/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #000000;
    --secondary-color: #ffffff;
    --accent-color: #2d2d2d;
    --text-color: #000000;
    --light-text: #4d4d4d;
    --border-color: #e0e0e0;
    --success-color: #28a745;
    --error-color: #dc3545;
    --card-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --spacing: 1rem;
}

body {
    font-family: 'Afacad', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fafafa;
    padding: 0;
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem var(--spacing);
}

/* Typography */
h1, h2, h3 {
    margin-bottom: 1rem;
    color: var(--text-color);
    font-weight: 600;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

h2 {
    font-size: 1.8rem;
    margin-top: 2rem;
    padding-bottom: 0.5rem;
    font-weight: 600;
}

h3 {
    font-size: 1.3rem;
    color: var(--text-color);
    font-weight: 500;
}

.tax-year {
    color: var(--text-color);
    font-size: 1.4rem;
    margin: 0.5rem 0 2rem;
    text-align: center;
}

/* Header and Footer */
header {
    text-align: center;
    margin-bottom: 2rem;
}

footer {
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
    background-color: var(--secondary-color);
    color: var(--light-text);
    font-size: 0.9rem;
}

.legal-disclaimer {
    font-size: 0.8rem;
    max-width: 800px;
    margin: 1rem auto 0;
    line-height: 1.4;
    color: var(--light-text);
}

/* Calculator Layout */
.calculator {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .calculator {
        grid-template-columns: 1fr 1fr;
    }
}

/* Input Section */
.input-section {
    background-color: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--card-shadow);
}

.input-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

input[type="number"] {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    font-family: 'Afacad', sans-serif;
    transition: all 0.3s;
}

input[type="number"]:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(45, 45, 45, 0.1);
}

button {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    font-family: 'Afacad', sans-serif;
    cursor: pointer;
    transition: all 0.3s;
}

#calculate-button {
    background-color: var(--text-color);
    color: white;
    margin-right: 0.5rem;
}

#calculate-button:hover {
    background-color: #333;
    transform: translateY(-2px);
}

#reset-button {
    background-color: #f1f1f1;
    color: var(--text-color);
}

#reset-button:hover {
    background-color: #e0e0e0;
}

/* Tooltips */
.tooltip {
    position: relative;
    cursor: help;
    color: var(--light-text);
    font-size: 0.9rem;
}

.tooltip::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 120%;
    left: 50%;
    transform: translateX(-50%);
    background-color: #333;
    color: white;
    text-align: center;
    border-radius: 8px;
    padding: 0.5rem;
    width: 220px;
    font-weight: normal;
    font-size: 0.8rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    z-index: 10;
}

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

/* Results Section */
.results-section {
    background-color: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--card-shadow);
}

.results-section h2 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.results-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.result-card {
    background-color: var(--secondary-color);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
}

.result-card h3 {
    margin-bottom: 1rem;
    text-align: center;
}

.result-card {
    background-color: var(--secondary-color);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
}

.result-item {
    display: flex;
    justify-content: space-between;
    margin: 0.5rem 0;
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 1.05rem;
}

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

.highlight-total, .highlight-income {
    font-size: 1.2rem;
    font-weight: 600;
    padding: 0.8rem 0;
}

.highlight-total span:last-child {
    color: var(--text-color);
    font-weight: 700;
}

.highlight-income span:last-child {
    color: var(--success-color);
    font-weight: 700;
}

#refund {
    color: var(--success-color);
    font-weight: 600;
}

#balance-owing {
    color: var(--error-color);
    font-weight: 600;
}



/* Tax bracket breakdown */
.tax-brackets {
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.bracket {
    padding: 0.3rem 0;
    display: flex;
    justify-content: space-between;
}

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

/* Collapsible Sections */
.collapsible-section {
    margin-top: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background-color: white;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.collapsible-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    cursor: pointer;
    background-color: #e6f0ff;
    transition: background-color 0.3s;
}

.collapsible-header:hover {
    background-color: #d9e7ff;
}

.collapsible-header h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
}

.toggle-icon {
    font-size: 0.9rem;
    transition: transform 0.3s;
}

.collapsible-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.collapsible-section.active .collapsible-content {
    max-height: 2000px;
    transition: max-height 0.6s ease-in;
}

.collapsible-section.active .toggle-icon {
    transform: rotate(180deg);
}

/* Breakdown Grid */
.breakdown-grid {
    padding: 1.5rem;
}

.breakdown-grid h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: 1rem 0 0.5rem;
    color: var(--text-color);
    grid-column: 1 / -1;
}

.breakdown-row {
    display: flex;
    justify-content: space-between;
    padding: 0.7rem 0;
    border-bottom: 1px solid var(--border-color);
}

.breakdown-row:last-of-type {
    border-bottom: none;
}

.breakdown-row span:first-child {
    color: var(--light-text);
    font-weight: 400;
}

.breakdown-row span:last-child {
    font-weight: 500;
}

.highlight-row {
    background-color: #f5f5f5;
    padding: 0.8rem;
    margin: 0.5rem -0.8rem;
    border-radius: 8px;
}

.highlight-row span {
    font-weight: 600 !important;
    color: var(--text-color) !important;
}

/* Disclaimer */
.disclaimer {
    margin-top: 2rem;
    padding: 1rem;
    background-color: #fafafa;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 0.9rem;
    color: var(--light-text);
    text-align: center;
}

/* Hide refund/owing containers initially */
#refund-container, #owing-container {
    display: none;
}

/* Tax brackets section */
.tax-brackets-container {
    margin-top: 40px;
    padding: 20px;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.tax-brackets-container h2 {
    text-align: center;
    margin-bottom: 20px;
    font-weight: 600;
}

.tax-brackets {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: space-between;
}

.bracket-table {
    flex: 1;
    min-width: 300px;
}

.bracket-table h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    font-weight: 500;
}

.bracket-table table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 15px;
}

.bracket-table th, .bracket-table td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid #e9ecef;
}

.bracket-table th {
    background-color: #f8f9fa;
    font-weight: 500;
}

.bracket-table tr:last-child td {
    border-bottom: none;
}

.bracket-notes {
    margin-top: 20px;
    font-size: 0.9rem;
    color: #6c757d;
    background-color: #f8f9fa;
    padding: 12px;
    border-radius: 8px;
}

/* Tax Breakdown Chart Styling */
#tax-breakdown-chart-container {
    padding: 1.5rem;
    margin-top: 1rem;
    text-align: center;
}

#tax-breakdown-chart-container h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: #333;
    font-size: 1.2rem;
}