:root {
  --bg: #0a0a0a;
  --ink: #f2f0e9;
  --paper: #f2f0e9;
  --line: #f2f0e9;
  --red: #ff2d1f;
  --green: #2bd97c;
  --yellow: #ffd400;
  --muted: #8a8a82;
  --shadow-color: #000;
  --mono: "Space Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --display: "Archivo Black", var(--mono);
}

* { box-sizing: border-box; }

html, body {
  background: var(--bg);
  color: var(--ink);
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--mono);
  overflow-x: hidden;
  position: relative;
}

.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.025) 0px,
    rgba(255, 255, 255, 0.025) 1px,
    transparent 1px,
    transparent 3px
  );
  mix-blend-mode: overlay;
}

a { color: var(--yellow); }

/* Topbar */
.topbar {
  border-bottom: 3px solid var(--line);
  padding: 14px 20px;
}
.topbar-inner {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.brand {
  font-family: var(--display);
  font-size: 20px;
  letter-spacing: -0.5px;
}
.brand-accent { color: var(--red); }
.brand-tag {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.5px;
  flex: 1;
}
.menu-btn {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  background: transparent;
  color: var(--ink);
  border: 2px solid var(--line);
  padding: 6px 10px;
  cursor: pointer;
}
.menu-btn:active { transform: translate(2px, 2px); }

main#app {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}

.screen { display: none; }
.screen[data-active="true"] { display: block; animation: fadeIn 0.25s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Buttons — neubrutalist press */
.btn {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 14px 22px;
  border: 3px solid var(--line);
  background: var(--bg);
  color: var(--ink);
  cursor: pointer;
  box-shadow: 5px 5px 0 var(--shadow-color), 5px 5px 0 1px var(--line);
  transition: transform 0.06s ease, box-shadow 0.06s ease;
}
.btn:active {
  transform: translate(4px, 4px);
  box-shadow: 1px 1px 0 var(--shadow-color), 1px 1px 0 1px var(--line);
}
.btn-primary { background: var(--yellow); color: #0a0a0a; }
.btn-ghost { background: transparent; }
.btn-ship { background: var(--green); color: #04170c; border-color: var(--line); }
.btn-revert { background: var(--red); color: #1a0402; border-color: var(--line); }
.btn-lab { background: #0a0a0a; color: var(--yellow); border-color: var(--yellow); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* HERO */
.hero-stamp {
  display: inline-block;
  border: 2px solid var(--red);
  color: var(--red);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  padding: 4px 10px;
  transform: rotate(-2deg);
  margin-bottom: 18px;
}
.hero-title {
  font-family: var(--display);
  font-size: clamp(38px, 9vw, 62px);
  line-height: 0.98;
  letter-spacing: -1px;
  margin: 0 0 20px;
  text-wrap: balance;
}
.hero-sub {
  font-size: 15px;
  line-height: 1.6;
  color: #d6d3c8;
  max-width: 56ch;
  margin: 0 0 32px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-footer {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.5px;
  border-top: 2px dashed var(--line);
  padding-top: 16px;
}

/* GUIDE */
.guide-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 14px;
  font-size: 12px;
  letter-spacing: 1px;
}
.guide-kicker { color: var(--yellow); font-weight: 700; }
.guide-progress { color: var(--muted); }
.guide-card {
  border: 3px solid var(--line);
  background: #121212;
  box-shadow: 8px 8px 0 var(--shadow-color), 8px 8px 0 1px var(--line);
  padding: 32px 26px;
  min-height: 260px;
  position: relative;
}
.guide-num {
  position: absolute;
  top: -18px;
  right: 20px;
  font-family: var(--display);
  font-size: 44px;
  color: var(--bg);
  -webkit-text-stroke: 2px var(--line);
}
.guide-title {
  font-family: var(--display);
  font-size: clamp(28px, 6vw, 40px);
  margin: 0 0 16px;
  letter-spacing: -0.5px;
}
.guide-body {
  font-size: 15px;
  line-height: 1.65;
  color: #e4e1d6;
  margin: 0 0 20px;
}
.guide-mistake {
  border-left: 4px solid var(--red);
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.5;
  color: #f5c9c5;
  background: rgba(255, 45, 31, 0.08);
}
.guide-mistake b { color: var(--red); }
.guide-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
  gap: 10px;
}
.guide-dots { display: flex; gap: 8px; }
.guide-dots span {
  width: 10px; height: 10px;
  border: 2px solid var(--line);
  background: transparent;
}
.guide-dots span[data-on="true"] { background: var(--yellow); }

/* GAME */
.game-hud {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
}
.hud-block {
  flex: 1;
  border: 2px solid var(--line);
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hud-label { font-size: 10px; color: var(--muted); letter-spacing: 1px; }
.hud-value { font-family: var(--display); font-size: 20px; }

.timer-track {
  height: 10px;
  border: 2px solid var(--line);
  margin-bottom: 20px;
  background: #1a1a1a;
}
.timer-fill {
  height: 100%;
  background: var(--yellow);
  width: 100%;
  transform-origin: left;
}
.timer-fill[data-danger="true"] { background: var(--red); }

.round-card {
  border: 3px solid var(--line);
  background: #121212;
  box-shadow: 8px 8px 0 var(--shadow-color), 8px 8px 0 1px var(--line);
  padding: 28px 24px;
  min-height: 220px;
  position: relative;
  margin-bottom: 20px;
}
.round-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  padding: 4px 10px;
  border: 2px solid var(--yellow);
  color: var(--yellow);
  margin-bottom: 16px;
}
.round-body {
  font-size: 15px;
  line-height: 1.7;
  white-space: pre-wrap;
}
.round-body code, .round-body .snippet {
  display: block;
  background: #000;
  border: 2px solid #2b2b2b;
  padding: 12px 14px;
  margin-top: 12px;
  font-size: 13px;
  color: #b6ffb0;
  overflow-x: auto;
}

.verdict {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 10, 0.97);
  border: 3px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 24px;
  text-align: center;
}
.verdict[hidden] { display: none; }
.verdict-stamp {
  font-family: var(--display);
  font-size: 34px;
  letter-spacing: 1px;
  border: 4px solid currentColor;
  padding: 6px 20px;
  transform: rotate(-4deg);
}
.verdict-stamp[data-good="true"] { color: var(--green); }
.verdict-stamp[data-good="false"] { color: var(--red); }
.verdict-lesson { font-size: 14px; line-height: 1.6; color: #d6d3c8; max-width: 50ch; }

.round-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.round-actions .btn { padding: 20px; font-size: 15px; }
.round-hint {
  text-align: center;
  font-size: 11px;
  color: var(--muted);
  margin-top: 14px;
  letter-spacing: 0.5px;
}

/* LIVE LAB */
.lab-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 14px;
  font-size: 12px;
  letter-spacing: 1px;
}
.lab-task {
  border: 3px solid var(--line);
  background: #121212;
  box-shadow: 6px 6px 0 var(--shadow-color), 6px 6px 0 1px var(--line);
  padding: 20px 22px;
  margin-bottom: 20px;
}
.lab-task-name {
  font-family: var(--display);
  font-size: clamp(20px, 5vw, 26px);
  color: var(--yellow);
  margin-bottom: 8px;
}
.lab-task-desc { font-size: 14px; line-height: 1.6; color: #d6d3c8; margin: 0; }

.lab-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--muted);
  margin-bottom: 8px;
}
.lab-prompt {
  width: 100%;
  background: #000;
  color: var(--ink);
  border: 3px solid var(--line);
  font-family: var(--mono);
  font-size: 14px;
  padding: 14px;
  resize: vertical;
  margin-bottom: 8px;
}
.lab-prompt:focus { outline: 2px solid var(--yellow); outline-offset: 2px; }
.lab-prompt-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.lab-count { font-size: 11px; color: var(--muted); }

.lab-agent {
  border: 3px solid var(--line);
  background: #121212;
  box-shadow: 6px 6px 0 var(--shadow-color), 6px 6px 0 1px var(--line);
  margin-bottom: 20px;
}
.lab-agent-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  border-bottom: 2px solid var(--line);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--yellow);
}
.lab-agent-meta { color: var(--muted); font-weight: 400; letter-spacing: 0; }
.lab-code {
  margin: 0;
  padding: 16px;
  font-size: 13px;
  line-height: 1.6;
  color: #b6ffb0;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 320px;
  overflow-y: auto;
}

.lab-scan {
  border-left: 4px solid var(--yellow);
  background: rgba(255, 212, 0, 0.08);
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 20px;
}
.lab-scan[data-danger="true"] {
  border-left-color: var(--red);
  background: rgba(255, 45, 31, 0.08);
  color: #f5c9c5;
}
.lab-scan b { color: inherit; }

.lab-actions, .lab-next { margin-bottom: 24px; }

.lab-results { margin-bottom: 24px; }
.lab-result-row {
  display: flex;
  align-items: center;
  gap: 12px;
  border: 2px solid var(--line);
  border-top: none;
  padding: 10px 14px;
  font-size: 13px;
}
.lab-result-row:first-child { border-top: 2px solid var(--line); }
.lab-result-mark {
  font-family: var(--display);
  font-size: 16px;
  width: 22px;
  flex-shrink: 0;
}
.lab-result-row[data-pass="true"] .lab-result-mark { color: var(--green); }
.lab-result-row[data-pass="false"] .lab-result-mark { color: var(--red); }
.lab-result-detail { color: var(--muted); font-size: 12px; }
.lab-summary {
  font-family: var(--display);
  font-size: 20px;
  padding: 14px;
  border: 3px solid var(--line);
  margin-top: -2px;
  text-align: center;
}
.lab-summary[data-pass="true"] { background: var(--green); color: #04170c; }
.lab-summary[data-pass="false"] { background: var(--red); color: #1a0402; }

.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--bg);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-right: 8px;
  vertical-align: -2px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.lab-sandbox { position: absolute; width: 0; height: 0; border: 0; opacity: 0; pointer-events: none; }

/* RESULTS */
.results-stamp {
  display: inline-block;
  font-family: var(--display);
  font-size: clamp(22px, 6vw, 32px);
  border: 4px solid var(--yellow);
  color: var(--yellow);
  padding: 8px 18px;
  transform: rotate(-3deg);
  margin-bottom: 24px;
}
.results-score {
  font-family: var(--display);
  font-size: clamp(48px, 12vw, 80px);
  margin: 0 0 16px;
  letter-spacing: -1px;
}
.results-copy {
  font-size: 15px;
  line-height: 1.6;
  color: #d6d3c8;
  max-width: 56ch;
  margin: 0 0 30px;
}
.results-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }

@media (max-width: 480px) {
  .round-actions { grid-template-columns: 1fr; }
  .btn { box-shadow: 4px 4px 0 var(--shadow-color), 4px 4px 0 1px var(--line); }
}