/* Reset CSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Variables for light and dark themes */
:root {
    --background-color: #ffffff;
    --text-color: #000000;
    --highlight-color: #000000;
    --link-color: #555555;
    --link-hover-color: #000000;
    --bio-color: #333333;
    --profile-shadow: rgba(0, 0, 0, 0.1);
}

body.dark-mode {
    --background-color: #000000;
    --text-color: #ffffff;
    --highlight-color: #ffffff;
    --link-color: #aaaaaa;
    --link-hover-color: #ffffff;
    --bio-color: #dddddd;
    --profile-shadow: rgba(255, 255, 255, 0.1);
}

body {
    font-family: 'Ubuntu', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
    padding: 20px;
    position: relative;
}

/* Dark Mode Toggle */
.theme-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    cursor: pointer;
    outline: none;
    color: var(--text-color);
    transition: color 0.3s;
}

.theme-toggle i {
    width: 24px;
    height: 24px;
}

.theme-toggle:hover {
    color: var(--link-hover-color);
}

/* Container */
.container {
    text-align: center;
    max-width: 600px;
    width: 100%;
}

/* Profile Photo */
.profile-photo {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 4px 15px var(--profile-shadow);
    margin: 0 auto;
}

/* Bio */
.bio {
    margin-top: 30px;
    font-size: 20px;
    color: var(--bio-color);
    line-height: 1.6;
    padding: 0 20px;
}

.highlight {
    color: var(--highlight-color);
    font-weight: 500;
}

/* Social Links */
.social-links {
    margin-top: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
}

.social-links a {
    text-decoration: none;
    color: var(--link-color);
    transition: color 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.social-links a:hover {
    color: var(--link-hover-color);
}

.social-links i {
    width: 24px;
    height: 24px;
}

.social-links span {
    margin-top: 5px;
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .profile-photo {
        width: 150px;
        height: 150px;
    }

    .bio {
        font-size: 18px;
        padding: 0 15px;
    }

    .social-links {
        gap: 20px;
    }

    .social-links i {
        width: 20px;
        height: 20px;
    }

    .social-links span {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .profile-photo {
        width: 120px;
        height: 120px;
    }

    .bio {
        font-size: 16px;
        padding: 0 10px;
    }

    .social-links {
        gap: 15px;
    }

    .social-links i {
        width: 18px;
        height: 18px;
    }

    .social-links span {
        font-size: 12px;
    }
}