/* --- Basic Setup & Fonts --- */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    margin: 0;
    box-sizing: border-box;
    color: var(--text-color-primary); /* Apply base text color */
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

/* --- Typography --- */
h1 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-color-primary);
    text-align: center;
    margin-top: 0;
    transition: color 0.3s ease;
}

p.subtitle {
    text-align: center;
    color: var(--text-color-secondary);
    margin-bottom: 1.5rem;
    transition: color 0.3s ease;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--label-color);
    margin-bottom: 0.25rem;
    transition: color 0.3s ease;
}