:root {
  --abyss: #020B12; --deep: #071821; --panel: rgba(7, 24, 33, 0.86); --line: #1E3A44;
  --emerald: #45F59B; --red: #E2384A; --cyan: #4EB6C3; --amber: #E8A33D;
  --text: #E6F1F2; --body: #A9BFC4; --muted: #8FA9AF;
  --mono: ui-monospace, "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--abyss); color: var(--text); font: 16px/1.6 var(--sans); }
a { color: var(--emerald); }
code { font-family: var(--mono); font-size: 0.9em; color: var(--text); word-break: break-all; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.hidden { display: none !important; }

.top { position: sticky; top: 0; z-index: 10; display: flex; justify-content: space-between; align-items: center;
       gap: 16px; padding: 12px 24px; background: rgba(2, 11, 18, 0.88); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); text-decoration: none; font-weight: 700; }
.logo { height: 32px; width: auto; }
.top nav { display: flex; align-items: center; gap: 18px; }
.top nav a { color: var(--body); text-decoration: none; }
.top nav a:hover { color: var(--text); }
.top nav a.btn { color: #04211A; }
.inline { display: inline; margin: 0; }
button.link { background: none; border: 0; color: var(--body); font: inherit; cursor: pointer; padding: 0; }
.banner { background: var(--amber); color: #1A1405; padding: 10px 24px; font-weight: 600; }

.btn { display: inline-block; padding: 12px 22px; border-radius: 8px; border: 1.5px solid var(--emerald);
       background: var(--emerald); color: #04211A; font-weight: 700; letter-spacing: 0.5px; text-decoration: none;
       cursor: pointer; font-size: 15px; box-shadow: 0 0 22px rgba(69, 245, 155, 0.35); }
.btn:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; color: var(--emerald); box-shadow: none; }
.btn.small { padding: 6px 14px; font-size: 14px; }
.btn.wide { width: 100%; }

.hero { position: relative; min-height: calc(100vh - 57px); display: flex; align-items: center; padding: 48px 24px;
        background-size: cover; background-position: center; }
.hero-landing { background-image: linear-gradient(90deg, rgba(2,11,18,0.95) 0%, rgba(2,11,18,0.7) 40%, rgba(2,11,18,0.1) 75%), url("img/landing.jpg"); }
.hero-challenge { background-image: linear-gradient(0deg, rgba(2,11,18,0.75), rgba(2,11,18,0.45)), url("img/challenge.jpg"); }
.hero-submit { justify-content: center; background-image: linear-gradient(0deg, rgba(2,11,18,0.55), rgba(2,11,18,0.35)), url("img/complete.jpg"); }
.hero-text { max-width: 560px; }
.eyebrow { font: 600 13px/1.4 var(--mono); letter-spacing: 4px; text-transform: uppercase; color: var(--emerald); margin: 0 0 8px; }
h1 { font-size: clamp(40px, 7vw, 80px); line-height: 1; margin: 0 0 18px; letter-spacing: 2px; text-transform: uppercase; }
.hero-submit h1 { font-size: clamp(28px, 4vw, 40px); text-align: center; }
.lead { font-size: 19px; color: #C3D5D8; }
.notice { color: var(--amber); }
.actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 26px; }

.band { max-width: 1080px; margin: 0 auto; padding: 56px 24px 8px; }
.band.narrow { max-width: 640px; padding-top: 96px; }
.band h2 { font-size: 28px; margin: 0 0 18px; }
.steps { padding-left: 22px; color: var(--body); }
.steps li { margin-bottom: 10px; }
.steps b { color: var(--text); }
.shift-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.shift-cards article { background: var(--deep); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; }
.shift-cards h3 { margin: 4px 0 8px; }
.shift-cards p { color: var(--body); margin: 0; }
.tag { font: 600 12px var(--mono); letter-spacing: 2px; text-transform: uppercase; color: var(--cyan) !important; }
details { background: var(--deep); border: 1px solid var(--line); border-radius: 10px; padding: 12px 18px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 600; }
details p { color: var(--body); margin: 10px 0 0; }

.console { width: 100%; max-width: 1080px; margin: 0 auto; display: grid; grid-template-columns: 1.2fr 1fr; gap: 20px; }
.panel { background: var(--panel); border: 1.5px solid var(--line); border-radius: 14px; padding: 24px;
         box-shadow: 0 0 30px rgba(78, 182, 195, 0.12); backdrop-filter: blur(6px); }
.keyrow { display: flex; gap: 12px; align-items: center; background: #0B1E28; border: 1px solid var(--line);
          border-radius: 8px; padding: 12px 14px; }
.keyrow code { flex: 1; color: var(--emerald); }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 8px 16px; margin: 18px 0 0; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; }
.shifts { list-style: none; padding: 0; margin: 0 0 20px; }
.shift { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.shift .num { font: 700 20px var(--mono); width: 28px; color: var(--muted); }
.shift .name { flex: 1; font-weight: 600; }
.chip { font: 600 12px var(--mono); letter-spacing: 1.5px; text-transform: uppercase; border: 1.5px solid var(--muted);
        color: var(--muted); padding: 3px 10px; border-radius: 6px; }
.shift.passed .chip { border-color: var(--emerald); color: var(--emerald); }
.shift.available .chip { border-color: var(--red); color: #FF7A86; }

.terminal { width: 100%; max-width: 640px; min-height: 480px; border-color: var(--cyan); background: rgba(7, 24, 33, 0.94); }
.terminal form { display: grid; gap: 14px; margin: 18px 0 8px; }
.terminal input[type=text] { width: 100%; padding: 14px 16px; border-radius: 8px; border: 1.5px solid var(--cyan);
        background: #0B1E28; color: var(--text); font: 16px var(--mono); }
.track { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; padding: 0; margin: 0 0 24px; text-align: center; }
.track li { display: flex; flex-direction: column; align-items: center; gap: 2px; font: 600 11px var(--mono); color: var(--muted); text-transform: uppercase; }
.track .dot { width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--muted); }
.track .passed { color: var(--emerald); }
.track .passed .dot { border-color: var(--emerald); background: rgba(69, 245, 155, 0.25); box-shadow: 0 0 12px var(--emerald); }
.result { font: 600 18px var(--mono); min-height: 1.6em; }
.result.ok { color: var(--emerald); }
.result.bad { color: #FF7A86; }

.foot { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
        padding: 28px 24px; margin-top: 56px; border-top: 1px solid var(--line); color: var(--muted); }
.social { display: flex; gap: 16px; align-items: center; }

@media (max-width: 820px) {
  .console { grid-template-columns: 1fr; }
  .hero-landing { background-image: linear-gradient(0deg, rgba(2,11,18,0.95) 30%, rgba(2,11,18,0.5) 100%), url("img/landing.jpg"); }
}