/* ======================================================
   OPEN WEIGHTS MANIFESTO 2026 - PURE DARK EDITORIAL DESIGN
   ====================================================== */

:root {
    /* Color Palette - Warm Dark Obsidian */
    --bg-main: #141413;
    --bg-surface: #1c1c1a;
    --bg-card: rgba(28, 28, 26, 0.85);
    --bg-subtle: #262624;

    --border-main: rgba(255, 255, 255, 0.08);
    --border-active: rgba(217, 119, 87, 0.4);

    --text-main: #faf9f5;
    --text-muted: #b0aea5;
    --text-faint: #6e6d66;

    /* Accents */
    --accent-primary: #d97757; /* Warm Terracotta */
    --accent-secondary: #6a9bcc; /* Muted Slate Blue */
    --accent-olive: #788c5d; /* Warm Sage Green */
    --accent-amber: #e2b13c; /* Muted Gold */

    --font-serif: 'Noto Serif SC', Georgia, serif;
    --font-sans: 'Plus Jakarta Sans', 'Noto Sans SC', sans-serif;
    --font-display: 'Syne', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --header-height: 68px;
    --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Setup */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + 72px);
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 32px;
}

a {
    color: inherit;
    text-decoration: none;
}

.font-serif { font-family: var(--font-serif); }
.font-sans { font-family: var(--font-sans); }
.font-mono { font-family: var(--font-mono); }

.text-center { text-align: center; }
.justify-center { justify-content: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* Grain Texture Overlay */
.grain-overlay {
    position: fixed;
    inset: 0;
    background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
    z-index: 1000;
    opacity: 0.5;
}

.ambient-glow {
    position: fixed;
    top: -150px;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(circle, rgba(217, 119, 87, 0.07) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

/* Masthead Bar */
.masthead-bar {
    border-bottom: 1px solid var(--border-main);
    background: var(--bg-surface);
    font-size: 0.82rem;
    padding: 8px 0;
    color: var(--text-muted);
}

.masthead-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.masthead-meta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.meta-divider {
    color: var(--text-faint);
}

.masthead-btn {
    background: transparent;
    border: 1px solid var(--border-main);
    color: var(--text-muted);
    padding: 4px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

/* Site Header */
.site-header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    background: rgba(20, 20, 19, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-main);
    z-index: 900;
    display: flex;
    align-items: center;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    flex-direction: column;
}

.brand-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-main);
}

.brand-sub {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--accent-primary);
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    gap: 28px;
}

.nav-item {
    font-size: 0.92rem;
    color: var(--text-muted);
    font-weight: 500;
    transition: var(--transition);
}

.nav-item:hover, .nav-item.active {
    color: var(--accent-primary);
}

/* Symmetrical Hero Section */
.hero-section.symmetric-hero {
    padding: 80px 0 60px;
    border-bottom: 1px solid var(--border-main);
}

.hero-center-content {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.issue-seal {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 6px 18px;
    border-radius: 20px;
    background: var(--bg-surface);
    border: 1px solid var(--border-main);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--accent-primary);
    margin-bottom: 28px;
}

.hero-display-title {
    font-family: var(--font-sans);
    font-size: 3.8rem;
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
}

.title-sub {
    display: block;
    font-weight: 400;
    color: var(--text-muted);
    font-size: 2.8rem;
    margin-top: 8px;
}

.hero-lead-text {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 40px;
    max-width: 68ch;
}

/* Symmetric 4-Column Stat Bar */
.symmetric-stats-bar {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 40px;
}

.stat-box {
    background: var(--bg-surface);
    border: 1px solid var(--border-main);
    border-radius: 10px;
    padding: 20px 16px;
    text-align: center;
    transition: var(--transition);
}

.stat-box:hover {
    border-color: var(--border-active);
}

.stat-val {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-primary);
    margin-bottom: 4px;
}

.stat-lbl {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    background: var(--accent-primary);
    color: #ffffff;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: 6px;
    transition: var(--transition);
}

.btn-primary:hover {
    background: #c56545;
    transform: translateY(-2px);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: transparent;
    border: 1px solid var(--border-main);
    color: var(--text-main);
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
}

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

/* Marquee Ticker */
.ticker-section {
    border-bottom: 1px solid var(--border-main);
    background: var(--bg-subtle);
    padding: 12px 0;
    overflow: hidden;
}

.ticker-wrapper {
    display: flex;
    white-space: nowrap;
    overflow: hidden;
}

.ticker-content {
    display: inline-flex;
    gap: 36px;
    animation: marquee 35s linear infinite;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.ticker-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.ticker-bullet {
    font-weight: bold;
    color: var(--accent-primary);
}

.ticker-logo-img {
    height: 18px;
    max-width: 64px;
    object-fit: contain;
    background: #ffffff;
    padding: 2px 6px;
    border-radius: 4px;
    margin-right: 6px;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Section Title Block */
.section-title-block {
    margin-bottom: 44px;
}

.section-number {
    font-size: 0.78rem;
    color: var(--accent-primary);
    letter-spacing: 2px;
    margin-bottom: 8px;
    display: block;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
}

/* Symmetric Bento Section */
.bento-section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-main);
}

.bento-grid.symmetric-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.bento-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-main);
    border-radius: 12px;
    padding: 32px 28px;
    transition: var(--transition);
}

.bento-card:hover {
    border-color: var(--border-active);
}

.card-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--accent-primary);
    margin-bottom: 16px;
}

.bento-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.card-text {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.command-box {
    margin-top: 20px;
    background: var(--bg-main);
    border: 1px solid var(--border-main);
    border-radius: 6px;
    padding: 12px 16px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.prompt { color: var(--accent-primary); font-weight: bold; }
.cmd-highlight { color: var(--accent-amber); }

/* Symmetric Reader Section */
.reader-section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-main);
}

.symmetric-toc-bar {
    position: sticky;
    top: calc(var(--header-height) + 12px);
    background: var(--bg-surface);
    border: 1px solid var(--border-main);
    border-radius: 10px;
    padding: 12px 24px;
    margin-bottom: 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 800;
    backdrop-filter: blur(12px);
}

.toc-bar-title {
    font-size: 0.8rem;
    color: var(--accent-primary);
    letter-spacing: 1px;
}

.symmetric-toc-nav {
    display: flex;
    gap: 16px;
    overflow-x: auto;
}

.toc-link {
    font-size: 0.85rem;
    color: var(--text-muted);
    padding: 4px 10px;
    border-radius: 4px;
    white-space: nowrap;
    transition: var(--transition);
}

.toc-link:hover, .toc-link.active {
    color: var(--accent-primary);
    background: rgba(217, 119, 87, 0.1);
}

.btn-aside {
    padding: 6px 14px;
    background: transparent;
    border: 1px solid var(--border-main);
    color: var(--text-muted);
    border-radius: 4px;
    font-size: 0.82rem;
    cursor: pointer;
    transition: var(--transition);
}

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

/* Symmetrical Article Layout */
.editorial-article.symmetric-article {
    max-width: 780px;
    margin: 0 auto;
}

.article-header {
    border-bottom: 1px solid var(--border-main);
    padding-bottom: 32px;
    margin-bottom: 48px;
}

.article-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-primary);
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.article-title {
    font-size: 2.5rem;
    font-weight: 900;
    line-height: 1.25;
    margin-bottom: 16px;
}

.article-byline {
    font-size: 0.88rem;
    color: var(--text-faint);
    display: flex;
    align-items: center;
    gap: 10px;
}

.article-section {
    margin-bottom: 56px;
    scroll-margin-top: calc(var(--header-height) + 80px);
}

.section-heading {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 12px;
}

.heading-num {
    color: var(--accent-primary);
    font-size: 1.1rem;
}

.paragraph {
    font-size: 1.1rem;
    line-height: 1.85;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.paragraph.drop-cap::first-letter {
    font-family: var(--font-display);
    font-size: 3.6rem;
    float: left;
    line-height: 0.8;
    padding-top: 4px;
    padding-right: 12px;
    color: var(--accent-primary);
    font-weight: 800;
}

.editorial-quote {
    margin: 36px 0;
    padding: 24px 32px;
    border-top: 2px solid var(--accent-primary);
    border-bottom: 2px solid var(--accent-primary);
    background: var(--bg-surface);
    font-size: 1.2rem;
    line-height: 1.7;
    color: var(--text-main);
    font-style: italic;
}

.text-lead {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-main);
}

.conclusion-box {
    margin-top: 32px;
    padding: 24px;
    background: var(--bg-surface);
    border: 1px solid var(--border-active);
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent-primary);
}

/* Comparison Matrix Section */
.matrix-section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-main);
}

.editorial-table-container {
    background: var(--bg-surface);
    border: 1px solid var(--border-main);
    border-radius: 12px;
    overflow-x: auto;
}

.editorial-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.editorial-table th,
.editorial-table td {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-main);
}

.editorial-table th {
    font-size: 1.05rem;
    font-weight: 700;
}

.editorial-table th.col-highlight {
    color: var(--accent-primary);
}

.editorial-table td.dim-title {
    font-weight: 600;
    width: 22%;
    color: var(--text-main);
}

.editorial-table td.col-highlight {
    background: rgba(217, 119, 87, 0.04);
    color: var(--text-main);
    border-left: 2px solid var(--accent-primary);
}

/* Official PDF Page 3 Style Logo Wall Section */
.signatories-section {
    padding: 80px 0;
}

.signatories-section .container {
    max-width: 1280px;
    padding: 0 24px;
}

.filter-bar {
    margin-bottom: 36px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.search-field {
    position: relative;
    max-width: 540px;
}

.search-field i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-faint);
}

.search-field input {
    width: 100%;
    padding: 12px 16px 12px 44px;
    background: var(--bg-surface);
    border: 1px solid var(--border-main);
    border-radius: 6px;
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition);
}

.search-field input:focus {
    border-color: var(--accent-primary);
}

.filter-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.pill-btn {
    padding: 6px 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border-main);
    color: var(--text-muted);
    border-radius: 20px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.pill-btn:hover {
    color: var(--text-main);
    border-color: var(--accent-primary);
}

.pill-btn.active {
    background: var(--accent-primary);
    color: #ffffff;
    border-color: var(--accent-primary);
}

/* Official PDF Page 3 Style Logo Wall Grid */
.logo-wall-card {
    background: #ffffff; /* Clean white canvas background matching PDF Page 3 */
    border-radius: 16px;
    padding: 48px 32px;
    box-shadow: 0 16px 45px rgba(0, 0, 0, 0.45);
    width: 100%;
    box-sizing: border-box;
    overflow: hidden; /* Prevent grid overflow outside white card bounds */
}

.logo-wall-grid {
    display: grid;
    grid-template-columns: repeat(8, minmax(0, 1fr)); /* Force strict 8 equal columns without overflowing card! */
    gap: 36px 12px;
    align-items: center;
    justify-items: center;
    width: 100%;
    box-sizing: border-box;
}

.logo-wall-item {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    width: 100%;
    min-width: 0;
    padding: 0 2px;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: pointer;
    position: relative;
    box-sizing: border-box;
}

/* Perfect Row 7 Centering (when 50 items displayed in 8-column grid):
   49th item (Trajectory) starts at column 4, 50th item (Y Combinator) at column 5 */
.logo-wall-grid:not(.filtered) .logo-wall-item:nth-child(49) {
    grid-column: 4;
}

.logo-wall-grid:not(.filtered) .logo-wall-item:nth-child(50) {
    grid-column: 5;
}

.logo-wall-img {
    max-height: 38px;
    max-width: 100%; /* Guarantee images shrink proportionally within grid columns! */
    width: auto;
    height: auto;
    object-fit: contain;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.logo-wall-item:hover .logo-wall-img {
    transform: scale(1.12);
}

.logo-wall-item.dimmed {
    opacity: 0.12;
    filter: grayscale(1);
}

/* Tooltip on Logo Hover */
.logo-wall-item::after {
    content: attr(data-title);
    position: absolute;
    bottom: -34px;
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    background: #141413;
    color: #faf9f5;
    padding: 5px 12px;
    border-radius: 4px;
    font-size: 0.78rem;
    font-family: var(--font-sans);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    z-index: 99;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
}

.logo-wall-item:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--border-main);
    padding: 48px 0;
    background: var(--bg-surface);
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.footer-brand h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.footer-brand p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-meta {
    font-size: 0.8rem;
    color: var(--text-faint);
}

/* Toast */
.toast-box {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--accent-primary);
    color: #ffffff;
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 0.85rem;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    opacity: 0;
    transform: translateY(16px);
    transition: var(--transition);
    pointer-events: none;
    z-index: 1000;
}

.toast-box.show {
    opacity: 1;
    transform: translateY(0);
}

/* Mobile & Tablet Responsive */
@media (max-width: 1100px) {
    .logo-wall-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 32px 12px; }
    .logo-wall-grid:not(.filtered) .logo-wall-item:nth-child(49) { grid-column: 3; }
    .logo-wall-grid:not(.filtered) .logo-wall-item:nth-child(50) { grid-column: 4; }
}

@media (max-width: 800px) {
    .logo-wall-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px 10px; }
    .logo-wall-grid:not(.filtered) .logo-wall-item:nth-child(49) { grid-column: 2; }
    .logo-wall-grid:not(.filtered) .logo-wall-item:nth-child(50) { grid-column: 3; }
}

@media (max-width: 550px) {
    .logo-wall-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 8px; }
    .logo-wall-grid:not(.filtered) .logo-wall-item:nth-child(49) { grid-column: 1; }
    .logo-wall-grid:not(.filtered) .logo-wall-item:nth-child(50) { grid-column: 2; }
    .logo-wall-card { padding: 28px 16px; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero-display-title { font-size: 2.5rem; }
    .title-sub { font-size: 1.8rem; }
    .symmetric-stats-bar { grid-template-columns: 1fr; }
}