/**
 * component-footer.css - 页脚、移动端侧边栏遮罩
 */

/* ==============================
   页脚
   ============================== */
.site-footer {
    border-top: 1px solid var(--border-color);
    padding: 32px 0;
    margin-top: auto;
    transition: border-color 0.3s ease;
}

.footer-inner {
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 24px;
    margin-bottom: 16px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-copy {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.theme-credit {
    margin-left: 12px;
}

/* ==============================
   移动端侧边栏
   ============================== */
.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 150;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-sidebar {
    position: fixed;
    top: 0;
    right: -280px;
    bottom: 0;
    width: 280px;
    background: var(--bg-secondary);
    z-index: 160;
    transition: right 0.3s ease;
    overflow-y: auto;
}

.mobile-sidebar.active {
    right: 0;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 700;
}

.mobile-nav {
    padding: 16px;
}

.mobile-nav a {
    display: block;
    padding: 12px 16px;
    color: var(--text-primary);
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: background 0.2s ease;
}

.mobile-nav a:hover {
    background: var(--bg-primary);
}

/* ==============================
   响应式
   ============================== */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: 260px;
    }
}

@media (max-width: 768px) {
    :root {
        --gap: 16px;
    }

    .main-nav {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .main-wrapper {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        position: static;
    }

    .content-single {
        padding: 0;
    }

    .article-title {
        font-size: 1.5rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .article-nav {
        flex-direction: column;
    }

    .post-cover img {
        height: 160px;
    }
}

@media (max-width: 480px) {
    .header-inner {
        gap: 16px;
    }

    .logo a {
        font-size: 1rem;
    }

    .post-content {
        padding: 16px;
    }

    .post-title {
        font-size: 1.1rem;
    }

    .post-excerpt {
        font-size: 0.9rem;
        -webkit-line-clamp: 2;
    }

    .footer-links {
        flex-direction: column;
        gap: 12px;
    }

    /* 移动端下载卡片 */
    .payment-methods {
        flex-direction: column;
    }

    .unlock-form {
        flex-direction: column;
    }

    .download-card {
        padding: 16px;
    }
}