:root {
  --bg: #0a0e14;
  --bg2: #11161f;
  --card: #151b26;
  --verde: #00ff88;
  --verde-dim: #0d3;
  --texto: #d7e0ea;
  --cinza: #8b96a5;
  --vermelho: #ff5566;
  --amarelo: #ffd166;
  --borda: #232c3b;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--texto);
  font-family: "Segoe UI", system-ui, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.aviso-lab {
  background: #1a1206;
  color: var(--amarelo);
  text-align: center;
  font-size: .8rem;
  padding: 8px 12px;
  border-bottom: 1px solid #3a2d10;
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
}
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 16px 5vw;
  background: var(--bg2);
  border-bottom: 1px solid var(--borda);
}
.logo {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
}
.logo span { color: var(--verde); }
.links { display: flex; gap: 18px; flex-wrap: wrap; }
.links a {
  color: var(--cinza);
  text-decoration: none;
  font-size: .9rem;
}
.links a:hover { color: var(--verde); }
main { flex: 1; width: 100%; max-width: 900px; margin: 0 auto; padding: 40px 20px 60px; }
footer {
  text-align: center;
  color: var(--cinza);
  font-size: .8rem;
  padding: 24px;
  border-top: 1px solid var(--borda);
}
h1 { font-size: 2rem; margin-bottom: 12px; color: #fff; }
h2 { color: #fff; margin: 28px 0 12px; }
p { line-height: 1.65; margin-bottom: 12px; }
.mono { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; }
.destaque { color: var(--verde); }

.card {
  background: var(--card);
  border: 1px solid var(--borda);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 20px;
}
.terminal {
  background: #0d1117;
  border: 1px solid var(--borda);
  border-radius: 12px;
  padding: 20px;
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: .9rem;
  line-height: 1.8;
  margin: 20px 0;
  overflow-x: auto;
}
.terminal .prompt { color: var(--verde); }
.terminal .comando { color: #fff; }
.terminal .comentario { color: var(--cinza); }

.btn {
  display: inline-block;
  background: var(--verde);
  color: #04140b;
  font-weight: 700;
  padding: 12px 26px;
  border-radius: 8px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}
.btn:hover { filter: brightness(1.1); }
.btn-fantasma {
  background: transparent;
  color: var(--verde);
  border: 1px solid var(--verde);
  margin-left: 10px;
}

input, textarea {
  width: 100%;
  background: #0d1117;
  border: 1px solid var(--borda);
  border-radius: 8px;
  color: var(--texto);
  padding: 12px 14px;
  font-size: 1rem;
  margin-bottom: 14px;
  font-family: inherit;
}
input:focus, textarea:focus { outline: 1px solid var(--verde); }
label { display: block; margin-bottom: 6px; font-size: .9rem; color: var(--cinza); }

.erro {
  background: #2a1114;
  border: 1px solid var(--vermelho);
  color: var(--vermelho);
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-family: ui-monospace, Consolas, monospace;
  font-size: .85rem;
  word-break: break-word;
}
.flag-box {
  background: #062b1a;
  border: 1px solid var(--verde);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 20px 0;
  text-align: center;
}
.flag-box .flag {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 1.15rem;
  color: var(--verde);
  font-weight: 700;
  letter-spacing: 1px;
}
table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: .9rem; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--borda); }
th { color: var(--cinza); font-weight: 600; text-transform: uppercase; font-size: .75rem; }

details {
  background: #0d1117;
  border: 1px solid var(--borda);
  border-radius: 8px;
  padding: 12px 16px;
  margin-top: 12px;
}
details summary { cursor: pointer; color: var(--amarelo); font-size: .9rem; }
details p, details code { margin-top: 10px; font-size: .9rem; }

.dica-bloqueada {
  background: #0d1117;
  border: 1px dashed var(--borda);
  border-radius: 8px;
  padding: 14px 16px;
  margin-top: 12px;
}
.dica-bloqueada form { margin-top: 8px; }
.dica-bloqueada .erro { margin: 10px 0 0; padding: 8px 12px; font-size: .8rem; }
code, pre {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  background: #000;
  padding: 2px 7px;
  border-radius: 5px;
  color: var(--verde);
  font-size: .88em;
}
pre { padding: 14px; overflow-x: auto; margin-top: 10px; line-height: 1.6; }

.missao-num {
  display: inline-block;
  background: var(--verde);
  color: #04140b;
  font-weight: 800;
  border-radius: 6px;
  padding: 2px 10px;
  margin-right: 8px;
  font-family: ui-monospace, Consolas, monospace;
}
.resultado {
  border: 1px solid var(--borda);
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 8px;
  background: #0d1117;
}
.resultado .preco { color: var(--verde); font-family: ui-monospace, monospace; }
.comentario-item { border-bottom: 1px solid var(--borda); padding: 14px 0; }
.comentario-item .nome { color: var(--amarelo); font-size: .85rem; margin-bottom: 4px; }
.cta-final { text-align: center; margin-top: 30px; }
.aviso-etico {
  border-left: 3px solid var(--vermelho);
  background: #1a1114;
  padding: 14px 18px;
  border-radius: 0 8px 8px 0;
  margin: 16px 0;
  font-size: .92rem;
}