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

body {
    margin: 0;
    background-color: var(--color-bg);
    color: var(--color-text);
    overflow-x: hidden;
    font-family: var(--font-body);
    line-height: 1.6;
}

/* ── Navigation ── */

#Header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem clamp(1.5rem, 5vw, 4rem);
}

.site-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-heading);
    letter-spacing: -0.01em;
}

.nav-links {
    display: flex;
    gap: clamp(1.25rem, 3vw, 2.5rem);
}

.nav-link {
    font-size: 0.875rem;
    color: var(--color-text-subtle);
    cursor: pointer;
    transition: color 0.2s;
    text-decoration: none;
}

.nav-link:hover {
    color: var(--color-heading-secondary);
}

/* ── Hero / Welcome Message ── */

#Hero {
    max-width: 1100px;
    margin: 0 auto;
    padding: clamp(4rem, 10vw, 8rem) clamp(1.5rem, 5vw, 4rem) clamp(4rem, 8vw, 6rem);
}

#WelcomeMessage {
    font-size: clamp(1.25rem, 2.2vw, 1.75rem);
    max-width: 720px;
    min-height: clamp(12rem, 28vw, 20rem);
    line-height: 1.7;
    color: var(--color-accent);
    font-family: var(--font-mono);
}

/* ── Section Titles ── */

.section-title {
    font-size: clamp(1.3rem, 2.2vw, 1.75rem);
    font-weight: 700;
    color: var(--color-heading);
    margin: 0 0 clamp(1.5rem, 3vw, 2.5rem);
    letter-spacing: -0.02em;
}

/* ── Demos ── */

#DemosBox {
    max-width: 1100px;
    margin: clamp(4rem, 8vw, 8rem) auto;
    padding: 0 clamp(1.5rem, 5vw, 4rem);
}

#buttonWrapper {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(200px, 100%), 1fr));
    gap: 0.75rem;
}

.demoButton {
    padding: 0.875rem 1.25rem;
    text-align: center;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 0.875rem;
    font-family: inherit;
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.demoButton:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-border-hover);
    color: var(--color-heading-secondary);
}

#MoreFiller {
    cursor: default;
    opacity: 0.3;
}

#MoreFiller:hover {
    background: var(--color-surface);
    border-color: var(--color-border);
    color: var(--color-text);
}

/* ── Mobile ── */

@media (max-width: 600px) {
    #Header {
        padding: 1.25rem 1.25rem;
    }

    .site-name {
        font-size: 0.95rem;
    }

    .nav-link {
        font-size: 0.8rem;
    }
}