/* ============================================================ Shared content-page theme Single source of truth for the light/editorial theme used by the subdirectory content pages (e.g. /state-of-ai-2026/, /ai-hackathon-guide/). Link it with: Pair it with /assets/theme.js for scrollspy, fade-in, and disclosure behavior. The root index.html does NOT use this. Edit here once to restyle every content page. ============================================================ */ @import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Source+Serif+4:ital,wght@0,400;0,500;0,600;0,700;1,400&family=JetBrains+Mono:wght@400;500&display=swap'); /* ── Design tokens ── Light is the default token set. Dark overrides them via the [data-theme="dark"] attribute set on by /assets/theme.js (and an inline head guard on each page to avoid a flash). Brightened accents keep contrast legible on the dark background. */ :root { color-scheme: light; --bg: #ffffff; --surface: #f5f5f7; --surface-2: #ebebef; --border: #d1d1d6; --text: #1a1a1a; --text-dim: #333333; --accent: #4338ca; --accent-glow: rgba(67,56,202,0.07); --warm: #b45309; --warm-glow: rgba(180,83,9,0.05); --green: #047857; --rose: #be123c; --cyan: #0e7490; --toc-bg: rgba(255,255,255,0.92); --src-hover: #3730a3; } :root[data-theme="dark"] { color-scheme: dark; --bg: #0e1116; --surface: #171b22; --surface-2: #21262f; --border: #2c333d; --text: #e8ebf0; --text-dim: #aab2bd; --accent: #818cf8; --accent-glow: rgba(129,140,248,0.12); --warm: #fbbf24; --warm-glow: rgba(251,191,36,0.08); --green: #34d399; --rose: #fb7185; --cyan: #22d3ee; --toc-bg: rgba(14,17,22,0.9); --src-hover: #a5b4fc; } * { margin: 0; padding: 0; box-sizing: border-box; } html { scroll-behavior: smooth; } body { font-family: 'Source Serif 4', Georgia, 'Times New Roman', serif; background: var(--bg); color: var(--text); line-height: 1.7; font-size: 18px; overflow-x: hidden; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; transition: background-color .35s ease, color .35s ease; } /* ── Scrollbar ── */ ::-webkit-scrollbar { width: 6px; } ::-webkit-scrollbar-track { background: var(--bg); } ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; } /* ── Hero ── */ .hero { min-height: 100vh; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; padding: 2rem; position: relative; overflow: hidden; } .hero::before { content: ''; position: absolute; top: -30%; left: 50%; transform: translateX(-50%); width: 800px; height: 800px; background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%); pointer-events: none; animation: pulse 8s ease-in-out infinite; } @keyframes pulse { 0%, 100% { opacity: 0.5; transform: translateX(-50%) scale(1); } 50% { opacity: 1; transform: translateX(-50%) scale(1.15); } } .hero-label { font-family: 'JetBrains Mono', monospace; font-size: 0.85rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--accent); margin-bottom: 1.5rem; position: relative; } .hero h1 { font-family: 'Inter', sans-serif; font-size: clamp(3rem, 8vw, 5.5rem); font-weight: 800; line-height: 1.1; letter-spacing: -0.03em; position: relative; max-width: 900px; } .hero h1 em { font-style: normal; background: linear-gradient(135deg, var(--accent), var(--cyan)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; } .hero-sub { font-size: 1.25rem; color: var(--text-dim); margin-top: 1.5rem; max-width: 640px; position: relative; font-weight: 500; } .hero-meta { margin-top: 3rem; font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; color: var(--text-dim); letter-spacing: 0.15em; text-transform: uppercase; position: relative; } .hero-link { display: inline-block; margin-top: 1.75rem; font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--accent); text-decoration: none; border-bottom: 1px dotted var(--accent); transition: border-color 0.2s, color 0.2s; position: relative; } .hero-link:hover { color: var(--src-hover); border-bottom-color: var(--src-hover); } .scroll-hint { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 0.5rem; color: var(--text-dim); font-size: 0.8rem; letter-spacing: 0.15em; text-transform: uppercase; font-family: 'JetBrains Mono', monospace; animation: float 2.5s ease-in-out infinite; } @keyframes float { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } } .scroll-hint .arrow { font-size: 1.2rem; } /* ── Navigation (sticky TOC) ── */ .toc { position: sticky; top: 0; z-index: 100; background: var(--toc-bg); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); padding: 0.75rem 2rem; overflow-x: auto; white-space: nowrap; display: flex; gap: 0.25rem; align-items: center; } .toc a { font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-dim); text-decoration: none; padding: 0.4rem 0.8rem; border-radius: 4px; transition: all 0.25s; flex-shrink: 0; } .toc a:hover, .toc a.active { color: var(--text); background: var(--surface-2); } /* ── Content structure ── */ .container { max-width: 900px; margin: 0 auto; padding: 0 2rem; } section { padding: 5rem 0; border-bottom: 1px solid var(--border); } section:last-child { border-bottom: none; } .section-number { font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--accent); margin-bottom: 0.75rem; display: block; } h2 { font-family: 'Inter', sans-serif; font-size: clamp(2rem, 5vw, 2.8rem); font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; margin-bottom: 2rem; } h3 { font-family: 'Inter', sans-serif; font-size: 1.6rem; font-weight: 700; margin-top: 3rem; margin-bottom: 1rem; color: var(--text); } h4 { font-size: 0.95rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; color: var(--warm); margin-top: 2.5rem; margin-bottom: 0.75rem; } p { color: var(--text-dim); margin-bottom: 1.25rem; font-size: 1.125rem; font-weight: 500; } p strong { color: var(--text); font-weight: 700; } /* ── Callout boxes ── */ .callout { background: var(--surface); border-left: 3px solid var(--accent); padding: 1.25rem 1.5rem; margin: 2rem 0; border-radius: 0 8px 8px 0; } .callout.warm { border-left-color: var(--warm); } .callout.green { border-left-color: var(--green); } .callout.rose { border-left-color: var(--rose); } .callout.cyan { border-left-color: var(--cyan); } .callout p { margin-bottom: 0; font-size: 1.05rem; } .callout p:not(:last-child) { margin-bottom: 0.75rem; } .callout-label { font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); margin-bottom: 0.5rem; display: block; } .callout.warm .callout-label { color: var(--warm); } .callout.green .callout-label { color: var(--green); } .callout.rose .callout-label { color: var(--rose); } .callout.cyan .callout-label { color: var(--cyan); } /* ── Stat grid ── */ .stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; margin: 2rem 0; } .stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 1.25rem; text-align: center; } .stat-card .number { font-family: 'Inter', sans-serif; font-size: 2.4rem; font-weight: 800; color: var(--text); line-height: 1; margin-bottom: 0.4rem; } .stat-card .number.accent { color: var(--accent); } .stat-card .number.warm { color: var(--warm); } .stat-card .number.green { color: var(--green); } .stat-card .number.rose { color: var(--rose); } .stat-card .number.cyan { color: var(--cyan); } .stat-card .label { font-size: 0.85rem; color: var(--text-dim); letter-spacing: 0.03em; font-weight: 500; } /* ── Sub-topic pills ── */ .sub-topics { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1.5rem 0 2.5rem; } .sub-topic-pill { font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; letter-spacing: 0.05em; padding: 0.35rem 0.75rem; background: var(--surface-2); border: 1px solid var(--border); border-radius: 100px; color: var(--text-dim); cursor: pointer; transition: all 0.25s; text-decoration: none; } .sub-topic-pill:hover { border-color: var(--accent); color: var(--text); background: var(--accent-glow); } /* ── Separator ── */ .sep { width: 60px; height: 2px; background: var(--border); margin: 3rem 0; } /* ── Timeline ── */ .timeline { position: relative; margin: 2.5rem 0; padding-left: 2rem; } .timeline::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: linear-gradient(to bottom, var(--accent), var(--cyan), var(--green)); } .timeline-item { position: relative; margin-bottom: 2rem; padding-left: 1rem; } .timeline-item::before { content: ''; position: absolute; left: -2.35rem; top: 0.5rem; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); border: 2px solid var(--bg); } .timeline-item .year { font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; color: var(--accent); letter-spacing: 0.1em; } .timeline-item .event { font-size: 1.05rem; color: var(--text-dim); margin-top: 0.25rem; font-weight: 500; } /* ── Pattern diagram ── */ .pattern-diagram { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 1.5rem 2rem; margin: 1.5rem 0; font-family: 'JetBrains Mono', monospace; font-size: 0.95rem; color: var(--accent); letter-spacing: 0.05em; text-align: center; line-height: 2; } .pattern-diagram .flow-label { font-family: 'Inter', sans-serif; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.15em; color: var(--text-dim); margin-bottom: 0.5rem; display: block; } /* ── Capability cards ── */ .cap-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 2rem 0; } .cap-card { border: 1px solid var(--border); border-radius: 8px; padding: 1.25rem; background: var(--surface); } .cap-card .cap-label { font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; margin-bottom: 0.5rem; } .cap-card p { font-size: 1rem; margin-bottom: 0; } /* ── Two column (do / dont) ── */ .two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin: 2rem 0; } .col-card { border: 1px solid var(--border); border-radius: 8px; padding: 1.25rem; } .col-card.do-card { border-left: 3px solid var(--green); } .col-card.dont-card { border-left: 3px solid var(--rose); } .col-card .col-label { font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; margin-bottom: 0.75rem; } .col-card.do-card .col-label { color: var(--green); } .col-card.dont-card .col-label { color: var(--rose); } .col-card p { font-size: 1rem; } /* ── Era table ── */ .era-table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; } .era-table th { font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-dim); text-align: left; padding: 0.75rem 1rem; border-bottom: 2px solid var(--text); } .era-table td { padding: 0.75rem 1rem; font-size: 1.05rem; border-bottom: 1px solid var(--border); color: var(--text-dim); font-weight: 500; } .era-table td:first-child { font-family: 'JetBrains Mono', monospace; font-size: 0.9rem; font-weight: 600; color: var(--accent); white-space: nowrap; width: 140px; } /* ── Disclosure / accordion ── */ .disclosure { border: 1px solid var(--border); border-radius: 8px; margin: 1rem 0; background: var(--bg); overflow: hidden; } .disclosure-summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 1.25rem; font-family: 'Inter', sans-serif; font-weight: 600; font-size: 1.05rem; color: var(--text); background: var(--surface); transition: background 0.2s; } .disclosure-summary::-webkit-details-marker { display: none; } .disclosure-summary::after { content: '+'; font-family: 'JetBrains Mono', monospace; font-size: 1.25rem; font-weight: 500; color: var(--accent); flex-shrink: 0; line-height: 1; } .disclosure[open] .disclosure-summary::after { content: '−'; } .disclosure-summary:hover { background: var(--surface-2); } .disclosure-summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; z-index: 1; position: relative; } .disclosure-body { padding: 1.25rem 1.5rem 1.5rem; border-top: 1px solid var(--border); } .disclosure-body > p:first-child, .disclosure-body > .pattern-diagram:first-child { margin-top: 0; } .disclosure-body h3 { font-size: 1.35rem; margin-top: 0; margin-bottom: 1rem; } .disclosure-body h4 { margin-top: 1.5rem; } .disclosure-body h4:first-child { margin-top: 0; } .tool-list p { margin-bottom: 0.65rem; } .tool-list p:last-child { margin-bottom: 0; } /* ── Ideation grid ── */ .ideation-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1.5rem 0; } .ideation-item { display: flex; align-items: flex-start; gap: 1rem; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 1.25rem; } .ideation-item .ideation-num { font-family: 'Inter', sans-serif; font-size: 2rem; font-weight: 800; color: var(--accent); line-height: 1; flex-shrink: 0; } .ideation-item p { font-size: 1rem; margin: 0; } /* ── Source links ── */ a.src { color: var(--accent); text-decoration: none; border-bottom: 1px dotted var(--accent); transition: all 0.2s; font-size: inherit; } a.src:hover { color: var(--src-hover); border-bottom-color: var(--src-hover); } .stat-card a.src { font-size: 0.8rem; border-bottom: none; } .stat-card a.src:hover { text-decoration: underline; } /* ── Footer ── */ .footer { text-align: center; padding: 4rem 2rem; color: var(--text-dim); font-size: 0.9rem; font-weight: 500; } .footer .logo-text { font-family: 'Inter', sans-serif; font-size: 1.6rem; font-weight: 700; color: var(--text); margin-bottom: 0.5rem; } /* ── Theme toggle (floating segmented Light/Dark pill, injected by theme.js) ── */ .theme-toggle { position: fixed; top: 1rem; right: 1rem; z-index: 200; display: inline-flex; align-items: stretch; gap: 2px; padding: 3px; border-radius: 100px; border: 1px solid var(--border); background: var(--surface); box-shadow: 0 1px 3px rgba(0,0,0,0.08); -webkit-tap-highlight-color: transparent; } .theme-toggle__opt { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.35rem 0.75rem; border: none; border-radius: 100px; background: transparent; color: var(--text-dim); font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; cursor: pointer; transition: background 0.25s, color 0.25s; } .theme-toggle__opt:hover { color: var(--text); } .theme-toggle__opt:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; } .theme-toggle__opt svg { width: 15px; height: 15px; display: block; } /* Active segment reflects the current theme. */ :root[data-theme="light"] .theme-toggle__opt--light, :root[data-theme="dark"] .theme-toggle__opt--dark { background: var(--accent); color: var(--bg); } /* ── Responsive ── */ @media (max-width: 640px) { .stat-grid, .cap-grid, .two-col, .ideation-grid { grid-template-columns: 1fr; } section { padding: 3rem 0; } .container { padding: 0 1.25rem; } /* Move the toggle to the bottom-right so it clears the full-width sticky nav. */ .theme-toggle { top: auto; bottom: 1rem; right: 1rem; } }