:root {
    --text-dark: #111827;
    --text-muted: #4b5563;
    --text-light: #9ca3af;
    --border-gray: #e5e7eb;
    --bg-light: #f9fafb;
    --hf-yellow: #facc15;
    --hf-yellow-hover: #eab308;
    --hf-yellow-light: #fffbeb;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --radius: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-dark);
    background-color: #ffffff;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: inherit; }

.hidden { display: none !important; }

/* Top Banner */
.top-banner {
    background-color: var(--hf-yellow-light);
    border-bottom: 1px solid #fef3c7;
    padding: 0.5rem 1rem;
    text-align: center;
    font-size: 0.85rem;
    color: #b45309;
    font-weight: 500;
}
.top-banner a {
    color: inherit;
    text-decoration: underline;
    cursor: pointer;
}

/* Header */
header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 1.5rem;
    border-bottom: 1px solid var(--border-gray);
    background-color: #ffffff;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-grow: 1;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.03em;
    flex-shrink: 0;
}

.brand-logo img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    mix-blend-mode: multiply;
}

.search-wrapper {
    position: relative;
    width: 280px;
    cursor: pointer;
}

.search-wrapper input {
    width: 100%;
    background-color: #f3f4f6;
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 0.35rem 2rem;
    font-size: 0.85rem;
    outline: none;
    cursor: pointer;
}

.search-wrapper input:focus {
    background-color: #fff;
    border-color: #cbd5e1;
    cursor: text;
}

.search-icon {
    position: absolute;
    left: 0.6rem;
    top: 52%;
    transform: translateY(-50%);
    font-size: 0.8rem;
    color: var(--text-light);
    pointer-events: none;
}

.shortcut-badge {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.7rem;
    background: #e5e7eb;
    padding: 0.1rem 0.3rem;
    border-radius: 4px;
    color: var(--text-muted);
    font-family: monospace;
    pointer-events: none;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    list-style: none;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-left: 1.5rem;
}

.nav-menu a {
    text-decoration: none;
    color: inherit;
    transition: color 0.1s;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--text-dark);
}

.nav-separator {
    width: 1px;
    height: 16px;
    background-color: var(--border-gray);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--hf-yellow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

.user-name {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
}

.btn-signin {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
}

.btn-signup {
    background-color: var(--hf-yellow);
    color: #000;
    border: none;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.1s;
}

.btn-signup:hover { background-color: var(--hf-yellow-hover); }

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    padding: 0.25rem;
}

/* Main content */
#app-content {
    flex: 1;
    min-height: 60vh;
}

/* Hero */
.hero-section {
    text-align: center;
    padding: 4rem 1rem 3rem;
    max-width: 800px;
    margin: 0 auto;
}

.hero-logo-large {
    width: 90px;
    height: 90px;
    object-fit: contain;
    margin-bottom: 1rem;
    mix-blend-mode: multiply;
}

.hero-section h1 {
    font-size: 2.75rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    margin-bottom: 0.75rem;
    line-height: 1.1;
}

.hero-section p {
    font-size: 1.2rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 1.5rem;
}

.hero-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn-primary {
    background-color: var(--hf-yellow);
    color: #000;
    border: none;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.5rem 1.25rem;
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    text-decoration: none;
    display: inline-block;
    transition: background 0.1s;
}

.btn-primary:hover { background-color: var(--hf-yellow-hover); }

.btn-secondary {
    background: #fff;
    color: var(--text-dark);
    border: 1px solid var(--border-gray);
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.5rem 1.25rem;
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    transition: border-color 0.1s;
}

.btn-secondary:hover { border-color: #cbd5e1; }

.btn-outline {
    background: #fff;
    color: var(--text-dark);
    border: 1px solid var(--border-gray);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
}

.btn-outline:hover { border-color: #cbd5e1; }

.btn-icon {
    background: #fff;
    border: 1px solid var(--border-gray);
    border-radius: 6px;
    padding: 0.35rem 0.65rem;
    font-size: 0.85rem;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.1s;
}

.btn-icon:hover { border-color: #cbd5e1; }
.btn-icon.liked { background: var(--hf-yellow-light); border-color: var(--hf-yellow); }

/* Grid */
.grid-layout {
    max-width: 1400px;
    margin: 0 auto 3rem;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.column-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.column-header {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-dark);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.see-all {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-decoration: none;
}

.see-all:hover { color: var(--text-dark); }

.item-card {
    background: #ffffff;
    border: 1px solid var(--border-gray);
    border-radius: var(--radius);
    padding: 0.85rem;
    margin-bottom: 0.65rem;
    display: block;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.1s, box-shadow 0.1s;
}

.item-card:hover {
    border-color: #cbd5e1;
    box-shadow: var(--shadow-sm);
}

.card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.25rem;
    gap: 0.5rem;
}

.card-title {
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.card-title span { color: var(--text-light); font-weight: 400; }

.card-meta {
    font-size: 0.75rem;
    color: var(--text-light);
    flex-shrink: 0;
}

.card-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.4;
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.tag {
    font-size: 0.7rem;
    background-color: #f3f4f6;
    color: var(--text-muted);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    font-weight: 500;
}

.tag-blue { background-color: #eff6ff; color: #2563eb; }
.tag-green { background-color: #f0fdf4; color: #16a34a; }

/* Stats banner */
.stats-banner {
    display: flex;
    justify-content: center;
    gap: 3rem;
    padding: 2.5rem 1rem;
    background: var(--bg-light);
    border-top: 1px solid var(--border-gray);
    margin-bottom: 0;
}

.stat {
    text-align: center;
}

.stat strong {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.stat span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Page headers */
.page-header {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem 1rem;
}

.page-header.centered { text-align: center; }

.page-header h1 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 0.5rem;
}

.page-subtitle {
    color: var(--text-muted);
    font-size: 1rem;
}

.section-title {
    max-width: 1200px;
    margin: 2rem auto 1rem;
    padding: 0 1.5rem;
    font-size: 1.1rem;
    font-weight: 700;
}

/* Filter bar */
.filter-bar {
    max-width: 1200px;
    margin: 0 auto 1.5rem;
    padding: 0 1.5rem;
    display: flex;
    gap: 0.75rem;
}

.filter-input, .filter-select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-gray);
    border-radius: 6px;
    font-size: 0.85rem;
    font-family: inherit;
    outline: none;
}

.filter-input { flex: 1; max-width: 400px; }
.filter-input:focus, .filter-select:focus { border-color: #cbd5e1; }

/* Browse grid */
.browse-grid {
    max-width: 1200px;
    margin: 0 auto 3rem;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 0.65rem;
}

.browse-grid .item-card { margin-bottom: 0; }

/* Detail pages */
.repo-header {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 1.5rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.repo-breadcrumb {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.repo-breadcrumb a {
    color: var(--text-muted);
    text-decoration: none;
}

.repo-breadcrumb a:hover { color: var(--text-dark); }

.repo-id strong { color: var(--text-dark); }

.repo-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.detail-layout {
    max-width: 1200px;
    margin: 0 auto 3rem;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 2rem;
}

.detail-main { min-width: 0; }

.readme-section {
    border: 1px solid var(--border-gray);
    border-radius: var(--radius);
    overflow: hidden;
}

.readme-toolbar {
    background: var(--bg-light);
    border-bottom: 1px solid var(--border-gray);
    padding: 0.5rem 1rem;
}

.readme-tab {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
}

.readme-tab.active { color: var(--text-dark); }

.readme-content {
    padding: 1.5rem;
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--text-muted);
}

.readme-content h1 { font-size: 1.5rem; color: var(--text-dark); margin-bottom: 1rem; }
.readme-content h2 { font-size: 1.2rem; color: var(--text-dark); margin: 1.5rem 0 0.75rem; }
.readme-content h3 { font-size: 1rem; color: var(--text-dark); margin: 1rem 0 0.5rem; }
.readme-content code {
    background: #f3f4f6;
    padding: 0.15rem 0.35rem;
    border-radius: 4px;
    font-size: 0.85rem;
}
.readme-content pre {
    background: #1e1e1e;
    color: #d4d4d4;
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    margin: 1rem 0;
    font-size: 0.8rem;
}
.readme-content pre code { background: none; padding: 0; color: inherit; }
.readme-content ul { margin: 0.5rem 0 0.5rem 1.5rem; }
.readme-content table { border-collapse: collapse; margin: 1rem 0; width: 100%; }
.readme-content td, .readme-content th {
    border: 1px solid var(--border-gray);
    padding: 0.4rem 0.75rem;
    font-size: 0.85rem;
}

.detail-sidebar {
    border: 1px solid var(--border-gray);
    border-radius: var(--radius);
    padding: 1.25rem;
    height: fit-content;
    position: sticky;
    top: 80px;
}

.detail-sidebar h3 {
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.info-list dt {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: 0.65rem;
}

.info-list dt:first-child { margin-top: 0; }

.info-list dd {
    font-size: 0.85rem;
    font-weight: 500;
    margin-left: 0;
}

.sidebar-tags {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

/* Demo container */
.demo-container {
    border: 1px solid var(--border-gray);
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.demo-app {
    padding: 1.5rem;
}

.demo-app h3 {
    font-size: 1.1rem;
    margin-bottom: 0.35rem;
}

.demo-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1.25rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
    color: var(--text-muted);
}

.form-group input[type="range"] {
    width: calc(100% - 60px);
    vertical-align: middle;
}

.form-group select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-gray);
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.85rem;
}

.range-val {
    display: inline-block;
    width: 55px;
    text-align: right;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
}

.demo-result {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: 6px;
    font-size: 0.85rem;
}

.demo-result ul { margin: 0.5rem 0 0 1.25rem; }
.demo-result h4 { margin-bottom: 0.5rem; }

.result-score {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.result-note {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: 0.5rem;
}

/* Upload zone */
.upload-zone {
    border: 2px dashed var(--border-gray);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
    margin-bottom: 1rem;
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--hf-yellow);
    background: var(--hf-yellow-light);
}

.upload-icon { font-size: 2rem; display: block; margin-bottom: 0.5rem; }
.upload-placeholder p { font-size: 0.85rem; color: var(--text-muted); }

#cheek-canvas {
    max-width: 100%;
    border-radius: 6px;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.metric {
    background: #fff;
    border: 1px solid var(--border-gray);
    border-radius: 6px;
    padding: 0.75rem;
    text-align: center;
}

.metric span {
    display: block;
    font-size: 0.75rem;
    color: var(--text-light);
    margin-bottom: 0.25rem;
}

.metric strong { font-size: 1.25rem; }

/* Fabric viz */
.stretch-viz {
    margin: 1rem 0;
    height: 24px;
    background: #f3f4f6;
    border-radius: 12px;
    overflow: hidden;
}

.fabric-bar {
    height: 100%;
    width: 0;
    background: #22c55e;
    border-radius: 12px;
    transition: width 0.5s ease, background 0.3s;
}

/* Docs */
.docs-layout {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 2.5rem;
}

.docs-nav h2 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.docs-nav ul { list-style: none; }

.docs-nav a {
    display: block;
    padding: 0.4rem 0.75rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 6px;
    margin-bottom: 0.15rem;
}

.docs-nav a:hover { background: var(--bg-light); color: var(--text-dark); }
.docs-nav a.active { background: var(--hf-yellow-light); color: var(--text-dark); font-weight: 600; }

.docs-content h1 {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.03em;
}

.docs-content p {
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.docs-code pre {
    background: #1e1e1e;
    color: #d4d4d4;
    padding: 1.25rem;
    border-radius: var(--radius);
    overflow-x: auto;
    font-size: 0.8rem;
    line-height: 1.6;
    margin: 1rem 0;
}

/* Pricing */
.pricing-grid {
    max-width: 960px;
    margin: 0 auto 3rem;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.pricing-card {
    border: 1px solid var(--border-gray);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    text-align: center;
}

.pricing-card.featured {
    border-color: var(--hf-yellow);
    box-shadow: var(--shadow-md);
    position: relative;
}

.pricing-card.featured::before {
    content: 'Popular';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--hf-yellow);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.15rem 0.6rem;
    border-radius: 10px;
    text-transform: uppercase;
}

.pricing-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}

.price {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
}

.price span {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
}

.pricing-card ul {
    list-style: none;
    text-align: left;
    margin-bottom: 1.5rem;
}

.pricing-card li {
    font-size: 0.85rem;
    color: var(--text-muted);
    padding: 0.35rem 0;
}

.pricing-card .btn-primary { width: 100%; }

/* Solutions */
.solutions-grid {
    max-width: 1000px;
    margin: 0 auto 2rem;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.solution-card {
    border: 1px solid var(--border-gray);
    border-radius: var(--radius);
    padding: 1.75rem;
}

.solution-icon { font-size: 2rem; margin-bottom: 0.75rem; }
.solution-card h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.solution-card p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }

.cta-banner {
    text-align: center;
    padding: 3rem 1.5rem;
    background: var(--bg-light);
    margin-bottom: 0;
}

.cta-banner h2 { margin-bottom: 1rem; font-size: 1.5rem; }

/* Empty state */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--text-muted);
}

.empty-state.large { padding: 5rem 1.5rem; }
.empty-icon { font-size: 3rem; margin-bottom: 1rem; }
.empty-state h1 { color: var(--text-dark); margin-bottom: 0.75rem; }
.empty-state p { margin-bottom: 1.5rem; }

/* Footer */
footer {
    border-top: 1px solid var(--border-gray);
    background: var(--bg-light);
    padding: 2.5rem 1.5rem 1.5rem;
    margin-top: auto;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 2rem;
}

.footer-brand p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    line-height: 1.5;
}

.footer-col h4 {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.75rem;
    color: var(--text-muted);
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.4rem; }

.footer-col a {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-decoration: none;
}

.footer-col a:hover { color: var(--text-dark); }

.footer-bottom {
    max-width: 1200px;
    margin: 2rem auto 0;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-light);
}

.footer-disclaimer {
    font-size: 0.75rem;
    color: var(--text-light);
    font-style: italic;
}

/* Modals */
.modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 15vh;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.15s, visibility 0.15s;
}

.modal.open {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.4);
}

.modal-content {
    position: relative;
    background: #fff;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    width: 90%;
    max-width: 440px;
    padding: 2rem;
    z-index: 1;
}

.modal-content.search-modal-content {
    max-width: 560px;
    padding: 0;
    overflow: hidden;
}

.search-modal-header {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-gray);
    gap: 0.5rem;
}

.search-modal-header input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 1rem;
    font-family: inherit;
    padding: 0.25rem;
}

.search-modal-hint {
    padding: 1.5rem;
    text-align: center;
    color: var(--text-light);
    font-size: 0.85rem;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--text-light);
    line-height: 1;
}

.modal-close:hover { color: var(--text-dark); }

.modal-content h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
}

.modal-content .form-group input {
    width: 100%;
    padding: 0.55rem 0.75rem;
    border: 1px solid var(--border-gray);
    border-radius: 6px;
    font-size: 0.9rem;
    font-family: inherit;
    outline: none;
}

.modal-content .form-group input:focus { border-color: #cbd5e1; }

.modal-content .btn-primary {
    width: 100%;
    padding: 0.65rem;
    margin-top: 0.5rem;
}

.auth-switch {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.auth-switch a {
    color: var(--text-dark);
    font-weight: 600;
    text-decoration: none;
}

.auth-switch a:hover { text-decoration: underline; }

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--text-dark);
    color: #fff;
    padding: 0.65rem 1.25rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    z-index: 300;
    opacity: 0;
    transition: transform 0.3s, opacity 0.3s;
    pointer-events: none;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Mobile nav */
.mobile-nav {
    position: fixed;
    inset: 0;
    z-index: 150;
    background: rgba(0,0,0,0.4);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.mobile-nav.open { opacity: 1; visibility: visible; }

.mobile-nav-panel {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 280px;
    background: #fff;
    padding: 1.5rem;
    transform: translateX(100%);
    transition: transform 0.2s;
}

.mobile-nav.open .mobile-nav-panel { transform: translateX(0); }

.mobile-nav-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
}

.mobile-nav ul {
    list-style: none;
    margin-top: 2rem;
}

.mobile-nav li { margin-bottom: 0.25rem; }

.mobile-nav a {
    display: block;
    padding: 0.65rem 0;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    border-bottom: 1px solid var(--border-gray);
}

.mobile-nav a:hover { color: var(--text-dark); }

/* Hero extras */
.hero-search-hint {
    margin-top: 1.25rem;
    font-size: 0.85rem;
    color: var(--text-light);
}

.hero-search-hint kbd {
    background: #f3f4f6;
    border: 1px solid var(--border-gray);
    border-radius: 4px;
    padding: 0.1rem 0.35rem;
    font-family: monospace;
    font-size: 0.8rem;
}

/* Home sections */
.home-section {
    max-width: 1200px;
    margin: 0 auto 3rem;
    padding: 0 1.5rem;
}

.section-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.section-heading {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

/* Task chips */
.task-categories {
    max-width: 1200px;
    margin: 0 auto 2.5rem;
    padding: 0 1.5rem;
}

.task-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.browse-chips {
    max-width: 1200px;
    margin: 0 auto 1rem;
    padding: 0 1.5rem;
}

.task-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    background: #f3f4f6;
    border: 1px solid transparent;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.1s;
}

.task-chip span {
    background: #e5e7eb;
    padding: 0.05rem 0.35rem;
    border-radius: 10px;
    font-size: 0.7rem;
}

.task-chip:hover { border-color: #cbd5e1; color: var(--text-dark); }
.task-chip.active { background: var(--hf-yellow-light); border-color: var(--hf-yellow); color: var(--text-dark); }

/* Pagination */
.pagination {
    max-width: 1200px;
    margin: 0 auto 3rem;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-info { font-size: 0.85rem; color: var(--text-muted); }

.page-links { display: flex; gap: 0.35rem; align-items: center; }

.page-btn {
    padding: 0.35rem 0.65rem;
    border: 1px solid var(--border-gray);
    border-radius: 6px;
    font-size: 0.85rem;
    text-decoration: none;
    color: var(--text-muted);
    transition: all 0.1s;
}

.page-btn:hover { border-color: #cbd5e1; color: var(--text-dark); }
.page-btn.active { background: var(--hf-yellow); border-color: var(--hf-yellow); color: #000; font-weight: 600; }

.page-ellipsis { color: var(--text-light); padding: 0 0.25rem; }

/* Organizations */
.org-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.org-grid.full { max-width: 1200px; margin: 0 auto 3rem; padding: 0 1.5rem; }

.org-card {
    display: block;
    border: 1px solid var(--border-gray);
    border-radius: var(--radius);
    padding: 1.25rem;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.1s, box-shadow 0.1s;
}

.org-card:hover { border-color: #cbd5e1; box-shadow: var(--shadow-sm); }

.org-card-top { display: flex; gap: 0.75rem; margin-bottom: 0.75rem; }

.org-avatar {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: var(--hf-yellow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1rem;
    flex-shrink: 0;
}

.org-avatar.large { width: 64px; height: 64px; font-size: 1.5rem; border-radius: 12px; }

.org-name { font-weight: 700; font-size: 0.95rem; }

.verified { color: #2563eb; font-size: 0.8rem; }

.org-stats { font-size: 0.75rem; color: var(--text-light); margin-top: 0.15rem; }

.org-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.4;
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.org-followers { font-size: 0.75rem; color: var(--text-light); }

.org-profile { max-width: 1200px; margin: 0 auto; padding: 2rem 1.5rem 1rem; }

.org-profile-header {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
    flex-wrap: wrap;
}

.org-profile-header h1 { font-size: 1.75rem; font-weight: 800; margin-bottom: 0.5rem; }

.org-profile-desc { color: var(--text-muted); margin-bottom: 0.75rem; max-width: 600px; }

.org-profile-stats {
    display: flex;
    gap: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.org-profile-stats strong { color: var(--text-dark); }

/* Collections */
.collection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}

.collection-grid.full { max-width: 1200px; margin: 0 auto 3rem; padding: 0 1.5rem; }

.collection-card {
    display: block;
    border: 1px solid var(--border-gray);
    border-radius: var(--radius);
    padding: 1.25rem;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.1s;
}

.collection-card:hover { border-color: var(--hf-yellow); }

.collection-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 0.5rem; }

.collection-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.4;
    margin-bottom: 0.75rem;
}

.collection-count { font-size: 0.75rem; color: var(--text-light); font-weight: 500; }

.collection-more {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 3rem;
}

/* Blog */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.blog-grid.full { max-width: 1200px; margin: 0 auto 3rem; padding: 0 1.5rem; }

.blog-card {
    display: block;
    border: 1px solid var(--border-gray);
    border-radius: var(--radius);
    padding: 1.25rem;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.1s;
}

.blog-card:hover { border-color: #cbd5e1; }

.blog-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    background: var(--hf-yellow-light);
    color: #b45309;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    margin-bottom: 0.65rem;
}

.blog-card h3 {
    font-size: 0.95rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 0.5rem;
}

.blog-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 0.75rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-meta { font-size: 0.75rem; color: var(--text-light); }

.blog-article {
    max-width: 720px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem 3rem;
}

.blog-article h1 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin: 0.75rem 0 1rem;
}

.blog-body { line-height: 1.8; color: var(--text-muted); }

.blog-body h2 { color: var(--text-dark); font-size: 1.25rem; margin: 1.5rem 0 0.75rem; }

.blog-body ul { margin: 0.75rem 0 0.75rem 1.5rem; }

.blog-body p { margin-bottom: 1rem; }

.blog-cta { display: flex; gap: 0.75rem; margin-top: 2rem; }

/* Papers */
.papers-list {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.papers-list.full { margin-bottom: 3rem; }

.paper-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border-gray);
}

.paper-row h3 { font-size: 0.95rem; font-weight: 700; margin-bottom: 0.35rem; }

.paper-authors { font-size: 0.8rem; color: var(--text-light); margin-bottom: 0.35rem; }

.paper-desc { font-size: 0.85rem; color: var(--text-muted); line-height: 1.4; }

.paper-citations {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    white-space: nowrap;
    flex-shrink: 0;
}

/* Leaderboard */
.leaderboard-table {
    max-width: 1000px;
    margin: 0 auto 3rem;
    padding: 0 1.5rem;
    border: 1px solid var(--border-gray);
    border-radius: var(--radius);
    overflow: hidden;
}

.lb-header, .lb-row {
    display: grid;
    grid-template-columns: 40px 1fr 140px 90px 90px;
    gap: 1rem;
    padding: 0.75rem 1.25rem;
    align-items: center;
    font-size: 0.85rem;
}

.lb-header {
    background: var(--bg-light);
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-gray);
}

.lb-row {
    text-decoration: none;
    color: inherit;
    border-bottom: 1px solid var(--border-gray);
    transition: background 0.1s;
}

.lb-row:last-child { border-bottom: none; }
.lb-row:hover { background: var(--bg-light); }

.lb-rank { font-weight: 700; color: var(--text-light); }
.lb-rank:first-child { color: var(--hf-yellow-hover); }

.lb-name { font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lb-name strong { color: var(--text-light); font-weight: 400; }

.lb-likes, .lb-dl { color: var(--text-muted); font-size: 0.8rem; }

/* Pricing 4-col */
.pricing-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    max-width: 1100px;
}

/* Responsive */
@media (max-width: 1024px) {
    .grid-layout { grid-template-columns: 1fr; }
    .search-wrapper, .nav-menu { display: none; }
    .mobile-menu-btn { display: block; }
    .detail-layout { grid-template-columns: 1fr; }
    .detail-sidebar { position: static; }
    .pricing-grid { grid-template-columns: 1fr; max-width: 400px; }
    .docs-layout { grid-template-columns: 1fr; }
    .docs-nav { display: flex; overflow-x: auto; gap: 0.5rem; }
    .docs-nav h2 { display: none; }
    .docs-nav ul { display: flex; gap: 0.25rem; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
    .hero-section h1 { font-size: 2rem; }
    .hero-section p { font-size: 1rem; }
    .stats-banner { flex-wrap: wrap; gap: 1.5rem; }
    .solutions-grid { grid-template-columns: 1fr; }
    .repo-header { flex-direction: column; align-items: flex-start; }
    .footer-inner { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
    .metrics-grid { grid-template-columns: 1fr; }
    .lb-header, .lb-row { grid-template-columns: 30px 1fr 70px; }
    .lb-task, .lb-dl { display: none; }
    .org-profile-header { flex-direction: column; }
    .paper-row { flex-direction: column; }
}