/* ============================================
   Footer Component – Site footer with wave edge
   ============================================ */

/* Main footer wrapper */
.site-footer {
    position: relative;
    margin-top: 0;
    padding-top: var(--space-20);
    padding-bottom: var(--space-10);
    background: linear-gradient(to bottom, var(--color-paper), rgba(135, 189, 174, 0.15));
}

/* Torn paper wave along top edge */
.site-footer__wave {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 40px;
    transform: rotate(180deg);
    line-height: 0;
}

.site-footer__wave svg {
    display: block;
    width: 100%;
    height: 40px;
    fill: var(--color-paper);
}

/* Inner content container (limits to content width) */
.site-footer__inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-8);
    position: relative;
    z-index: 10;
}

/* Content grid */
.site-footer__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

.site-footer__brand {
    grid-column: 1 / -1;
    text-align: center;
}

.site-footer__brand-title {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-otto-dark);
    margin-bottom: var(--space-4);
}

.site-footer__brand-desc {
    font-family: var(--font-body);
    font-size: var(--text-lg);
    color: var(--color-ink);
    max-width: 36ch;
    line-height: 1.6;
    margin-inline: auto;
}

/* Navigation columns */
.site-footer__nav {
    text-align: center;
}

.site-footer__nav-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-otto-dark);
    margin-bottom: var(--space-4);
}

.site-footer__nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
}

.site-footer__nav-link {
    font-family: var(--font-body);
    font-size: var(--text-lg);
    color: var(--color-ink);
    transition: color var(--transition-base);
    text-decoration: none;
}

.site-footer__nav-link:hover {
    color: var(--color-otto-green);
    text-decoration: underline;
    text-decoration-style: wavy;
    text-underline-offset: 4px;
}

/* Copyright bar */
.site-footer__copyright {
    text-align: center;
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    color: var(--color-ink-40);
    border-top: 1px solid var(--color-ink-10);
    padding-top: var(--space-8);
    margin-bottom: var(--space-2);
}

.site-footer__credit {
    text-align: center;
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    color: var(--color-ink-40);
}

.site-footer__credit-link {
    color: var(--color-ink-40);
    text-decoration: underline;
    text-decoration-style: wavy;
    text-underline-offset: 3px;
    transition: color var(--transition-base);
}

.site-footer__credit-link:hover {
    color: var(--color-otto-green);
}

/* ---- Responsive: md breakpoint (768px) ---- */
@media (min-width: 768px) {
    .site-footer__grid {
        grid-template-columns: 2fr 1fr 1fr;
    }

    .site-footer__brand {
        grid-column: 1 / 2;
        text-align: left;
    }

    .site-footer__brand-desc {
        max-width: 36ch;
        margin-inline: 0;
    }

    .site-footer__nav {
        text-align: left;
    }

    .site-footer__nav-list {
        align-items: flex-start;
    }
}