:root {
    --radius: 0.625rem;
    --background: oklch(1 0 0);
    --foreground: oklch(0.145 0 0);
    --card: oklch(1 0 0);
    --card-foreground: oklch(0.145 0 0);
    --border: oklch(0.922 0 0);
    --input: oklch(0.922 0 0);
    --primary: oklch(0.21 0 0);
    --primary-foreground: oklch(0.985 0 0);
    --secondary: oklch(0.96 0 0);
    --secondary-foreground: oklch(0.21 0 0);
    --muted: oklch(0.96 0 0);
    --muted-foreground: oklch(0.55 0 0);
    --accent: oklch(0.94 0 0);
    --accent-foreground: oklch(0.21 0 0);
    --ring: oklch(0.55 0 0);
}

@media (prefers-color-scheme: dark) {
    :root {
        --background: oklch(0.12 0 0);
        --foreground: oklch(0.985 0 0);
        --card: oklch(0.15 0 0);
        --card-foreground: oklch(0.985 0 0);
        --border: oklch(0.25 0 0);
        --input: oklch(0.25 0 0);
        --primary: oklch(0.985 0 0);
        --primary-foreground: oklch(0.145 0 0);
        --secondary: oklch(0.22 0 0);
        --secondary-foreground: oklch(0.985 0 0);
        --muted: oklch(0.22 0 0);
        --muted-foreground: oklch(0.65 0 0);
        --accent: oklch(0.25 0 0);
        --accent-foreground: oklch(0.985 0 0);
        --ring: oklch(0.55 0 0);
    }
}

* {
    box-sizing: border-box;
    -ms-overflow-style: none;
    scrollbar-width: none;
}

*::-webkit-scrollbar {
    width: 0;
    height: 0;
}

html, body {
    height: 100%;
    margin: 0;
}

body {
    font-family: system-ui, Avenir, Helvetica, Arial, sans-serif;
    background-color: var(--background);
    background-image:
        radial-gradient(at 0% 0%, color-mix(in srgb, var(--foreground) 3%, transparent) 0px, transparent 50%),
        radial-gradient(at 100% 100%, color-mix(in srgb, var(--foreground) 2%, transparent) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--foreground);
    line-height: 1.5;
    font-weight: 400;
    font-synthesis: none;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

.skip-link {
    position: absolute;
    top: -100%;
    left: 8px;
    z-index: 999;
    padding: 8px 16px;
    background-color: var(--primary);
    color: var(--primary-foreground);
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    transition: top 0.15s;
}

.skip-link:focus {
    top: 8px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 2.25rem;
    padding: 0 0.75rem;
    border-radius: calc(var(--radius) - 4px);
    font-size: 0.875rem;
    font-weight: 500;
    transition: background-color 0.15s, color 0.15s, transform 0.1s;
    cursor: pointer;
    text-decoration: none;
    border: none;
    user-select: none;
    font-family: inherit;
}

.btn:active {
    transform: scale(0.98);
}

.btn.outline {
    background-color: transparent;
    border: 1px solid var(--input);
    color: var(--foreground);
}

.btn.outline:hover {
    background-color: var(--accent);
}

/* ── Header ── */

.header {
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 1px solid var(--border);
    background-color: color-mix(in srgb, var(--background) 70%, transparent);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    padding: 10px 16px;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 800px;
    margin: 0 auto;
}

.header-back {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: calc(var(--radius) - 2px);
    color: var(--foreground);
    transition: background-color 0.15s;
    flex-shrink: 0;
}

.header-back:hover {
    background-color: var(--accent);
}

.header-back svg {
    width: 20px;
    height: 20px;
}

.header-title {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.015em;
    margin: 0;
    flex: 1;
    min-width: 0;
}

.header-logo {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

@media (prefers-color-scheme: dark) {
    .header-logo {
        filter: invert(1);
    }
}

.header-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: var(--muted-foreground);
    text-decoration: none;
    transition: color 0.15s;
    flex-shrink: 0;
}

.header-link:hover {
    color: var(--foreground);
}

/* ── Main ── */

.main {
    flex: 1;
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    padding: 20px 16px;
}

/* ── Search Box ── */

.search-box {
    position: relative;
    margin-bottom: 16px;
}

.search-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.mode-select {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 2;
}

.mode-trigger {
    display: flex;
    align-items: center;
    gap: 2px;
    height: 100%;
    padding: 0 8px 0 12px;
    border-right: 1px solid var(--border);
    border-radius: var(--radius) 0 0 var(--radius);
    cursor: pointer;
    user-select: none;
    color: var(--foreground);
    font-size: 0.8125rem;
    font-weight: 500;
}

.mode-trigger:hover {
    background-color: var(--accent);
}

.mode-arrow {
    width: 12px;
    height: 12px;
    color: var(--muted-foreground);
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.mode-select.open .mode-arrow {
    transform: rotate(180deg);
}

.mode-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    min-width: 80px;
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) - 2px);
    box-shadow: 0 8px 24px -6px color-mix(in srgb, var(--foreground) 15%, transparent);
    padding: 4px;
    opacity: 0;
    transform: translateY(-4px) scale(0.98);
    pointer-events: none;
    transition: opacity 0.15s ease, transform 0.15s ease;
}

.mode-select.open .mode-menu {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.mode-option {
    padding: 6px 10px;
    font-size: 0.8125rem;
    border-radius: calc(var(--radius) - 4px);
    cursor: pointer;
    transition: background-color 0.1s;
    white-space: nowrap;
}

.mode-option:hover {
    background-color: var(--accent);
}

.mode-option.selected {
    background-color: var(--primary);
    color: var(--primary-foreground);
    font-weight: 500;
}

.search-input {
    width: 100%;
    height: 48px;
    padding: 0 40px 0 72px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--card);
    color: var(--foreground);
    font-size: 1rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.search-input:focus {
    border-color: var(--ring);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--ring) 15%, transparent);
}

.search-input::placeholder {
    color: var(--muted-foreground);
}

.search-kbd {
    position: absolute;
    right: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 5px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background-color: var(--muted);
    color: var(--muted-foreground);
    font-size: 0.75rem;
    font-family: inherit;
    pointer-events: none;
}

.search-clear {
    position: absolute;
    right: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: calc(var(--radius) - 2px);
    background: none;
    color: var(--muted-foreground);
    cursor: pointer;
    transition: background-color 0.15s, color 0.15s;
}

.search-clear:hover {
    background-color: var(--accent);
    color: var(--foreground);
}

.search-clear svg {
    width: 16px;
    height: 16px;
}

/* ── Suggest Dropdown ── */

.suggest-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    z-index: 50;
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 8px 24px -6px color-mix(in srgb, var(--foreground) 15%, transparent);
    padding: 4px;
    max-height: 360px;
    overflow-y: auto;
}

.suggest-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: calc(var(--radius) - 2px);
    cursor: pointer;
    transition: background-color 0.1s;
}

.suggest-item:hover,
.suggest-item.highlighted {
    background-color: var(--accent);
}

.suggest-icon {
    width: 16px;
    height: 16px;
    color: var(--muted-foreground);
    flex-shrink: 0;
}

.suggest-text {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.suggest-title {
    font-size: 0.875rem;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.suggest-desc {
    font-size: 0.75rem;
    color: var(--muted-foreground);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ── Filters ── */

.filters {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 16px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--card);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.filter-label {
    flex-shrink: 0;
    width: 56px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--muted-foreground);
    text-align: right;
}

.chip-group {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    flex: 1;
    min-width: 0;
}

.chip {
    display: inline-flex;
    align-items: center;
    height: 28px;
    padding: 0 10px;
    border: 1px solid var(--input);
    border-radius: 9999px;
    background-color: transparent;
    color: var(--muted-foreground);
    font-size: 0.75rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.15s;
    user-select: none;
}

.chip:hover {
    background-color: var(--accent);
    color: var(--accent-foreground);
}

.chip.active {
    background-color: var(--primary);
    color: var(--primary-foreground);
    border-color: var(--primary);
}

.ns-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border: 1px solid var(--input);
    border-radius: calc(var(--radius) - 2px);
    background: none;
    color: var(--muted-foreground);
    cursor: pointer;
    flex-shrink: 0;
    transition: background-color 0.15s, color 0.15s;
}

.ns-toggle:hover {
    background-color: var(--accent);
    color: var(--foreground);
}

.ns-toggle svg {
    width: 16px;
    height: 16px;
}

/* ── Result Meta ── */

.result-meta {
    font-size: 0.8125rem;
    color: var(--muted-foreground);
    margin-bottom: 12px;
    line-height: 1.6;
}

.suggestion-link {
    background: none;
    border: none;
    color: var(--foreground);
    font-weight: 500;
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.suggestion-link:hover {
    opacity: 0.8;
}

/* ── Results ── */

.results {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 200px;
}

@keyframes cardIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-card {
    display: flex;
    gap: 14px;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--card);
    color: var(--card-foreground);
    text-decoration: none;
    transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
    animation: cardIn 0.3s ease backwards;
}

.result-card:hover {
    border-color: color-mix(in srgb, var(--border) 40%, var(--foreground));
    transform: translateY(-1px);
    box-shadow: 0 4px 12px -4px color-mix(in srgb, var(--foreground) 10%, transparent);
}

.result-thumb {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    border-radius: calc(var(--radius) - 2px);
    overflow: hidden;
    background-color: var(--muted);
    cursor: pointer;
    transition: opacity 0.15s;
}

.result-thumb:hover {
    opacity: 0.85;
}

.result-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.result-body {
    flex: 1;
    min-width: 0;
}

.result-title {
    margin: 0;
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1.3;
    word-break: break-word;
    display: inline;
}

.result-title-row {
    display: flex;
    align-items: baseline;
    gap: 6px;
    flex-wrap: wrap;
}

.result-ns {
    display: inline-flex;
    align-items: center;
    height: 18px;
    padding: 0 6px;
    border-radius: 3px;
    background-color: var(--secondary);
    color: var(--secondary-foreground);
    font-size: 0.625rem;
    font-weight: 500;
    flex-shrink: 0;
}

.result-redirect {
    font-size: 0.6875rem;
    color: var(--muted-foreground);
    margin-top: 2px;
}

.result-redirect span {
    color: var(--foreground);
    font-weight: 500;
}

.result-title mark {
    background-color: color-mix(in srgb, #fbbf24 30%, transparent);
    color: inherit;
    border-radius: 2px;
    padding: 0 1px;
}

.result-section {
    display: inline-block;
    font-size: 0.6875rem;
    color: var(--muted-foreground);
    margin-top: 2px;
}

.result-snippet {
    margin: 6px 0 0;
    font-size: 0.8125rem;
    line-height: 1.6;
    color: var(--muted-foreground);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-break: break-word;
}

.result-snippet mark {
    background-color: color-mix(in srgb, #fbbf24 25%, transparent);
    color: inherit;
    border-radius: 2px;
    padding: 0 1px;
}

.result-meta-row {
    display: flex;
    gap: 12px;
    margin-top: 6px;
    font-size: 0.6875rem;
    color: var(--muted-foreground);
}

.result-cats {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 6px;
}

.cat-tag {
    display: inline-flex;
    align-items: center;
    height: 18px;
    padding: 0 6px;
    border-radius: 9999px;
    background-color: var(--muted);
    color: var(--muted-foreground);
    font-size: 0.5625rem;
    font-weight: 500;
    white-space: nowrap;
}

/* ── Skeleton ── */

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-line {
    height: 14px;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--muted) 25%, color-mix(in srgb, var(--muted) 60%, var(--background)) 50%, var(--muted) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

.skeleton-card {
    pointer-events: none;
}

.skeleton-card .result-title-row,
.skeleton-card .result-redirect,
.skeleton-card .result-section,
.skeleton-card .result-snippet,
.skeleton-card .result-meta-row,
.skeleton-card .result-cats {
    visibility: hidden;
}

/* ── Placeholder & Empty ── */

.placeholder,
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 16px;
    text-align: center;
}

.placeholder-icon,
.empty-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
    color: var(--muted-foreground);
    opacity: 0.3;
}

.placeholder-icon svg,
.empty-icon svg {
    width: 48px;
    height: 48px;
}

.placeholder p,
.empty-state p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--muted-foreground);
}

.placeholder-hint,
.empty-hint {
    margin-top: 6px !important;
    font-size: 0.75rem !important;
}

.placeholder-hint kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 4px;
    border: 1px solid var(--border);
    border-radius: 3px;
    background-color: var(--muted);
    font-size: 0.6875rem;
    font-family: inherit;
    margin: 0 1px;
}

/* ── Pagination ── */

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-top: 20px;
}

.page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 8px;
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) - 2px);
    background-color: var(--card);
    color: var(--foreground);
    font-size: 0.8125rem;
    font-family: inherit;
    cursor: pointer;
    transition: background-color 0.15s, border-color 0.15s;
}

.page-btn:hover:not([disabled]) {
    background-color: var(--accent);
}

.page-btn.active {
    background-color: var(--primary);
    color: var(--primary-foreground);
    border-color: var(--primary);
}

.page-btn[disabled] {
    opacity: 0.4;
    cursor: not-allowed;
}

.page-btn svg {
    width: 16px;
    height: 16px;
}

.page-ellipsis {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    font-size: 0.8125rem;
    color: var(--muted-foreground);
}

/* ── Footer ── */

.footer {
    padding: 12px 16px 20px;
    text-align: center;
    font-size: 0.75rem;
    color: var(--muted-foreground);
}

.footer p {
    margin: 0;
}

.footer a {
    color: var(--foreground);
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* ── Responsive ── */

@media (max-width: 600px) {
    .header-content {
        gap: 8px;
    }

    .header-title {
        font-size: 0.875rem;
    }

    .header-link {
        font-size: 0.6875rem;
    }

    .search-input {
        height: 44px;
        font-size: 0.9375rem;
        padding-left: 64px;
    }

    .mode-trigger {
        font-size: 0.75rem;
        padding: 0 6px 0 8px;
    }

    .mode-menu {
        min-width: 64px;
    }

    .mode-option {
        padding: 5px 8px;
        font-size: 0.75rem;
    }

    .filters {
        padding: 10px;
    }

    .filter-group {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }

    .filter-label {
        width: auto;
        text-align: left;
        font-size: 0.6875rem;
    }

    .chip-group {
        flex-wrap: nowrap;
        overflow-x: auto;
        scrollbar-width: none;
        padding-bottom: 2px;
    }

    .chip-group::-webkit-scrollbar {
        display: none;
    }

    .chip {
        flex-shrink: 0;
    }

    .result-card {
        padding: 10px;
        gap: 10px;
    }

    .result-thumb {
        width: 48px;
        height: 48px;
    }

    .result-thumb.placeholder svg {
        width: 20px;
        height: 20px;
    }

    .result-title {
        font-size: 0.875rem;
    }

    .result-ns {
        height: 16px;
        font-size: 0.5625rem;
    }

    .result-snippet {
        font-size: 0.75rem;
        -webkit-line-clamp: 2;
    }

    .result-cats {
        gap: 3px;
    }

    .cat-tag {
        height: 16px;
        font-size: 0.5rem;
    }
}

/* ── Lightbox ── */

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.25s ease;
}

.lightbox[hidden] {
    display: none;
}

.lightbox.open {
    opacity: 1;
}

.lightbox-backdrop {
    position: absolute;
    inset: 0;
    background-color: color-mix(in srgb, var(--background) 85%, transparent);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
}

.lightbox-container {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    overflow: hidden;
    touch-action: none;
    cursor: zoom-in;
}

.lightbox-container.zoomed {
    cursor: grab;
}

.lightbox-container.dragging {
    cursor: grabbing;
}

.lightbox-img {
    max-width: 90vw;
    max-height: 85vh;
    object-fit: contain;
    user-select: none;
    -webkit-user-drag: none;
    transform-origin: center center;
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.lightbox-container.dragging .lightbox-img,
.lightbox-container.pinch .lightbox-img {
    transition: none;
}

.lightbox-loading {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.lightbox-loading.hidden {
    display: none;
}

.lightbox-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid color-mix(in srgb, var(--foreground) 15%, transparent);
    border-top-color: var(--foreground);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.lightbox-close {
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background-color: color-mix(in srgb, var(--foreground) 10%, transparent);
    color: var(--foreground);
    cursor: pointer;
    transition: background-color 0.15s, transform 0.15s;
}

.lightbox-close:hover {
    background-color: color-mix(in srgb, var(--foreground) 20%, transparent);
    transform: scale(1.05);
}

.lightbox-close:active {
    transform: scale(0.95);
}

.lightbox-close svg {
    width: 20px;
    height: 20px;
}

@media (max-width: 640px) {
    .lightbox-close {
        top: 12px;
        right: 12px;
        width: 36px;
        height: 36px;
    }

    .lightbox-close svg {
        width: 18px;
        height: 18px;
    }
}