/* --- CSS Variables for Easy Customization --- */
:root {
    --bg-color: #0f172a;       /* Dark slate background */
    --card-bg: #1e293b;        /* Slightly lighter slate for buttons */
    --text-main: #f8fafc;      /* Bright white for primary text */
    --text-muted: #94a3b8;     /* Soft gray for bio/footer */
    --accent-color: #38bdf8;   /* Sky blue hover border/glow effect */
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

/* --- Layout Container --- */
.container {
    width: 100%;
    max-width: 480px; /* Perfect width for mobile devices */
    text-align: center;
    padding: 40px 20px;
}

/* --- Profile Styles --- */
.profile {
    margin-bottom: 32px;
}

.avatar {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--accent-color);
    margin-bottom: 16px;
}

.profile h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.bio {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* --- Buttons Styles --- */
.links-container {
    display: flex;
    flex-direction: column;
    gap: 16px; /* Spacing between links */
    margin-bottom: 40px;
}

.link-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background-color: var(--card-bg);
    color: var(--text-main);
    text-decoration: none;
    padding: 16px 24px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    border: 1px solid transparent;
    transition: var(--transition);
    
    /* Subtle shadow for depth */
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
}

/* Hover & Focus Effects */
.link-btn:hover, .link-btn:focus {
    transform: translateY(-2px);
    border-color: var(--accent-color);
    box-shadow: 0 10px 15px -3px rgba(56, 189, 248, 0.2); /* Soft blue glow */
    outline: none;
}

/* --- Footer Styles --- */
.footer {
    font-size: 0.8rem;
    color: var(--text-muted);
}