/* * site.css: the shared shell for every page in Deep Time. * * Responsibility: layout, typography, and all structural components that repeat * across the 16 era pages and the index (deep-time rail, hero, scene frame, * vitals grid, death timeline, survival list, uncertainty note, pager). * * It deliberately contains NO era-specific colour. Every colour is read from a * custom property (--bg, --ink, --accent, --sky-*, ...) whose value is set by * eras.css based on the `data-era` attribute on . That split is what lets * one stylesheet carry sixteen different moods without sixteen copies of the layout. * * Read alongside: assets/eras.css (the themes), assets/nav.js (injects the rail * and pager markup this file styles), eras/*.html (the markup contract). * * Constraint: no build step and no framework. Fonts are self-hosted under * assets/fonts/, so the site makes no third-party request and renders identically * offline. */ @import url('fonts.css'); /* ---- reset ---- */ *, *::before, *::after { box-sizing: border-box; } * { margin: 0; } html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; } img, svg { display: block; max-width: 100%; } a { color: inherit; } /* ---- defaults; eras.css overrides the colour half of this ---- */ :root { --bg: #08090a; --bg-raise: #101214; --ink: #e7e3d8; --ink-dim: #8e8b83; --ink-faint: #55534e; --rule: #22252a; --accent: #d8552f; --accent-2: #e8b04b; --sky-1: #101214; --sky-2: #1a1d21; --sky-3: #24282d; --display: 'Big Shoulders Display', 'Haettenschweiler', 'Arial Narrow', sans-serif; --body: 'Newsreader', Georgia, 'Times New Roman', serif; --mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace; --rail-w: 76px; --pad: clamp(1.25rem, 4vw, 4rem); --measure: 62ch; } /* ---- page ---- */ body { background: var(--bg); color: var(--ink); font-family: var(--body); font-size: clamp(1.02rem, 0.55vw + 0.92rem, 1.19rem); line-height: 1.62; font-weight: 300; padding-left: var(--rail-w); overflow-x: hidden; transition: background 600ms ease; } @media (max-width: 860px) { body { padding-left: 0; padding-bottom: 64px; } } /* Film grain. Sits above everything, ignores pointer events. Kept very low opacity, it should register as texture, never as noise. */ body::after { content: ''; position: fixed; inset: -50%; pointer-events: none; z-index: 90; opacity: 0.035; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)'/%3E%3C/svg%3E"); } ::selection { background: var(--accent); color: var(--bg); } /* ---- deep-time rail (injected by nav.js) ---- */ .rail { position: fixed; left: 0; top: 0; bottom: 0; width: var(--rail-w); border-right: 1px solid var(--rule); background: color-mix(in srgb, var(--bg) 86%, #000); display: flex; flex-direction: column; z-index: 80; } .rail__home { font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.16em; text-transform: uppercase; text-decoration: none; color: var(--ink-dim); padding: 1.1rem 0; text-align: center; border-bottom: 1px solid var(--rule); transition: color 200ms; } .rail__home:hover { color: var(--accent); } .rail__list { flex: 1; display: flex; flex-direction: column; overflow: hidden; } .rail__item { flex: 1; display: flex; align-items: center; justify-content: center; position: relative; text-decoration: none; font-family: var(--mono); font-size: 0.62rem; font-weight: 500; color: var(--ink-faint); border-bottom: 1px solid color-mix(in srgb, var(--rule) 50%, transparent); transition: color 180ms, background 180ms; } .rail__item:hover { color: var(--ink); background: color-mix(in srgb, var(--ink) 6%, transparent); } .rail__item[aria-current='page'] { color: var(--bg); background: var(--accent); font-weight: 600; } /* Name slides out on hover instead of living permanently in a 76px column. */ .rail__item span { position: absolute; left: 100%; padding: 0.3rem 0.7rem; background: var(--accent); color: var(--bg); font-size: 0.6rem; letter-spacing: 0.12em; text-transform: uppercase; white-space: nowrap; opacity: 0; transform: translateX(-6px); transition: opacity 160ms, transform 160ms; pointer-events: none; } .rail__item:hover span { opacity: 1; transform: translateX(0); } @media (max-width: 860px) { .rail { top: auto; right: 0; width: auto; height: 56px; flex-direction: row; border-right: 0; border-top: 1px solid var(--rule); } .rail__home { padding: 0 0.9rem; display: flex; align-items: center; border-bottom: 0; border-right: 1px solid var(--rule); } .rail__list { flex-direction: row; } .rail__item { border-bottom: 0; border-right: 1px solid color-mix(in srgb, var(--rule) 50%, transparent); } .rail__item span { display: none; } } /* ---- shared shell ---- */ .wrap { max-width: 1180px; margin: 0 auto; padding: 0 var(--pad); } .narrow { max-width: var(--measure); } .eyebrow { font-family: var(--mono); font-size: 0.66rem; font-weight: 500; letter-spacing: 0.24em; text-transform: uppercase; color: var(--ink-dim); } h2.section-title { font-family: var(--display); font-weight: 800; font-size: clamp(1.9rem, 3.4vw, 3rem); line-height: 0.95; letter-spacing: 0.005em; text-transform: uppercase; margin-bottom: 1.6rem; } section { padding-block: clamp(3.5rem, 8vw, 7rem); } section + section { border-top: 1px solid var(--rule); } /* ---- hero ---- */ .hero { padding-top: clamp(3rem, 9vh, 6rem); padding-bottom: clamp(2rem, 5vw, 3.5rem); } .hero__meta { display: flex; flex-wrap: wrap; gap: 0.6rem 1.6rem; align-items: baseline; margin-bottom: 1.2rem; } .hero__num { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.2em; color: var(--accent); } .hero__name { font-family: var(--display); font-weight: 900; font-size: clamp(4.2rem, 17vw, 15rem); line-height: 0.82; letter-spacing: -0.005em; text-transform: uppercase; /* Optical margin: the condensed caps carry a little left sidebearing. */ margin-left: -0.02em; } .hero__dates { font-family: var(--mono); font-size: clamp(0.78rem, 1.4vw, 0.95rem); color: var(--ink-dim); letter-spacing: 0.06em; margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--rule); } .hero__lede { font-size: clamp(1.15rem, 1.6vw, 1.45rem); line-height: 1.5; font-weight: 200; max-width: 46ch; margin-top: 2rem; color: color-mix(in srgb, var(--ink) 88%, var(--bg)); } /* The verdict block. This is the one thing a reader should remember per page. */ .verdict { margin-top: clamp(2.5rem, 6vw, 4rem); display: grid; grid-template-columns: auto 1fr; gap: 0 1.8rem; align-items: end; } .verdict__label { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--ink-dim); grid-column: 1 / -1; margin-bottom: 0.7rem; } .verdict__value { font-family: var(--display); font-weight: 900; font-size: clamp(3rem, 10vw, 8rem); line-height: 0.8; text-transform: uppercase; color: var(--accent); grid-column: 1 / -1; } .verdict__note { grid-column: 1 / -1; margin-top: 1.1rem; font-family: var(--mono); font-size: 0.96rem; line-height: 1.7; color: var(--ink-dim); max-width: 54ch; } /* ---- era scene (generated image per page) ---- */ .scene { position: relative; margin-top: clamp(2.5rem, 6vw, 4.5rem); border: 1px solid var(--rule); background: var(--sky-1); overflow: hidden; } .scene svg, .scene img { width: 100%; height: auto; display: block; } .scene__cap { position: absolute; left: 0; bottom: 0; padding: 0.55rem 0.9rem; background: color-mix(in srgb, var(--bg) 78%, transparent); backdrop-filter: blur(6px); font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.13em; text-transform: uppercase; color: var(--ink-dim); border-top: 1px solid var(--rule); border-right: 1px solid var(--rule); } /* ---- vitals ---- */ .vitals { display: grid; grid-template-columns: repeat(auto-fit, minmax(268px, 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); } .vital { background: var(--bg); padding: 1.4rem 1.5rem 1.5rem; display: flex; flex-direction: column; gap: 0.55rem; } .vital__k { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-dim); } .vital__v { font-family: var(--display); font-weight: 800; font-size: clamp(1.7rem, 2.6vw, 2.3rem); line-height: 1; letter-spacing: 0.01em; } .vital__v small { font-family: var(--mono); font-weight: 400; font-size: 0.62rem; letter-spacing: 0.1em; color: var(--ink-dim); margin-left: 0.45rem; text-transform: uppercase; } .vital__note { font-family: var(--mono); font-size: 0.88rem; line-height: 1.55; color: var(--ink-faint); } /* Comparison meter: the filled bar is this era, the tick is today's value. --pct (0-100) is the era value, --now (0-100) is where modern Earth sits. */ .meter { position: relative; height: 4px; background: color-mix(in srgb, var(--ink) 12%, transparent); margin-top: 0.15rem; margin-bottom: 0.7rem; } .meter__fill { position: absolute; inset: 0 auto 0 0; width: calc(var(--pct, 0) * 1%); background: var(--accent); } .meter__now { position: absolute; top: -4px; bottom: -4px; left: calc(var(--now, 0) * 1%); width: 1px; background: var(--ink); } /* Caption hangs below the bar. Above it would collide with the value's inline , which sits on the same baseline band at every card width. */ .meter__now::after { content: 'now'; position: absolute; top: calc(100% + 2px); left: 50%; transform: translateX(-50%); font-family: var(--mono); font-size: 0.52rem; letter-spacing: 0.1em; color: var(--ink-dim); } .vital--danger .meter__fill { background: var(--accent-2); } /* ---- death timeline ---- */ .clock { border-left: 1px solid var(--rule); margin-left: 0.4rem; } .beat { position: relative; padding: 0 0 2.2rem 2rem; } .beat:last-child { padding-bottom: 0; } .beat::before { content: ''; position: absolute; left: -4.5px; top: 0.5rem; width: 8px; height: 8px; background: var(--bg); border: 1px solid var(--accent); border-radius: 50%; } .beat--fatal::before { background: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent); } .beat__t { font-family: var(--mono); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.1em; color: var(--accent); display: block; margin-bottom: 0.3rem; } .beat__h { font-family: var(--display); font-weight: 700; font-size: 1.5rem; line-height: 1.05; text-transform: uppercase; letter-spacing: 0.01em; } .beat p { max-width: var(--measure); margin-top: 0.45rem; color: color-mix(in srgb, var(--ink) 82%, var(--bg)); } /* ---- survival cards ---- */ .kit { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem; } .kit__item { border-top: 2px solid var(--accent); padding-top: 1rem; } .kit__item h3 { font-family: var(--mono); font-size: 0.66rem; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-dim); margin-bottom: 0.5rem; } .kit__item p { font-size: 0.98rem; } .kit__item--none { border-top-color: var(--ink-faint); opacity: 0.72; } /* ---- uncertainty ---- */ /* Distinguished by a raised background, not a left accent bar. */ .caveat { border: 1px solid var(--rule); padding: 1.5rem 1.6rem; background: var(--bg-raise); font-family: var(--mono); font-size: 0.78rem; line-height: 1.75; color: var(--ink-dim); max-width: 74ch; } .caveat strong { color: var(--ink); font-weight: 600; } .caveat + .caveat { margin-top: 1rem; } /* ---- pager (injected by nav.js) ---- */ .pager { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--rule); border-top: 1px solid var(--rule); } .pager__link { background: var(--bg); padding: clamp(1.8rem, 4vw, 3rem) var(--pad); text-decoration: none; display: block; transition: background 200ms; } .pager__link:hover { background: var(--bg-raise); } .pager__link--next { text-align: right; } .pager__dir { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-dim); } .pager__name { font-family: var(--display); font-weight: 800; font-size: clamp(1.8rem, 4vw, 3rem); line-height: 1; text-transform: uppercase; margin-top: 0.4rem; } .pager__verdict { font-family: var(--mono); font-size: 0.68rem; color: var(--accent); letter-spacing: 0.08em; margin-top: 0.35rem; } .pager__empty { background: var(--bg); } .foot { padding: 2.5rem var(--pad) 3.5rem; font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.1em; color: var(--ink-faint); border-top: 1px solid var(--rule); display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; justify-content: space-between; } .foot a { color: var(--ink-dim); text-decoration: none; border-bottom: 1px solid var(--rule); } .foot a:hover { color: var(--accent); border-color: var(--accent); } /* ---- entrance: one orchestrated load, staggered by depth ---- */ @keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } } .hero > .wrap > * { animation: rise 800ms cubic-bezier(.2,.7,.2,1) backwards; } .hero > .wrap > *:nth-child(1) { animation-delay: 60ms; } .hero > .wrap > *:nth-child(2) { animation-delay: 140ms; } .hero > .wrap > *:nth-child(3) { animation-delay: 220ms; } .hero > .wrap > *:nth-child(4) { animation-delay: 320ms; } .hero > .wrap > *:nth-child(5) { animation-delay: 440ms; } @media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; } html { scroll-behavior: auto; } } /* ---- section figures: menu and kills ---- The hero is 21:9 and full width; these two are 3:2 and sit beside their section's text so they read as evidence rather than as second heroes. The figure is sticky because the death timeline is much taller than the image - without it you scroll past the picture in the first beat and read the remaining five with nothing on screen. */ .split { display: grid; grid-template-columns: minmax(0, 41%) minmax(0, 1fr); gap: clamp(1.6rem, 4vw, 3.5rem); align-items: start; } .split__fig { position: sticky; top: clamp(1rem, 5vh, 3rem); } .split__fig img { width: 100%; height: auto; border: 1px solid var(--rule); } .split__fig figcaption { font-family: var(--mono); font-size: 0.78rem; line-height: 1.65; color: var(--ink-dim); margin-top: 0.75rem; padding-left: 0.7rem; border-left: 1px solid var(--rule); } /* Inside a split the kit grid has half the room, so let it fall to two columns rather than squeezing three. */ .split .kit { grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 1.3rem; } @media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 1.8rem; } /* Sticky is wrong once the figure is stacked above its text: it would pin the image to the top and let the words scroll out from under it. */ .split__fig { position: static; } } /* ---- lightbox ---- Native