/* Theme: follows the visitor's system setting; the header button overrides it (saved in localStorage). */
:root {
  color-scheme: dark;
  --bg: #0b0d10;
  --panel: #14181d;
  --line: #242a32;
  --text: #e8ebef;
  --muted: #8b95a1;
  --accent: #4da3ff;
  --on-accent: #04121f;
  --header-bg: rgba(11, 13, 16, .92);
  --tesla: #e5484d;
  --spacex: #7aa2ff;
  --neuralink: #b58cff;
  --xai: #d0d4d9;
  --x: #8fd3ff;
  --boring: #f5a524;
  --elon: #4da3ff;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    color-scheme: light;
    --bg: #f7f8fa;
    --panel: #ffffff;
    --line: #e1e5ea;
    --text: #14181d;
    --muted: #566170;
    --accent: #0b6fd6;
    --on-accent: #ffffff;
    --header-bg: rgba(247, 248, 250, .92);
    --tesla: #c4262b;
    --spacex: #2a58c8;
    --neuralink: #7240d0;
    --xai: #454c54;
    --x: #0a76ad;
    --boring: #a96000;
    --elon: #0b6fd6;
  }
}
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f7f8fa;
  --panel: #ffffff;
  --line: #e1e5ea;
  --text: #14181d;
  --muted: #566170;
  --accent: #0b6fd6;
  --on-accent: #ffffff;
  --header-bg: rgba(247, 248, 250, .92);
  --tesla: #c4262b;
  --spacex: #2a58c8;
  --neuralink: #7240d0;
  --xai: #454c54;
  --x: #0a76ad;
  --boring: #a96000;
  --elon: #0b6fd6;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
img { max-width: 100%; display: block; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); }

/* header */
.top { border-bottom: 1px solid var(--line); position: sticky; top: 0; background: var(--header-bg); backdrop-filter: blur(8px); z-index: 10; }
.bar { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: .2px; }
.brand:hover { text-decoration: none; }
.mark { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 6px; background: var(--accent); color: var(--on-accent); font-weight: 800; }
.main { display: flex; align-items: center; gap: 20px; font-size: 15px; color: var(--muted); }
.main a:hover { color: var(--text); }
.theme { display: grid; place-items: center; width: 34px; height: 34px; padding: 0; border: 1px solid var(--line); border-radius: 8px; background: transparent; color: var(--muted); cursor: pointer; }
.theme:hover { color: var(--text); border-color: var(--muted); }
.theme:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.subnav { border-top: 1px solid var(--line); }
.chips { display: flex; gap: 8px; overflow-x: auto; padding-top: 8px; padding-bottom: 8px; scrollbar-width: none; }
.chips::-webkit-scrollbar { display: none; }
.chips a { white-space: nowrap; font-size: 14px; padding: 4px 12px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); }
.chips a:hover { color: var(--text); border-color: var(--muted); text-decoration: none; }
.chips .chip-elon { color: var(--text); border-color: var(--elon); }

main.wrap { padding-top: 36px; padding-bottom: 56px; min-height: 60vh; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }

/* generated cover art (used when a story has no photo) */
.cover { --c: #1f6feb; display: grid; place-items: center; width: 100%; height: 100%; min-height: 100%; background: linear-gradient(135deg, var(--c), #0b0d10 135%); color: #fff; }
.cover span { font-size: clamp(22px, 4vw, 40px); font-weight: 800; letter-spacing: .04em; opacity: .85; }
.cover-elon { --c: #1f6feb; } .cover-tesla { --c: #c4262b; } .cover-spacex { --c: #2a58c8; }
.cover-neuralink { --c: #7240d0; } .cover-xai { --c: #4a5057; } .cover-x { --c: #0a76ad; } .cover-boring { --c: #c77700; }
.cover-wide { aspect-ratio: 16 / 7; border-radius: 12px; margin: 20px 0; }
.cover-wide span { font-size: clamp(36px, 8vw, 72px); }

/* home */
.intro h1 { font-size: clamp(30px, 5vw, 48px); letter-spacing: -.02em; margin-bottom: .3em; }
.intro p { color: var(--muted); max-width: 62ch; margin: 0; }
.lead { display: grid; grid-template-columns: 1.1fr 1fr; margin: 32px 0; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.lead-media { display: block; min-height: 260px; }
.lead-media img { width: 100%; height: 100%; object-fit: cover; }
.lead-text { padding: 24px; align-self: center; }
.lead h2 { font-size: clamp(22px, 3vw, 32px); margin: 8px 0; }
.lead p { color: var(--muted); margin: 0; }
.split { display: grid; grid-template-columns: 2fr 3fr; gap: 32px; align-items: start; }
.sect { font-size: 14px; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); padding-bottom: 10px; border-bottom: 1px solid var(--line); margin-bottom: 16px; }
.col-elon .sect { color: var(--elon); }
.more { display: inline-block; margin-top: 8px; color: var(--accent); font-size: 15px; }
.cogrid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.co { display: block; padding: 16px; background: var(--panel); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 10px; }
.co:hover { text-decoration: none; border-color: var(--muted); }
.co h3 { font-size: 18px; margin-bottom: 4px; }
.co p { margin: 0 0 8px; font-size: 14px; color: var(--muted); line-height: 1.45; }
.co .latest { font-size: 13px; color: var(--text); opacity: .85; }
.co-tesla { border-left-color: var(--tesla); } .co-spacex { border-left-color: var(--spacex); }
.co-neuralink { border-left-color: var(--neuralink); } .co-xai { border-left-color: var(--xai); }
.co-x { border-left-color: var(--x); } .co-boring { border-left-color: var(--boring); }

/* cards + tags */
.card { display: grid; grid-template-columns: 124px 1fr; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.card .thumb { display: block; aspect-ratio: 4 / 3; border-radius: 8px; overflow: hidden; background: var(--panel); }
.card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.card .thumb .cover span { font-size: 20px; }
.card h3 { font-size: 18px; margin: 4px 0; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.meta { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--muted); }
.dot { opacity: .5; }
.tag { font-weight: 600; text-transform: uppercase; letter-spacing: .06em; font-size: 12px; color: var(--accent); }
.tag-tesla { color: var(--tesla); } .tag-spacex { color: var(--spacex); } .tag-neuralink { color: var(--neuralink); }
.tag-xai { color: var(--xai); } .tag-x { color: var(--x); } .tag-boring { color: var(--boring); } .tag-elon { color: var(--elon); }
.badge { border: 1px solid var(--line); border-radius: 4px; padding: 0 6px; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; }

/* page header */
.pagehead { margin-bottom: 28px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.pagehead.has-img { display: grid; grid-template-columns: 1.3fr 1fr; gap: 28px; align-items: center; }
.pagehead h1 { font-size: clamp(32px, 5vw, 46px); letter-spacing: -.02em; }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: 12px; color: var(--accent); margin: 0 0 8px; }
.pagehead-tesla .eyebrow { color: var(--tesla); } .pagehead-spacex .eyebrow { color: var(--spacex); }
.pagehead-neuralink .eyebrow { color: var(--neuralink); } .pagehead-xai .eyebrow { color: var(--xai); }
.pagehead-x .eyebrow { color: var(--x); } .pagehead-boring .eyebrow { color: var(--boring); }
.lede { font-size: 19px; color: var(--muted); max-width: 66ch; }
.facts { list-style: none; padding: 0; margin: 16px 0; display: flex; flex-wrap: wrap; gap: 8px 24px; font-size: 15px; }
.facts strong { color: var(--muted); font-weight: 600; margin-right: 4px; }

/* overview + at-a-glance */
.overview { display: grid; grid-template-columns: 1.6fr 1fr; gap: 32px; align-items: start; margin-bottom: 36px; }
.overview .prose h2 { margin-top: 0; }
.glance { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; }
.glance h3 { font-size: 13px; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); margin-bottom: 10px; }
.glance ul { list-style: none; margin: 0; padding: 0; font-size: 15px; }
.glance li { padding: 8px 0; border-top: 1px solid var(--line); }
.glance li:first-child { border-top: 0; padding-top: 0; }
.count { font-size: 12px; font-weight: 500; letter-spacing: 0; text-transform: none; color: var(--muted); margin-left: 6px; }

/* photos with credit lines */
.hero-img { margin: 20px 0; }
.hero-img img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; object-position: center 35%; border-radius: 12px; background: var(--panel); }
.hero-img.side { margin: 0; }
.hero-img.side img { aspect-ratio: 4 / 3; object-position: center 25%; }
.hero-img figcaption { margin-top: 8px; font-size: 12px; color: var(--muted); line-height: 1.4; }
.hero-img figcaption a { text-decoration: underline; text-underline-offset: 2px; }

/* timeline */
.yr { font-size: 28px; color: var(--muted); margin: 28px 0 8px; }
.tl { padding: 10px 0; border-bottom: 1px solid var(--line); }
.tl > a { font-size: 18px; font-weight: 600; display: block; margin-top: 2px; }

/* article */
.story { max-width: 720px; }
.story h1 { font-size: clamp(30px, 5vw, 44px); letter-spacing: -.02em; margin: 10px 0; }
.crumbs { font-size: 14px; color: var(--muted); margin: 0 0 12px; }
.note { font-size: 14px; color: var(--muted); border: 1px solid var(--line); background: var(--panel); border-radius: 8px; padding: 10px 14px; }
.prose { max-width: 720px; }
.prose h2 { font-size: 24px; margin: 1.6em 0 .5em; }
.prose p, .prose li { margin: 0 0 1em; }
.prose a { color: var(--accent); }
.story + section { max-width: 720px; margin-top: 40px; }

/* footer */
.foot { border-top: 1px solid var(--line); padding: 28px 0 40px; font-size: 14px; color: var(--muted); }
.foot p { margin: 0 0 8px; max-width: 80ch; }

@media (max-width: 760px) {
  body { font-size: 16px; }
  .split { grid-template-columns: 1fr; }
  .cogrid { grid-template-columns: 1fr; }
  .lead { grid-template-columns: 1fr; }
  .lead-media { min-height: 0; aspect-ratio: 16 / 9; }
  .lead-text { padding: 18px; }
  .pagehead.has-img { grid-template-columns: 1fr; }
  .overview { grid-template-columns: 1fr; gap: 20px; }
  .card { grid-template-columns: 96px 1fr; gap: 12px; }
}