:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --background-color: #ffffff;
    --text-color: #1e293b;
    --light-gray: #f1f5f9;
    --border-color: #e2e8f0;
}

/* Dark theme variables */
:root[data-theme='dark'] {
    --background-color: #121212;
    --text-color: #f8f8f2;
    --secondary-color: #9ca3af;
    --light-gray: #262626;
    --border-color: #3f3f3f;
}