:root {
    /* Color System */
    --color-primary: #218b8f;
    --color-primary-hover: #1d7579;
    --color-primary-active: #1a6a6e;
    --color-primary-rgb: 33, 139, 143;
    --color-secondary: rgba(94, 82, 64, 0.12);
    --color-secondary-hover: rgba(94, 82, 64, 0.2);
    --color-secondary-active: rgba(94, 82, 64, 0.25);
    --color-background: #fcfcf9;
    --color-surface: #fffffd;
    --color-text: #133441;
    --color-text-secondary: #626c71;
    --color-border: rgba(94, 82, 64, 0.2);
    --color-success: #22c55e;
    --color-success-rgb: 34, 197, 94;
    --color-success-light: rgba(34, 197, 94, 0.1);
    --color-error: #c01530;
    --color-warning: #ea8361;
    --color-info: #626c71;
    --color-info-rgb: 98, 108, 113;

    /* Typography */
    --font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 12px;
    --font-size-base: 14px;
    --font-size-md: 14px;
    --font-size-lg: 16px;
    --font-size-xl: 18px;
    --font-size-2xl: 20px;
    --font-size-3xl: 24px;
    --font-size-4xl: 30px;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 550;
    --font-weight-bold: 600;

    /* Spacing */
    --space-4: 4px;
    --space-6: 6px;
    --space-8: 8px;
    --space-10: 10px;
    --space-12: 12px;
    --space-16: 16px;
    --space-20: 20px;
    --space-24: 24px;
    --space-32: 32px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-base: 8px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --radius-full: 50px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04), 0 2px 4px -1px rgba(0, 0, 0, 0.02);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.02);

    /* Animation */
    --transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
    --transition-normal: 250ms cubic-bezier(0.16, 1, 0.3, 1);

    /* Layout */
    --container-max-width: 1200px;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --color-background: #1f2121;
        --color-surface: #262828;
        --color-text: #f5f5f5;
        --color-text-secondary: rgba(245, 245, 245, 0.7);
        --color-border: rgba(119, 124, 124, 0.3);
        --color-primary: #32b8c6;
        --color-success: #32b8c6;
    }
}

/* Base styles */
* {
    box-sizing: border-box;
}

html {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
}

body {
    margin: 0;
    padding: 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin: 0;
    font-weight: var(--font-weight-semibold);
    line-height: 1.2;
    color: var(--color-text);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }

p {
    margin: 0 0 var(--space-16) 0;
}

/* Layout */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-16);
}

/* Header with Contact Button */
.header {
    text-align: center;
    padding: var(--space-32) 0;
    background: rgba(33, 139, 143, 0.08);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-32);
    position: relative;
}

.header-top {
    position: absolute;
    top: var(--space-16);
    right: var(--space-16);
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-8);
    padding: var(--space-8) var(--space-16);
    background: var(--color-primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-base);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.contact-btn:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.contact-btn:active {
    transform: translateY(0);
}

.header h1 {
    margin-bottom: var(--space-8);
    color: var(--color-primary);
}

.header p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    margin: 0;
}

/* Cards */
.card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition-normal);
    margin-bottom: var(--space-24);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card__header {
    padding: var(--space-16);
    border-bottom: 1px solid var(--color-border);
}

.card__body {
    padding: var(--space-16);
}

/* Form Styles */
.form-section {
    margin-bottom: var(--space-32);
}

.form-section h3 {
    margin-bottom: var(--space-16);
    padding-bottom: var(--space-8);
    border-bottom: 2px solid var(--color-border);
    color: var(--color-primary);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-16);
}

.form-group {
    margin-bottom: 0;
}

.form-label {
    display: block;
    margin-bottom: var(--space-8);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    color: var(--color-text);
    position: relative;
}

.form-control {
    width: 100%;
    padding: var(--space-8) var(--space-12);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-base);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(33, 139, 143, 0.1);
}

select.form-control {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right var(--space-8) center;
    background-repeat: no-repeat;
    background-size: 16px 16px;
    padding-right: var(--space-32);
}

/* Tooltip Styles */
.tooltip {
    position: relative;
    cursor: help;
}

.tooltip::after {
    content: "ℹ️";
    position: absolute;
    top: 0;
    right: -20px;
    font-size: var(--font-size-sm);
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.tooltip:hover::after {
    opacity: 1;
}

.tooltip[data-tooltip]::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(19, 52, 65, 0.95);
    color: white;
    padding: var(--space-8) var(--space-12);
    border-radius: var(--radius-base);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-normal);
    line-height: 1.4;
    max-width: 280px;
    width: max-content;
    white-space: normal;
    word-wrap: break-word;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
    margin-bottom: var(--space-8);
    box-shadow: var(--shadow-lg);
}

.tooltip[data-tooltip]::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 6px solid rgba(19, 52, 65, 0.95);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
    margin-bottom: 2px;
}

.tooltip:hover::before,
.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}

/* Risk Profile Slider */
.risk-slider-container {
    margin-top: var(--space-8);
}

.risk-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    border-radius: var(--radius-full);
    background: linear-gradient(to right,
        var(--color-warning) 0%,
        var(--color-warning) 33.33%,
        var(--color-primary) 33.33%,
        var(--color-primary) 66.66%,
        var(--color-success) 66.66%,
        var(--color-success) 100%);
    outline: none;
    cursor: pointer;
}

.risk-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-surface);
    border: 3px solid var(--color-primary);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}

.risk-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.risk-slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-surface);
    border: 3px solid var(--color-primary);
    cursor: pointer;
    box-shadow: var(--shadow-md);
}

.risk-labels {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-12);
    padding: 0 var(--space-12);
}

.risk-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-base);
    cursor: pointer;
}

.risk-label.active {
    color: var(--color-primary);
    background: rgba(33, 139, 143, 0.1);
    font-weight: var(--font-weight-semibold);
    transform: translateY(-2px);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-8) var(--space-16);
    border-radius: var(--radius-base);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    text-decoration: none;
    white-space: nowrap;
}

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

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

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

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

.btn--lg {
    padding: var(--space-10) var(--space-20);
    font-size: var(--font-size-lg);
    border-radius: var(--radius-md);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-controls {
    display: flex;
    gap: var(--space-16);
    justify-content: center;
    margin-top: var(--space-32);
    flex-wrap: wrap;
}

/* Legal Disclaimer Notice */
.disclaimer-notice {
    text-align: center;
    margin-top: var(--space-16);
    padding: var(--space-12);
    background: rgba(var(--color-info-rgb), 0.05);
    border-radius: var(--radius-base);
    border: 1px solid rgba(var(--color-info-rgb), 0.1);
}

.disclaimer-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

.terms-link {
    color: var(--color-primary);
    text-decoration: underline;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

.terms-link:hover {
    color: var(--color-primary-hover);
}

/* Legal Disclaimer Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
    transition: opacity var(--transition-normal);
}

.modal-content {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    max-width: 800px;
    max-height: 80vh;
    width: 90%;
    box-shadow: var(--shadow-lg);
    position: relative;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.modal:not(.hidden) .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: var(--space-20);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    color: var(--color-text-secondary);
    padding: var(--space-4);
    border-radius: var(--radius-base);
    transition: background-color var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-secondary);
}

.modal-body {
    padding: var(--space-20);
    max-height: 60vh;
    overflow-y: auto;
}

.modal-footer {
    padding: var(--space-20);
    border-top: 1px solid var(--color-border);
    display: flex;
    gap: var(--space-12);
    justify-content: flex-end;
}

.disclaimer-content {
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: var(--color-text);
}

.disclaimer-content h3 {
    color: var(--color-primary);
    margin-top: var(--space-20);
    margin-bottom: var(--space-12);
}

.disclaimer-content ul {
    margin: var(--space-12) 0;
    padding-left: var(--space-20);
}

.disclaimer-content li {
    margin-bottom: var(--space-6);
}

.disclaimer-content strong {
    color: var(--color-text);
    font-weight: var(--font-weight-semibold);
}

/* Donation Section Styles */
.donation-section {
    margin: var(--space-32) 0;
    padding: var(--space-24);
    background: linear-gradient(135deg, rgba(33, 243, 50, 0.87) 0%, rgba(59, 130, 246, 0.1) 100%);
    border-radius: var(--radius-lg);
    border: 2px solid rgba(var(--color-success-rgb), 0.2);
}

.donation-card {
    background: var(--color-surface);
    border: none;
    box-shadow: var(--shadow-lg);
}

.value-highlight {
    text-align: center;
    margin-bottom: var(--space-24);
    padding: var(--space-16);
    background: var(--color-success-light);
    border-radius: var(--radius-md);
}

.value-highlight h3 {
    color: var(--color-success);
    font-size: var(--font-size-xl);
    margin: 0;
}

.benefit-amount {
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    font-size: var(--font-size-2xl);
}

.donation-message {
    text-align: center;
    margin-bottom: var(--space-24);
}

.donation-message p {
    font-size: var(--font-size-base);
    color: var(--color-text);
    line-height: 1.6;
}

.donation-amounts {
    display: flex;
    gap: var(--space-12);
    justify-content: center;
    margin-bottom: var(--space-20);
    flex-wrap: wrap;
}

.donation-btn {
    padding: var(--space-8) var(--space-16);
    border: 2px solid var(--color-border);
    background: var(--color-surface);
    border-radius: var(--radius-base);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

.donation-btn:hover {
    border-color: var(--color-primary);
    background: rgba(33, 139, 143, 0.1);
}

.donation-btn.selected {
    border-color: var(--color-primary);
    background: rgba(33, 139, 143, 0.15);
    color: var(--color-primary);
}

.donation-btn.featured {
    border-color: var(--color-primary);
    background: rgba(33, 139, 143, 0.1);
    position: relative;
}

.donation-btn.featured::after {
    content: "Most Popular";
    position: absolute;
    top: -22px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: white;
    padding: 2px 8px;
    font-size: var(--font-size-xs);
    border-radius: var(--radius-sm);
}

.donation-actions {
    display: flex;
    gap: var(--space-16);
    justify-content: center;
    margin-bottom: var(--space-20);
    flex-wrap: wrap;
}

.donation-primary {
/*     background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-success) 100%);
    border: none;
    position: relative;
    overflow: hidden;
    color: white; */
    box-shadow: 0px 1px 0px 0px #fff6af;
	background:linear-gradient(to bottom, #ffec64 5%, #ffab23 100%);
	background-color:#ffec64;
	border-radius:6px;
	border:1px solid #ffaa22;
	display:inline-block;
	cursor:pointer;
	color:#333333;
	font-family:Arial;
	font-size:15px;
	font-weight:bold;
	font-style:italic;
	padding:6px 24px;
	text-decoration:none;
	text-shadow:0px 1px 0px #ffee66;
}

.donation-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.donation-primary:hover::before {
    left: 100%;
}

.donation-skip {
    background: var(--color-secondary);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.donation-skip:hover {
    background: var(--color-secondary-hover);
}

.social-proof {
    text-align: center;
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-16);
}

.donation-stats {
    color: var(--color-success);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--space-8);
    font-size: var(--font-size-sm);
}

.impact-message {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin: 0;
}

/* Collapsed Donation Section Styles - NEW FEATURE */
.donation-collapsed {
    text-align: center;
    margin: var(--space-16) 0;
    padding: var(--space-12);
    background: rgba(34, 197, 94, 0.08);
    border-radius: var(--radius-md);
    border: 1px solid rgba(34, 197, 94, 0.2);
    transition: all var(--transition-normal);
}

.donation-collapsed-btn {
    width: 100%;
    padding: var(--space-12) var(--space-16);
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, rgba(59, 130, 246, 0.1) 100%);
    border: 2px solid rgba(34, 197, 94, 0.3);
    border-radius: var(--radius-base);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-base);
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-8);
    line-height: 1.4;
    font-family: var(--font-family);
}

.donation-collapsed-btn:hover {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.15) 0%, rgba(59, 130, 246, 0.15) 100%);
    border-color: var(--color-success);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.donation-collapsed-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.donation-collapsed-btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Smooth transition animations */
.donation-collapsed {
    animation: slideInCollapsed var(--transition-normal) ease-out;
}

@keyframes slideInCollapsed {
    from {
        opacity: 0;
        transform: translateY(-10px);
        max-height: 0;
    }
    to {
        opacity: 1;
        transform: translateY(0);
        max-height: 100px;
    }
}

/* Loading State */
.loading-state {
    text-align: center;
    padding: var(--space-32);
    background: rgba(245, 158, 11, 0.08);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-32);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-border);
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-16) auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Error Display */
.error-display {
    background: rgba(192, 21, 47, 0.1);
    border: 1px solid rgba(192, 21, 47, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--space-16);
    margin-bottom: var(--space-32);
    text-align: center;
}

.error-content h3 {
    color: var(--color-error);
    margin-bottom: var(--space-8);
}

.error-content p {
    color: var(--color-text);
    margin: 0;
}

/* Results Section */
.results-section {
    margin-bottom: var(--space-32);
}

/* Summary Cards */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-16);
    margin-bottom: var(--space-32);
}

.summary-card {
    text-align: center;
    background: rgba(34, 197, 94, 0.08);
    transition: transform var(--transition-normal);
}

.summary-card:hover {
    transform: translateY(-4px);
}

.summary-card h3 {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
    text-transform: uppercase;
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.5px;
}

.summary-value {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

/* Table Styles */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-base);
    border: 1px solid var(--color-border);
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.results-table th {
    background: rgba(239, 68, 68, 0.08);
    padding: var(--space-12) var(--space-8);
    text-align: left;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    border-bottom: 2px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.results-table td {
    padding: var(--space-10) var(--space-8);
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
}

.results-table tbody tr:nth-child(even) {
    background: rgba(147, 51, 234, 0.03);
}

.results-table tbody tr:hover {
    background: rgba(249, 115, 22, 0.05);
}

/* Toggle Styles */
.calculation-toggle,
.assumptions-toggle,
.about-toggle {
    width: 100%;
    background: none;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    color: var(--color-text);
    font-family: inherit;
    padding: 0;
    text-align: left;
}

.calculation-toggle:hover,
.assumptions-toggle:hover,
.about-toggle:hover {
    color: var(--color-primary);
}

.toggle-icon {
    font-size: var(--font-size-lg);
    transition: transform var(--transition-normal);
}

.toggle-icon.rotated {
    transform: rotate(180deg);
}

.calculation-content,
.assumptions-content,
.about-content {
    transition: all var(--transition-normal);
}

/* Calculation Explanation Styles */
.explanation-section {
    font-size: var(--font-size-base);
    line-height: 1.6;
}

.explanation-intro {
    background: rgba(59, 130, 246, 0.08);
    padding: var(--space-16);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-24);
}

.explanation-intro h3 {
    margin-bottom: var(--space-8);
    color: var(--color-primary);
}

.year-breakdown {
    margin-bottom: var(--space-32);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.year-breakdown h4 {
    background: rgba(245, 158, 11, 0.08);
    padding: var(--space-12) var(--space-16);
    margin: 0;
    color: var(--color-text);
    font-size: var(--font-size-lg);
}

.year-details {
    padding: var(--space-16);
}

.calculation-step {
    margin-bottom: var(--space-20);
    padding: var(--space-12);
    background: var(--color-surface);
    border-radius: var(--radius-base);
    border-left: 4px solid var(--color-primary);
}

.calculation-step h5 {
    margin-bottom: var(--space-8);
    color: var(--color-primary);
    font-size: var(--font-size-base);
}

.calculation-step ul {
    margin: 0;
    padding-left: var(--space-20);
}

.calculation-step li {
    margin-bottom: var(--space-6);
    line-height: 1.5;
}

.calculation-step strong {
    color: var(--color-text);
}

.risk-profile-explanation {
    background: rgba(34, 197, 94, 0.08);
    padding: var(--space-16);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-24);
}

.risk-profile-explanation h4 {
    margin-bottom: var(--space-12);
    color: var(--color-primary);
}

.explanation-footer {
    background: rgba(234, 131, 97, 0.1);
    border: 1px solid rgba(234, 131, 97, 0.2);
    border-radius: var(--radius-md);
    padding: var(--space-16);
}

.important-note h5 {
    margin-bottom: var(--space-8);
    color: var(--color-warning);
}

.important-note ul {
    margin: 0;
    padding-left: var(--space-20);
}

.important-note li {
    margin-bottom: var(--space-6);
    font-size: var(--font-size-sm);
}

/* Strategy Comparison */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-32);
}

.comparison-column {
    text-align: center;
}

.comparison-column h3 {
    margin-bottom: var(--space-16);
    padding: var(--space-12);
    border-radius: var(--radius-base);
    background: rgba(236, 72, 153, 0.08);
}

.comparison-metrics {
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
}

.metric-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-8) var(--space-12);
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

.metric-label {
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
}

.metric-value {
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
}

/* Assumptions */
.assumptions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-12);
}

.assumption-item {
    padding: var(--space-12);
    background: rgba(6, 182, 212, 0.08);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--color-primary);
}

.assumption-item strong {
    color: var(--color-text);
    display: block;
    margin-bottom: var(--space-4);
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.positive {
    color: var(--color-success) !important;
}

.negative {
    color: var(--color-error) !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-8);
    }

    .header {
        padding: var(--space-16) 0;
    }

    .header-top {
        position: static;
        margin-bottom: var(--space-16);
    }

    .header h1 {
        font-size: var(--font-size-3xl);
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .form-controls {
        flex-direction: column;
    }

    .btn--lg {
        width: 100%;
    }

    .summary-cards {
        grid-template-columns: 1fr;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
        gap: var(--space-16);
    }

    .results-table {
        font-size: var(--font-size-xs);
    }

    .results-table th,
    .results-table td {
        padding: var(--space-6) var(--space-4);
    }

    .summary-value {
        font-size: var(--font-size-2xl);
    }

    .assumptions-grid {
        grid-template-columns: 1fr;
    }

    .risk-labels {
        flex-direction: column;
        gap: var(--space-4);
        align-items: center;
    }

    .tooltip[data-tooltip]::before {
        max-width: 200px;
        left: 0;
        transform: none;
    }

    .tooltip[data-tooltip]::after {
        left: 20px;
        transform: none;
    }

    /* Modal responsive */
    .modal-content {
        width: 95%;
        max-height: 90vh;
    }

    .modal-footer {
        flex-direction: column;
    }

    /* Donation section mobile */
    .donation-amounts {
        flex-direction: column;
        align-items: center;
    }

    .donation-btn {
        width: 200px;
    }

    .donation-actions {
        flex-direction: column;
    }

    .donation-primary,
    .donation-skip {
        width: 100%;
    }

    /* Mobile responsive for collapsed button */
    .donation-collapsed {
        margin: var(--space-12) 0;
        padding: var(--space-8);
    }

    .donation-collapsed-btn {
        font-size: var(--font-size-sm);
        padding: var(--space-10) var(--space-12);
        gap: var(--space-6);
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: var(--font-size-2xl);
    }

    .header p {
        font-size: var(--font-size-base);
    }

    .results-table th,
    .results-table td {
        padding: var(--space-4);
    }

    .metric-item {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }

    .calculation-step {
        padding: var(--space-8);
    }

    .year-details {
        padding: var(--space-8);
    }

    .explanation-intro {
        padding: var(--space-12);
    }

    .modal-content {
        width: 100%;
        max-height: 95vh;
        border-radius: 0;
    }

    .donation-collapsed-btn {
        font-size: var(--font-size-xs);
        padding: var(--space-8) var(--space-10);
        gap: var(--space-4);
        line-height: 1.3;
    }
}

/* Focus and accessibility */
.form-control:focus,
.btn:focus,
.assumptions-toggle:focus,
.calculation-toggle:focus,
.about-toggle:focus,
.risk-slider:focus,
.donation-btn:focus,
.modal-close:focus,
.terms-link:focus,
.contact-btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Animation for collapsible content */
.calculation-content:not(.hidden) {
    animation: slideIn var(--transition-normal);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Dark mode support for collapsed section */
@media (prefers-color-scheme: dark) {
    .donation-collapsed {
        background: rgba(34, 197, 94, 0.12);
        border-color: rgba(34, 197, 94, 0.25);
    }

    .donation-collapsed-btn {
        background: linear-gradient(135deg, rgba(34, 197, 94, 0.15) 0%, rgba(59, 130, 246, 0.15) 100%);
        border-color: rgba(34, 197, 94, 0.4);
        color: var(--color-text);
    }

    .donation-collapsed-btn:hover {
        background: linear-gradient(135deg, rgba(34, 197, 94, 0.2) 0%, rgba(59, 130, 246, 0.2) 100%);
        border-color: var(--color-success);
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-border: #000;
        --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    }

    .donation-collapsed-btn {
        border-width: 3px;
        font-weight: var(--font-weight-bold);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .donation-collapsed {
        animation: none;
    }

    .donation-collapsed-btn {
        transition: none;
    }

    .donation-collapsed-btn:hover {
        transform: none;
    }
}