/* Reusable Components */

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 1.25rem;
    width: min(1180px, calc(100% - 32px));
    min-height: 76px;
    margin: 16px auto 0;
    padding: 0.75rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: rgba(8, 10, 18, 0.76);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), background var(--transition-base), border-color var(--transition-base);
}

body.light .site-header {
    background: rgba(255, 255, 255, 0.82);
    border-color: var(--line-light);
}

.site-header.is-hidden {
    transform: translateY(calc(-100% - 24px));
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    color: inherit;
    text-decoration: none;
    font-weight: 800;
    white-space: nowrap;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    background: var(--accent);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.24), 0 12px 28px rgba(79, 149, 244, 0.28);
}

.brand-mark img {
    width: 32px;
    height: 32px;
}

.brand-name {
    font-family: "Sora", "Inter", sans-serif;
    font-size: 1.02rem;
}

.site-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.2rem;
}

.site-nav a,
.nav-download {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 0.9rem;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.94rem;
    font-weight: 700;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.site-nav a:hover,
.site-nav a:focus-visible,
.nav-download:hover,
.nav-download:focus-visible {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-1px);
}

body.light .site-nav a,
body.light .nav-download {
    color: var(--text-muted-light);
}

body.light .site-nav a:hover,
body.light .site-nav a:focus-visible,
body.light .nav-download:hover,
body.light .nav-download:focus-visible {
    color: var(--text-primary-light);
    background: rgba(34, 102, 214, 0.08);
}

.header-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
}

.nav-download {
    color: white;
    background: var(--accent);
}

.nav-download:hover,
.nav-download:focus-visible {
    color: white;
    background: var(--accent-strong);
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 42px;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 0 0.8rem;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    font: inherit;
    font-size: 0.92rem;
    font-weight: 700;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
}

body.light .theme-toggle {
    background: rgba(255, 255, 255, 0.66);
    color: var(--text-primary-light);
    border-color: var(--line-light);
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
    border-color: var(--line-strong);
    transform: translateY(-1px);
}

.theme-toggle svg {
    width: 18px;
    height: 18px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    min-height: 48px;
    padding: 0 1.35rem;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 800;
    text-decoration: none;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover,
.btn-primary:focus-visible {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border-color: var(--line);
}

body.light .btn-secondary {
    background: rgba(255, 255, 255, 0.82);
    color: var(--text-primary-light);
}

.feature-card,
.arena-steps article {
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface);
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

body.light .feature-card,
body.light .arena-steps article {
    background: var(--surface-light);
    border-color: var(--line-light);
}

.feature-card:hover,
.arena-steps article:hover {
    transform: translateY(-4px);
    border-color: rgba(79, 149, 244, 0.62);
    box-shadow: var(--shadow-md);
}

.feature-card {
    padding: 1.5rem;
}

.feature-kicker {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 28px;
    margin-bottom: 1.25rem;
    border: 1px solid rgba(79, 149, 244, 0.42);
    border-radius: var(--radius-sm);
    color: var(--accent-mint);
    font-size: 0.82rem;
    font-weight: 900;
}

body.light .feature-kicker {
    color: var(--accent-strong);
}

.feature-card h3 {
    font-family: "Sora", "Inter", sans-serif;
    font-size: 1.24rem;
    font-weight: 700;
    margin: 0 0 0.75rem;
    color: inherit;
}

.feature-card p,
.arena-steps p {
    color: var(--text-muted);
    line-height: 1.7;
    margin: 0;
}

body.light .feature-card p,
body.light .arena-steps p {
    color: var(--text-muted-light);
}

footer {
    padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
    text-align: center;
    color: var(--text-muted);
    border-top: 1px solid var(--line);
    background: rgba(8, 10, 18, 0.2);
}

body.light footer {
    color: var(--text-muted-light);
    border-color: var(--line-light);
    background: rgba(255, 255, 255, 0.32);
}

footer a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

footer a:hover,
footer a:focus-visible {
    color: var(--accent);
}

.footer-links {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.footer-links a {
    padding: 0.45rem 0.65rem;
    border-radius: var(--radius-sm);
}

.footer-socials {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    min-width: 7.25rem;
    min-height: 38px;
    padding: 0 0.85rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 800;
}

body.light .social-link {
    background: rgba(255, 255, 255, 0.68);
    color: var(--text-muted-light);
    border-color: var(--line-light);
}

.social-link:hover,
.social-link:focus-visible {
    border-color: rgba(79, 149, 244, 0.52);
    background: rgba(79, 149, 244, 0.12);
}

.social-icon {
    width: 0.95rem;
    height: 0.95rem;
    flex: 0 0 auto;
}

@media (max-width: 920px) {
    .site-header {
        grid-template-columns: 1fr auto;
    }

    .site-nav {
        order: 3;
        grid-column: 1 / -1;
        justify-content: flex-start;
        overflow-x: auto;
        padding-top: 0.25rem;
        scrollbar-width: none;
    }

    .site-nav::-webkit-scrollbar {
        display: none;
    }
}

@media (max-width: 640px) {
    .site-header {
        width: calc(100% - 20px);
        margin-top: 10px;
        gap: 0.75rem;
    }

    .brand-name,
    .theme-toggle span,
    .nav-download {
        display: none;
    }

    .site-nav a {
        min-height: 38px;
        padding: 0 0.72rem;
        font-size: 0.88rem;
    }

    .footer-socials {
        gap: 0.5rem;
    }

    .social-link {
        min-width: 0;
    }
}

@media (max-width: 360px) {
    .site-header {
        padding: 0.5rem;
        gap: 0.35rem;
    }

    .brand-mark {
        width: 36px;
        height: 36px;
    }

    .brand-mark img {
        width: 27px;
        height: 27px;
    }

    .theme-toggle {
        min-height: 36px;
        padding: 0 0.55rem;
    }

    .site-nav {
        gap: 0.05rem;
    }

    .site-nav a {
        min-height: 34px;
        padding: 0 0.44rem;
        font-size: 0.8rem;
    }
}