:root {
  --bg: #0a0a0a;
  --bg-card: #161616;
  --vermelho: #fd0803;
  --texto: #f2f2f2;
  --texto-fraco: #a8a8a8;
  --borda: #2a2a2a;
}
* { box-sizing: border-box; }
body {
  background: var(--bg);
  color: var(--texto);
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  margin: 0;
  min-height: 100vh;
}
.topo {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--borda);
}
.marca {
  color: var(--vermelho);
  font-weight: 700;
  font-size: 1.2rem;
  text-decoration: none;
  letter-spacing: 0.5px;
}
.nav-usuario { display: flex; gap: 16px; align-items: center; color: var(--texto-fraco); }
.link-botao {
  background: none; border: none; color: var(--texto-fraco); cursor: pointer;
  text-decoration: underline; font-size: 0.9rem; padding: 0;
}
main { max-width: 960px; margin: 0 auto; padding: 32px 24px; }
h1 { font-size: 1.6rem; margin-bottom: 4px; }
.sub { color: var(--texto-fraco); margin-top: 0; margin-bottom: 24px; }
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--borda);
  border-radius: 10px;
  padding: 20px;
  text-decoration: none;
  color: var(--texto);
  transition: border-color 0.15s;
}
.card:hover { border-color: var(--vermelho); }
.card .icone {
  display: inline-block; width: 32px; height: 32px; border-radius: 6px;
  background: var(--vermelho); color: #fff; text-align: center; line-height: 32px;
  font-weight: 700; margin-bottom: 12px;
}
.card h3 { margin: 0; font-size: 1.05rem; }
.form-login {
  max-width: 360px; margin: 80px auto; background: var(--bg-card);
  padding: 32px; border-radius: 10px; border: 1px solid var(--borda);
}
label { display: block; margin: 12px 0 4px; color: var(--texto-fraco); font-size: 0.9rem; }
input, select, textarea {
  width: 100%; padding: 10px; border-radius: 6px; border: 1px solid var(--borda);
  background: #0f0f0f; color: var(--texto); font-size: 1rem;
}
textarea { min-height: 90px; resize: vertical; }
button.primario {
  margin-top: 20px; width: 100%; padding: 12px; border: none; border-radius: 6px;
  background: var(--vermelho); color: #fff; font-weight: 700; cursor: pointer; font-size: 1rem;
}
.erro { background: #3a1010; color: #ffb4b4; padding: 10px 14px; border-radius: 6px; margin-bottom: 12px; }
.aviso { background: #2a2410; color: #f0d98a; padding: 10px 14px; border-radius: 6px; margin-bottom: 20px; font-size: 0.9rem; }
table { width: 100%; border-collapse: collapse; margin-top: 16px; }
th, td { text-align: left; padding: 10px; border-bottom: 1px solid var(--borda); }
th { color: var(--texto-fraco); font-weight: 600; font-size: 0.85rem; text-transform: uppercase; }
.voltar { color: var(--texto-fraco); font-size: 0.9rem; }