:root {
    --background-color: #f8f9fa;
    --font-color: #212529;
    --button-bg: #212529; /* Renamed for clarity */
    --button-text: #ffffff;  /* Renamed for clarity */
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--font-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

.card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
}

.profile-picture {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1rem;
}

.location {
    font-size: 1.125rem; /* 18px */
    font-weight: 500;
    margin: 1rem 0;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    
    /* --- SWAPPED STYLES START HERE --- */
    
    /* Default state: Black background, white text */
    color: var(--button-text);
    background-color: var(--button-bg);
    border: 1.5px solid var(--button-bg);
    
    /* --- SWAPPED STYLES END HERE --- */
    
    border-radius: 50px;
    padding: 12px 24px;
    margin-top: 1rem;
    min-width: 280px;
    font-size: 1rem;
    font-weight: 500;
    transition: background-color 0.2s ease-in-out, color 0.2s ease-in-out;
}

.button:hover {
    /* Hover state: Transparent background, black text */
    background-color: transparent;
    color: var(--font-color);
}

.icon {
    font-size: 1.5rem;
    margin-right: 12px;
}