/* Color Specifications - Fixed, Non-Modifiable */
:root {
    --background: #F5F5F5;
    --panel: #E0E0E0;
    --text: #222222;
    --accent-primary: #4A90E2;
    --accent-secondary: #FF9500;
    --input-bg: #f9f9f9;
    --border: #333333;
    --error: #d32f2f;
    --success: #388e3c;
    --warning: #f57c00;
}

/* Colorblind Mode Variables */
.colorblind-mode {
    --accent-primary: #0056b3;
    --accent-secondary: #b35a00;
}

.clac360-calculator-container * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.clac360-calculator-container body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    padding: 20px;
}

.clac360-calculator-container .main-container {
    display: flex;
    flex-direction: column;
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.clac360-calculator-container .title-section {
    text-align: center;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--accent-primary);
}

/* Input and Output Containers - Parallel Vertical Layout */
.clac360-calculator-container .calculator-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    min-height: 600px;
}

@media (max-width: 1024px) {
    .clac360-calculator-container .calculator-container {
        grid-template-columns: 1fr;
    }
}

.clac360-calculator-container .input-panel,
.clac360-calculator-container .output-panel {
    background-color: var(--panel);
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
}

.clac360-calculator-container .panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border);
}

.clac360-calculator-container .panel-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text);
}

/* Colorblind Mode Toggle */
.clac360-calculator-container .colorblind-toggle-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.clac360-calculator-container .toggle-label {
    font-size: 0.9rem;
    color: var(--text);
}

.clac360-calculator-container .toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

.clac360-calculator-container .toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.clac360-calculator-container .toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 34px;
}

.clac360-calculator-container .toggle-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

.clac360-calculator-container input:checked + .toggle-slider {
    background-color: var(--accent-primary);
}

.clac360-calculator-container input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

/* Input Form Grid */
.clac360-calculator-container .form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

@media (max-width: 768px) {
    .clac360-calculator-container .form-grid {
        grid-template-columns: 1fr;
    }
}

.clac360-calculator-container .form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.clac360-calculator-container .form-row {
    display: flex;
    gap: 15px;
    align-items: flex-end;
}

.clac360-calculator-container .input-with-unit {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.clac360-calculator-container label {
    font-weight: 600;
    color: var(--text);
    font-size: 0.95rem;
}

.clac360-calculator-container .hint {
    font-size: 0.85rem;
    color: #666;
    font-style: italic;
    margin-bottom: 5px;
}

/* Input Fields - Enhanced Visibility */
.clac360-calculator-container input,
.clac360-calculator-container select {
    width: 100%;
    padding: 14px;
    border: 2px solid var(--border);
    border-radius: 6px;
    background-color: var(--input-bg);
    font-size: 1rem;
    color: var(--text);
    transition: all 0.3s ease;
    height: 52px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.clac360-calculator-container input:focus,
.clac360-calculator-container select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
}

.clac360-calculator-container input.error {
    border-color: var(--error);
    background-color: rgba(211, 47, 47, 0.05);
}

.clac360-calculator-container .unit-selector {
    min-width: 100px;
}

/* Button Container */
.clac360-calculator-container .button-container {
    display: flex;
    gap: 15px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.clac360-calculator-container button {
    padding: 14px 28px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.clac360-calculator-container .btn-calculate {
    background-color: var(--accent-primary);
    color: white;
    flex: 2;
}

.clac360-calculator-container .btn-reset {
    background-color: var(--accent-secondary);
    color: white;
    flex: 1;
}

.clac360-calculator-container .btn-export {
    background-color: #34a853;
    color: white;
    flex: 1;
}

.clac360-calculator-container button:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.clac360-calculator-container button:active {
    transform: translateY(0);
}

.clac360-calculator-container button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Results Section - Remove vertical scroll on large screens */
.clac360-calculator-container .results-content {
    flex: 1;
    overflow-y: auto;
    padding-right: 10px;
}

@media (min-width: 1025px) {
    .clac360-calculator-container .results-content {
        overflow-y: visible;
        max-height: none;
        padding-right: 0;
    }
    
    .clac360-calculator-container .output-panel {
        min-height: auto;
        height: auto;
    }
}

/* FIX: Ensure Calculation Results section is always visible */
.clac360-calculator-container #calculationResultsSection {
    display: block !important;
}

.clac360-calculator-container .result-section {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid #ddd;
}

.clac360-calculator-container .result-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.clac360-calculator-container .result-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    padding: 10px;
    background-color: rgba(255, 255, 255, 0.7);
    border-radius: 4px;
}

.clac360-calculator-container .result-label {
    font-weight: 600;
}

.clac360-calculator-container .result-value {
    font-weight: 600;
    color: var(--text);
}

.clac360-calculator-container .status {
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    text-align: center;
    margin-top: 10px;
}

.clac360-calculator-container .status-safe {
    background-color: rgba(56, 142, 60, 0.2);
    color: var(--success);
    border: 2px solid var(--success);
}

.clac360-calculator-container .status-unsafe {
    background-color: rgba(211, 47, 47, 0.2);
    color: var(--error);
    border: 2px solid var(--error);
}

.clac360-calculator-container .step-calculation {
    background-color: rgba(255, 255, 255, 0.8);
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 15px;
    border-left: 4px solid var(--accent-primary);
}

.clac360-calculator-container .step-title {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text);
}

.clac360-calculator-container .step-equation {
    font-family: 'Courier New', monospace;
    background-color: #f0f0f0;
    padding: 10px;
    border-radius: 4px;
    margin: 10px 0;
    white-space: pre-wrap;
    border: 1px solid #ddd;
}

.clac360-calculator-container .dynamic-comments,
.clac360-calculator-container .dynamic-analysis,
.clac360-calculator-container .dynamic-recommendations {
    background-color: rgba(255, 255, 255, 0.9);
    padding: 20px;
    border-radius: 6px;
    margin-top: 20px;
    border: 1px solid #ddd;
}

.clac360-calculator-container .dynamic-comments {
    border-left: 4px solid #4A90E2;
}

.clac360-calculator-container .dynamic-analysis {
    border-left: 4px solid #FF9500;
}

.clac360-calculator-container .dynamic-recommendations {
    border-left: 4px solid #34a853;
}

.clac360-calculator-container .subsection-title {
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text);
    font-size: 1.1rem;
}

/* SVG Visualization Container */
.clac360-calculator-container .svg-container {
    margin-top: 20px;
    border: 1px solid #ddd;
    border-radius: 6px;
    overflow: hidden;
    background-color: white;
}

.clac360-calculator-container .svg-title {
    background-color: var(--panel);
    padding: 12px;
    font-weight: 600;
    text-align: center;
    border-bottom: 1px solid #ddd;
}

/* Error Messages */
.clac360-calculator-container .error-message {
    background-color: rgba(211, 47, 47, 0.1);
    color: var(--error);
    padding: 15px;
    border-radius: 6px;
    border-left: 4px solid var(--error);
    margin-bottom: 20px;
    font-weight: 600;
}

.clac360-calculator-container .warning-message {
    background-color: rgba(245, 124, 0, 0.1);
    color: var(--warning);
    padding: 15px;
    border-radius: 6px;
    border-left: 4px solid var(--warning);
    margin-bottom: 20px;
}

/* Trade Mark */
.clac360-calculator-container .trademark {
    position: fixed;
    bottom: 20px;
    right: 20px;
    font-size: 0.8rem;
    color: #666;
    z-index: 1000;
    background-color: rgba(245, 245, 245, 0.9);
    padding: 5px 10px;
    border-radius: 4px;
    border: 1px solid #ddd;
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .clac360-calculator-container body {
        padding: 10px;
    }
    
    .clac360-calculator-container .calculator-container {
        gap: 20px;
    }
    
    .clac360-calculator-container .input-panel,
    .clac360-calculator-container .output-panel {
        padding: 15px;
    }
    
    .clac360-calculator-container .button-container {
        flex-direction: column;
    }
    
    .clac360-calculator-container button {
        width: 100%;
    }
    
    .clac360-calculator-container .form-row {
        flex-direction: column;
        gap: 10px;
    }
    
    .clac360-calculator-container .trademark {
        position: static;
        text-align: center;
        margin-top: 20px;
        background-color: transparent;
        border: none;
    }
}

/* Accessibility */
.clac360-calculator-container .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Colorblind Mode Shape Indicators */
.colorblind-mode .clac360-calculator-container .btn-calculate {
    position: relative;
}

.colorblind-mode .clac360-calculator-container .btn-calculate::before {
    content: "=";
    position: absolute;
    left: 15px;
    font-weight: bold;
}

.colorblind-mode .clac360-calculator-container .btn-reset {
    position: relative;
}

.colorblind-mode .clac360-calculator-container .btn-reset::before {
    content: "↺";
    position: absolute;
    left: 15px;
    font-weight: bold;
}

.colorblind-mode .clac360-calculator-container .btn-export {
    position: relative;
}

.colorblind-mode .clac360-calculator-container .btn-export::before {
    content: "↓";
    position: absolute;
    left: 15px;
    font-weight: bold;
}

/* Focus indicators for keyboard navigation */
.clac360-calculator-container button:focus,
.clac360-calculator-container input:focus,
.clac360-calculator-container select:focus {
    outline: 3px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Ensure select dropdown has proper height */
.clac360-calculator-container select option {
    padding: 12px !important;
    height: 40px !important;
    line-height: 40px !important;
    font-size: 14px !important;
}

/* Ensure text in input fields is visible */
.clac360-calculator-container input[type="number"],
.clac360-calculator-container input[type="text"] {
    padding-top: 14px !important;
    padding-bottom: 14px !important;
    line-height: 1.4 !important;
}

/* Prevent overlapping */
.clac360-calculator-container .input-with-unit input,
.clac360-calculator-container .input-with-unit select {
    margin-bottom: 0 !important;
}

/* Ample gap between last input field and buttons */
.clac360-calculator-container .button-container {
    margin-top: 40px !important;
}