:root {
    --color-bg: #faf8f5;
    --color-text: #1a1714;
    --color-text-light: #6b6560;
    --color-accent: #514f4d;
    --color-border: #ddd6ce;
    --color-surface: #ffffff;
    --color-hover: #f5f2ed;
    
    --font-display: sans-serif;
    --font-body: sans-serif;

    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    --radius: 2px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Font imports */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;700;900&family=Crimson+Pro:wght@300;400;600&family=JetBrains+Mono:wght@400;500&display=swap');

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

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    font-size: 18px;
    overflow-x: hidden;
}

a {
    padding: 0;
    background: none;
    border: 0;
    text-decoration: underline;
    color: var(--color-text);
    transition: all var(--transition);
    display: inline;
}

a:hover {
    color: var(--color-accent);
    text-decoration: underline;
    transform: none;
}

.container {
    max-width: 100%;
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--spacing-xs);
}

/* Header */
.site-header {
    border: 1px solid var(--color-text);
    background: var(--color-surface);
    position: sticky;
    top: var(--spacing-sm);
    z-index: 100;
    backdrop-filter: blur(20px);
    background: rgba(250, 248, 245, 1);
    max-width: 600px;
    margin: var(--spacing-sm) var(--spacing-sm);
}

.site-header .container {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: flex-start;
    padding: var(--spacing-sm);
    gap: var(--spacing-xs);
    text-align: justify;
}

.site-title {
    font-family: var(--font-display);
    font-size: var(--font-size-sm);;
}

.site-subtitle {
    font-family: var(--font-display);
    font-size: var(--font-size-sm);;
}

.main-nav {
    display: flex;
    gap: var(--spacing-xs);
    justify-content: flex-start;

}

.nav-link {
    font-family: var(--font-body);
    font-size: var(--font-size-sm);
    text-decoration: none;
    color: var(--color-text);
    border: 1px solid var(--color-text);
    padding: 1px 5px 1px 5px;
    border-radius: var(--radius);
    transition: all var(--transition);
    position: relative;
    background: transparent;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text);
    border-color: var(--color-text);
}


/* Main Content */
.main-content {
    min-height: calc(100vh - 100px);
    padding: var(--spacing-xs) 0;
}

.section {
    display: none;
}

.section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.section-description {
    font-size: 1.1rem;
    color: var(--color-text-light);
    font-weight: 300;
    font-style: italic;
}

/* Sort Controls */
.sort-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    justify-content: flex-start;
    flex-wrap: wrap;
}

.header-sort-controls {
    margin-bottom: 0;
}

.sort-label {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text-light);
    font-weight: 600;
}

.sort-btn {
    padding: var(--spacing-xs) var(--spacing-xs);
    border: 0px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
}

.sort-btn:hover {
    border-color: var(--color-text-light);
    background: var(--color-hover);
}

.sort-btn.active {
    border-color: var(--color-accent);
    background: var(--color-accent);
    color: var(--color-surface);
}

/* Differentiate ascending vs descending sort order */
.sort-btn.active[data-direction="↑"] {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.sort-btn.active[data-direction="↓"] {
    background: var(--color-text);
    border-color: var(--color-text);
}

.sort-btn.active[data-direction="⟳"] {
    background: var(--color-text-light);
    border-color: var(--color-text-light);
}

.sort-btn[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  top: 150%;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 4px;
  background: var(--color-text-light);
  color: var(--color-surface);
  font-size: 10px;
  white-space: nowrap;
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  margin-bottom: 8px;
  z-index: 100;
}

.sort-btn[data-tooltip]:hover::after {
  opacity: 1;
}

.sort-btn[data-tooltip]:hover::before {
  opacity: 1;
}

/* Control SVG */

.sort-btn svg {
    width: 20px;
    stroke: var(--color-accent);
    stroke-width: 2;
}

.sort-btn:hover svg {
    fill: var(--color-text-light);
    stroke: var(--color-text-light);
}

.sort-btn.active svg {
    fill: var(--color-surface);
    stroke: var(--color-surface);
}

/* Aggregate sort buttons - same styles as specimen sort buttons */
.aggregate-sort-btn {
    padding: var(--spacing-xs) var(--spacing-xs);
    border: 0px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
}

.aggregate-sort-btn:hover {
    border-color: var(--color-text-light);
    background: var(--color-hover);
}

.aggregate-sort-btn.active {
    border-color: var(--color-accent);
    background: var(--color-accent);
    color: var(--color-surface);
}

.aggregate-sort-btn.active[data-direction="↑"] {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.aggregate-sort-btn.active[data-direction="↓"] {
    background: var(--color-text);
    border-color: var(--color-text);
}

.aggregate-sort-btn.active[data-direction="⟳"] {
    background: var(--color-text-light);
    border-color: var(--color-text-light);
}

.aggregate-sort-btn[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  top: 150%;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 4px;
  background: var(--color-text-light);
  color: var(--color-surface);
  font-size: 10px;
  white-space: nowrap;
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  margin-bottom: 8px;
  z-index: 100;
}

.aggregate-sort-btn[data-tooltip]:hover::after {
  opacity: 1;
}

.aggregate-sort-btn svg {
    width: 20px;
    stroke: var(--color-accent);
    stroke-width: 2;
}

.aggregate-sort-btn:hover svg {
    fill: var(--color-text-light);
    stroke: var(--color-text-light);
}

.aggregate-sort-btn.active svg {
    fill: var(--color-surface);
    stroke: var(--color-surface);
}

/* Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr));
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

.card {
    background: transparent;
    border: none;
    cursor: pointer;
    overflow: hidden;
    position: relative;
    padding: 0;
}

.card-fallback {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xs);
    background: var(--color-hover);
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    line-height: 1.4;
    opacity: 0;
    transition: opacity var(--transition);
}

.card.missing-image .card-fallback {
    opacity: 1;
}

.card.missing-image .card-image {
    opacity: 0;
}

.card-id {
    position: absolute;
    bottom: var(--spacing-xs);
    left: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--color-text);
    background: rgba(250, 248, 245, 0.85);
    padding: 2px 4px;
    border-radius: var(--radius);
    font-family: 'JetBrains Mono', monospace;
    font-weight: 500;
    pointer-events: none;
    z-index: 2;
}

.card-date {
    position: absolute;
    bottom: var(--spacing-xs);
    right: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--color-text);
    background: rgba(250, 248, 245, 0.85);
    padding: 2px 4px;
    border-radius: var(--radius);
    font-family: 'JetBrains Mono', monospace;
    font-weight: 500;
    pointer-events: none;
    z-index: 2;
}

.carousel-caption-below {
    font-size: var(--font-size-sm);
    color: var(--color-text);
    background: rgba(250, 248, 245, 0.85);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius);
    margin-top: var(--spacing-xs);
    text-align: center;
    max-width: 100%;
}

.carousel-exhibitions-text {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: var(--color-text);
    text-align: left;
    max-width: 100%;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: transparent;
    opacity: 0;
    pointer-events: none;
}

/* Show the tooltip text on hover */
.tooltip:hover .tooltiptext {
  visibility: visible;
}

.card:hover {
    border: 2px solid var(--color-accent);
    /* no border for minimal cards */
}

/* Make card images square and cover the area */
.card-image {
    display: block;
    width: 100%;
    aspect-ratio: 1 / 1;
    height: auto;
    object-fit: cover;
}

.card-content {
    padding: var(--spacing-md);
}

.card-title {
    font-family: var(--font-body);
    font-size: var(--font-size-md);
    font-weight: 700;
    color: var(--color-text);
}

.card-meta {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
}

.card-description {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.25rem 0.5rem;
    background: var(--color-hover);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    animation: none;
}

.modal.active {
    display: block;
}



.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: transparent;
    backdrop-filter: blur(8px);
}

.modal-content {
    position: relative;
    background: var(--color-bg);
    max-width: 1000px;
    margin: 5rem auto;
    max-height: calc(100vh - 6rem);
    overflow-y: auto;
    border: 2px solid var(--color-text);
}

.modal-close {
    position: absolute;
    top: var(--spacing-xs);
    right: var(--spacing-xs);
    background: transparent;
    border: 0px solid var(--color-border);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    color: var(--color-text);
}

.modal-close:hover {
    background: transparent;
    color: var(--color-accent);
}

#modal-body {
    padding: var(--spacing-md);
}

.detail-viewer {
    margin-bottom: var(--spacing-xs);
}

.detail-viewer model-viewer {
    width: 100%;
    height: 500px;
    background: transparent;
    border: 0px solid var(--color-border);
}

.dustball-collage {
    width: 100%;
    height: 500px;
    background: transparent;
    border: 0px solid var(--color-border);
}

.detail-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.detail-main h2 {
    font-family: var(--font-display);
    font-size: var(--font-size-);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.detail-main p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.detail-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xs) var(--spacing-sm);
    background: transparent;
    padding: var(--spacing-xs);
    border: 0px solid var(--color-border);
}

.meta-item {
    margin-bottom: var(--spacing-xs);
    padding-bottom: var(--spacing-xs);
    border-bottom: 0px solid var(--color-border);
}

.meta-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.meta-label {
    font-family: var(--font-body);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.meta-value {
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

/* About Section */
.about-content {
    max-width: 600px;
    margin: var(--spacing-sm) var(--spacing-sm);
}

.about-content p {
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: var(--color-text);
}

.about-content h2 {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

/* Carousel Section */
.carousel-controls {
    display: none;
    gap: var(--spacing-xs);
    align-items: center;
}

.header-carousel-controls {
    display: none;
}

.carousel-caption-header {
    display: none;
    font-size: var(--font-size-sm);
    font-style: italic;
    margin: 0;
    margin-top: var(--spacing-xs);
}

.carousel-container {
    margin: var(--spacing-sm) var(--spacing-sm);
    max-width: 600px;
}

.carousel-image-wrapper {
    position: relative;
}

.carousel-layout {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(220px, 1fr);
    gap: var(--spacing-md);
    align-items: start;
    width: 100%;
}

.carousel-media-column {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.carousel-text-column {
    align-self: stretch;
}

.carousel-image-wrapper img {
    width: auto;
    max-width: 100%;
    height: auto;
    max-height: 70vh;
    object-fit: contain;
    display: block;
}

.carousel-btn {
    padding: var(--spacing-xs) var(--spacing-xs);
    border: 0px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
}

.carousel-btn:hover {
    border-color: var(--color-text-light);
    background: var(--color-hover);
}

.carousel-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.carousel-counter {
    color: var(--color-text);
    font-size: var(--font-size-sm);
}

/* Carousel button SVG styling */
.carousel-btn svg {
    width: 20px;
    stroke: var(--color-accent);
    stroke-width: 2;
}

.carousel-btn:hover svg {
    fill: var(--color-text-light);
    stroke: var(--color-text-light);
}

.carousel-counter {
    color: var(--color-text);
    font-size: var(--font-size-sm);
}

/* Aggregate specific */
.aggregate-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(500px, 100%), 1fr));
    gap: var(--spacing-sm);
}

.aggregate-specimens {
    margin-top: var(--spacing-lg);
}

.aggregate-specimens h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
}

.specimens-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}



/* ===== RESPONSIVE ===== */

/* Tablet and below */
@media (max-width: 1024px) {
    .modal-content {
        max-width: 90%;
        margin: 3rem auto;
    }
    
    .aggregate-grid {
        grid-template-columns: 1fr;
    }
}

/* Mobile landscape and below */
@media (max-width: 768px) {
    .site-header .container {
        flex-direction: column;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm);
    }
    
    .site-title {
        font-size: var(--font-size-sm);
        max-width: 100%;
    }
    
    .main-nav {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .section-title {
        font-size: var(--font-size-lg);
    }
    
    .grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .aggregate-grid {
        grid-template-columns: 1fr;
    }

    .carousel-layout {
        grid-template-columns: 1fr;
    }

    .carousel-text-column {
        padding-top: var(--spacing-xs);
    }
    
    .detail-info {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .detail-viewer model-viewer,
    .dustball-collage {
        height: 400px;
    }
    
    .modal-content {
        margin: 1rem;
        max-height: calc(100vh - 2rem);
        max-width: calc(100% - 2rem);
    }
    
    #modal-body {
        padding: var(--spacing-sm);
    }

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

    .specimen-form {
        padding: var(--spacing-md);
    }

    .form-section {
        margin-bottom: var(--spacing-lg);
        padding-bottom: var(--spacing-lg);
    }

    .btn-submit {
        width: 100%;
    }
}

/* Mobile portrait */
@media (max-width: 480px) {
    body {
        font-size: 16px;
    }
    
    .site-header .container {
        padding: var(--spacing-xs);
    }
    
    .site-title {
        font-size: var(--font-size-xs);
    }
    
    .nav-link {
        padding: var(--spacing-xs);
        font-size: var(--font-size-xs);
    }
    
    .main-content {
        padding: var(--spacing-xs) 0;
    }
    
    .sort-controls {
        gap: var(--spacing-xs);
        padding: 0 var(--spacing-xs);
    }
    
    .sort-btn {
        padding: 0.4rem;
        font-size: 0.75rem;
    }
    
    .grid,
    .aggregate-grid {
        gap: var(--spacing-xs);
    }
    
    .detail-viewer model-viewer,
    .dustball-collage {
        height: 300px;
    }
    
    .modal-content {
        margin: 0.5rem;
        max-height: calc(100vh - 1rem);
        max-width: calc(100% - 1rem);
    }
    
    #modal-body {
        padding: var(--spacing-xs);
    }
    
    .detail-main h2 {
        font-size: var(--font-size-lg);
    }
    
    .meta-item {
        font-size: var(--font-size-sm);
    }
    
    .modal-close {
        width: 36px;
        height: 36px;
        font-size: 1.75rem;
    }
}