/* =========================================
   25 - Footer
   Deep Cream Grey (Stone 200)
   Soft / Warm / Not Dark
   Cupcats 2026 Stable + Premium Gentle
   - Social: use <img> icons (safer with Live Server)
========================================= */

.s-footer {
    background: var(--stone-200);
    color: var(--stone-800);
    padding: var(--space-5xl) 0 var(--space-lg);
}

/* Grid */
.s-footer__grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1.3fr;
    gap: var(--space-3xl);
    align-items: start;
}

/* Brand */
.s-footer__logo {
    display: inline-flex;
    gap: 10px;
    align-items: baseline;
    color: inherit;
    text-decoration: none;
}

.s-footer__mark {
    font-weight: 650;
    font-size: 14px;
    letter-spacing: 0.02em;
}

.s-footer__name {
    font-weight: 600;
    font-size: 13px;
    color: var(--stone-700);
    letter-spacing: 0.02em;
    opacity: 0.78;
}

.s-footer__desc {
    margin-top: var(--space-sm);
    font-size: 13px;
    line-height: 1.85;
    color: var(--stone-600);
    max-width: 40ch;
}

/* controlled lines (no random wrap on desktop) */
.s-footer__line {
    display: block;
    white-space: nowrap;
}

.s-footer__line+.s-footer__line {
    margin-top: 4px;
}

.s-footer__note {
    opacity: 0.85;
}

.s-footer__tag {
    margin-top: 10px;
    font-size: 0.92em;
    letter-spacing: 0.06em;
    opacity: 0.7;
}

/* Nav */
.s-footer__navGrid {
    display: grid;
    gap: var(--space-xl);
}

@media (min-width: 720px) {
    .s-footer__navGrid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-3xl);
        align-items: start;
    }
}

.s-footer__title {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin: 0 0 var(--space-xs);
    color: var(--stone-800);
}

.s-footer__links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0;
}

.s-footer__link {
    font-size: 13px;
    line-height: 1.85;
    color: var(--stone-600);
    text-decoration: none;
    opacity: 0.86;
    display: inline-flex;
    width: fit-content;
    transform: translateY(0);
    transition: color 0.18s ease, transform 0.18s ease, opacity 0.18s ease;
}

.s-footer__link:hover {
    color: var(--stone-800);
    opacity: 1;
    transform: translateY(-1px);
}

/* Contact */
.s-footer__contactList {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--space-sm);
    display: grid;
    gap: 0;
}

.s-footer__contactItem {
    display: inline-flex;
    align-items: center;
    font-size: 13px;
    line-height: 1.85;
    color: var(--stone-600);
    text-decoration: none;
    opacity: 0.88;
    width: fit-content;
    transform: translateY(0);
    transition: color 0.18s ease, transform 0.18s ease, opacity 0.18s ease;
}

.s-footer__contactItem:hover {
    color: var(--stone-800);
    opacity: 1;
    transform: translateY(-1px);
}

/* Social (Premium Gentle Glow) */
.s-footer__social {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-top: var(--space-sm);
    flex-wrap: nowrap;
    overflow: visible;
}

.s-footer__socialLink {
    width: 38px;
    height: 38px;
    border-radius: 999px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    /* 更「柔霧＋微光澤」一點，但不科技、不浮誇 */
    background:
        radial-gradient(120% 120% at 30% 20%, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.58) 55%, rgba(255, 255, 255, 0.48) 100%);

    border: 1px solid rgba(0, 0, 0, 0.04);
    box-shadow:
        0 6px 16px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);

    opacity: 0.96;
    flex: 0 0 auto;
    transition: filter .22s ease, transform .22s ease, box-shadow .22s ease, opacity .22s ease, border-color .22s ease;
}

.s-footer__socialImg {
    width: 18px;
    height: 18px;
    display: block;
    object-fit: contain;
    opacity: 0.74;
    filter: brightness(0.96);
    transition: opacity .22s ease, filter .22s ease, transform .22s ease;
}

.s-footer__socialLink:hover {
    /* “微亮”而已，不要浮起太多 */
    filter: brightness(1.05);
    transform: translateY(-1px);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.06);
    border-color: rgba(0, 0, 0, 0.06);
}

.s-footer__socialLink:hover .s-footer__socialImg {
    opacity: 1;
    filter: brightness(1.12);
}

.s-footer__socialLink:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.06);
}

.s-footer__socialLink:focus-visible {
    outline: 2px solid rgba(0, 0, 0, 0.18);
    outline-offset: 3px;
}

/* Bottom */
.s-footer__bottom {
    margin-top: var(--space-2xl);
    padding-top: var(--space-md);
    border-top: 1px solid var(--stone-300);

    display: flex;
    gap: var(--space-md);
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.s-footer__copy,
.s-footer__powered {
    margin: 0;
    font-size: 12px;
    line-height: 1.7;
    color: var(--stone-600);
    letter-spacing: 0.02em;
    opacity: 0.78;
}

/* =========================================
   Footer service links (SEO + UX)
   ========================================= */

.s-footer__desc {
    margin-top: 0.5rem;
}

.s-footer__line {
    margin: 0.15rem 0;
}

/* 服務連結 */
.s-footer__serviceLink {
    display: inline-block;
    color: inherit;
    text-decoration: none;
    position: relative;
    transition:
        transform 0.22s ease,
        color 0.22s ease,
        opacity 0.22s ease;
    will-change: transform;
}

/* hover 效果：微微浮動 + 顏色變化 */
.s-footer__serviceLink:hover,
.s-footer__serviceLink:focus-visible {
    transform: translateY(-1px);
    color: var(--stone-800);
    opacity: 1;
}

/* 可及性 focus */
.s-footer__serviceLink:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 3px;
    border-radius: 3px;
}

/* 分隔點 */
.s-footer__dot {
    opacity: 0.55;
    margin: 0 0.25em;
}

/* Responsive */
@media (max-width: 900px) {
    .s-footer {
        padding: var(--space-4xl) 0 var(--space-lg);
    }

    .s-footer__grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .s-footer__desc {
        max-width: 52ch;
    }

    .s-footer__bottom {
        margin-top: var(--space-xl);
    }

    /* mobile: allow line wrap if too tight */
    .s-footer__line {
        white-space: normal;
    }
}