/*
 * Componentes-base do design system — Localiza Placa.
 * Constrói sobre as classes estruturais do Bootstrap (.btn, .form-control,
 * .card, .alert, .spinner-border); não recria o que o Bootstrap já resolve.
 * Ver dev/componentes.php para a demonstração isolada de cada estado.
 */

/* ---------- Botões ---------- */

.btn {
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  padding-block: var(--space-2);
  padding-inline: var(--space-4);
}

.btn-lg {
  min-height: var(--control-height-lg);
}

/* Estado de carregamento: mantém o texto para leitor de tela, esconde
   visualmente e mostra o spinner. aria-busy é lido pelo JS (assets/js/forms.js). */
.btn[aria-busy="true"] {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn[aria-busy="true"] .btn-spinner {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn[aria-busy="true"] .btn-spinner .spinner-border {
  color: currentColor;
}

.btn-primary[aria-busy="true"] .btn-spinner {
  color: var(--color-text-inverse);
}

.btn-outline-primary[aria-busy="true"] .btn-spinner {
  color: var(--color-primary);
}

/* Bootstrap vendorizado não respeita prefers-reduced-motion para
   .spinner-border (usado nos estados de carregamento acima e em
   assets/js/navigation.js); override do lado do projeto em vez de
   editar o CSS vendor. */
@media (prefers-reduced-motion: reduce) {
  .spinner-border {
    animation-duration: 1.5s;
  }
}

/* ---------- Campo de formulário ---------- */

.form-field {
  margin-bottom: var(--space-4);
  text-align: left;
}

.form-field label {
  display: block;
  margin-bottom: var(--space-1);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.form-field .form-control {
  min-height: var(--control-height);
  border-color: var(--color-border);
}

.form-field .form-control::placeholder {
  color: var(--color-text-disabled);
}

.form-field .form-control:disabled,
.form-field .form-control[readonly] {
  background-color: var(--color-gray-100);
  color: var(--color-text-secondary);
}

.form-field .form-control.is-invalid {
  border-color: var(--color-danger);
}

.form-field .invalid-feedback {
  color: var(--color-danger-text);
  font-size: var(--font-size-sm);
}

.form-field .form-text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
}

/* ---------- Cards ---------- */

.card-info {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  padding: var(--space-5);
  transition: box-shadow .2s ease, transform .2s ease;
}

.card-info:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

@media (prefers-reduced-motion: reduce) {
  .card-info {
    transition: none;
  }
  .card-info:hover {
    transform: none;
  }
}

.card-info .card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-primary-subtle-bg);
  color: var(--color-primary);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-3);
}

.card-info h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
}

.card-info p {
  color: var(--color-text-secondary);
  line-height: var(--line-height-long);
  margin: 0;
}

/* Card de autenticação: não é clicável, sem efeito de hover */
.card-auth {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
  padding: var(--space-6);
}

.card-auth h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  text-align: center;
  margin-bottom: var(--space-5);
}

/* ---------- Alertas inline ---------- */

.alert-danger {
  background-color: var(--color-danger-bg);
  border-color: var(--color-danger-border);
  color: var(--color-danger-text);
}

.alert-success {
  background-color: var(--color-success-bg);
  border-color: var(--color-success-border);
  color: var(--color-success-text);
}

.alert-warning {
  background-color: var(--color-warning-bg);
  border-color: var(--color-warning-border);
  color: var(--color-warning-text);
}

.alert-info {
  background-color: var(--color-info-bg);
  border-color: var(--color-info-border);
  color: var(--color-info-text);
}

.alert {
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
}

/* ---------- Foco visível global ---------- */

a:focus-visible,
button:focus-visible,
input:focus-visible,
.btn:focus-visible,
.page-header__title:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

/* ---------- Skip link ---------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 2000;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-4);
  border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus {
  left: 0;
}

/* ---------- Cabeçalho de página (dentro de #conteudo) ---------- */

.page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.page-header__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin: 0 0 var(--space-1);
}

.page-header__description {
  color: var(--color-text-secondary);
  margin: 0;
}

.page-header__action {
  flex-shrink: 0;
}

/* ---------- Modal padrão (estrutura do Bootstrap, identidade por tokens) ---------- */

.modal-content {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.modal-header,
.modal-footer {
  padding: var(--space-4);
  border-color: var(--color-border);
}

.modal-body {
  padding: var(--space-4);
}

.modal-title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
}

.modal-backdrop.show {
  background: var(--overlay-modal);
  opacity: 1;
}

/* ---------- Mural de câmeras (telas/cameras_wall.php) ---------- */

.cams-wall {
  display: grid;
  grid-template-columns: repeat(4, minmax(220px, 1fr));
  gap: var(--space-3);
}

@media (max-width: 1100px) {
  .cams-wall {
    grid-template-columns: repeat(2, minmax(220px, 1fr));
  }
}

@media (max-width: 650px) {
  .cams-wall {
    grid-template-columns: 1fr;
  }
}

.cam-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  padding: var(--space-3);
}

.cam-card__title {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-2);
}

.cam-card__server {
  font-weight: var(--font-weight-semibold);
  color: inherit;
}

.cam-card__video {
  width: 100%;
  height: auto;
  background: #000;
  border-radius: var(--radius-sm);
}

.cam-card__last {
  margin-top: var(--space-2);
  padding-top: var(--space-2);
  border-top: 1px dashed var(--color-border);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.cam-card__last--vazio {
  opacity: .8;
  font-style: italic;
}