/* --- Nav Home Page --- */
.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 16px 16px;
}

/* Search row */
.nav-search-row {
    display: flex;
    gap: 8px;
    align-items: center;
}
.nav-search-row .search-input {
    flex: 1;
    min-width: 0;
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    font-size: 14px;
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.nav-search-row .search-input:focus {
    border-color: var(--color-focus);
    box-shadow: 0 0 0 2px var(--color-focus-ring);
}

/* View switcher */
.nav-view-switcher {
    position: relative;
    flex-shrink: 0;
}
.nav-view-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-bg-card);
    color: var(--color-gray-500);
    cursor: pointer;
    font-size: 14px;
    transition: border-color 0.15s ease, color 0.15s ease;
}
.nav-view-btn:hover {
    border-color: var(--color-gray-300);
    color: var(--color-gray-700);
}
.nav-view-btn:focus-visible {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
}
.nav-view-menu {
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    min-width: 130px;
    z-index: 50;
    display: none;
    padding: 4px;
}
.nav-view-menu.open {
    display: block;
}
.nav-view-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    border-radius: var(--radius-md);
    font-size: 12px;
    font-weight: 500;
    color: var(--color-gray-600);
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
    white-space: nowrap;
}
.nav-view-option:hover {
    background: var(--color-bg-hover);
    color: var(--color-gray-800);
}
.nav-view-option.active {
    background: var(--color-primary-light);
    color: var(--color-primary);
}
.nav-view-option i {
    width: 14px;
    text-align: center;
    font-size: 12px;
}

/* Group tags bar */
.nav-group-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 8px;
    align-items: center;
}
.nav-group-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    background: var(--color-bg-card);
    color: var(--color-gray-500);
    border: 1px solid var(--color-gray-200);
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
    user-select: none;
    white-space: nowrap;
}
.nav-group-tag:hover {
    border-color: var(--color-gray-300);
    color: var(--color-gray-600);
}
.nav-group-tag.active {
    font-weight: 600;
}

/* Section (group) */
.nav-section {
    margin-bottom: 24px;
}
.nav-section-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 0;
    cursor: pointer;
    user-select: none;
}
.nav-section-icon {
    color: var(--color-primary);
    font-size: 14px;
}
.nav-section-chevron {
    width: 16px;
    height: 16px;
    color: var(--color-gray-400);
    transition: transform 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}
.nav-section.collapsed .nav-section-chevron {
    transform: rotate(-90deg);
}
.nav-section-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-gray-800);
    flex: 1;
}
.nav-section-count {
    font-size: 11px;
    color: var(--color-gray-400);
}

/* Section body (collapsible) */
.nav-section-body {
    overflow: hidden;
    transition: max-height 0.25s ease;
}
.nav-section.collapsed .nav-section-body {
    max-height: 0 !important;
}

/* ========== DEFAULT VIEW (current card layout) ========== */
.nav-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 12px;
    padding-bottom: 8px;
}
.nav-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 14px;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.nav-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.08);
}
.nav-card-pinned {
    border-left: 3px solid var(--color-primary);
}
.nav-card-link {
    text-decoration: none;
    display: block;
}
.nav-card-head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}
.nav-card-favicon {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    flex-shrink: 0;
}
.nav-card-favicon-fallback {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
    background: var(--color-gray-300);
}
.nav-card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-gray-800);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
    min-width: 0;
}
.nav-card:hover .nav-card-title {
    color: var(--color-primary);
}
.nav-card-desc {
    font-size: 12px;
    color: var(--color-gray-500);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 6px;
}
.nav-card-labels {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}
.tag-badge-more {
    cursor: default;
    opacity: 0.7;
}

/* ========== LIST VIEW (Flex layout, similar to bookmarks page) ========== */
.nav-container.view-list .nav-card-grid {
    display: flex;
    flex-direction: column;
    gap: 0;
}
.nav-container.view-list .nav-card {
    padding: 8px 12px;
    border: none;
    border-bottom: 1px solid var(--color-gray-100);
    border-radius: 0;
    background: var(--color-bg-card);
    cursor: pointer;
    transition: background-color 0.1s ease;
}
.nav-container.view-list .nav-card:hover {
    background: var(--color-bg-hover);
    box-shadow: none;
}
.nav-container.view-list .nav-card-pinned {
    border-left: none;
}
.nav-container.view-list .nav-card-link {
    display: block;
    text-decoration: none;
}
.nav-container.view-list .nav-card-body {
    flex: 1;
    min-width: 0;
}
.nav-container.view-list .nav-card-head {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 0;
}
.nav-container.view-list .nav-card-favicon,
.nav-container.view-list .nav-card-favicon-fallback {
    width: 16px;
    height: 16px;
    border-radius: 3px;
    flex-shrink: 0;
}
.nav-container.view-list .nav-card-title {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    min-width: 0;
}
.nav-container.view-list .nav-card-second {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 2px;
    padding-left: 22px;
}
.nav-container.view-list .nav-card-desc {
    color: var(--color-gray-500);
    font-size: 12px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
    flex: 1;
    margin-bottom: 0;
}
.nav-container.view-list .nav-card-labels {
    display: flex;
    flex-wrap: nowrap;
    gap: 2px;
    align-items: center;
    flex-shrink: 0;
    margin-bottom: 0;
}
.nav-container.view-list .nav-section-header {
    padding: 8px 12px;
    background: var(--color-bg);
    border-left: 3px solid var(--color-primary);
    border-radius: 0;
    margin-bottom: 0;
}
.nav-container.view-list .nav-section-title {
    font-size: 13px;
}
.nav-container.view-list .nav-pinned-section {
    background: transparent;
    padding: 0;
    border-radius: 0;
}
.nav-container.view-list .nav-pinned-section .nav-section-header {
    border-bottom: none;
    margin-bottom: 0;
    background: var(--color-primary-light);
    border-left: 3px solid var(--color-primary);
}

/* ========== COMPACT VIEW (Compact Tile) ========== */
.nav-container.view-compact .nav-card-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 8px;
}
.nav-container.view-compact .nav-card {
    padding: 10px;
    border-radius: var(--radius-lg);
}
.nav-container.view-compact .nav-card:hover {
    border-left: 2px solid var(--color-primary);
}
.nav-container.view-compact .nav-card-pinned {
    border-left: 2px solid var(--color-primary);
}
.nav-container.view-compact .nav-card-head {
    margin-bottom: 2px;
    gap: 6px;
}
.nav-container.view-compact .nav-card-favicon,
.nav-container.view-compact .nav-card-favicon-fallback {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    font-size: 12px;
}
.nav-container.view-compact .nav-card-title {
    font-size: 13px;
    -webkit-line-clamp: 2;
}
.nav-container.view-compact .nav-card-desc {
    -webkit-line-clamp: 2;
    margin-bottom: 0;
    font-size: 11px;
}
.nav-container.view-compact .nav-card-labels {
    display: none;
}
.nav-container.view-compact .nav-section-header {
    padding: 6px 0 6px 10px;
    border-left: 3px solid var(--color-primary);
    margin-bottom: 6px;
}
.nav-container.view-compact .nav-section-icon {
    display: none;
}
.nav-container.view-compact .nav-section-title {
    font-size: 14px;
}
.nav-container.view-compact .nav-pinned-section {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-bg-card));
    padding: 12px;
}
.nav-container.view-compact .nav-pinned-section .nav-section-header {
    border-left: none;
    padding-left: 0;
}

/* Manage link */
.nav-manage-link {
    font-size: 12px;
    color: var(--color-primary);
    text-decoration: none;
    white-space: nowrap;
}
.nav-manage-link:hover {
    text-decoration: underline;
}

/* Pinned section */
.nav-pinned-section {
    background: var(--color-primary-light);
    border-radius: var(--radius-xl);
    padding: 16px;
    margin-bottom: 24px;
}
.nav-pinned-section .nav-section-header {
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-primary-border);
    margin-bottom: 12px;
    cursor: default;
}

/* Responsive */
@media (max-width: 640px) {
    .nav-card-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 8px;
    }
    .nav-card {
        padding: 10px;
    }
    .nav-card-title {
        font-size: 13px;
    }
    .nav-pinned-section {
        padding: 12px;
    }
    /* Compact view on mobile */
    .nav-container.view-compact .nav-card-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }
    /* List view on mobile: allow wrapping */
    .nav-container.view-list .nav-card-second {
        flex-wrap: wrap;
    }
    .nav-container.view-list .nav-card-desc {
        -webkit-line-clamp: 2;
        white-space: normal;
    }
    .nav-container.view-list .nav-card-labels {
        flex-wrap: wrap;
    }
    .nav-container.view-list .nav-card-favicon,
    .nav-container.view-list .nav-card-favicon-fallback {
        width: 20px;
        height: 20px;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .nav-section-chevron,
    .nav-section-body,
    .nav-card,
    .nav-group-tag,
    .nav-view-btn,
    .nav-view-option {
        transition: none;
    }
}

/* ========== Skeleton Loading ========== */
.nav-skeleton-section {
    margin-bottom: 24px;
}
.nav-skeleton-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 0;
}
.nav-skeleton-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 14px;
}
.nav-skeleton-head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}
.nav-skeleton-favicon {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    flex-shrink: 0;
}
.nav-skeleton-title {
    height: 14px;
    border-radius: 4px;
    width: 50%;
}
.nav-skeleton-desc {
    height: 12px;
    border-radius: 4px;
    width: 60%;
}

/* Empty state */
.nav-empty {
    text-align: center;
    padding: 64px 16px;
    color: var(--color-gray-500);
}
.nav-empty-title {
    font-size: 16px;
    margin-bottom: 8px;
}
.nav-empty-link {
    font-size: 13px;
    color: var(--color-primary);
    text-decoration: none;
}
.nav-empty-link:hover {
    text-decoration: underline;
}