/* ========== Hero ========== */
.hero {
    position: relative;
    background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 50%, #1d4ed8 100%);
    color: white;
    padding: var(--space-2xl) 0;
    overflow: hidden;
    min-height: 0;
    display: flex;
    align-items: center;
}

#hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.hero > .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: var(--space-md);
    line-height: 1.15;
}

.hero-subtitle {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: var(--space-xl);
    line-height: 1.6;
}

.hero-cta {
    margin-bottom: var(--space-2xl);
}

.hero .btn-primary {
    background: white;
    color: var(--color-primary);
    font-size: 1rem;
    padding: 0.875rem 2rem;
}

.hero .btn-primary:hover {
    background: #f0f7ff;
    box-shadow: var(--shadow-xl);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    max-width: 700px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 800;
    display: block;
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: 0.75rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

@media (min-width: 640px) {
    .hero {
        padding: var(--space-3xl) 0;
    }
    .hero h1 {
        font-size: 2.5rem;
        margin-bottom: var(--space-lg);
    }
    .hero-subtitle {
        font-size: 1.25rem;
        margin-bottom: var(--space-2xl);
    }
    .hero-stats {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-lg);
    }
    .stat-number {
        font-size: 2.25rem;
    }
    .stat-label {
        font-size: 0.8125rem;
    }
    .hero .btn-primary {
        font-size: 1.125rem;
        padding: 1rem 2.5rem;
    }
}

@media (min-width: 1024px) {
    .hero {
        padding: var(--space-4xl) 0;
        min-height: 70vh;
    }
    .hero h1 {
        font-size: 3.5rem;
    }
    .hero-subtitle {
        font-size: 1.375rem;
    }
}

/* ========== What is VC Section ========== */
.what-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    transition: box-shadow var(--transition-base);
}

.what-card:hover {
    box-shadow: var(--shadow-md);
}

.what-icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
    line-height: 1;
}

.what-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.what-card p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

@media (min-width: 640px) {
    .what-card {
        padding: var(--space-xl);
    }
    .what-icon {
        font-size: 2.5rem;
        margin-bottom: var(--space-md);
    }
    .what-card h3 {
        font-size: 1.125rem;
    }
    .what-card p {
        font-size: 0.9375rem;
    }
}

/* ========== Nobel Section ========== */
.nobel-section {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
    padding: var(--space-2xl) 0;
}

.nobel-icon {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: var(--space-md);
}

.nobel-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    max-width: 800px;
    margin: 0 auto;
}

.nobel-item {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border-left: 4px solid var(--color-accent);
    box-shadow: var(--shadow-sm);
}

.nobel-year {
    display: inline-block;
    background: var(--color-accent);
    color: white;
    padding: 0.125rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.nobel-item h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.nobel-item p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

@media (min-width: 640px) {
    .nobel-section {
        padding: var(--space-3xl) 0;
    }
    .nobel-icon {
        font-size: 3rem;
        margin-bottom: var(--space-lg);
    }
    .nobel-timeline {
        gap: var(--space-xl);
    }
    .nobel-item {
        padding: var(--space-xl);
    }
    .nobel-item h3 {
        font-size: 1.125rem;
    }
    .nobel-item p {
        font-size: 0.9375rem;
    }
}

@media (min-width: 1024px) {
    .nobel-section {
        padding: var(--space-4xl) 0;
    }
}

/* ========== Featured Projects Section ========== */
.featured-section {
    padding: var(--space-2xl) 0;
}

.featured-actions {
    text-align: center;
    margin-top: var(--space-xl);
}

@media (min-width: 640px) {
    .featured-section {
        padding: var(--space-3xl) 0;
    }
    .featured-actions {
        margin-top: var(--space-2xl);
    }
}

@media (min-width: 1024px) {
    .featured-section {
        padding: var(--space-4xl) 0;
    }
}

/* ========== CTA Section ========== */
.cta-section {
    background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
    color: white;
    padding: var(--space-2xl) 0;
    text-align: center;
}

.cta-content {
    max-width: 640px;
    margin: 0 auto;
}

.cta-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.cta-section p {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: var(--space-xl);
}

.cta-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-section .btn-primary {
    background: white;
    color: var(--color-primary);
}

.cta-section .btn-primary:hover {
    background: #f0f7ff;
}

.cta-section .btn-secondary {
    border-color: rgba(255, 255, 255, 0.3);
    color: white;
    background: transparent;
}

.cta-section .btn-secondary:hover {
    border-color: white;
    background: rgba(255, 255, 255, 0.1);
}

@media (max-width: 479px) {
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    .cta-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
}

@media (min-width: 640px) {
    .cta-section {
        padding: var(--space-3xl) 0;
    }
    .cta-section h2 {
        font-size: 1.75rem;
        margin-bottom: var(--space-md);
    }
    .cta-section p {
        font-size: 1.125rem;
        margin-bottom: var(--space-2xl);
    }
}

@media (min-width: 1024px) {
    .cta-section {
        padding: var(--space-4xl) 0;
    }
    .cta-section h2 {
        font-size: 2rem;
    }
}

/* ========== Projects Directory ========== */
.projects-hero {
    background: var(--color-surface);
    padding: var(--space-xl) 0;
    border-bottom: 1px solid var(--color-border);
}

.filter-toolbar {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.filter-search {
    position: relative;
    width: 100%;
}

.filter-search-icon {
    position: absolute;
    left: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--color-text-light);
    font-size: 0.875rem;
    line-height: 1;
}

.search-input {
    width: 100%;
    padding: 0.625rem var(--space-md) 0.625rem 2.25rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text);
    font-family: inherit;
    font-size: 0.9375rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.filter-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-sm) var(--space-md);
}

.filter-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-light);
    flex-shrink: 0;
    min-width: 4.5rem;
}

.filter-btns {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.filter-btn {
    padding: var(--space-xs) var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    background: var(--color-surface);
    color: var(--color-text-muted);
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.filter-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.filter-btn:focus-visible {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.filter-btn.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.filter-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--color-border-light);
    margin-bottom: var(--space-xl);
}

.result-count {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.filter-clear {
    border: none;
    background: none;
    padding: 0;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary);
    cursor: pointer;
}

.filter-clear:hover {
    text-decoration: underline;
}

.filter-clear[data-hidden="true"] {
    display: none;
}

.no-results {
    text-align: center;
    padding: var(--space-3xl) var(--space-md);
    color: var(--color-text-muted);
}

.no-results-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.no-results[data-hidden="true"] {
    display: none;
}

@media (min-width: 640px) {
    .projects-hero {
        padding: var(--space-2xl) 0;
    }
    .filter-btn {
        padding: var(--space-sm) var(--space-md);
        font-size: 0.875rem;
    }
    .filter-toolbar {
        margin-bottom: var(--space-lg);
    }
    .filter-meta {
        margin-bottom: var(--space-2xl);
    }
}

.projects-grid {
    padding: var(--space-xl) 0;
}

@media (min-width: 640px) {
    .projects-grid {
        padding: var(--space-3xl) 0;
    }
}

.project-card[data-hidden="true"] {
    display: none;
}

/* ========== Project Detail ========== */
.project-detail {
    padding: var(--space-xl) 0;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--space-lg);
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: var(--color-primary);
}

.detail-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border);
}

.detail-icon {
    font-size: 2.5rem;
    line-height: 1;
    flex-shrink: 0;
}

.detail-info h1 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: var(--space-sm);
}

.detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    align-items: center;
    margin-bottom: var(--space-md);
}

.detail-meta .badge {
    font-size: 0.75rem;
}

.detail-year {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* GPU vendor sub-label next to the hardware badge — e.g. "GPU: NVIDIA, AMD".
   Empty for projects without recorded vendor info, so nothing renders. */
.detail-gpu-vendors {
    font-size: 0.85em;
    color: var(--color-text-muted);
    margin-left: 0.25rem;
}

.detail-website {
    font-size: 0.875rem;
    color: var(--color-primary);
}

.detail-website:hover {
    text-decoration: underline;
}

.detail-body {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.detail-description {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text);
}

.detail-description p + p {
    margin-top: var(--space-md);
}

.detail-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.sidebar-box {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.sidebar-box h2,
.sidebar-box h3 {
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.stat-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border-light);
    font-size: 0.875rem;
}

.stat-row:last-child {
    border-bottom: none;
}

.stat-row .label {
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.stat-row .value {
    font-weight: 600;
    text-align: right;
    min-width: 0;
    overflow-wrap: anywhere;
}

.highlight-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.highlight-list li {
    position: relative;
    padding-left: var(--space-lg);
    font-size: 0.875rem;
    line-height: 1.5;
}

.highlight-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
}

.nobel-box {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
    border-color: var(--color-accent);
}

.nobel-box h3 {
    color: var(--color-accent-dark);
}

.detail-actions {
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

@media (min-width: 640px) {
    .detail-header {
        gap: var(--space-xl);
        margin-bottom: var(--space-2xl);
        padding-bottom: var(--space-2xl);
    }
    .detail-icon {
        font-size: 3rem;
    }
    .detail-info h1 {
        font-size: 2rem;
    }
    .detail-description {
        font-size: 1.0625rem;
    }
    .sidebar-box {
        padding: var(--space-xl);
    }
    .stat-row {
        font-size: 0.9375rem;
    }
    .highlight-list li {
        font-size: 0.9375rem;
    }
}

@media (min-width: 768px) {
    .project-detail {
        padding: var(--space-3xl) 0;
    }
    .detail-body {
        grid-template-columns: 2fr 1fr;
    }
    .detail-actions {
        margin-top: var(--space-2xl);
        padding-top: var(--space-2xl);
    }
}

/* ========== About Page ========== */
.about-page {
    padding: var(--space-xl) 0;
}

.about-page h1 {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: var(--space-md);
}

.about-intro {
    font-size: 1.0625rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: var(--space-2xl);
    max-width: 800px;
}

.about-section {
    margin-bottom: var(--space-2xl);
}

.about-section h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.about-section p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-muted);
    max-width: 800px;
}

.about-steps {
    counter-reset: step;
}

.about-step {
    position: relative;
    padding-left: var(--space-2xl);
    margin-bottom: var(--space-md);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-muted);
}

.about-step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    font-size: 0.8125rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (min-width: 640px) {
    .about-page {
        padding: var(--space-2xl) 0;
    }
    .about-page h1 {
        font-size: 2rem;
    }
    .about-intro {
        font-size: 1.25rem;
        margin-bottom: var(--space-3xl);
    }
    .about-section {
        margin-bottom: var(--space-3xl);
    }
    .about-section h2 {
        font-size: 1.5rem;
    }
    .about-section p {
        font-size: 1.0625rem;
    }
    .about-step {
        padding-left: var(--space-3xl);
        font-size: 1.0625rem;
        margin-bottom: var(--space-lg);
    }
}

@media (min-width: 1024px) {
    .about-page {
        padding: var(--space-3xl) 0;
    }
    .about-page h1 {
        font-size: 2.5rem;
        margin-bottom: var(--space-lg);
    }
}

/* ========== 404 Page ========== */
.page-404 {
    padding: var(--space-3xl) 0;
    text-align: center;
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.page-404 h1 {
    font-size: 4rem;
    font-weight: 800;
    color: var(--color-border);
    line-height: 1;
    margin-bottom: var(--space-md);
}

.page-404 h2 {
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
}

.page-404 p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
}

@media (min-width: 640px) {
    .page-404 {
        padding: var(--space-4xl) 0;
        min-height: 60vh;
    }
    .page-404 h1 {
        font-size: 6rem;
    }
    .page-404 h2 {
        font-size: 1.5rem;
    }
}

/* ========== FAQ Page ========== */
.faq-page {
    padding: var(--space-xl) 0;
}

.faq-page .container {
    max-width: 760px;
}

.faq-page .section-header {
    margin-bottom: var(--space-2xl);
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-3xl);
}

.faq-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-item[open] {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-sm);
}

.faq-question {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    cursor: pointer;
    user-select: none;
    font-weight: 600;
    font-size: 1rem;
    color: var(--color-text);
    list-style: none;
}

.faq-question::-webkit-details-marker {
    display: none;
}

.faq-question:hover {
    background: var(--color-bg);
}

.faq-question:focus-visible {
    outline: none;
    box-shadow: inset 0 0 0 3px var(--color-primary-light);
}

.faq-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    flex-shrink: 0;
    border-radius: var(--radius-full);
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    font-size: 0.8125rem;
    font-weight: 700;
}

.faq-question-text {
    flex: 1;
}

.faq-chevron {
    flex-shrink: 0;
    color: var(--color-text-light);
    font-size: 1.5rem;
    line-height: 1;
    transition: transform var(--transition-fast);
}

.faq-item[open] .faq-chevron {
    transform: rotate(90deg);
    color: var(--color-primary);
}

.faq-answer {
    padding: 0 var(--space-lg) var(--space-lg);
    margin-left: calc(1.75rem + var(--space-md));
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    line-height: 1.65;
}

.faq-answer p + p {
    margin-top: var(--space-md);
}

.faq-answer a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.faq-answer a:hover {
    color: var(--color-primary-dark);
}

.faq-answer strong {
    color: var(--color-text);
}

.faq-cta {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
}

.faq-cta h2 {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.faq-cta p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
}

.faq-cta .cta-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

@media (min-width: 640px) {
    .faq-page {
        padding: var(--space-3xl) 0;
    }
    .faq-question {
        font-size: 1.0625rem;
        padding: var(--space-lg);
    }
    .faq-answer {
        font-size: 1rem;
        padding: 0 var(--space-lg) var(--space-lg);
    }
}

@media (max-width: 480px) {
    .faq-answer {
        margin-left: 0;
    }
}

/* ========== Full Directory ========== */
.directory-hero {
    padding: var(--space-2xl) 0 var(--space-lg);
    background: linear-gradient(180deg, #f1f5f9 0%, var(--color-bg) 100%);
    border-bottom: 1px solid var(--color-border-light);
}

.directory-hero .section-header {
    margin-bottom: var(--space-lg);
}

.directory-hero .eyebrow,
.projects-hero .eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-accent-dark);
    margin-bottom: var(--space-sm);
}

.directory-hero h1 {
    font-size: 1.625rem;
    line-height: 1.2;
}

.directory-summary {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    max-width: 720px;
    margin: var(--space-lg) auto;
}

.summary-stat {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.summary-stat .num {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 4px;
}

.summary-stat .lbl {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.directory-lead {
    text-align: center;
    color: var(--color-text-muted);
    max-width: 640px;
    margin: 0 auto;
    font-size: 0.9375rem;
}

.directory-lead a {
    color: var(--color-primary);
    font-weight: 600;
}

.section-header-aside {
    margin-top: var(--space-md);
    font-size: 0.9375rem;
    color: var(--color-text-muted);
}

.section-header-aside a {
    color: var(--color-primary);
    font-weight: 600;
}

/* Tribute strip */
.directory-tribute {
    background: linear-gradient(180deg, #fffbeb 0%, #ffffff 100%);
    padding: var(--space-xl) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.tribute-preamble {
    font-size: 0.9375rem;
    color: var(--color-text);
    text-align: center;
    margin-bottom: var(--space-lg);
    font-style: italic;
}

.tribute-list {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    max-width: 960px;
    margin: 0 auto;
}

.tribute-list li {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.tribute-list li:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.tribute-list a.tribute-name {
    display: inline-block;
    text-decoration: none;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 4px;
}

.tribute-list a.tribute-name:hover {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.tribute-role {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* Toolbar */
.directory-toolbar-section {
    padding: var(--space-xl) 0 var(--space-md);
}

.directory-toolbar {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.directory-actions {
    display: flex;
    justify-content: flex-end;
}

.directory-export {
    font-size: 0.9375rem;
    padding: 0.625rem 1.125rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
}

/* Table */
.directory-table-section {
    padding: 0 0 var(--space-3xl);
}

.directory-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    box-shadow: var(--shadow-sm);
    -webkit-overflow-scrolling: touch;
}

.directory-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
    min-width: 980px;
}

.directory-table thead th {
    background: #f8fafc;
    color: var(--color-text);
    text-align: left;
    padding: 0.75rem;
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-weight: 700;
    border-bottom: 2px solid var(--color-border);
    cursor: pointer;
    user-select: none;
    position: sticky;
    top: 0;
    z-index: 1;
    white-space: nowrap;
}

.directory-table thead th:hover {
    background: #eef2f7;
}

.directory-table thead th[data-sort]:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: -2px;
    background: #eef2f7;
}

.directory-table thead th::after {
    content: "";
    display: inline-block;
    width: 0.7em;
    color: var(--color-text-light);
    margin-left: 4px;
    opacity: 0.5;
}

.directory-table thead th[data-sort]::after {
    content: "↕";
}

.directory-table thead th[aria-sort="ascending"]::after {
    content: "↑";
    color: var(--color-primary);
    opacity: 1;
}

.directory-table thead th[aria-sort="descending"]::after {
    content: "↓";
    color: var(--color-primary);
    opacity: 1;
}

.directory-table thead th.num-col,
.directory-table td.num-col {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.directory-table tbody td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--color-border-light);
    vertical-align: top;
}

.directory-table tbody tr:hover {
    background: #f8fafc;
}

.directory-table .col-name {
    min-width: 220px;
    max-width: 320px;
}

.row-name {
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
}

.row-name a {
    color: var(--color-primary-dark);
    text-decoration: none;
}

.row-name a:hover {
    text-decoration: underline;
}

.row-desc {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    line-height: 1.45;
}

.row-subtype {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-top: 2px;
}

.status-pill {
    display: inline-block;
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-weight: 600;
    white-space: nowrap;
    background: #e2e8f0;
    color: #334155;
}

.status-pill.pill-active {
    background: #dcfce7;
    color: #166534;
}

.status-pill.pill-historical {
    background: #fef3c7;
    color: #92400e;
}

.status-pill.pill-completed {
    background: #e0e7ff;
    color: #3730a3;
}

.status-pill.pill-unknown {
    background: #f1f5f9;
    color: #64748b;
}

.col-sources {
    min-width: 180px;
}

.source-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    padding: 1px 6px;
    border-radius: var(--radius-sm);
    background: var(--color-border-light);
    color: var(--color-text-muted);
    margin: 1px 2px 1px 0;
    white-space: nowrap;
    border: 1px solid var(--color-border);
}

.source-badge.src-vcomp {
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    border-color: #bfdbfe;
}

.source-badge.src-boincstats {
    background: #fce7f3;
    color: #9d174d;
    border-color: #fbcfe8;
}

.source-badge.src-boincsynergy {
    background: #cffafe;
    color: #155e75;
    border-color: #a5f3fc;
}

.source-badge.src-dciactive {
    background: #dcfce7;
    color: #166534;
    border-color: #bbf7d0;
}

.source-badge.src-dcirecent,
.source-badge.src-dcipast {
    background: #fef3c7;
    color: #92400e;
    border-color: #fde68a;
}

.source-badge.src-equnwiki {
    background: #fee2e2;
    color: #991b1b;
    border-color: #fecaca;
}

.source-badge.src-wikipedia {
    background: #f3f4f6;
    color: #111827;
    border-color: #d1d5db;
}

.col-links a {
    display: inline-block;
    font-size: 0.75rem;
    padding: 2px 6px;
    margin: 1px 2px 1px 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-primary-dark);
    text-decoration: none;
    font-weight: 500;
    white-space: nowrap;
}

.col-links a:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
}

.directory-footnote {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-top: var(--space-lg);
    text-align: center;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

/* Responsive tweaks */
@media (min-width: 640px) {
    .directory-hero h1 {
        font-size: 2rem;
    }
    .directory-summary {
        grid-template-columns: repeat(4, 1fr);
    }
    .tribute-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .directory-hero h1 {
        font-size: 2.5rem;
    }
    .tribute-list {
        grid-template-columns: repeat(3, 1fr);
    }
    .directory-toolbar {
        flex-direction: row;
        flex-wrap: wrap;
        align-items: flex-end;
    }
    .directory-toolbar .filter-search {
        flex: 1 1 260px;
        min-width: 260px;
    }
    .directory-toolbar .filter-group {
        flex: 0 1 auto;
    }
    .directory-toolbar .directory-actions {
        margin-left: auto;
    }
}

/* Popular Projects → Full Directory invite */
.directory-invite {
    margin-top: var(--space-2xl);
    padding: var(--space-lg);
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    border-top: 1px solid var(--color-border-light);
}

.directory-invite a {
    color: var(--color-primary);
    font-weight: 600;
}

.directory-invite a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}