#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg-base);
  padding: 24px;
}

.login-box {
  width: 100%;
  max-width: 380px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 44px 36px 36px;
}

.login-logo {
  text-align: center;
  margin-bottom: 8px;
}

.login-logo .brand-main {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1;
}

.login-logo .brand-voltar { color: #FFFFFF; }
.login-logo .brand-ia     { color: var(--green); }

.login-logo .brand-sentinel {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--text-deep);
  text-transform: uppercase;
  margin-top: 5px;
  display: block;
}

.login-tagline {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-deep);
  letter-spacing: .14em;
  text-align: center;
  margin-bottom: 36px;
}

.login-field {
  margin-bottom: 12px;
}

.login-field label {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-deep);
  letter-spacing: .12em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
}

.login-field input {
  width: 100%;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 11px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-primary);
  outline: none;
  transition: border-color .2s;
}

.login-field input:focus {
  border-color: var(--green-border);
}

.pass-wrap {
  position: relative;
}

.pass-wrap input {
  padding-right: 42px;
}

#toggle-pass {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  font-size: 14px;
  opacity: .4;
  transition: opacity .2s;
  padding: 0;
  line-height: 1;
}

#toggle-pass:hover { opacity: .7; }

.login-submit {
  width: 100%;
  margin-top: 20px;
  background: var(--green);
  color: var(--bg-base);
  border: none;
  border-radius: var(--r-sm);
  padding: 13px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .03em;
  transition: opacity .2s;
}

.login-submit:hover { opacity: .88; }

#login-error {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--danger);
  letter-spacing: .06em;
  margin-top: 12px;
  min-height: 16px;
  text-align: center;
}

.login-footer-note {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-deep);
  letter-spacing: .1em;
  text-align: center;
  margin-top: 28px;
}