/* Base Styles with Fixed Color Scheme */
:root {
    --bg-color: #F5F5F5;
    --panel-color: #E0E0E0;
    --text-color: #222222;
    --accent-primary: #4A90E2;
    --accent-secondary: #FF9500;
    --error-color: #D32F2F;
    --success-color: #388E3C;
    --border-color: #333333;
    --input-bg: #f9f9f9;
    --grid-gap: 16px;
    --border-radius: 8px;
    --input-height: 44px;
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Colorblind Mode Adaptations */
.colorblind-mode {
    --accent-primary: #0077CC;
    --accent-secondary: #DD7700;
    --error-color: #990000;
    --success-color: #006600;
}

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

.clac360-beam-calculator-container {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 20px;
    min-height: 100vh;
    transition: all 0.3s ease;
}

.clac360-beam-calculator-container .container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--grid-gap);
}

/* Main Content Layout */
.clac360-beam-calculator-container .main-content {
    display: flex;
    flex-direction: column;
    gap: var(--grid-gap);
}

@media (min-width: 992px) {
    .clac360-beam-calculator-container .main-content {
        flex-direction: row;
    }
}

.clac360-beam-calculator-container .input-panel,
.clac360-beam-calculator-container .results-panel {
    background-color: var(--panel-color);
    border-radius: var(--border-radius);
    padding: 24px;
    border: 2px solid var(--border-color);
}

.clac360-beam-calculator-container .input-panel {
    flex: 1;
    min-width: 300px;
}

.clac360-beam-calculator-container .results-panel {
    flex: 2;
    min-width: 500px;
}

.clac360-beam-calculator-container .panel-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.clac360-beam-calculator-container .panel-title-text {
    font-size: 1.4rem;
    font-weight: 600;
}

.clac360-beam-calculator-container .colorblind-toggle-container {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: auto;
}

.clac360-beam-calculator-container .toggle-label {
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
}

.clac360-beam-calculator-container .toggle-switch {
    position: relative;
    width: 60px;
    height: 30px;
    flex-shrink: 0;
}

.clac360-beam-calculator-container .toggle-checkbox {
    opacity: 0;
    width: 0;
    height: 0;
}

.clac360-beam-calculator-container .toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--panel-color);
    border: 2px solid var(--border-color);
    border-radius: 34px;
    transition: .4s;
}

.clac360-beam-calculator-container .toggle-slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 2px;
    bottom: 2px;
    background-color: var(--accent-primary);
    border-radius: 50%;
    transition: .4s;
}

.clac360-beam-calculator-container .toggle-checkbox:checked + .toggle-slider:before {
    transform: translateX(30px);
    background-color: var(--accent-secondary);
}

/* Input Form Styling - VERTICAL STACK ONLY */
.clac360-beam-calculator-container .form-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.clac360-beam-calculator-container .form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.clac360-beam-calculator-container .form-label {
    font-weight: 500;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.clac360-beam-calculator-container .hint-text {
    font-size: 0.85rem;
    color: #666;
    font-weight: normal;
    margin-top: 2px;
}

.clac360-beam-calculator-container .required-marker {
    color: var(--error-color);
}

.clac360-beam-calculator-container .form-input,
.clac360-beam-calculator-container .form-select {
    height: var(--input-height);
    padding: 12px; /* Increased padding for better text visibility */
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--input-bg);
    font-size: 1rem;
    color: var(--text-color);
    transition: all 0.2s ease;
    font-family: var(--font-family);
    min-height: 48px; /* Ensure ample height */
}

.clac360-beam-calculator-container .form-select {
    padding: 11px 12px; /* Adjusted for select boxes */
}

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

.clac360-beam-calculator-container .form-input.error {
    border-color: var(--error-color);
}

.clac360-beam-calculator-container .secondary-input {
    opacity: 0.9;
    border-style: dashed;
}

/* Button Styling */
.clac360-beam-calculator-container .button-row {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    flex-wrap: wrap;
}

.clac360-beam-calculator-container .btn {
    padding: 12px 24px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: var(--font-family);
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.clac360-beam-calculator-container .btn-primary {
    background-color: var(--accent-primary);
    color: white;
    flex: 1;
    min-width: 140px;
}

.clac360-beam-calculator-container .btn-secondary {
    background-color: var(--panel-color);
    color: var(--text-color);
    flex: 1;
    min-width: 140px;
}

.clac360-beam-calculator-container .btn-export {
    background-color: var(--accent-secondary);
    color: white;
    flex: 1;
    min-width: 140px;
}

.clac360-beam-calculator-container .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

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

.clac360-beam-calculator-container .btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Results Section */
.clac360-beam-calculator-container .results-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.clac360-beam-calculator-container .results-header {
    background-color: var(--input-bg);
    padding: 16px;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--accent-primary);
}

.clac360-beam-calculator-container .beam-type-display {
    font-weight: 600;
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.clac360-beam-calculator-container .reaction-values {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 12px;
}

.clac360-beam-calculator-container .reaction-value {
    background-color: var(--bg-color);
    padding: 12px 16px;
    border-radius: var(--border-radius);
    border: 2px solid var(--border-color);
    min-width: 150px;
}

.clac360-beam-calculator-container .reaction-label {
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.clac360-beam-calculator-container .reaction-number {
    font-size: 1.4rem;
    font-weight: 600;
}

.clac360-beam-calculator-container .reaction-uplift {
    color: var(--error-color);
    font-weight: 600;
}

/* Step by Step Calculations - SCROLL REMOVED HARMONIOUSLY */
.clac360-beam-calculator-container .calculation-steps {
    background-color: var(--input-bg);
    padding: 20px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    /* Removed max-height and overflow-y to eliminate internal scroll */
    max-height: none;
    overflow-y: visible;
}

.clac360-beam-calculator-container .steps-title {
    font-weight: 600;
    margin-bottom: 12px;
    font-size: 1.1rem;
}

.clac360-beam-calculator-container .step {
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px dashed var(--border-color);
}

.clac360-beam-calculator-container .step:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.clac360-beam-calculator-container .step-equation {
    font-family: 'Courier New', monospace;
    background-color: var(--bg-color);
    padding: 10px;
    border-radius: 4px;
    margin: 8px 0;
    overflow-x: auto;
}

.clac360-beam-calculator-container .step-description {
    font-size: 0.95rem;
    margin-bottom: 6px;
}

/* Engineering Analysis Sections */
.clac360-beam-calculator-container .analysis-section {
    background-color: var(--input-bg);
    padding: 20px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.clac360-beam-calculator-container .analysis-title {
    font-weight: 600;
    margin-bottom: 12px;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.clac360-beam-calculator-container .analysis-content {
    font-size: 0.95rem;
}

.clac360-beam-calculator-container .analysis-content p {
    margin-bottom: 10px;
}

.clac360-beam-calculator-container .recommendation-list {
    padding-left: 20px;
    margin-top: 8px;
}

.clac360-beam-calculator-container .recommendation-list li {
    margin-bottom: 6px;
}

/* SVG Visualization - SCROLL REMOVED HARMONIOUSLY */
.clac360-beam-calculator-container .svg-container {
    background-color: white;
    border-radius: var(--border-radius);
    border: 2px solid var(--border-color);
    padding: 20px;
    /* Removed overflow: auto to eliminate internal scroll */
    overflow: visible;
}

.clac360-beam-calculator-container .svg-title {
    font-weight: 600;
    margin-bottom: 12px;
    font-size: 1.1rem;
}

.clac360-beam-calculator-container .svg-wrapper {
    width: 100%;
    min-height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
    /* Ensure SVG doesn't cause overflow */
    max-width: 100%;
}

.clac360-beam-calculator-container #reactionDiagram {
    max-width: 100%;
    height: auto;
    /* Ensure SVG scales properly without scroll */
    width: 100%;
    height: 100%;
}

/* Error and Warning States */
.clac360-beam-calculator-container .error-message {
    background-color: rgba(211, 47, 47, 0.1);
    border: 2px solid var(--error-color);
    color: var(--error-color);
    padding: 16px;
    border-radius: var(--border-radius);
    margin: 16px 0;
    font-weight: 500;
}

.clac360-beam-calculator-container .warning-message {
    background-color: rgba(255, 149, 0, 0.1);
    border: 2px solid var(--accent-secondary);
    color: var(--text-color);
    padding: 16px;
    border-radius: var(--border-radius);
    margin: 16px 0;
    font-weight: 500;
}

.clac360-beam-calculator-container .success-message {
    background-color: rgba(56, 142, 60, 0.1);
    border: 2px solid var(--success-color);
    color: var(--text-color);
    padding: 16px;
    border-radius: var(--border-radius);
    margin: 16px 0;
    font-weight: 500;
}

/* Footer */
.clac360-beam-calculator-container .footer {
    text-align: center;
    padding: 20px 0;
    margin-top: 20px;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: #666;
}

.clac360-beam-calculator-container .trademark {
    position: fixed;
    bottom: 10px;
    right: 10px;
    font-size: 0.8rem;
    color: #666;
    background-color: var(--panel-color);
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    z-index: 100;
}

/* Enhanced Colorblind Mode Adaptations */
.colorblind-mode .btn-primary {
    position: relative;
    overflow: hidden;
    background-image: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 5px,
        rgba(255, 255, 255, 0.3) 5px,
        rgba(255, 255, 255, 0.3) 10px
    );
    border-style: solid;
    border-width: 3px;
}

.colorblind-mode .btn-primary:after {
    content: "→";
    position: absolute;
    right: 10px;
    font-weight: bold;
    font-size: 1.2rem;
}

.colorblind-mode .btn-export {
    position: relative;
    background-image: repeating-linear-gradient(
        -45deg,
        transparent,
        transparent 5px,
        rgba(255, 255, 255, 0.3) 5px,
        rgba(255, 255, 255, 0.3) 10px
    );
    border-style: double;
    border-width: 4px;
}

.colorblind-mode .btn-export:before {
    content: "↓";
    margin-right: 6px;
    font-weight: bold;
    font-size: 1.2rem;
}

.colorblind-mode .btn-secondary {
    background-image: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 3px,
        rgba(0, 0, 0, 0.1) 3px,
        rgba(0, 0, 0, 0.1) 6px
    );
    border-style: dashed;
    border-width: 2px;
}

.colorblind-mode .form-input, 
.colorblind-mode .form-select {
    border-width: 3px;
    border-style: solid;
    background-image: linear-gradient(45deg, transparent 50%, rgba(0, 0, 0, 0.05) 50%);
    background-size: 10px 10px;
}

.colorblind-mode .form-input:focus, 
.colorblind-mode .form-select:focus {
    border-width: 3px;
    border-style: double;
    background-image: linear-gradient(45deg, transparent 50%, rgba(0, 0, 0, 0.1) 50%);
}

.colorblind-mode .form-input.secondary-input,
.colorblind-mode .form-select option[value=""] {
    border-style: dotted;
    background-image: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 5px,
        rgba(0, 0, 0, 0.05) 5px,
        rgba(0, 0, 0, 0.05) 10px
    );
}

.colorblind-mode .reaction-uplift:before {
    content: "⛔ ";
    font-size: 1.2rem;
}

.colorblind-mode .reaction-uplift {
    text-decoration: underline wavy var(--error-color);
    text-underline-offset: 4px;
}

.colorblind-mode .error-message {
    border-style: double;
    border-width: 4px;
    background-image: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 5px,
        rgba(211, 47, 47, 0.1) 5px,
        rgba(211, 47, 47, 0.1) 10px
    );
}

.colorblind-mode .warning-message {
    border-style: dashed;
    border-width: 3px;
    background-image: repeating-linear-gradient(
        -45deg,
        transparent,
        transparent 5px,
        rgba(255, 149, 0, 0.1) 5px,
        rgba(255, 149, 0, 0.1) 10px
    );
}

.colorblind-mode .success-message {
    border-style: dotted;
    border-width: 3px;
    background-image: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 5px,
        rgba(56, 142, 60, 0.1) 5px,
        rgba(56, 142, 60, 0.1) 10px
    );
}

.colorblind-mode .panel-title {
    border-bottom-style: double;
}

.colorblind-mode .analysis-section {
    border-left: 6px solid var(--border-color);
}

.colorblind-mode .reaction-value {
    box-shadow: inset 0 0 0 2px var(--border-color);
}

/* Mobile Optimizations */
@media (max-width: 767px) {
    .clac360-beam-calculator-container .container {
        padding: 10px;
    }
    
    .clac360-beam-calculator-container .input-panel,
    .clac360-beam-calculator-container .results-panel {
        padding: 16px;
    }
    
    .clac360-beam-calculator-container .button-row {
        flex-direction: column;
    }
    
    .clac360-beam-calculator-container .btn {
        width: 100%;
    }
    
    .clac360-beam-calculator-container .reaction-values {
        flex-direction: column;
    }
    
    .clac360-beam-calculator-container .reaction-value {
        width: 100%;
    }
    
    .clac360-beam-calculator-container .panel-title {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .clac360-beam-calculator-container .colorblind-toggle-container {
        margin-left: 0;
        align-self: stretch;
        justify-content: space-between;
    }

    .colorblind-mode .btn-primary:after,
    .colorblind-mode .btn-export:before {
        font-size: 1rem;
    }
    
    /* Ensure no scroll issues on mobile */
    .clac360-beam-calculator-container .calculation-steps,
    .clac360-beam-calculator-container .svg-container {
        overflow: visible;
    }
    
    .clac360-beam-calculator-container .svg-wrapper {
        min-height: 300px;
    }
}

/* Print Styles */
@media print {
    .clac360-beam-calculator-container .btn,
    .clac360-beam-calculator-container .colorblind-toggle-container,
    .clac360-beam-calculator-container .trademark {
        display: none;
    }
    
    .clac360-beam-calculator-container .input-panel {
        break-inside: avoid;
    }
    
    .clac360-beam-calculator-container .results-panel {
        break-inside: avoid;
    }
}