/* Base CSS - Variables and basic styling */
:root {
    --primary-bg-color: #f0f0f0;
    --container-bg-color: white;
    --text-color: #333;
    --accent-color: #8a2be2;
    --shadow-color: rgba(0,0,0,0.1);
    --max-width: 600px;
    --border-radius: 10px;
    --output-bg: #f9f9f9;
    --output-border: #e0e0e0;
    --input-border: #ddd;
}

[data-theme="dark"] {
    --primary-bg-color: #1a1a1a;
    --container-bg-color: #2d2d2d;
    --text-color: #e0e0e0;
    --accent-color: #bb86fc;
    --shadow-color: rgba(0,0,0,0.3);
    --output-bg: #363636;
    --output-border: #404040;
    --input-border: #404040;
}

body {
    font-family: Arial, sans-serif;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 20px;
    text-align: center;
    background-color: var(--primary-bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    background-color: var(--container-bg-color);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px var(--shadow-color);
}

/* Accessibility */
.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;
}

/* Footer Styles */
.footer {
    text-align: center;
    padding: 20px 0;
    margin-top: 30px;
}

.footer-link {
    color: var(--text-color);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--accent-color);
}

.footer-separator {
    margin: 0 10px;
    color: var(--text-color);
    font-size: 14px;
}