/* Tela de login — independente do styles.css para carregar leve e sem
   depender de nada que exija sessao. */
:root {
  --lg-fundo: #f3f4f6;
  --lg-card: #ffffff;
  --lg-texto: #111827;
  --lg-sub: #6b7280;
  --lg-borda: #d1d5db;
  --lg-primaria: #1f2937;
  --lg-primaria-hover: #111827;
  --lg-erro: #b91c1c;
  --lg-erro-fundo: #fef2f2;
}

* { box-sizing: border-box; }

.login-body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--lg-fundo);
  color: var(--lg-texto);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding: 16px;
}

.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--lg-card);
  border: 1px solid var(--lg-borda);
  border-radius: 12px;
  padding: 28px 28px 24px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
}

.login-logo {
  display: block;
  height: 36px;
  margin: 0 auto 18px;
}

.login-card h1 {
  font-size: 20px;
  margin: 0 0 4px;
  text-align: center;
}

.login-sub {
  margin: 0 0 20px;
  text-align: center;
  color: var(--lg-sub);
  font-size: 14px;
}

.login-card label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin: 12px 0 4px;
}

.login-card input {
  width: 100%;
  font: inherit;
  padding: 10px 12px;
  border: 1px solid var(--lg-borda);
  border-radius: 8px;
  background: #fff;
}

.login-card input:focus {
  outline: 2px solid var(--lg-primaria);
  outline-offset: 1px;
}

.login-erro {
  margin: 12px 0 0;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--lg-erro-fundo);
  color: var(--lg-erro);
  font-size: 13px;
}

.login-btn {
  width: 100%;
  margin-top: 18px;
  padding: 11px 12px;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--lg-primaria);
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}

.login-btn:hover { background: var(--lg-primaria-hover); }
.login-btn[disabled] { opacity: 0.6; cursor: wait; }