/* MUGVN Hackathon 2026 — shared styles
   Palette grounded in partner brands: MongoDB slate/forest/spring green blended with Datadog purple and magenta. */
:root {
  /* MongoDB */
  --ink: #001E2B;        /* slate */
  --green: #00684A;      /* forest */
  --spring: #00ED64;     /* spring green */
  --mint: #EEF7F1;
  /* Datadog */
  --violet: #632CA6;     /* Datadog purple */
  --violet-deep: #2A0F4F;
  --violet-soft: #F3EDFA;
  --magenta: #E3268F;
  /* Neutrals */
  --ink-2: #102A45;
  --paper: #FBFCFB;
  --paper-2: var(--violet-soft);
  --line: #D6D9E0;
  --muted: #4B5670;
  --amber: var(--magenta);
  --duo: linear-gradient(90deg, var(--spring) 0 50%, var(--violet) 50% 100%);
  --radius-s: 6px;
  --radius-l: 14px;
  --wrap: 1120px;
  --font: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
a { color: var(--green); text-underline-offset: 3px; }
a:hover { color: var(--ink); }
:focus-visible { outline: 3px solid var(--violet); outline-offset: 3px; border-radius: 4px; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(0, 30, 43, 0.96);
  backdrop-filter: blur(8px);
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.site-header .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { color: #fff; text-decoration: none; font-weight: 700; font-size: 16px; letter-spacing: -0.01em; white-space: nowrap; }
.brand span { color: rgba(255,255,255,0.45); font-weight: 400; margin: 0 6px; }
.nav { margin-left: auto; display: flex; align-items: center; gap: 22px; }
.nav a { color: rgba(255,255,255,0.78); text-decoration: none; font-size: 15px; white-space: nowrap; }
.nav a:hover { color: #fff; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid rgba(255,255,255,0.3); color: #fff; border-radius: var(--radius-s); padding: 6px 12px; font: inherit; font-size: 14px; cursor: pointer; }

.btn {
  display: inline-block; text-decoration: none; font-weight: 600; font-size: 15px;
  padding: 11px 20px; border-radius: 999px; border: 2px solid transparent; cursor: pointer;
  transition: background-color .15s, color .15s;
}
.btn-primary { background: var(--spring); color: var(--ink); }
.btn-primary:hover { background: #fff; color: var(--ink); }
.btn-ghost { border-color: #B79BE0; color: #fff; }
.btn-ghost:hover { background: var(--violet); border-color: var(--violet); color: #fff; }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--violet); color: #fff; }
.btn-violet { background: var(--violet); color: #fff; }
.btn-violet:hover { background: var(--violet-deep); color: #fff; }
.nav .btn { padding: 8px 16px; font-size: 14px; color: var(--ink); }

/* ---------- Hero ---------- */
.hero {
  position: relative; color: #fff; padding: 72px 0 80px; overflow: hidden; isolation: isolate;
  background:
    radial-gradient(55% 75% at 100% 0%, rgba(99,44,166,0.55) 0%, rgba(99,44,166,0) 70%),
    radial-gradient(45% 65% at 0% 100%, rgba(0,237,100,0.16) 0%, rgba(0,237,100,0) 70%),
    radial-gradient(35% 50% at 60% 110%, rgba(227,38,143,0.14) 0%, rgba(227,38,143,0) 70%),
    var(--ink);
}
/* Faint dashboard dot-grid, fading out toward the text side */
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image: radial-gradient(rgba(255,255,255,0.10) 1px, transparent 1.2px);
  background-size: 24px 24px;
  -webkit-mask-image: linear-gradient(100deg, transparent 20%, #000 75%);
          mask-image: linear-gradient(100deg, transparent 20%, #000 75%);
}
.hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 4px; background: var(--duo); }
.hero .wrap { position: relative; z-index: 1; }
.hero > .wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: stretch; }
.hero > .wrap > div:first-child { display: flex; flex-direction: column; justify-content: center; }
.nowrap { white-space: nowrap; }
.hero-kicker { font-size: 18px; font-weight: 600; color: var(--spring); margin: 0 0 12px; letter-spacing: -0.005em; }
.hero-hosts { font-size: 15px; color: rgba(255,255,255,0.7); margin: 0 0 18px; }
.hero-hosts strong { color: #fff; font-weight: 600; }
.hero h1 {
  font-size: clamp(42px, 5.2vw, 64px); line-height: 1.04; letter-spacing: -0.035em;
  font-weight: 800; margin: 0 0 18px;
  background: linear-gradient(100deg, #FFFFFF 0%, #C8F7DA 45%, #DCC8F5 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-theme { font-size: 19px; line-height: 1.5; color: rgba(255,255,255,0.82); margin: 0 0 32px; max-width: 34ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 40px; }
.hero-facts { display: grid; grid-template-columns: repeat(3, auto); gap: 8px 32px; margin: 0; justify-content: start; }
.hero-facts dt { font-size: 13px; color: rgba(255,255,255,0.55); }
.hero-facts dd { margin: 0; font-weight: 600; font-size: 17px; }

/* Monitor panel — the one bold element */
.monitor {
  background: rgba(0, 30, 43, 0.72); border: 1px solid rgba(183, 155, 224, 0.28);
  backdrop-filter: blur(6px);
  border-radius: var(--radius-l); padding: 20px 20px 18px;
  display: flex; flex-direction: column; justify-content: space-between; gap: 8px;
}
.monitor-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 10px; }
.monitor-title { font-size: 14px; color: rgba(255,255,255,0.75); }
.monitor-status {
  font-family: var(--mono); font-size: 12px; font-weight: 500;
  padding: 4px 10px; border-radius: 999px;
  background: rgba(0,237,100,0.14); color: var(--spring);
  transition: background-color .2s, color .2s;
}
.monitor-status.is-alert { background: rgba(227,38,143,0.2); color: #FF7DC0; }
.monitor svg { display: block; width: 100%; height: auto; }
.monitor-log { font-family: var(--mono); font-size: 12px; color: rgba(255,255,255,0.55); min-height: 18px; margin-top: 8px; }
.countdown { margin-top: 18px; display: flex; align-items: baseline; flex-wrap: wrap; gap: 6px 14px; }
.countdown-label { font-size: 14px; color: rgba(255,255,255,0.65); }
.countdown-value { font-family: var(--mono); font-size: 22px; font-weight: 500; color: #fff; }

/* ---------- Sections ---------- */
.section { padding: 88px 0; }
.section-alt { background: var(--violet-soft); }
.section-mint { background: var(--mint); }
.section h2::before { content: ""; display: block; width: 56px; height: 5px; border-radius: 3px; background: var(--duo); margin-bottom: 18px; }
.section h2 { font-size: clamp(30px, 4vw, 42px); line-height: 1.12; letter-spacing: -0.025em; margin: 0 0 16px; font-weight: 800; }
.lead { font-size: 19px; color: var(--muted); max-width: 64ch; margin: 0 0 40px; }
h3 { font-size: 20px; line-height: 1.3; margin: 0 0 8px; letter-spacing: -0.01em; }
.note { font-size: 15px; color: var(--muted); }
.tba { display: inline-block; font-size: 13px; font-weight: 600; color: var(--violet); background: var(--violet-soft); padding: 2px 10px; border-radius: 999px; }

/* Theme: detect → investigate → respond (a real sequence) */
.loop { list-style: none; padding: 0; margin: 0 0 40px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 3px solid; border-image: linear-gradient(90deg, var(--green), var(--violet)) 1; }
.loop li { padding: 22px 24px 4px 0; }
.loop li + li { padding-left: 24px; border-left: 1px solid var(--line); }
.loop li:nth-child(2) .step { color: #3C4FA0; }
.loop li:nth-child(3) .step { color: var(--violet); }
.loop .step { font-family: var(--mono); font-size: 13px; color: var(--green); display: block; margin-bottom: 6px; }
.loop p { margin: 0; color: var(--muted); }
.examples { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 12px 0 0; list-style: none; }
.examples li { background: var(--mint); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; font-size: 15px; }

/* Requirements */
.reqs { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.req { background: #fff; border-radius: var(--radius-l); padding: 28px; border-top: 6px solid var(--green); }
.req.dd { border-top-color: var(--violet); }
.req h3 { font-size: 24px; }
.req h4 { font-size: 15px; margin: 22px 0 8px; color: var(--muted); font-weight: 600; }
.req ul { margin: 0; padding-left: 20px; }
.req li { margin-bottom: 6px; }
.req code { font-family: var(--mono); font-size: 14px; background: var(--paper-2); padding: 1px 6px; border-radius: 4px; }

/* Timeline */
.timeline { list-style: none; margin: 0; padding: 0; max-width: 780px; }
.timeline li { display: grid; grid-template-columns: 150px 24px 1fr; gap: 0 18px; }
.timeline .date { font-family: var(--mono); font-size: 14px; color: var(--muted); padding-top: 3px; text-align: right; }
.timeline .rail { position: relative; }
.timeline .rail::before { content: ""; position: absolute; left: 11px; top: 0; bottom: 0; width: 2px; background: linear-gradient(180deg, var(--green), var(--violet)); opacity: .45; }
.timeline li:first-child .rail::before { top: 10px; }
.timeline li:last-child .rail::before { bottom: auto; height: 10px; }
.timeline .rail::after { content: ""; position: absolute; left: 5px; top: 6px; width: 14px; height: 14px; border-radius: 50%; background: var(--paper); border: 2px solid var(--muted); }
.timeline .body { padding-bottom: 28px; }
.timeline .body p { margin: 0; color: var(--muted); }
.timeline li.is-past .rail::after { background: var(--violet); border-color: var(--violet); }
.timeline li.is-past .body h3, .timeline li.is-past .date { opacity: .6; }
.timeline li.is-current .rail::after { background: var(--spring); border-color: var(--green); box-shadow: 0 0 0 5px rgba(0,237,100,0.25); }
.timeline li.is-current .date { color: var(--green); font-weight: 500; }
.now-tag { font-size: 12px; font-weight: 600; background: var(--ink); color: var(--spring); padding: 2px 8px; border-radius: 999px; margin-left: 8px; vertical-align: 2px; }

/* Workshops */
.speakers { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.speaker { display: grid; grid-template-columns: 72px 1fr; gap: 18px; align-items: start; background: #fff; border-radius: var(--radius-l); padding: 24px; }
.avatar { width: 72px; height: 72px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; font-size: 22px; color: #fff; background: var(--green); }
.speaker.dd .avatar { background: var(--violet); }
.speaker p { margin: 4px 0 0; color: var(--muted); font-size: 15px; }

/* Prizes */
.podium { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 20px; align-items: end; margin-bottom: 28px; }
.prize { background: linear-gradient(150deg, var(--ink) 0%, #1A1446 60%, var(--violet-deep) 100%); color: #fff; border-radius: var(--radius-l); padding: 28px 24px; border: 1px solid rgba(183,155,224,0.25); }
.prize.first { padding-top: 48px; }
.prize.first .amount { color: var(--spring); font-size: 52px; }
.prize .rank { font-size: 15px; color: rgba(255,255,255,0.7); }
.prize .amount { color: #D9C6F2; font-size: 38px; font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; margin: 6px 0 0; }
.prize .amount small { font-size: 18px; font-weight: 600; margin-left: 4px; }
.perks { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.perk.mdb { border-top: 5px solid var(--green); }
.perk.dd { border-top: 5px solid var(--violet); }
.perk { border: 1px solid var(--line); border-radius: var(--radius-l); padding: 22px 24px; background: #fff; }
.perk p { margin: 0; color: var(--muted); font-size: 15px; }

/* Submission & criteria */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li { padding: 10px 0 10px 32px; border-bottom: 1px solid var(--line); position: relative; }
.checklist li::before { content: ""; position: absolute; left: 2px; top: 16px; width: 14px; height: 14px; border: 2px solid var(--green); border-radius: 4px; }
.checklist li:nth-child(even)::before { border-color: var(--violet); }
.criteria { list-style: none; padding: 0; margin: 0; counter-reset: c; }
.criteria li { padding: 10px 0; border-bottom: 1px solid var(--line); }

/* FAQ */
.faq { max-width: 820px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 18px 40px 18px 0; font-weight: 600; font-size: 18px; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 14px; font-size: 24px; font-weight: 400; color: var(--violet); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0 0 20px; color: var(--muted); max-width: 70ch; }

/* Closing CTA */
.closing { position: relative; overflow: hidden; background: linear-gradient(115deg, var(--violet-deep) 0%, #1A1446 40%, var(--ink) 100%); color: #fff; padding: 88px 0; }
.closing::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 4px; background: var(--duo); }
.closing h2 { color: #fff; font-size: clamp(30px, 4vw, 42px); line-height: 1.12; letter-spacing: -0.025em; margin: 0 0 16px; font-weight: 800; }
.closing p { color: rgba(255,255,255,0.75); max-width: 56ch; }

/* Footer */
.site-footer { background: #00131C; color: rgba(255,255,255,0.6); padding: 32px 0; font-size: 14px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 28px; align-items: center; justify-content: space-between; }
.site-footer a { color: rgba(255,255,255,0.8); margin-right: 18px; }
.site-footer a:hover { color: #fff; }

/* Partners strip — pure white so the purple Datadog logo sits on white per brand guidelines */
.partners { background: #fff; border-bottom: 1px solid var(--line); padding: 28px 0 8px; }
.partners .wrap { display: grid; grid-template-columns: 1fr 2fr; align-items: start; gap: 8px 48px; }
.sponsor-row { display: flex; flex-wrap: wrap; align-items: center; gap: 0 56px; }
.mdb-logo { display: block; padding: 24px 0; line-height: 0; }
.mdb-logo img { width: 250px; height: auto; display: block; }
.partner-role { display: block; font-size: 14px; color: var(--muted); }
.partner-body { min-height: 136px; display: flex; align-items: center; }
.partner-word { font-size: 22px; font-weight: 700; letter-spacing: -0.015em; }
/* Clearspace: 30px ≈ cap height of "D" at 300px width */
.dd-logo { display: block; padding: 30px; margin-left: -30px; line-height: 0; }
.dd-logo img { width: 300px; min-width: 300px; height: auto; display: block; }
@media (max-width: 900px) {
  .partners .wrap { grid-template-columns: 1fr; }
  .partner-body { min-height: 0; padding: 6px 0 18px; }
  .partner:last-child .partner-body { padding: 0; }
}

/* ---------- Terms page ---------- */
.terms-hero { position: relative; background: linear-gradient(115deg, var(--ink) 0%, var(--ink) 45%, var(--violet-deep) 100%); color: #fff; padding: 56px 0 48px; }
.terms-hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 4px; background: var(--duo); }
.terms-hero h1 { font-size: clamp(34px, 5vw, 52px); letter-spacing: -0.03em; line-height: 1.08; margin: 0 0 10px; }
.terms-hero p { color: rgba(255,255,255,0.72); margin: 0; }
.terms-layout { display: grid; grid-template-columns: 240px 1fr; gap: 56px; padding: 56px 0 88px; }
.toc { position: sticky; top: 88px; align-self: start; font-size: 14px; }
.toc ol { padding-left: 20px; margin: 0; }
.toc li { margin-bottom: 6px; color: var(--muted); }
.toc a { color: var(--muted); text-decoration: none; }
.toc a:hover { color: var(--green); }
.terms { max-width: 72ch; }
.terms .callout { background: #fff; border-left: 4px solid var(--violet); padding: 16px 20px; border-radius: 0 var(--radius-s) var(--radius-s) 0; margin-bottom: 40px; }
.terms section { margin-bottom: 44px; }
.terms h2 { font-size: 26px; letter-spacing: -0.02em; margin: 0 0 14px; padding-top: 10px; border-top: 2px solid; border-image: linear-gradient(90deg, var(--green), var(--violet)) 1; }
.terms h2 .num { font-family: var(--mono); font-size: 16px; color: var(--green); margin-right: 10px; font-weight: 500; }
.terms h3 { font-size: 17px; margin: 22px 0 8px; }
.terms ul, .terms ol { padding-left: 22px; }
.terms li { margin-bottom: 8px; }
.terms table { border-collapse: collapse; width: 100%; font-size: 15px; }
.terms th, .terms td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.terms th { font-weight: 600; }
.table-scroll { overflow-x: auto; }

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .hero .wrap, .reqs, .speakers, .split, .perks { grid-template-columns: 1fr; }
  .hero .wrap { gap: 40px; }
  .podium { grid-template-columns: 1fr; }
  .prize.first { padding-top: 28px; }
  .terms-layout { grid-template-columns: 1fr; gap: 24px; }
  .toc { position: static; }
}
@media (max-width: 900px) {
  .nav-toggle { display: inline-block; }
  .nav { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; align-items: flex-start; gap: 14px; background: var(--ink); padding: 18px 24px 24px; border-bottom: 1px solid rgba(255,255,255,0.1); }
  .nav.is-open { display: flex; }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  .loop { grid-template-columns: 1fr; }
  .loop li + li { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); }
  .timeline li { grid-template-columns: 24px 1fr; }
  .timeline .date { grid-column: 2; text-align: left; padding-top: 0; }
  .timeline .rail { grid-row: 1 / span 2; grid-column: 1; }
  .timeline .body { grid-column: 2; }
  .hero-facts { grid-template-columns: repeat(2, auto); }
  .section { padding: 64px 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}