/* Physical AI Competition – Nebius × Positronic. Tokens per STYLE.md. */

@font-face { font-family: 'Inter'; font-weight: 100 900; font-display: swap; src: url('fonts/inter.woff2') format('woff2'); }
@font-face { font-family: 'Hanken Grotesk'; font-weight: 100 900; font-display: swap; src: url('fonts/hanken.woff2') format('woff2'); }
@font-face { font-family: 'Space Mono'; font-weight: 400; font-display: swap; src: url('fonts/spacemono-400.woff2') format('woff2'); }
@font-face { font-family: 'Space Mono'; font-weight: 700; font-display: swap; src: url('fonts/spacemono-700.woff2') format('woff2'); }

:root {
  --lime: #e0ff4f;
  --lime-dark: #cbe93a;
  --violet: #5d52f6;
  --blue: #027bf3;
  --navy: #052b42;
  --ink: #0c0c0e;
  --ink-2: #17161a;
  --ink-line: #2a292f;
  --bg: #ffffff;
  --silver: #eff2f8;
  --text: #18191c;
  --muted: #6a6f77;
  --faint: #9aa0a9;
  --line: #e6e7ea;
  --display: "Hanken Grotesk", "Helvetica Neue", Arial, sans-serif;
  --body: "Inter", "Helvetica Neue", Arial, sans-serif;
  --mono: "Space Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  --r-card: 24px;
  --r-block: 16px;
  --r-ctrl: 12px;
  --shadow: 0 10px 30px rgba(12, 12, 14, .07);
  --ring: 0 0 0 3px rgba(93, 82, 246, .28);
  --maxw: 1120px;
  color-scheme: light;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.55 var(--body); -webkit-font-smoothing: antialiased; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: none; box-shadow: var(--ring); border-radius: 6px; }
h1, h2, h3 { font-family: var(--display); letter-spacing: -.02em; line-height: 1.1; margin: 0; }
code, pre, .mono { font-family: var(--mono); }

.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: max(20px, 4vw); }
.section { padding-block: 72px; }
.section.band { background: var(--silver); }
.eyebrow { font: 700 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 0 0 14px; }
.lead { font-size: 18px; color: var(--muted); max-width: 640px; margin: 14px 0 0; }
.section h2 { font-size: clamp(28px, 4vw, 40px); }

/* Preview ribbon */
.ribbon { background: var(--lime); color: var(--navy); font: 700 12px/1 var(--mono); text-align: center; padding: 8px 16px; letter-spacing: .04em; }

/* Nav */
.nav { background: var(--ink); color: #fff; position: sticky; top: env(safe-area-inset-top, 0px); z-index: 10; border-bottom: 1px solid var(--ink-line); }
.nav .wrap { display: flex; align-items: center; gap: 24px; min-height: 64px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 14px; }
.brand a:hover { text-decoration: none; }
.brand-nebius img { height: 30px; width: auto; display: block; }
.brand .x { color: var(--faint); font: 400 18px var(--body); }
/* The Positronic lockup as on the flyer and positronic.ro: the mark, then the name in one weight and one colour. */
.brand-pos { display: flex; align-items: center; gap: 10px; color: #f2f2f2; font: 700 19px/1 var(--body); letter-spacing: -.01em; white-space: nowrap; }
.brand-pos img { height: 38px; width: auto; display: block; }
.nav-links { display: flex; gap: 20px; margin-left: auto; align-items: center; flex-wrap: wrap; }
.nav-links a { color: #d7d8dc; font-size: 14px; }
.nav-links a[aria-current="page"]:not(.btn) { color: #fff; }
.btn { display: inline-flex; align-items: center; gap: 8px; border-radius: var(--r-ctrl); padding: 12px 20px; font: 600 15px var(--body); border: 1px solid transparent; cursor: pointer; }
.btn:hover { text-decoration: none; }
.btn-lime { background: var(--lime); color: var(--navy); }
.btn-lime:hover { background: var(--lime-dark); }
.btn-ghost { color: #fff; border-color: #3a3940; }
.btn-ghost:hover { border-color: #fff; }
.btn-dark { background: var(--ink); color: #fff; }
.btn-outline { color: var(--ink); border-color: var(--ink); }
.nav .btn { padding: 8px 14px; font-size: 14px; }
.nav .btn-lime { color: var(--navy); }

/* Updates ticker */
.ticker { background: var(--ink-2); color: #d7d8dc; border-bottom: 1px solid var(--ink-line); font-size: 14px; }
.ticker-row { display: flex; align-items: center; gap: 16px; min-height: 40px; }
.ticker-label { flex: none; font: 700 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--navy); background: var(--lime); padding: 5px 8px; border-radius: 999px; }
.ticker-viewport { flex: 1; min-width: 0; overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 24px, #000 calc(100% - 24px), transparent); }
.ticker-track { display: flex; width: max-content; animation: ticker 40s linear infinite; }
.ticker-track:hover, .ticker-track:focus-within { animation-play-state: paused; }
.ticker .group { display: flex; }
.ticker .item { white-space: nowrap; padding-right: 48px; }
.ticker .item .d { font: 700 12px var(--mono); color: var(--lime); margin-right: 10px; }
.ticker a { color: var(--lime); }
@keyframes ticker { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) {
  .ticker-viewport { overflow-x: auto; mask-image: none; }
  .ticker-track { animation: none; }
  .ticker .group[aria-hidden] { display: none; }
}

/* Hero */
.hero { background: var(--ink); color: #fff; padding-block: 40px 44px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 48px; align-items: center; }
.hero .eyebrow { color: var(--lime); }
.hero h1 { font-size: clamp(32px, 4.5vw, 48px); }
.hero .lead { color: #b9bbc2; margin-top: 12px; font-size: 17px; }
.hero-dates { display: grid; grid-template-columns: repeat(3, auto); justify-content: start; gap: 8px 28px; margin: 24px 0 0; }
.hero-dates dt { font: 700 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--faint); }
.hero-dates dd { margin: 6px 0 0; font: 600 16px/1.3 var(--display); color: #fff; }
.hero-prize { margin-top: 22px; }
.hero-prize > b { display: block; font: 700 clamp(26px, 3vw, 34px)/1.1 var(--display); color: var(--lime); }
.hero-prize .parts { display: flex; flex-wrap: wrap; gap: 4px 24px; margin-top: 8px; font: 600 16px/1.3 var(--display); color: #fff; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 26px; }
.hero-visual video { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; border-radius: var(--r-block); background: var(--ink-2); }
.board-section { padding-block: 28px 56px; }

/* Board */
.table-scroll { overflow-x: auto; margin-top: 16px; border: 1px solid var(--line); border-radius: var(--r-block); }
table.board { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 520px; }
.board th { text-align: left; font: 700 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); padding: 14px 16px; background: #fafbfc; border-bottom: 1px solid var(--line); }
.board td { padding: 11px 16px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.board tr:last-child td { border-bottom: 0; }
.board th a { color: inherit; text-decoration: underline; }
.board .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.board .rank { width: 64px; font: 700 14px var(--mono); color: var(--muted); }
.board .score { font-weight: 600; }
.board tr.baseline td { background: #fbfde9; }
.board .who { font-weight: 600; }
.board .org { color: var(--muted); font-size: 13px; font-weight: 400; }
.pill { display: inline-block; font: 700 10px/1 var(--mono); text-transform: uppercase; letter-spacing: .06em; padding: 5px 7px; border-radius: 999px; margin-left: 8px; vertical-align: 2px; }
.pill.base { background: var(--lime); color: var(--navy); }
mark.tbd { background: #ffe14d; color: var(--navy); font: 700 11px/1 var(--mono); letter-spacing: .04em; padding: 3px 6px; border-radius: 6px; white-space: nowrap; vertical-align: 1px; }
.board .dash { color: var(--faint); }
.board-foot { margin-top: 12px; font-size: 13px; color: var(--muted); }
.board.prizes .parts { display: grid; gap: 2px; }
.board.prizes tr.total td { background: #fafbfc; }

/* Timeline */
.timeline { list-style: none; margin: 36px 0 0; padding: 0; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: 0; border-top: 2px solid var(--ink); }
.timeline li { padding: 18px 16px 0 0; position: relative; }
.timeline li::before { content: ""; position: absolute; top: -7px; left: 0; width: 12px; height: 12px; border-radius: 50%; background: var(--ink); }
.timeline li.now::before { background: var(--lime); box-shadow: 0 0 0 3px var(--ink); }
.timeline .d { font: 700 13px var(--mono); }
.timeline .l { font: 600 17px/1.25 var(--display); margin-top: 6px; }
.timeline .s { color: var(--muted); font-size: 14px; margin-top: 6px; }
.timeline-foot { display: flex; justify-content: space-between; align-items: center; gap: 16px 24px; flex-wrap: wrap; margin-top: 32px; }
.timeline-foot p { margin: 0; color: var(--muted); font-size: 15px; }

/* Cards */
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-card); padding: 28px; box-shadow: var(--shadow); }
.card h3 { font-size: 24px; }
.card p { color: var(--muted); margin: 10px 0 0; }

/* FAQ */
.faq #faq { max-width: 860px; }
details { border-bottom: 1px solid var(--line); padding: 16px 0; }
details:first-of-type { margin-top: 12px; }
summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::after { content: "+"; font: 700 18px/1 var(--mono); color: var(--muted); }
details[open] summary::after { content: "–"; }
details p { color: var(--muted); margin: 10px 0 0; }

.ask { margin-top: 24px; display: flex; gap: 12px; flex-wrap: wrap; }

/* Get started / rules */
.page-head { background: var(--ink); color: #fff; padding-block: 56px; }
.page-head h1 { font-size: clamp(34px, 5vw, 52px); }
.page-head .lead { color: #b9bbc2; }
.prompt { position: relative; background: var(--ink); color: #e9eaee; border-radius: var(--r-block); padding: 22px 22px 22px; margin-top: 20px; }
.prompt pre { margin: 0; white-space: pre-wrap; word-break: break-word; font-size: 14px; line-height: 1.6; }
.copy { position: absolute; top: 12px; right: 12px; background: var(--lime); color: var(--navy); border: 0; border-radius: 8px; font: 700 12px var(--mono); padding: 8px 10px; cursor: pointer; }
.prompt pre { padding-right: 72px; }
.cmd { background: var(--silver); border-radius: var(--r-ctrl); padding: 14px 16px; overflow-x: auto; font-size: 14px; margin: 10px 0 0; }
.cmd code { white-space: pre; }
ol.manual { padding-left: 22px; margin: 20px 0 0; }
ol.manual > li { margin-bottom: 26px; }
ol.manual > li > b { font: 600 18px var(--display); }
ol.manual p { color: var(--muted); margin: 6px 0 0; }
.rules { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 28px; }
.card ul { margin: 12px 0 0; padding-left: 18px; color: var(--muted); }
.card li { margin-bottom: 6px; }
.note { font-size: 14px; color: var(--muted); margin-top: 24px; }

/* Footer */
.foot { background: var(--ink); color: #b9bbc2; padding-block: 40px; font-size: 14px; }
.foot .wrap { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.foot a { color: #fff; }
.foot .roles span { display: block; }
.foot .contact { max-width: 360px; }

@media (max-width: 860px) {
  .rules, .hero-grid { grid-template-columns: 1fr; }
  .nav .wrap { padding-top: 10px; }
  .hero-grid { gap: 28px; }
  .timeline { grid-auto-flow: row; grid-template-columns: 1fr; border-top: 0; border-left: 2px solid var(--ink); margin-left: 6px; }
  .timeline li { padding: 0 0 22px 22px; }
  .timeline li::before { top: 4px; left: -7px; }
  .nav-links { margin-left: 0; width: 100%; padding-bottom: 12px; }
  .section { padding-block: 56px; }
  .board .when { display: none; }
}

@media (max-width: 520px) {
  .brand { gap: 10px; }
  .brand-nebius img { height: 26px; }
  .brand-pos img { height: 32px; }
  .brand-pos { font-size: 17px; }
  .hero-dates { grid-template-columns: 1fr; gap: 10px; }
  .hero-dates > div { display: flex; gap: 12px; align-items: baseline; }
  .hero-dates dt { width: 64px; flex: none; }
  .hero-dates dd { margin: 0; }
  /* Each prize becomes a row card: place and total on top, the credits below. */
  table.board.prizes, .board.prizes tbody { display: block; min-width: 0; }
  .board.prizes thead { display: none; }
  .board.prizes tr { display: grid; grid-template-columns: 1fr auto; gap: 4px 16px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
  .board.prizes tr:last-child { border-bottom: 0; }
  .board.prizes td { padding: 0; border: 0; }
  .board.prizes td:nth-child(2) { grid-column: 1 / -1; grid-row: 2; color: var(--muted); font-size: 14px; }
  .board.prizes tr.total, .board.prizes tr.total td { background: #fafbfc; }
}

/* The narrowest phones: the full name must still fit beside the Nebius logo. */
@media (max-width: 360px) {
  .brand, .brand-pos { gap: 7px; }
  .brand-nebius img { height: 22px; }
  .brand-pos img { height: 27px; }
  .brand-pos { font-size: 15px; }
}

/* Terms */
.terms { max-width: 760px; }
.terms h3 { font-size: 22px; margin-top: 32px; }
.terms p, .terms li { color: var(--muted); }
.terms ul { padding-left: 18px; margin: 10px 0 0; }
.terms li { margin-bottom: 6px; }

/* Cookie consent banner, added by analytics.js. The phail.ai banner, larger. */
.cookie-banner { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); z-index: 200; width: min(760px, calc(100% - 32px)); display: flex; align-items: center; gap: 28px; padding: 28px 32px; background: var(--ink); color: #fff; border: 2px solid var(--lime); border-radius: var(--r-block); box-shadow: 0 16px 48px rgba(12, 12, 14, .35); }
.cookie-banner-text { margin: 0; flex: 1; font-size: 18px; line-height: 1.45; color: #d6d8dc; }
.cookie-banner-text strong { display: block; margin-bottom: 4px; font: 700 21px/1.25 var(--display); color: #fff; }
.cookie-banner-buttons { display: flex; gap: 12px; flex-shrink: 0; }
.cookie-btn { padding: 14px 28px; font: 600 17px/1 var(--body); border-radius: 999px; border: 1px solid transparent; cursor: pointer; transition: background .18s, color .18s, box-shadow .18s; }
.cookie-btn--decline { background: transparent; color: #d6d8dc; border-color: rgba(255, 255, 255, .3); }
.cookie-btn--decline:hover { color: #fff; border-color: rgba(255, 255, 255, .6); }
.cookie-btn--accept { background: var(--lime); color: var(--navy); }
.cookie-btn--accept:hover { background: var(--lime-dark); box-shadow: 0 4px 18px rgba(224, 255, 79, .35); }
@media (max-width: 640px) {
  .cookie-banner { bottom: 12px; flex-direction: column; align-items: stretch; text-align: center; gap: 18px; padding: 22px 20px; }
  .cookie-banner-buttons { justify-content: center; }
  .cookie-btn { flex: 1; }
}