body {
    background-color: lightyellow;
    font-family: 'Courier New', Courier, monospace;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.main-container {
    background-color: #f4e4bc;
    background-image: url('https://www.transparenttextures.com/patterns/paper.png');
    width: 100%;
    max-width: 600px;
    border: 3px solid #4a3b2a;
    box-shadow: 10px 10px 0px rgba(0,0,0,0.5); 
    padding: 2rem;
    text-align: center;
    position: relative;
}

header h1 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.subtitle {
    font-style: italic;
    color: #666;
    margin-bottom: 1.5rem;
    border-bottom: 2px dashed #666;
    padding-bottom: 10px;
}

.shrine-box {
    border: 2px inset #dcdcdc;
    background: #000;
    padding: 10px;
    margin-bottom: 20px;
}

/* Aquí estaba el error. Le decimos al contenedor que centre lo que tiene adentro */
.tux-container {
    display: flex;
    justify-content: center;
    width: 100%; 
}

/* Y aquí obligamos A LA IMAGEN a respetar los límites */
.tux-container img {
    width: 100%;
    max-width: 250px; /* Aquí controlas el tamaño final */
    height: auto;
}

.caption {
    color: #0f0; 
    margin-top: 5px;
    font-size: 0.9rem;
    font-weight: bold;
}

.skills-box {
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid #999;
    padding: 15px;
    margin-bottom: 20px;
}

.highlight {
    background-color: yellow;
    color: black;
    padding: 0 4px;
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 15px;
}

.skill-item {
    background: #fff;
    border: 2px solid #000;
    padding: 5px 10px;
    font-weight: bold;
    box-shadow: 3px 3px 0 #000;
    transition: transform 0.2s;
    cursor: default;
}

.skill-item:hover {
    transform: translate(-2px, -2px);
    box-shadow: 5px 5px 0 #000;
}

.enter-btn {
    display: inline-block;
    background-color: #8b4513;
    color: #fff;
    text-decoration: none;
    padding: 10px 20px;
    font-weight: bold;
    border: 2px solid #3e1e05;
    box-shadow: inset 2px 2px 5px rgba(255,255,255,0.3), 
                inset -2px -2px 5px rgba(0,0,0,0.3);
}

.enter-btn:hover {
    background-color: #a0522d;
}