/* CSS Variables for consistent theming - Light Theme */
:root {
    /* Colors */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-accent1: #60a5fa;
    --color-accent2: #93c5fd;
    --color-accent3: #bfdbfe;
    --color-bg-dark: #ffffff;
    --color-bg-card: #ffffff;
    --color-bg-input: #f3f4f6;
    --color-border: #e5e7eb;
    --color-text: #111827;
    --color-text-muted: #6b7280;
    --color-text-light: #374151;
    --color-error: #ef4444;
    --color-blue: #2563eb;
    
    /* Spacing - unchanged */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border radius - unchanged */
    --radius: 0.5rem;
    
    /* Transitions - unchanged */
    --transition: 0.2s ease;
    
    /* Max width - unchanged */
    --max-width: 1200px;
}

/* Base styles */
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    overflow-x: hidden;
    box-sizing: border-box;
    color: var(--color-text);
    background-color: var(--color-bg-dark);
}

*, *:before, *:after {
    box-sizing: inherit;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: 100%;
}

.page-content {
    flex: 1 0 auto;
    width: 100%;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    overflow-x: hidden;
}

/* Typography */
.text-lg {
    font-size: 1.125rem;
}

.text-xl {
    font-size: 1.25rem;
}

.font-bold {
    font-weight: bold;
}

.muted-text {
    color: var(--color-text-muted);
}

.centered-text {
    text-align: center;
}

.text-white {
    color: white;
}

.text-right {
    text-align: right;
}

/* Navigation */
nav {
    background-color: white;
    padding: var(--spacing-md);
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-title {
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0;
    color: var(--color-text);
}

.site-subtitle {
    color: var(--color-text-muted);
    margin: var(--spacing-xs) 0 0 0;
}

#searchInput {
    padding: var(--spacing-sm);
    border-radius: var(--radius);
    background-color: var(--color-bg-input);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

/* Links */
.green-text {
    color: var(--color-primary);
    text-decoration: none;
}

.green-text:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

nav .green-text {
    color: var(--color-primary);
    text-decoration: none;
}

nav .green-text:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* Main content */
main {
    flex-grow: 1;
    padding: var(--spacing-md);
}

/* Category sections */
.category-section {
    margin-bottom: var(--spacing-xl);
}

.category-title, .section-title {
    font-weight: bold;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.category-title {
    font-size: 1.25rem;
}

.section-title {
    font-size: 1.125rem;
    font-weight: bold;
    margin: var(--spacing-lg) 0 var(--spacing-sm) 0;
    color: var(--color-primary);
    text-align: center;
}

/* Grids - consolidated */
.tools-grid, .ui-elements-grid, .overview-grid, .result-grid, .form-grid, .investment-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

@media (min-width: 640px) {
    .overview-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .tools-grid, .ui-elements-grid, .form-grid, .result-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .investment-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .tools-grid, .ui-elements-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .overview-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Cards and containers */
.card, .tool-card, .retirement-calculator-container, .investment-calculator-container, .alternative-inputs {
    background-color: var(--color-bg-card);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.tool-card {
    display: block;
    text-decoration: none;
    color: var(--color-text);
    transition: background-color var(--transition), transform var(--transition);
    overflow-wrap: break-word;
    word-break: break-word;
    cursor: pointer;
}

.tool-card:hover {
    background-color: white;
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.tool-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.tool-icon {
    color: var(--color-primary);
    font-size: 1.25rem;
    margin-right: var(--spacing-sm);
}

.tool-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
}

.tool-description {
    color: var(--color-text-muted);
    margin: 0;
}

/* Results styling */
.result-column, .results-container, .investment-inputs {
    background-color: var(--color-bg-card);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.result-row {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
}

.result-row:last-child {
    border-bottom: none;
}

.result-label {
    color: var(--color-text-light);
    font-weight: 500;
}

.result-value {
    color: var(--color-primary);
    font-weight: bold;
}

.result-title {
    color: var(--color-primary);
    font-weight: 600;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

/* Form Elements */
.form-input, .form-select, .form-textarea {
    background-color: var(--color-bg-input);
    color: var(--color-text);
    padding: var(--spacing-sm);
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-md);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

.form-checkbox {
    margin-right: var(--spacing-sm);
    background-color: var(--color-bg-input);
    border: 1px solid var(--color-border);
}

.form-label {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    display: block;
    font-weight: 500;
}

.form-range {
    width: 100%;
    margin-bottom: var(--spacing-md);
    accent-color: var(--color-primary);
}

/* Button Styles - consolidated */
.primary-button, .calculate-button, .add-period-button {
    background-color: var(--color-primary);
    color: white;
    font-weight: bold;
    padding: 0.75rem var(--spacing-md);
    width: 100%;
    border: none;
    border-radius: var(--radius);
    margin-bottom: var(--spacing-md);
    cursor: pointer;
    transition: background-color var(--transition);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.primary-button:hover, .calculate-button:hover, .add-period-button:hover {
    background-color: var(--color-primary-dark);
}

.calculate-button {
    display: block;
    margin: 0 auto var(--spacing-xl);
    padding: 0.75rem var(--spacing-xl);
}

.secondary-button {
    background-color: var(--color-bg-input);
    color: white;
    padding: 0.75rem var(--spacing-md);
    width: 100%;
    border: none;
    border-radius: var(--radius);
    margin-bottom: var(--spacing-md);
    cursor: pointer;
    transition: background-color var(--transition);
}

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

.disabled-button {
    background-color: var(--color-border);
    color: var(--color-text-muted);
    padding: var(--spacing-sm);
    width: 100%;
    border: none;
    border-radius: var(--radius);
    margin-bottom: var(--spacing-md);
    cursor: not-allowed;
}

.outline-button {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    padding: var(--spacing-sm);
    width: 100%;
    border-radius: var(--radius);
    margin-bottom: var(--spacing-md);
    cursor: pointer;
    transition: background-color var(--transition), color var(--transition);
}

.outline-button:hover {
    background-color: var(--color-primary);
    color: white;
}

.remove-period-button {
    background-color: var(--color-error);
    color: white;
    font-weight: 500;
    padding: 0.75rem var(--spacing-md);
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: background-color var(--transition);
}

.remove-period-button:hover {
    background-color: #b91c1c;
}

.link-button {
    background: none;
    border: none;
    color: var(--color-primary);
    cursor: pointer;
    padding: 0;
    font-size: 1rem;
    text-align: left;
}

.link-button:hover {
    text-decoration: underline;
    color: var(--color-primary-dark);
}

/* Layout Helpers */
.button-row {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.button-row-triple {
    gap: var(--spacing-sm);
}

.spacing {
    margin-bottom: var(--spacing-md);
}

.spacing-small {
    margin-bottom: var(--spacing-sm);
}

.flex-center {
    display: flex;
    align-items: center;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.center-button {
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-spacing {
    margin-right: var(--spacing-sm);
}

.icon-white {
    color: white;
    font-size: 1.25rem;
}

.hidden {
    display: none;
}

/* Table styles */
table, .full-width-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-md);
}

th, td {
    border-bottom: 1px solid var(--color-bg-input);
    padding: var(--spacing-sm);
    color: var(--color-text-light);
}

th {
    color: white;
    font-weight: 600;
}

/* Error messages */
.error-message {
    color: var(--color-error);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

/* Retirement/Investment Calculator specific styles */
.retirement-title, .investment-title {
    font-size: 1.875rem;
    font-weight: bold;
    margin-bottom: var(--spacing-xl);
    text-align: center;
    color: var(--color-primary);
}

/* Radio options */
.radio-options {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.radio-label {
    flex: 1;
    cursor: pointer;
    display: block;
}

.radio-input {
    display: none;
}

.radio-content {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: background-color var(--transition), border-color var(--transition);
}

.radio-input:checked + .radio-content {
    border-color: var(--color-primary);
    background-color: rgba(37, 99, 235, 0.05);
}

.radio-content:hover {
    background-color: var(--color-bg-input);
}

.radio-title {
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: #e5e7eb;
}

/* Footer */
footer {
    background-color: white;
    padding: var(--spacing-md);
    text-align: center;
    flex-shrink: 0;
    width: 100%;
    border-top: 1px solid var(--color-border);
}

.footer-text {
    color: var(--color-text-muted);
    margin: 0;
}

/* Misc */
img {
    max-width: 100%;
    height: auto;
}

/* Utility styles for investment calculator */
.highlight {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent1));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.investment-period {
    background-color: var(--color-bg-card);
    border-radius: var(--radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--color-border);
    transition: border-color 0.3s;
}

.investment-period:hover {
    border-color: var(--color-primary);
}

.period-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    align-items: flex-end;
}

@media (min-width: 768px) {
    .period-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.result-container {
    padding: var(--spacing-md);
    background-color: var(--color-bg-input);
    border-radius: var(--radius);
    color: var(--color-primary);
    font-size: 1.25rem;
    border: 1px solid var(--color-border);
}

/* Investment Calculator Specific */
.investment-inputs {
    background-color: var(--color-bg-card);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.investment-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

@media (max-width: 767px) {
    .investment-grid {
        grid-template-columns: 1fr;
    }
}

/* Make input fields more uniform */
.form-input, .form-select {
    height: 42px;
    padding: 0.5rem 0.75rem;
}

/* Center chart container */
.card {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Ensure chart container is properly sized */
#investmentChart {
    width: 100%;
    height: auto;
    aspect-ratio: 16/9;
    margin: 0 auto;
}

/* Improve summary section */
.form-grid {
    max-width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
}

.result-column {
    max-width: 500px;
    width: 100%;
    margin: 0 auto;
}

/* Make calculate button more prominent */
.calculate-button {
    max-width: 300px;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: bold;
    margin: var(--spacing-xl) auto;
}