }
    
    .protein-mw-calculator .panel-title h2 {
        font-size: 1.25rem;
    }
    
    .protein-mw-calculator .input-field input,
    .protein-mw-calculator .input-field textarea,
    .protein-mw-calculator .input-field select {
        min-height: 90px;
        padding: 22px 24px;
    }
    
    .protein-mw-calculator .button-group button {
        min-height: 80px;
    }
}

/* Print styles */
@media print {
    .protein-mw-calculator .button-group,
    .protein-mw-calculator .csv-section,
    .protein-mw-calculator .trademark {
        display: none;
    }
}

/* Ensure no elements overflow their containers */
.protein-mw-calculator input,
.protein-mw-calculator textarea,
.protein-mw-calculator select,
.protein-mw-calculator button {
    max-width: 100%;
    box-sizing: border-box;
}

.protein-mw-calculator .input-row > * {
    max-width: 100%;
    overflow: hidden;
}

/* Fix for formula dropdown on all browsers */
.protein-mw-calculator select::-ms-expand {
    display: none;
}

.protein-mw-calculator select {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

/* Ensure all dropdown text is visible */
.protein-mw-calculator select option {
    white-space: normal !important;
    word-wrap: break-word !important;
    overflow-wrap: break-word !important;
    height: auto !important;
    line-height: 1.7 !important;
    padding: 20px 24px !important;
}

/* Prevent container overflow */
.protein-mw-calculator .calculator-container,
.protein-mw-calculator .panel,
.protein-mw-calculator .input-group,
.protein-mw-calculator .input-row {
    overflow: visible;
}

/* Ensure input text is clearly visible */
.protein-mw-calculator input,
.protein-mw-calculator textarea,
.protein-mw-calculator select {
    font-size: 1.2rem !important;
    line-height: 1.7 !important;
    padding-top: 24px !important;
    padding-bottom: 24px !important;
    padding-left: 28px !important;
    padding-right: 28px !important;
    min-height: 85px !important;
}