:root {
    --bg-color: #f8f9fa;
    --text-color: #333;
    --container-bg: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--container-bg);
    border-radius: 15px;
    padding: 30px;
    box-shadow: var(--shadow);
}

header {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 15px;
    border: 3px solid #fff;
    box-shadow: var(--shadow);
}

h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 10px;
}

p {
    font-size: 14px;
    color: #666;
}

main {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.link-button {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    background-color: white;
    border-radius: 10px;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid var(--btn-color);
    box-shadow: var(--shadow);
}

.link-button:hover {
    background-color: var(--btn-color);
    color: white;
    transform: translateY(-2px);
}

.link-button:hover .link-icon {
    filter: brightness(0) invert(1);
}

.link-icon {
    width: 24px;
    height: 24px;
    margin-right: 15px;
    transition: all 0.3s ease;
}

footer {
    text-align: center;
    margin-top: 30px;
    font-size: 12px;
    color: #999;
}

@media (max-width: 480px) {
    .container {
        padding: 20px;
    }

    .link-button {
        padding: 12px 15px;
    }
}