*, *::before, *::after {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    user-select: none;
    height: 100%;
}

:root {
    --color-text-primary: #ffffff;
    --color-accent-red: #ff0033;
    --color-accent-blue: #00ffff;
    --border-radius-button: 40px;
}

body {
    background-color: #000;
    color: var(--color-text-primary);
    font-family: 'Inter', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    z-index: 0;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("fondo.png");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    filter: grayscale(0.4);
    z-index: -1;
}

.container {
    width: 100%;
    max-width: 500px;
    text-align: center;
    padding: 50px 20px 0;
    flex-grow: 1;
    position: relative;
    z-index: 1;
}

.profile-image {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 50px;
    border: 3px solid var(--color-text-primary);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.links-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin-bottom: 40px;
}

.link-button {
    text-decoration: none;
    color: #ffffff;
    background: transparent;
    padding: 18px 25px;
    border: 2px solid rgba(255, 255, 255, 0.7);
    border-radius: var(--border-radius-button);
    font-weight: 700;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(20px);
    transition: all 0.2s ease-in-out;
}

.link-button i {
    color: #ffffff;
}

.link-text {
    flex-grow: 1;
    text-align: center;
    margin-right: 30px;
}

.link-button:hover {
    background-color: rgba(255, 0, 51, 0.85);
    transform: translateY(-2px);
}

.contribute-section {
    margin-top: 40px;
}

.contribute-button {
    border-color: var(--color-accent-blue);
}

.contribute-button:hover {
    background-color: rgba(46, 204, 204, 0.85);
}

.secondary-logo {
    display: block;
    margin: 25px auto 0;
    max-width: 250px;
    height: auto;
    opacity: 0.9;
    filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.2));
}

footer {
    width: 100%;
    text-align: center;
    padding: 20px 0;
    position: relative;
    z-index: 1;
}

.footer-text {
    font-size: 0.8em;
    color: rgba(255, 255, 255, 0.6);
}

@media (max-width: 600px) {
    body::before {
        background-attachment: scroll;
    }

    .container {
        padding-top: 30px;
    }

    .profile-image {
        margin-bottom: 35px;
    }

    .link-button {
        padding: 15px 20px;
        font-size: 0.9em;
        min-height: 56px;
    }

    .secondary-logo {
        max-width: 120px;
        margin-top: 20px;
    }

    footer {
        padding: 15px 0;
    }
}