:root {
  --azul: #1d4ed8;
  --azul-oscuro: #1e3a8a;
  --fondo: #f4f6fb;
  --texto: #16213a;
  --borde: #d7deec;
  --error: #b91c1c;
  --error-fondo: #fef2f2;
  --exito: #15803d;
  --exito-fondo: #f0fdf4;
  --aviso: #92400e;
  --aviso-fondo: #fffbeb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--fondo);
  color: var(--texto);
}

#app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  background: var(--azul);
  color: white;
  position: sticky;
  top: 0;
  z-index: 10;
  flex-wrap: wrap;
}
#app-header .marca { font-weight: 700; font-size: 1.1rem; }
#nav-principal { display: flex; gap: 14px; flex-wrap: wrap; }
#nav-principal a { color: white; text-decoration: none; opacity: 0.85; font-size: 0.95rem; }
#nav-principal a.activo { opacity: 1; font-weight: 700; text-decoration: underline; }
.shell-derecha { display: flex; align-items: center; gap: 10px; font-size: 0.9rem; }
#btn-logout {
  background: rgba(255,255,255,0.15);
  color: white;
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: 6px;
  padding: 6px 10px;
  cursor: pointer;
}

main#vista-actual { max-width: 720px; margin: 0 auto; padding: 20px 16px 60px; }

h1 { font-size: 1.4rem; margin: 4px 0 18px; }
h2 { font-size: 1.05rem; margin: 0 0 6px; }

form { display: flex; flex-direction: column; gap: 14px; background: white; padding: 16px; border-radius: 10px; border: 1px solid var(--borde); margin-bottom: 20px; }
form.form-inline { flex-direction: row; align-items: center; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 0.9rem; font-weight: 600; }
label.checkbox { flex-direction: row; align-items: center; font-weight: 400; }
input, select {
  padding: 10px 12px;
  border: 1px solid var(--borde);
  border-radius: 8px;
  font-size: 1rem;
}
button {
  padding: 12px 16px;
  background: var(--azul);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}
button:disabled { opacity: 0.6; cursor: default; }
fieldset { border: 1px solid var(--borde); border-radius: 8px; }

.error { color: var(--error); background: var(--error-fondo); padding: 10px 12px; border-radius: 8px; font-size: 0.9rem; }
.exito { color: var(--exito); background: var(--exito-fondo); padding: 10px 12px; border-radius: 8px; font-size: 0.9rem; }
.aviso-offline, .aviso-pendientes, .ayuda { color: var(--aviso); background: var(--aviso-fondo); padding: 10px 12px; border-radius: 8px; font-size: 0.9rem; margin-bottom: 12px; }
.cargando { color: #64748b; }

.pantalla-login { max-width: 360px; margin: 60px auto; }

.grid-tarjetas { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.tarjeta { display: block; background: white; border: 1px solid var(--borde); border-radius: 10px; padding: 16px; text-decoration: none; color: var(--texto); }
.tarjeta p { margin: 4px 0 0; color: #556; font-size: 0.88rem; }

.selector-vehiculo { display: flex; flex-direction: column; gap: 12px; background: white; padding: 16px; border-radius: 10px; border: 1px solid var(--borde); margin-bottom: 16px; }
#video-escaner { width: 100%; border-radius: 10px; background: black; }

.tarjeta-vehiculo { background: white; border: 1px solid var(--borde); border-radius: 10px; padding: 14px 16px; margin-bottom: 14px; }

.grid-vehiculos { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.tarjeta-vehiculo-admin { display: flex; gap: 12px; background: white; border: 1px solid var(--borde); border-radius: 10px; padding: 12px; align-items: flex-start; }
.tarjeta-vehiculo-admin img { border-radius: 6px; border: 1px solid var(--borde); }

.tabla { width: 100%; border-collapse: collapse; background: white; border-radius: 10px; overflow: hidden; }
.tabla th, .tabla td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--borde); font-size: 0.9rem; }

.lista { list-style: none; padding: 0; background: white; border-radius: 10px; border: 1px solid var(--borde); }
.lista li { padding: 10px 14px; border-bottom: 1px solid var(--borde); }
.lista li:last-child { border-bottom: none; }
.vacio { color: #64748b; padding: 10px 14px; }

/* --- Preventivo --- */
.fila-vencido td:first-child { border-left: 4px solid var(--error); }
.fila-proximo td:first-child { border-left: 4px solid var(--aviso); }
.fila-al_dia td:first-child { border-left: 4px solid var(--exito); }

/* --- Órdenes --- */
.tabla-clicable tbody tr { cursor: pointer; }
.tabla-clicable tbody tr:hover { background: var(--fondo); }
.detalle-orden { background: white; padding: 16px; border-radius: 10px; border: 1px solid var(--borde); margin-top: 14px; display: flex; flex-direction: column; gap: 12px; }
.detalle-orden h2 { margin: 0; }
#btn-volver { align-self: flex-start; background: none; color: var(--azul); padding: 4px 0; }
.tarjeta-incidente { background: var(--fondo); border-radius: 8px; padding: 10px 12px; }
.control-orden { display: flex; align-items: flex-end; gap: 10px; flex-wrap: wrap; }
.control-orden label { flex: 1; min-width: 160px; }
.form-transicion { display: flex; flex-direction: column; gap: 8px; background: var(--fondo); padding: 12px; border-radius: 8px; margin: 0; border: none; }
.form-transicion textarea, .form-transicion input { padding: 8px 10px; border: 1px solid var(--borde); border-radius: 6px; font-size: 0.95rem; font-family: inherit; }

/* --- Incidentes --- */
.tarjeta-vehiculo { background: white; border: 1px solid var(--borde); border-radius: 10px; padding: 12px 14px; margin-bottom: 12px; }

/* --- Evidencias --- */
.galeria-evidencias { display: grid; gap: 10px; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }
.galeria-evidencias img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 8px; border: 1px solid var(--borde); }

/* --- Indicadores --- */
.tarjeta-indicador { background: white; border: 1px solid var(--borde); border-radius: 10px; padding: 16px; display: flex; flex-direction: column; gap: 4px; }
.tarjeta-indicador .valor { font-size: 1.5rem; font-weight: 700; color: var(--azul-oscuro); }
.tarjeta-indicador .etiqueta { font-size: 0.85rem; color: #556; }

@media (max-width: 480px) {
  #app-header { flex-direction: column; align-items: flex-start; }
}