/* UniversalDecimalInator Card Catalog - Library Aesthetic */

:root {
    --wood-dark: #5c3a1e;
    --wood-medium: #8b5e3c;
    --wood-light: #c49a6c;
    --wood-pale: #e8d5b7;
    --card-cream: #faf3e0;
    --card-shadow: rgba(92, 58, 30, 0.3);
    --ink-black: #2c1810;
    --ink-gray: #6b5b4f;
    --ink-faded: #a89888;
    --accent-green: #4a7c59;
    --accent-red: #8b3a3a;
    --accent-gold: #c9a84c;
    --accent-blue: #4a6b8c;
    --drawer-bg: #3d2517;
    --drawer-front: #6b4423;
    --label-cream: #f5e6c8;
    --font-serif: 'Georgia', 'Times New Roman', serif;
    --font-mono: 'Courier New', 'Courier', monospace;
    --font-sans: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-serif);
    background: var(--wood-dark);
    color: var(--ink-black);
    min-height: 100vh;
    background-image:
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 40px,
            rgba(0,0,0,0.03) 40px,
            rgba(0,0,0,0.03) 41px
        ),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 40px,
            rgba(0,0,0,0.02) 40px,
            rgba(0,0,0,0.02) 41px
        );
}

/* Header */
.catalog-header {
    background: linear-gradient(180deg, var(--wood-medium) 0%, var(--wood-dark) 100%);
    border-bottom: 4px solid var(--wood-light);
    padding: 1rem 2rem;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    position: relative;
}

.catalog-github {
    position: absolute;
    top: 0.75rem;
    right: 1.5rem;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.catalog-github:hover {
    opacity: 1;
}

.catalog-header::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
}

.catalog-home {
    text-decoration: none;
    display: block;
}

.catalog-title {
    font-family: 'Courier New', 'Lucida Console', monospace;
    font-size: 1.6rem;
    color: var(--card-cream);
    letter-spacing: 0.1em;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    margin-bottom: 0;
}

.catalog-home:hover .catalog-title {
    opacity: 0.85;
}

/* Navigation */
.nav-bar {
    background: var(--drawer-bg);
    padding: 0.75rem 2rem;
    display: flex;
    gap: 1rem;
    align-items: center;
    border-bottom: 2px solid var(--wood-medium);
}

.nav-link {
    color: var(--wood-pale);
    text-decoration: none;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.4rem 0.8rem;
    border-radius: 3px;
    transition: all 0.2s;
}

.nav-link:hover {
    background: var(--wood-medium);
    color: var(--card-cream);
}

.nav-link.active {
    background: var(--wood-medium);
    color: var(--accent-gold);
}

/* Search bar */
.search-bar {
    display: flex;
    gap: 0.5rem;
    margin-left: auto;
    flex: 1;
    max-width: 400px;
}

.search-input {
    flex: 1;
    padding: 0.5rem 1rem;
    border: 2px solid var(--wood-medium);
    border-radius: 4px;
    background: var(--card-cream);
    font-family: var(--font-serif);
    font-size: 0.9rem;
    color: var(--ink-black);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 2px rgba(201, 168, 76, 0.3);
}

.search-btn {
    padding: 0.5rem 1rem;
    background: var(--wood-medium);
    color: var(--card-cream);
    border: none;
    border-radius: 4px;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.2s;
}

.search-btn:hover {
    background: var(--wood-light);
    color: var(--ink-black);
}

/* Main content */
.catalog-body {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Stats bar */
.stats-bar {
    display: flex;
    gap: 2rem;
    padding: 1rem 2rem;
    background: var(--drawer-bg);
    border-bottom: 2px solid var(--wood-medium);
    justify-content: center;
}

.stat-item {
    text-align: center;
    color: var(--wood-pale);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-gold);
    font-family: var(--font-mono);
}

.stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    opacity: 0.7;
    font-family: var(--font-sans);
}

/* Section headers */
.section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 2rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--wood-light);
}

.section-title {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    color: var(--card-cream);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.section-divider {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--wood-light), transparent);
}

/* UDC Shelves / Drawers */
.shelf-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.drawer {
    background: linear-gradient(180deg, var(--drawer-front) 0%, var(--drawer-bg) 100%);
    border: 2px solid var(--wood-medium);
    border-radius: 6px;
    padding: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    text-decoration: none;
}

.drawer:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.4);
    border-color: var(--wood-light);
}

.drawer-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.drawer-tag {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    background: var(--wood-pale);
    color: var(--ink-black);
    padding: 0.25rem 0.6rem;
    border-radius: 2px;
    text-decoration: none;
    white-space: nowrap;
    transition: background 0.2s;
}

.drawer:hover .drawer-tag {
    background: var(--accent-green);
    color: white;
}

.drawer-title {
    color: var(--card-cream);
    font-family: var(--font-serif);
    font-size: 1rem;
    line-height: 1.3;
}

.drawer-count {
    color: var(--ink-faded);
    font-family: var(--font-sans);
    font-size: 0.8rem;
}

/* Card catalog cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.catalog-card {
    background: var(--card-cream);
    border: 1px solid var(--wood-light);
    border-radius: 4px;
    padding: 1.25rem;
    box-shadow:
        2px 2px 8px var(--card-shadow),
        inset 0 0 20px rgba(196, 154, 108, 0.1);
    position: relative;
    transition: all 0.2s;
    color: var(--ink-black);
    display: block;
}

.catalog-card-link {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.catalog-card .no-overlay {
    position: relative;
    z-index: 2;
    pointer-events: auto;
}

.catalog-card::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 8px;
    right: 8px;
    bottom: 8px;
    border: 1px solid var(--wood-pale);
    border-radius: 2px;
    pointer-events: none;
}

.catalog-card > *:not(.catalog-card-link) {
    position: relative;
    z-index: 0;
}

.catalog-card:hover {
    transform: translateY(-3px);
    box-shadow: 4px 4px 16px var(--card-shadow);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--wood-pale);
}

.card-format {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--ink-gray);
    background: var(--wood-light);
    padding: 0.15rem 0.4rem;
    border-radius: 2px;
}

.card-abstract {
    font-family: var(--font-serif);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 0.75rem;
    color: var(--ink-black);
}

/* Card metadata */
.card-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

.card-tag {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    background: var(--accent-green);
    color: white;
    padding: 0.15rem 0.4rem;
    border-radius: 2px;
    text-transform: lowercase;
    text-decoration: none;
    transition: all 0.2s;
}

.card-tag:hover {
    background: var(--wood-medium);
    color: var(--card-cream);
}

.card-topic {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    background: var(--wood-light);
    color: var(--ink-black);
    padding: 0.15rem 0.4rem;
    border-radius: 2px;
}

.card-date {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--ink-gray);
    margin-left: auto;
}

/* Card detail view */
.card-detail {
    background: var(--card-cream);
    border: 1px solid var(--wood-light);
    border-radius: 4px;
    padding: 2rem;
    box-shadow: 4px 4px 16px var(--card-shadow);
    max-width: 800px;
    margin: 0 auto;
}

.card-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--wood-pale);
}

.card-header-left {
    flex: 1;
    min-width: 0;
}

.card-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--ink-black);
    margin: 0 0 0.5rem 0;
    line-height: 1.3;
}

.catalog-card .card-title {
    font-size: 1.1rem;
    margin: 0 0 0.5rem 0;
}

.card-title a {
    color: inherit;
    text-decoration: none;
}

.card-title a:hover {
    color: var(--accent-blue);
}

.card-detail .card-meta {
    gap: 0.75rem;
}

.card-udc {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: bold;
    background: var(--wood-pale);
    padding: 0.25rem 0.6rem;
    border-radius: 3px;
    border: 1px solid var(--wood-light);
    color: var(--ink-black);
    display: inline-flex;
    align-items: baseline;
    gap: 0.4rem;
    flex-wrap: wrap;
    text-decoration: none;
    transition: all 0.2s;
}

.card-udc:hover {
    background: var(--wood-light);
    color: var(--ink-black);
}

.card-udc .card-udc-number {
    font-weight: bold;
}

.card-udc .card-udc-label {
    font-family: var(--font-serif);
    font-size: 0.85rem;
    font-weight: normal;
    overflow-wrap: break-word;
    word-break: break-word;
}

.card-udc-secondary {
    font-family: 'Courier New', 'Lucida Console', monospace;
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    background: var(--wood-light);
    color: var(--ink-gray);
    padding: 0.1rem 0.35rem;
    border-radius: 2px;
    margin-left: 0.5rem;
}

.card-author {
    font-family: var(--font-serif);
    font-size: 0.85rem;
    color: var(--ink-gray);
    font-style: italic;
}

.card-updated {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    color: var(--ink-gray);
    opacity: 0.7;
}

.card-detail-actions {
    display: flex;
    gap: 0.5rem;
}

/* Buttons */
.btn {
    padding: 0.4rem 1rem;
    border: none;
    border-radius: 3px;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: var(--wood-medium);
    color: var(--card-cream);
}

.btn-primary:hover {
    background: var(--wood-light);
    color: var(--ink-black);
}

.btn-danger {
    background: var(--accent-red);
    color: white;
}

.btn-danger:hover {
    background: #a04040;
}

.btn-secondary {
    background: var(--wood-light);
    color: var(--ink-black);
}

.btn-secondary:hover {
    background: var(--accent-gold);
}

/* Card fields */
.card-field {
    margin-bottom: 1rem;
}

.card-field-label {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--ink-gray);
    margin-bottom: 0.25rem;
}

.card-field-value {
    font-family: var(--font-serif);
    font-size: 1rem;
    line-height: 1.6;
}

/* Classification list */
.classification-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.class-item {
    display: inline-flex;
    align-items: baseline;
    gap: 0.35rem;
    background: var(--wood-pale);
    padding: 0.2rem 0.6rem;
    border-radius: 3px;
    border: 1px solid var(--wood-light);
}

.class-number {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: bold;
    color: var(--ink-black);
}

.class-number a {
    color: var(--ink-black);
    text-decoration: none;
}

.class-number a:hover {
    color: var(--accent-gold);
}

.class-label {
    font-family: var(--font-serif);
    font-size: 0.85rem;
    color: var(--ink-gray);
}

/* Document text */
.document-text {
    background: white;
    border: 1px solid var(--wood-pale);
    border-radius: 3px;
    padding: 1.5rem;
    margin-top: 1.5rem;
    font-family: var(--font-serif);
    font-size: 0.9rem;
    line-height: 1.8;
    white-space: pre-wrap;
    max-height: 600px;
    overflow-y: auto;
}

/* RAG view - raw card markdown */
.rag-view {
    background: white;
    border: 1px solid var(--wood-light);
    border-radius: 3px;
    padding: 1rem;
    margin-top: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.5;
    color: var(--ink-black);
    white-space: pre-wrap;
    word-break: break-all;
    max-height: 500px;
    overflow-y: auto;
}

/* Artifact items */
.artifact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}

.artifact-type {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background: var(--wood-pale);
    padding: 0.1rem 0.4rem;
    border-radius: 2px;
    color: var(--ink-gray);
    text-transform: uppercase;
}

.artifact-meta {
    font-size: 0.8rem;
    color: var(--ink-gray);
    opacity: 0.7;
}

.artifact-files {
    font-size: 0.85rem;
    color: var(--ink-gray);
    margin-left: 1rem;
    margin-bottom: 0.25rem;
}

/* Tag list */
.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.tag-list .card-tag {
    font-size: 0.8rem;
    background: var(--accent-green);
    color: white;
    border: none;
    text-transform: lowercase;
    text-decoration: none;
    transition: all 0.2s;
}

.tag-list .card-tag:hover {
    background: var(--accent-gold);
    color: var(--ink-black);
}

/* Topic list */
.topic-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.card-topic {
    font-family: var(--font-serif);
    font-size: 0.85rem;
    background: var(--drawer-bg);
    color: var(--wood-pale);
    padding: 0.2rem 0.6rem;
    border-radius: 3px;
    text-decoration: none;
    border: 1px solid var(--wood-medium);
    transition: all 0.2s;
}

.card-topic:hover {
    background: var(--wood-medium);
    color: var(--card-cream);
}

/* Form elements */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--ink-gray);
    margin-bottom: 0.5rem;
}

.form-input, .form-textarea, .form-select {
    width: 100%;
    padding: 0.6rem 1rem;
    border: 2px solid var(--wood-light);
    border-radius: 4px;
    background: white;
    font-family: var(--font-serif);
    font-size: 0.9rem;
    color: var(--ink-black);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 2px rgba(201, 168, 76, 0.3);
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 1.5rem;
    font-family: var(--font-sans);
    font-size: 0.85rem;
}

.breadcrumb a {
    color: var(--wood-pale);
    text-decoration: none;
}

.breadcrumb a:hover {
    color: var(--accent-gold);
}

.breadcrumb-sep {
    color: var(--ink-faded);
}

.breadcrumb-current {
    color: var(--wood-pale);
}

/* Pagination */
.pagination {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    margin: 2rem 0;
}

.page-link {
    padding: 0.4rem 0.8rem;
    background: var(--drawer-bg);
    color: var(--wood-pale);
    border: 1px solid var(--wood-medium);
    border-radius: 3px;
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.page-link:hover {
    background: var(--wood-medium);
}

.page-link.active {
    background: var(--wood-medium);
    color: var(--accent-gold);
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--ink-faded);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state-text {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.empty-state-hint {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    opacity: 0.7;
}

/* Ingest form */
.ingest-form {
    max-width: 800px;
    margin: 0 auto;
    background: var(--card-cream);
    border: 1px solid var(--wood-light);
    border-radius: 4px;
    padding: 2rem;
    box-shadow: 4px 4px 16px var(--card-shadow);
}

/* Footer */
.catalog-footer {
    text-align: center;
    padding: 2rem;
    color: var(--ink-faded);
    font-family: var(--font-sans);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    border-top: 1px solid var(--wood-medium);
    margin-top: 3rem;
}

.catalog-footer a {
    color: var(--wood-pale);
    text-decoration: none;
}

.catalog-footer a:visited {
    color: var(--wood-pale);
}

.catalog-footer a:hover {
    color: var(--accent-gold);
}

/* Responsive */
@media (max-width: 768px) {
    .catalog-body {
        padding: 1rem;
    }

    .shelf-grid {
        grid-template-columns: 1fr;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .stats-bar {
        flex-wrap: wrap;
        gap: 1rem;
    }

    .nav-bar {
        flex-wrap: wrap;
    }

    .search-bar {
        max-width: 100%;
        width: 100%;
        margin-left: 0;
        margin-top: 0.5rem;
    }
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--drawer-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--wood-medium);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--wood-light);
}