:root {
  --ink: #ecf0e8;
  --muted: #9ca7a5;
  --night: #07141b;
  --panel: #0d2029;
  --panel-soft: #112934;
  --line: #29414a;
  --cyan: #5de0e6;
  --orange: #ff6b35;
  --yellow: #f5c542;
  --green: #7ef29a;
  --red: #ff5964;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { background: var(--night); color: var(--ink); font-family: var(--sans); scroll-behavior: smooth; }
body { margin: 0; min-height: 100vh; position: relative; }
a { color: inherit; }
button, input { font: inherit; }
button { color: inherit; }

.blueprint-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.22;
  z-index: -1;
  background-image: linear-gradient(rgba(93, 224, 230, 0.055) 1px, transparent 1px), linear-gradient(90deg, rgba(93, 224, 230, 0.055) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(to bottom, black, transparent 75%);
}

.site-header {
  min-height: 78px;
  padding: 0 5vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 20, 27, 0.88);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.wordmark { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font-weight: 700; letter-spacing: -0.02em; }
.wordmark b { color: var(--cyan); font-family: var(--mono); font-size: 0.8em; letter-spacing: 0.08em; }
.wordmark-mark { width: 36px; height: 36px; border: 2px solid var(--cyan); display: grid; place-items: center; font-family: var(--mono); color: var(--cyan); transform: rotate(-3deg); }
.site-header nav { display: flex; align-items: center; gap: 24px; font-size: 0.88rem; }
.site-header nav a { text-decoration: none; color: var(--muted); }
.site-header nav a:hover { color: var(--cyan); }
.site-header nav form { margin: 0; }
.nav-button { background: transparent; border: 1px solid var(--line); padding: 8px 12px; cursor: pointer; }
.nav-button:hover { border-color: var(--cyan); }

main { width: min(1180px, 90vw); margin: 0 auto; padding: 70px 0 100px; }
footer { width: min(1180px, 90vw); margin: 0 auto; padding: 28px 0; border-top: 1px solid var(--line); display: flex; justify-content: space-between; color: var(--muted); font: 0.7rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; }

h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 24px; font-size: clamp(2.8rem, 7vw, 6.7rem); line-height: 0.94; letter-spacing: -0.065em; }
h1 em { color: var(--cyan); font-style: normal; }
h2 { margin-bottom: 14px; font-size: clamp(1.4rem, 3vw, 2rem); letter-spacing: -0.035em; }
p { line-height: 1.65; color: #bdc7c5; }
.eyebrow { margin-bottom: 18px; color: var(--orange); font: 700 0.72rem var(--mono); letter-spacing: 0.13em; text-transform: uppercase; }
.fine-print { margin: 14px 0 0; color: var(--muted); font-size: 0.78rem; }
.hero-copy { max-width: 690px; font-size: 1.18rem; }

.hero.landing { min-height: 70vh; display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(310px, 0.7fr); gap: 8vw; align-items: center; }
.event-ticket { position: relative; background: #e7e2d2; color: #102128; padding: 38px; transform: rotate(1.2deg); box-shadow: 16px 18px 0 rgba(0, 0, 0, 0.2); }
.event-ticket::before { content: ""; position: absolute; left: 18px; right: 18px; top: 18px; bottom: 18px; border: 1px dashed #7e877e; pointer-events: none; }
.event-ticket h2 { font-size: 2.25rem; line-height: 0.95; margin-bottom: 30px; }
.ticket-label { color: #b33d1c; font: 700 0.72rem var(--mono); text-transform: uppercase; letter-spacing: 0.12em; }
.event-ticket dl { margin: 0; }
.event-ticket dl div { display: grid; grid-template-columns: 80px 1fr; border-top: 1px solid #b8b5a8; padding: 12px 0; }
.event-ticket dt { font: 0.66rem var(--mono); text-transform: uppercase; color: #68736f; }
.event-ticket dd { margin: 0; font-weight: 700; font-size: 0.83rem; }
.dev-login { margin-top: 28px; border-top: 2px solid #102128; padding-top: 18px; position: relative; z-index: 1; }
.dev-login label { display: block; font: 0.65rem var(--mono); text-transform: uppercase; margin-bottom: 8px; }
.inline-form { display: flex; }
.inline-form input { width: 100%; min-width: 0; border: 1px solid #87928c; background: transparent; padding: 10px; color: #102128; }
.inline-form button { border: 0; background: #102128; color: white; cursor: pointer; }

.button { display: inline-flex; justify-content: center; align-items: center; gap: 18px; min-height: 48px; padding: 12px 20px; border: 1px solid transparent; text-decoration: none; font: 700 0.78rem var(--mono); letter-spacing: 0.04em; cursor: pointer; text-transform: uppercase; }
.button.primary { color: #07141b; background: var(--cyan); box-shadow: 5px 5px 0 #1a6069; }
.button.primary:hover { transform: translate(2px, 2px); box-shadow: 3px 3px 0 #1a6069; }
.button.secondary { background: transparent; border-color: var(--cyan); color: var(--cyan); }
.button.secondary:hover { background: rgba(93, 224, 230, 0.08); }
.button.danger { background: rgba(255, 89, 100, 0.12); border-color: var(--red); color: var(--red); }
.button.disabled, .button:disabled { color: #677579; border-color: #34464b; background: #14242a; cursor: not-allowed; box-shadow: none; }
.button.wide { width: 100%; }
.button-row { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.text-link { display: inline-block; margin-top: 22px; color: var(--cyan); font: 0.76rem var(--mono); }

.narrow-panel { max-width: 620px; margin: 5vh auto; padding: 50px; border: 1px solid var(--line); background: var(--panel); }
.narrow-panel h1 { font-size: clamp(2.4rem, 6vw, 4.8rem); }
.narrow-panel.center { text-align: center; }
.stacked-form { display: grid; gap: 11px; margin-top: 28px; }
.stacked-form label { font: 0.68rem var(--mono); color: var(--cyan); text-transform: uppercase; letter-spacing: 0.08em; }
.stacked-form input { width: 100%; padding: 15px; border: 1px solid var(--line); background: #07171e; color: var(--ink); outline: none; font-family: var(--mono); }
.stacked-form input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(93, 224, 230, 0.1); }
.stacked-form small { color: var(--muted); }

.challenge-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; margin-bottom: 50px; }
.challenge-header h1 { font-size: clamp(2.7rem, 6vw, 5.7rem); margin-bottom: 0; }
.phase-card { min-width: 180px; display: flex; align-items: center; gap: 13px; border: 1px solid var(--line); background: var(--panel); padding: 16px; }
.phase-card small { display: block; color: var(--muted); font: 0.62rem var(--mono); text-transform: uppercase; }
.phase-card strong { display: block; margin-top: 4px; font: 700 0.85rem var(--mono); text-transform: uppercase; }
.status-light { width: 11px; height: 11px; border-radius: 50%; background: var(--yellow); box-shadow: 0 0 14px var(--yellow); }
.phase-card.live .status-light { background: var(--green); box-shadow: 0 0 14px var(--green); }
.phase-card.paused .status-light { background: var(--red); box-shadow: 0 0 14px var(--red); }
.phase-card.practice .status-light { background: var(--cyan); box-shadow: 0 0 14px var(--cyan); }

.alert { margin-bottom: 24px; padding: 16px 20px; border: 1px solid var(--line); background: var(--panel); }
.alert.error { border-color: var(--red); color: #ffadb3; }
.alert.warning { border-color: var(--yellow); }
.alert.practice { border-color: var(--cyan); }
.countdown-panel { text-align: center; border: 1px solid var(--line); padding: 36px; margin-bottom: 30px; background: var(--panel); }
.countdown-panel p { margin-bottom: 6px; text-transform: uppercase; font: 0.7rem var(--mono); }
.countdown { color: var(--cyan); font: clamp(1.6rem, 5vw, 3.8rem) var(--mono); letter-spacing: -0.05em; }
.countdown-panel small { color: var(--muted); }

.dashboard-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(290px, 0.8fr); gap: 24px; }
.lower-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 24px; margin-top: 24px; }
.card { position: relative; border: 1px solid var(--line); background: linear-gradient(145deg, var(--panel), #0a1b23); padding: clamp(24px, 4vw, 42px); overflow: hidden; }
.card-number { position: absolute; right: 14px; top: 0; font: 7rem/1 var(--mono); color: rgba(93, 224, 230, 0.05); }
.classification { color: var(--muted); font: 0.65rem var(--mono); text-transform: uppercase; letter-spacing: 0.1em; }
blockquote { border-left: 3px solid var(--orange); margin: 24px 0; padding: 11px 18px; color: #d7ddda; font-size: 1.05rem; }
.objectives { padding: 0; margin: 28px 0; list-style: none; counter-reset: objectives; }
.objectives li { padding: 10px 0 10px 32px; border-bottom: 1px solid rgba(41, 65, 74, 0.55); position: relative; color: #bdc7c5; }
.objectives li::before { counter-increment: objectives; content: "0" counter(objectives); position: absolute; left: 0; color: var(--cyan); font: 0.65rem var(--mono); }
.submission { align-self: start; }
.captured-stamp { display: inline-block; margin: 14px 0 24px; padding: 8px 14px; border: 3px solid var(--green); color: var(--green); font: 700 1.35rem var(--mono); text-transform: uppercase; transform: rotate(-4deg); }

.hint { display: grid; grid-template-columns: 38px 1fr; gap: 14px; padding: 16px 0; border-top: 1px solid var(--line); }
.hint > span { color: var(--orange); font: 0.7rem var(--mono); }
.hint p, .hint form { margin: 0; }
.text-button { border: 0; padding: 0; color: var(--cyan); text-decoration: underline; background: transparent; cursor: pointer; }
.section-heading { display: flex; justify-content: space-between; align-items: center; }
.live-pulse { color: var(--green); font: 0.65rem var(--mono); text-transform: uppercase; }
.live-pulse::before { content: ""; width: 7px; height: 7px; background: var(--green); border-radius: 50%; display: inline-block; margin-right: 7px; box-shadow: 0 0 9px var(--green); }
.leaderboard-row { display: grid; grid-template-columns: 58px 1fr 90px; gap: 10px; padding: 13px 8px; border-top: 1px solid var(--line); align-items: center; font-family: var(--mono); font-size: 0.78rem; }
.leaderboard-row.heading { color: var(--muted); text-transform: uppercase; font-size: 0.58rem; }
.leaderboard-row.winner { color: var(--yellow); background: rgba(245, 197, 66, 0.05); }
.leaderboard-row time { color: var(--muted); text-align: right; }
.empty-state { text-align: center; color: var(--muted); padding: 35px 0 10px; }
.empty-state span { display: block; color: var(--line); font: 3rem var(--mono); }

#fireworks { position: fixed; inset: 0; z-index: 50; pointer-events: none; }
.completion-hero { text-align: center; max-width: 830px; margin: 5vh auto 70px; }
.completion-hero h1 { font-size: clamp(3rem, 7vw, 6.3rem); }
.completion-hero p { font-size: 1.1rem; }
.success-seal { width: 72px; height: 72px; margin: 0 auto 28px; border: 2px solid var(--green); color: var(--green); border-radius: 50%; display: grid; place-items: center; font-size: 2rem; }
.completion-board { max-width: 760px; margin: 0 auto; }

.report { max-width: 880px; margin: 0 auto; }
.report header { margin-bottom: 54px; }
.report h1 { font-size: clamp(3rem, 7vw, 6rem); }
.report .lede { font-size: 1.24rem; max-width: 760px; }
.report section { border-top: 1px solid var(--line); padding: 42px 0; }
.report section h2 { color: var(--cyan); }
.report code { font-family: var(--mono); color: #b9f8fb; }
.report pre { padding: 24px; overflow: auto; background: #030d12; border-left: 3px solid var(--cyan); color: #dbe6e3; line-height: 1.6; }
.finding-banner { display: grid; grid-template-columns: 100px 100px 1fr; gap: 12px; padding: 17px 20px; border: 1px solid var(--red); color: #ffb1b7; font: 0.73rem var(--mono); text-transform: uppercase; }
.example-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.example-grid > div { padding: 20px; border: 1px solid var(--line); background: var(--panel); }
.example-grid p { margin: 8px 0 0; font-size: 0.9rem; }
.references { display: grid; gap: 12px; }
.references h2 { grid-column: 1 / -1; }
.references a { color: var(--cyan); font-family: var(--mono); }
.rules-page ul { color: #bdc7c5; line-height: 1.8; }

.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 24px; }
.stat { padding: 24px; border: 1px solid var(--line); background: var(--panel); }
.stat span { color: var(--muted); font: 0.65rem var(--mono); text-transform: uppercase; }
.stat strong { display: block; color: var(--cyan); font: 2.5rem var(--mono); margin-top: 8px; }
.admin-details div { display: grid; grid-template-columns: 120px 1fr; padding: 10px 0; border-top: 1px solid var(--line); }
.admin-details dt { color: var(--muted); font: 0.65rem var(--mono); text-transform: uppercase; }
.admin-details dd { margin: 0; }
.danger-zone form { margin: 12px 0; }

@media (max-width: 840px) {
  .hero.landing, .dashboard-grid, .lower-grid { grid-template-columns: 1fr; }
  .event-ticket { transform: none; }
  .challenge-header { align-items: flex-start; flex-direction: column; }
  .phase-card { width: 100%; }
  .site-header { align-items: flex-start; padding-top: 16px; padding-bottom: 16px; }
  .site-header nav { gap: 12px; flex-wrap: wrap; justify-content: flex-end; }
  .stat-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  main { width: min(92vw, 1180px); padding-top: 44px; }
  .site-header { position: static; }
  .wordmark > span:last-child { display: none; }
  .site-header nav { font-size: 0.75rem; }
  .narrow-panel { padding: 28px; }
  .card { padding: 24px; }
  .example-grid { grid-template-columns: 1fr; }
  .finding-banner { grid-template-columns: 1fr; }
  footer { flex-direction: column; gap: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}