/* Base styles with fixed colors */
:root {
    --background: #F5F5F5;
    --panel: #E0E0E0;
    --text-primary: #222222;
    --accent-primary: #4A90E2;
    --accent-secondary: #FF9500;
    --input-bg: #f9f9f9;
    --input-border: #333333;
    --warning: #D32F2F;
    --profit: #2E7D32;
    --loss: #D32F2F;
    --neutral: #757575;
    --grid-line: #cccccc;
}

/* Colorblind mode adaptations - background remains fixed */
.colorblind-mode {
    --accent-primary: #000000;
    --accent-secondary: #555555;
    --profit: #000000;
    --loss: #555555;
}

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

.roi-calculator-container {
    font-family: 'Segoe UI', 'Roboto', 'Arial', sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    padding: 20px;
    min-height: 100vh;
}

.roi-calculator-container .container {
    display: flex;
    flex-direction: column;
    gap: 30px;
    max-width: 1600px;
    margin: 0 auto;
}

/* Input Panel */
.roi-calculator-container .input-panel {
    background-color: var(--panel);
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

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

.roi-calculator-container .panel-header h2 {
    color: var(--text-primary);
    font-size: 24px;
    font-weight: 600;
}

.roi-calculator-container .colorblind-toggle-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.roi-calculator-container .toggle-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.roi-calculator-container .toggle-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 30px;
}

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

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

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

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

.roi-calculator-container input:checked + .toggle-slider:before {
    transform: translateX(28px);
}

/* Form Grid */
.roi-calculator-container .form-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 25px;
}

.roi-calculator-container .form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

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

.roi-calculator-container .input-group.primary {
    border-left: 4px solid var(--accent-primary);
    padding-left: 12px;
}

.roi-calculator-container .input-group.secondary {
    border-left: 4px solid var(--accent-secondary);
    padding-left: 12px;
}

.roi-calculator-container .input-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 15px;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    overflow: visible;
}

.roi-calculator-container .symbol {
    font-weight: 700;
    font-size: 16px;
    color: var(--accent-primary);
}

.roi-calculator-container .hint {
    font-size: 13px;
    color: var(--neutral);
    font-style: italic;
    margin-top: -4px;
    white-space: normal;
}

/* Input Fields - AMPLE HEIGHT and CLEAR VISIBILITY */
.roi-calculator-container input,
.roi-calculator-container select {
    height: 44px !important;
    min-height: 44px !important;
    padding: 0 12px !important;
    border: 2px solid var(--input-border) !important;
    border-radius: 8px;
    background-color: var(--input-bg);
    color: var(--text-primary);
    font-size: 15px;
    transition: all 0.2s;
    width: 100%;
    line-height: normal !important;
}

.roi-calculator-container input:focus,
.roi-calculator-container select:focus {
    outline: 3px solid var(--accent-primary);
    outline-offset: 1px;
}

.roi-calculator-container input[type="number"] {
    -moz-appearance: textfield;
}

.roi-calculator-container input[type="number"]::-webkit-outer-spin-button,
.roi-calculator-container input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.roi-calculator-container .currency-selector {
    display: flex;
    gap: 10px;
    align-items: center;
}

.roi-calculator-container .currency-selector select {
    flex: 1;
    height: 44px !important;
    min-height: 44px !important;
}

.roi-calculator-container .currency-prefix {
    font-weight: 600;
    color: var(--text-primary);
    min-width: 40px;
}

/* Cash Flow Inputs */
.roi-calculator-container .cash-flow-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
    margin-top: 10px;
}

.roi-calculator-container .cash-flow-input {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.roi-calculator-container .cash-flow-input label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Button Row - AMPLE DISTANCE from last input */
.roi-calculator-container .button-row {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 25px !important;
    padding-top: 15px;
    flex-wrap: wrap;
}

.roi-calculator-container button {
    padding: 12px 28px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    min-width: 140px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

.roi-calculator-container .btn-reset {
    background-color: var(--panel);
    color: var(--text-primary);
    border: 2px solid var(--text-primary);
}

.roi-calculator-container .btn-export {
    background-color: var(--accent-secondary);
    color: white;
}

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

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

/* Results Panel */
.roi-calculator-container .results-panel {
    background-color: var(--panel);
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    min-height: 400px;
}

.roi-calculator-container .results-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

@media (min-width: 1200px) {
    .roi-calculator-container .results-container {
        grid-template-columns: 1fr 1fr;
    }
}

.roi-calculator-container .metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

.roi-calculator-container .metric-card {
    background-color: var(--background);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    border: 2px solid var(--grid-line);
}

.roi-calculator-container .metric-card.highlight {
    border-color: var(--accent-primary);
    background-color: rgba(74, 144, 226, 0.05);
}

.roi-calculator-container .metric-value {
    font-size: 28px;
    font-weight: 700;
    margin: 10px 0;
    color: var(--text-primary);
}

.roi-calculator-container .metric-value.positive {
    color: var(--profit);
}

.roi-calculator-container .metric-value.negative {
    color: var(--loss);
}

.roi-calculator-container .metric-label {
    font-size: 14px;
    color: var(--neutral);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Step-by-step Calculations */
.roi-calculator-container .calculation-steps {
    background-color: var(--background);
    border-radius: 10px;
    padding: 20px;
    margin: 25px 0;
    border: 2px solid var(--grid-line);
}

.roi-calculator-container .calculation-step {
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--grid-line);
}

.roi-calculator-container .calculation-step:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.roi-calculator-container .step-formula {
    font-family: 'Courier New', monospace;
    background-color: var(--input-bg);
    padding: 10px;
    border-radius: 6px;
    margin: 8px 0;
    border-left: 3px solid var(--accent-primary);
}

/* Analysis Sections */
.roi-calculator-container .analysis-section {
    background-color: var(--background);
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
    border: 2px solid var(--grid-line);
}

.roi-calculator-container .analysis-section h3 {
    color: var(--text-primary);
    margin-bottom: 15px;
    font-size: 18px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.roi-calculator-container .analysis-section h3::before {
    content: "•";
    color: var(--accent-primary);
    font-size: 24px;
}

.roi-calculator-container .analysis-content {
    color: var(--text-primary);
    line-height: 1.8;
}

/* SVG Visualization Container */
.roi-calculator-container .visualization-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 25px;
    margin-top: 25px;
}

.roi-calculator-container .svg-chart {
    background-color: var(--background);
    border-radius: 10px;
    padding: 20px;
    border: 2px solid var(--grid-line);
}

.roi-calculator-container .chart-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 15px;
    text-align: center;
}

/* Colorblind mode shapes */
.roi-calculator-container.colorblind-mode .btn-calculate {
    background-color: var(--accent-primary);
    position: relative;
}

.roi-calculator-container.colorblind-mode .btn-calculate::after {
    content: "✓";
    position: absolute;
    right: 10px;
}

.roi-calculator-container.colorblind-mode .btn-export {
    background-color: var(--accent-secondary);
    position: relative;
}

.roi-calculator-container.colorblind-mode .btn-export::after {
    content: "↓";
    position: absolute;
    right: 10px;
}

/* Trademark */
.roi-calculator-container .trademark {
    position: fixed;
    bottom: 20px;
    right: 20px;
    font-size: 12px;
    color: var(--neutral);
    opacity: 0.7;
    z-index: 1000;
}

/* Mobile Optimization */
@media (max-width: 768px) {
    .roi-calculator-container {
        padding: 10px;
    }
    
    .roi-calculator-container .input-panel,
    .roi-calculator-container .results-panel {
        padding: 15px;
    }
    
    .roi-calculator-container .form-row {
        grid-template-columns: 1fr;
    }
    
    .roi-calculator-container .button-row {
        flex-direction: column;
    }
    
    .roi-calculator-container button {
        width: 100%;
    }
    
    .roi-calculator-container .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .roi-calculator-container .trademark {
        position: static;
        text-align: center;
        margin-top: 30px;
    }
    
    .roi-calculator-container .panel-header {
        flex-wrap: wrap;
    }
    
    .roi-calculator-container .colorblind-toggle-container {
        margin-top: 10px;
    }
    
    .roi-calculator-container .input-group label {
        white-space: normal;
    }
}

/* Utility Classes */
.roi-calculator-container .error {
    color: var(--warning);
    font-size: 14px;
    margin-top: 5px;
    display: none;
}

.roi-calculator-container .warning {
    background-color: rgba(255, 149, 0, 0.1);
    border-left: 4px solid var(--accent-secondary);
    padding: 12px;
    margin: 15px 0;
    border-radius: 4px;
}

.roi-calculator-container .hidden {
    display: none !important;
}

.roi-calculator-container .visible {
    display: block;
}

.roi-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;
}

/* Export System Styles */
@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

.export-success-message {
    background-color: var(--profit, #2E7D32) !important;
    color: white !important;
    padding: 12px 20px !important;
    border-radius: 6px !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15) !important;
    font-size: 14px !important;
    animation: slideIn 0.3s ease-out !important;
    max-width: 300px !important;
    top: 20px !important;
    right: 20px !important;
}

.export-error-message {
    background-color: var(--warning, #D32F2F) !important;
    color: white !important;
    padding: 12px 20px !important;
    border-radius: 6px !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15) !important;
    font-size: 14px !important;
    animation: slideIn 0.3s ease-out !important;
    max-width: 300px !important;
    top: 20px !important;
    right: 20px !important;
}

.export-success-message::before {
    content: "✓ " !important;
    margin-right: 8px !important;
    font-weight: bold !important;
}

.export-error-message::before {
    content: "⚠ " !important;
    margin-right: 8px !important;
    font-weight: bold !important;
}

/* Browser compatibility tooltip */
.browser-compatibility-tooltip {
    position: absolute !important;
    background: #333 !important;
    color: white !important;
    padding: 8px 12px !important;
    border-radius: 4px !important;
    font-size: 12px !important;
    white-space: nowrap !important;
    z-index: 10001 !important;
    pointer-events: none !important;
    transform: translateY(-100%) !important;
    margin-top: -8px !important;
}