/* Tela de login do dashboard de Telemetria.
   Fundo: login-background.jpg (1024×572). O card fica no ponto do fundo reservado para o login
   (centro em 67,9% × 52% da imagem) e acompanha a imagem em qualquer proporção de tela:
   o "palco" reproduz o background-size: cover com a mesma proporção da imagem. */
:root {
  --img-ratio: calc(1024 / 572);
  --login-x: 67.9%;
  --login-y: 52%;

  --color-white: #ffffff;
  --color-ink: #e8f4f8;
  --color-muted: #9fb7c4;
  --color-field: rgba(9, 24, 34, 0.72);
  --color-field-border: rgba(140, 200, 220, 0.35);
  --color-blue-400: #4fc0e0;
  --color-coral-500: #ff6b57;
  --color-coral-600: #f1553f;
  --color-danger: #ff8a7a;
  --font-sans: "Segoe UI", system-ui, Roboto, sans-serif;
  color-scheme: dark;
  -webkit-font-smoothing: antialiased;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #071a24;
  font-family: var(--font-sans);
  color: var(--color-ink);
}

.login-stage {
  position: fixed;
  left: 50%;
  top: 50%;
  width: max(100vw, calc(100vh * var(--img-ratio)));
  height: max(100vh, calc(100vw / var(--img-ratio)));
  transform: translate(-50%, -50%);
  background: url("/login-assets/login-background.jpg") center / 100% 100% no-repeat;
}

.login-card {
  position: absolute;
  left: var(--login-x);
  top: var(--login-y);
  transform: translate(-50%, -50%);
  width: min(340px, calc(100vw - 32px));
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: rgba(8, 26, 38, 0.62);
  border: 1px solid rgba(120, 200, 230, 0.22);
  border-radius: 16px;
  box-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* Telas estreitas: o ponto do login sairia da tela, então o card centraliza. */
@media (max-width: 720px) {
  .login-card {
    position: fixed;
    left: 50%;
    top: 50%;
  }
}

.login-logo {
  height: 26px;
  width: auto;
  align-self: center;
  filter: brightness(0) invert(1);
}

.login-heading { text-align: center; }

.login-heading h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  color: var(--color-white);
}

.login-heading p {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--color-muted);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.login-field label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-muted);
}

.login-field input {
  border: 1px solid var(--color-field-border);
  border-radius: 8px;
  padding: 11px 13px;
  font-size: 14px;
  color: var(--color-white);
  background: var(--color-field);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.login-field input:focus {
  border-color: var(--color-blue-400);
  box-shadow: 0 0 0 3px rgba(79, 192, 224, 0.22);
}

.btn-primary {
  margin-top: 4px;
  border: none;
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
  background: var(--color-coral-500);
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease;
}

.btn-primary:hover { background: var(--color-coral-600); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:disabled { opacity: 0.7; cursor: progress; }

.login-error {
  margin: 0;
  font-size: 13px;
  color: var(--color-danger);
  text-align: center;
}

.login-error.login-info { color: var(--color-blue-400); }