/*
 * DigiDoc 响应式样式 v2.0
 */

/* ─── 平板 (≤1024px) ─── */
@media (max-width: 1024px) {
    .dd-layout {
        grid-template-columns: 1fr;
    }
    .dd-doc-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .dd-user-layout {
        flex-direction: column;
    }
    .dd-user-sidebar {
        width: 100%;
    }
    .dd-user-nav {
        display: flex;
        overflow-x: auto;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
    }
    .dd-user-nav a {
        flex-shrink: 0;
        border-bottom: none;
        border-right: 1px solid var(--dd-border-light);
        padding: 10px 16px;
    }
}

/* ─── 手机 (≤768px) ─── */
@media (max-width: 768px) {
    body { padding-top: 56px; }
    .dd-header-inner { height: 56px; gap: 8px; }

    .dd-nav {
        display: none;
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        background: var(--dd-bg-white);
        border-bottom: 1px solid var(--dd-border);
        padding: 8px 16px;
        max-height: calc(100vh - 56px);
        overflow-y: auto;
        z-index: 100;
    }
    .dd-nav.active { display: block; }
    .dd-nav-list { flex-direction: column; width: 100%; }
    .dd-nav-list > li { width: 100%; }
    .dd-nav-list > li > a { padding: 10px 12px; border-radius: 6px; }

    .dd-nav-list .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding-left: 16px;
    }

    .dd-mobile-toggle { display: flex; }

    .dd-header-actions { gap: 4px; }

    .dd-doc-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .dd-doc-title { font-size: 1.2rem; }
    .dd-doc-header { padding: 16px; }
    .dd-doc-buy-box { padding: 20px; }
    .dd-price-area { flex-direction: column; align-items: flex-start; }
    .dd-buy-actions { width: 100%; }
    .dd-buy-actions .dd-btn { flex: 1; }
    .dd-entry { padding: 20px; }

    .dd-container { padding: 0 16px; }

    .dd-footer-bottom { flex-direction: column; text-align: center; }

    .dd-auth-box { padding: 28px 24px; }

    .dd-search-form input[type="search"] { font-size: 0.85rem; }
}

/* ─── 小屏手机 (≤480px) ─── */
@media (max-width: 480px) {
    .dd-doc-grid {
        grid-template-columns: 1fr;
    }
    .dd-user-content { padding: 20px 16px; }
    .dd-price-amount { font-size: 1.4rem; }
    .dd-buy-actions { flex-direction: column; }
    .dd-buy-actions .dd-btn { width: 100%; }
}

/* ─── iOS Safari 刘海屏补偿 ─── */
@supports (padding-top: env(safe-area-inset-top)) {
    .dd-header-inner { padding-top: env(safe-area-inset-top); height: calc(60px + env(safe-area-inset-top)); }
    @media (max-width: 768px) {
        .dd-header-inner { height: calc(56px + env(safe-area-inset-top)); }
        body { padding-top: calc(56px + env(safe-area-inset-top)); }
    }
}