/* ═══ Social Cards — 社交平台名片卡 ═══ */

.social-grid {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    gap: var(--spacing-md);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    padding: 0 var(--spacing-md);
}

/* ── 卡片本体 ── */
.social-card {
    position: relative;
    flex: 1 1 0;
    min-width: 36px;
    max-width: 72px;
    aspect-ratio: 1;
    background: var(--bg-card);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.social-card:hover {
    border-color: var(--accent-dim);
    box-shadow: 0 6px 20px rgba(212, 188, 148, 0.1);
}

/* ── 正面：Logo ── */
.social-card__front {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.2s ease;
}

.social-card:hover .social-card__front {
    opacity: 0.1;
}

.social-card__logo {
    width: 50%;
    height: 50%;
    object-fit: contain;
    filter: brightness(0.9);
}

.social-card__placeholder {
    font-size: 1rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    overflow: hidden;
    white-space: nowrap;
}

/* ── 悬浮弹出层 ── */
.social-card__popup {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 0;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.social-card:hover .social-card__popup {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
    pointer-events: auto;
}

/* ── QR 码图 ── */
.social-card__qr {
    max-width: 120px;
    max-height: 160px;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 4px;
    background: var(--bg-qr);
    padding: 3px;
}

/* ── 访问链接 ── */
.social-card__link {
    font-size: 0.75rem;
    color: var(--accent-dim);
    text-decoration: none;
    border-bottom: 1px dashed var(--accent-dim);
    padding-bottom: 1px;
    transition: color 0.2s, border-color 0.2s;
    white-space: nowrap;
}

.social-card__link:hover {
    color: var(--accent);
    border-color: var(--accent);
}

/* ── 页脚紧凑版 — 正方形+弹窗向上 ── */
.footer__social .social-grid {
    margin-bottom: 2px;
    gap: 2px;
    max-width: 100%;
    padding: 0 12px;
}
.footer__social .social-card {
    flex: 1 1 0;
    min-width: 26px;
    max-width: 40px;
    aspect-ratio: 1 / 1;
    min-height: 0;
    width: auto;
    height: auto;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
}
.footer__social .social-card:hover,
.footer__social .social-card:focus-within {
    border-color: var(--accent-dim);
    box-shadow: 0 -2px 12px rgba(0,0,0,0.3);
}
.footer__social .social-card__front {
    opacity: 1 !important;
}
.footer__social .social-card:hover .social-card__front {
    opacity: 1 !important;
}
/* 弹窗向上弹出 */
.footer__social .social-card__popup {
    display: flex;
    top: auto;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translate(-50%, 8px) scale(0.8);
}
.footer__social .social-card:hover .social-card__popup,
.footer__social .social-card:focus-within .social-card__popup {
    opacity: 1;
    transform: translate(-50%, 0) scale(1);
    pointer-events: auto;
}
.footer__social .social-card__logo {
    width: 55%;
    height: 55%;
    object-fit: contain;
    filter: brightness(0.85);
}
.footer__social .social-card__qr {
    max-width: 200px;
    max-height: 260px;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 4px;
    background: var(--bg-qr);
    padding: 3px;
}
.footer__social .social-card__link {
    font-size: 0.65rem;
}
.footer__social .social-card__placeholder {
    font-size: 0.55rem;
    letter-spacing: 0;
}

/* ── 仅 URL 平台：名称 + 按钮 ── */
.social-card__url-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    text-align: center;
    min-width: 80px;
}

.social-card__url-name {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
}

.social-card__url-btn {
    display: inline-block;
    padding: 4px 14px;
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--bg-primary);
    background: var(--accent-dim);
    border-radius: 4px;
    text-decoration: none;
    transition: background 0.2s, transform 0.15s;
    white-space: nowrap;
}

.social-card__url-btn:hover {
    background: var(--accent);
    transform: scale(1.05);
}

/* ── 页脚紧凑版 URL 适配 ── */
.footer__social .social-card__url-name {
    font-size: 0.6rem;
}

.footer__social .social-card__url-btn {
    font-size: 0.55rem;
    padding: 3px 8px;
}

/* ── 响应式 ── */
@media (max-width: 480px) {
    .social-grid {
        gap: 6px;
        padding: 0 8px;
    }
    .social-card {
        min-width: 28px;
    }

    .social-card__qr {
        max-width: 100px;
        max-height: 140px;
    }
}