/* Retirement Calculator - Mobile First CSS */
:root {
    --background: #ffffff;
    --card-bg: #f9fafb;
    --border: #e5e7eb;
    --text: #111827;
    --primary: #22c55e;
    --primary-hover: #16a34a;
    --secondary: #2563eb;
    --title-bg: #2CEC00;
    --title-text: #ffffff;
    --error: #ef4444;
    --warning: #f59e0b;
    --success: #10b981;
}

/* Reset & Base Styles */
.retirement-calculator-container * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.retirement-calculator-container {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--background);
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

/* Title Section */
.calculator-title-section {
    background: var(--title-bg);
    color: var(--title-text);
    padding: 2rem 1rem;
    text-align: center;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
}

.calculator-title-section h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.calculator-title-section p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Form Container */
.calculator-form-container {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.form-section {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.form-section:last-of-type {
    border-bottom: none;
    margin-bottom: 0;
}

.form-section h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text);
    font-weight: 600;
}

/* Form Grid */
.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
}

/* Form Group */
.form-group {
    position: relative;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.375rem;
    color: var(--text);
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    background: var(--background);
    color: var(--text);
    transition: border-color 0.2s;
    min-height: 44px; /* Touch target */
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.form-group input:invalid {
    border-color: var(--error);
}

/* Input with Currency Symbol */
.input-with-symbol {
    position: relative;
}

.currency-symbol {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text);
    font-weight: 500;
}

.input-with-symbol input {
    padding-left: 2rem;
}

.input-unit {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: #6b7280;
    font-size: 0.875rem;
}

/* Error Messages */
.error-message {
    color: var(--error);
    font-size: 0.75rem;
    margin-top: 0.25rem;
    min-height: 1rem;
}

/* Toggle Advanced Options */
.toggle-advanced {
    width: 100%;
    padding: 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text);
    cursor: pointer;
    transition: background-color 0.2s;
    min-height: 44px;
}

.toggle-advanced:hover {
    background: #f3f4f6;
}

.toggle-advanced span {
    font-size: 1.25rem;
    transition: transform 0.3s;
}

.toggle-advanced.active span {
    transform: rotate(45deg);
}

.advanced-options {
    margin-top: 1rem;
    padding: 1.5rem;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
}

/* Buttons */
.form-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

.primary-btn, .secondary-btn {
    padding: 1rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.primary-btn {
    background: var(--primary);
    color: white;
}

.primary-btn:hover {
    background: var(--primary-hover);
}

.secondary-btn {
    background: var(--secondary);
    color: white;
}

.secondary-btn:hover {
    background: #1d4ed8;
}

.loading-spinner {
    display: none;
}

.primary-btn.loading .btn-text {
    display: none;
}

.primary-btn.loading .loading-spinner {
    display: block;
}

/* Results Container */
.results-container {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-top: 2rem;
}

.results-header {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border);
}

.results-header h2 {
    font-size: 1.5rem;
    color: var(--text);
}

.results-actions {
    display: flex;
    gap: 1rem;
}

/* Summary Cards */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.summary-card {
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1.5rem;
    text-align: center;
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.summary-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #6b7280;
}

.card-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.summary-card p {
    font-size: 0.875rem;
    color: #6b7280;
}

/* Progress Section */
.progress-section {
    margin-bottom: 2rem;
}

.progress-section h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.progress-bar-container {
    margin-bottom: 0.5rem;
}

.progress-bar {
    height: 1rem;
    background: var(--border);
    border-radius: 0.5rem;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 0.5rem;
    transition: width 1s ease-in-out;
}

.progress-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: #6b7280;
}

.progress-text {
    font-size: 1rem;
    text-align: center;
    margin-top: 1rem;
}

/* Charts Container */
.charts-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.chart-wrapper {
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1.5rem;
}

.chart-wrapper h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    text-align: center;
}

.chart-wrapper canvas {
    width: 100% !important;
    height: 250px !important;
}

/* Breakdown Section */
.breakdown-section {
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.breakdown-section h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.breakdown-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}

.breakdown-item:last-child {
    border-bottom: none;
}

.breakdown-label {
    font-size: 0.875rem;
    color: #6b7280;
}

.breakdown-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
}

/* Timeline Table */
.timeline-section {
    margin-bottom: 2rem;
}

.timeline-section h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    background: var(--background);
}

#timeline-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

#timeline-table th,
#timeline-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

#timeline-table th {
    background: var(--card-bg);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text);
    position: sticky;
    top: 0;
}

#timeline-table tr:last-child td {
    border-bottom: none;
}

#timeline-table tr:hover {
    background: var(--card-bg);
}

/* Recommendations */
.recommendations-section {
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.recommendations-section h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.recommendations-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.recommendations-list div {
    padding: 0.75rem;
    background: var(--card-bg);
    border-left: 3px solid var(--primary);
    border-radius: 0.25rem;
}

/* Results Actions Bottom */
.results-actions-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

/* Responsive Design */
@media (min-width: 481px) {
    .retirement-calculator-container {
        padding: 2rem;
    }
    
    .calculator-title-section {
        padding: 2.5rem 2rem;
    }
    
    .calculator-form-container {
        padding: 2rem;
    }
    
    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-actions {
        flex-direction: row;
        justify-content: center;
    }
    
    .results-actions {
        flex-direction: row;
        justify-content: flex-end;
    }
}

@media (min-width: 769px) {
    .charts-container {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .breakdown-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .chart-wrapper canvas {
        height: 300px !important;
    }
}

@media (max-width: 360px) {
    .retirement-calculator-container {
        padding: 0.75rem;
    }
    
    .calculator-title-section {
        padding: 1.5rem 1rem;
    }
    
    .calculator-form-container,
    .results-container {
        padding: 1rem;
    }
    
    .summary-cards {
        grid-template-columns: 1fr;
    }
    
    .primary-btn,
    .secondary-btn {
        padding: 0.875rem 1rem;
        font-size: 0.875rem;
    }
}

/* Print Styles */
@media print {
    .retirement-calculator-container {
        padding: 0;
        max-width: none;
    }
    
    .calculator-title-section {
        background: #000 !important;
        color: #fff !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    
    .form-actions,
    .results-actions,
    .results-actions-bottom,
    .toggle-advanced {
        display: none !important;
    }
    
    .results-container {
        display: block !important;
        border: none;
        padding: 0;
    }
    
    .summary-cards {
        break-inside: avoid;
    }
    
    .chart-wrapper {
        break-inside: avoid;
        page-break-inside: avoid;
    }
    
    .table-container {
        overflow: visible;
    }
    
    #timeline-table {
        min-width: auto;
    }
}

/* Accessibility */
.retirement-calculator-container button:focus,
.retirement-calculator-container input:focus,
.retirement-calculator-container select:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.retirement-calculator-container [aria-invalid="true"] {
    border-color: var(--error);
}

.retirement-calculator-container [aria-hidden="true"] {
    display: none;
}

/* Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results-container {
    animation: fadeIn 0.5s ease-out;
}