/* CSS Variables */
:root {
    --color-bg: #1a1a1a;
    --color-text: #fff;
    --color-text-muted: #888;
    --color-card: #2a2a2a;
    --color-card-hover: #3a3a3a;
}

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

body {
    font-family: "LINE Seed JP", sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    font-weight: 400;
    line-height: 1.5;
}

/* Container */
.container {
    max-width: 480px;
    margin: 0 auto;
    padding: 40px;
    padding-top: 10vh
}

/* Profile Section */
.profile {
    text-align: center;
    margin-bottom: 32px;
}

.profile-icon {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 16px;
}

.profile-name {
    font-size: 1.6rem;
    font-weight: 700;
}

.profile-bio {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* Links Section */
.links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.link-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 8px;
    background-color: var(--color-card);
    border-radius: 8px;
    text-decoration: none;
    color: var(--color-text);
    aspect-ratio: 1;
    transition: background-color 0.15s ease;
}

.link-item:hover {
    background-color: var(--color-card-hover);
}

.link-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    filter: brightness(0) invert(1);
}

.link-name {
    font-size: 0.75rem;
    text-align: center;
}

/* Footer */
.footer {
    margin-top: 40px;
    text-align: center;
}

.warning {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* Responsive */
@media (max-width: 480px) {
    .container {
        padding: 24px 16px;
    }

    .profile-icon {
        width: 100px;
        height: 100px;
    }

    .profile-name {
        font-size: 1.25rem;
    }

    .link-item {
        padding: 12px 16px;
    }
}