:root {
  --bg-primary: #150D0D;
  --bg-card: #1F1212;
  --accent-primary: #F43F5E;
  --accent-secondary: #FB7185;
  --text-primary: #FFF1F2;
  --text-soft: #FDA4AF;
  --alta: #EF4444;
  --media: #F59E0B;
  --baja: #22C55E;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  padding: 40px 20px;
}

.contenedor {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.app-header {
  text-align: center;
}

.app-header h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.app-header p {
  color: var(--text-soft);
  font-size: 1.3rem;
}

.formulario {
  background: rgba(20, 25, 41, 0.5);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(56, 189, 248, 0.15);
  border-radius: 24px;
  padding: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr; 
  gap: 16px;
}

.campo {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-soft);
  letter-spacing: 0.5px;
}

input,
select {
  width: 100%;
  padding: 10px 14px;
  background: rgba(10, 14, 26, 0.6);
  border: 1px solid rgba(56, 189, 248, 0.15);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.3s ease;
}

input:focus,
select:focus {
  border-color: var(--accent-primary);
}

input[type="date"]::-webkit-calendar-picker-indicator,
input[type="time"]::-webkit-calendar-picker-indicator {
  filter: invert(1)
}

.btn-agregar {
  grid-column: 1 / -1;
  padding: 12px;
  background: var(--accent-primary);
  color: #0A0E1A;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-agregar:hover {
  background: var(--accent-secondary);
  transform: translateY(-2px);
}


.filtros {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.filtro {
  padding: 8px 16px;
  background: rgba(20, 25, 41, 0.5);
  border: 1px solid rgba(56, 189, 248, 0.15);
  border-radius: 20px;
  color: var(--text-soft);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.3s ease;
}


.filtro.activo,
.filtro:hover {
  background: var(--accent-primary);
  color: #0A0E1A;
  border-color: var(--accent-primary);
  font-weight: 600;
}


.contador {
  display: flex;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(20, 25, 41, 0.5);
  border: 1px solid rgba(56, 189, 248, 0.15);
  border-radius: 12px;
  font-size: 0.9rem;
  color: var(--text-soft);
}

.contador strong {
  color: var(--accent-primary);
}


.lista-tareas {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tarea {
  background: rgba(20, 25, 41, 0.5);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(56, 189, 248, 0.15);
  border-radius: 16px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease;
}

.tarea:hover {
  transform: translateX(4px);
}

.tarea::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  border-radius: 16px 0 0 16px;
}

.tarea.alta::before { background: var(--alta); }
.tarea.media::before { background: var(--media); }
.tarea.baja::before { background: var(--baja); }

.tarea.completada {
  opacity: 0.5;
}

.tarea.completada .tarea-nombre {
  text-decoration: line-through;
}

.tarea-info {
  flex: 1;
}

.tarea-nombre {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.tarea-meta {
  font-size: 0.8rem;
  color: var(--text-soft);
  display: flex;
  gap: 12px;
}

.tarea-acciones {
  display: flex;
  gap: 8px;
}

.tarea .btn-accion {
  width: 34px;
  height: 34px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tarea .btn-completar {
  background: rgba(34, 197, 94, 0.15);
  color: var(--baja);
}

.tarea .btn-editar {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-primary);
}

.tarea .btn-eliminar {
  background: rgba(239, 68, 68, 0.15);
  color: var(--alta);
}

.tarea .btn-accion:hover {
  transform: scale(1.1);
  filter: brightness(1.3);
}

.btn-completar-notif {
  width: 100%;
  padding: 8px;
  margin-top: 8px;
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid var(--accent-primary);
  border-radius: 8px;
  color: var(--accent-primary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-completar-notif:hover {
  background: var(--accent-primary);
  color: #150D0D;
}

@media (max-width: 480px) {
  .formulario {
    grid-template-columns: 1fr;
  }

  .btn-agregar {
    grid-column: 1;
  }

  .tarea {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .tarea-acciones {
    width: 100%;
    justify-content: flex-end;
  }
}

.notificacion-visual {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg-card);
  border: 1px solid var(--accent-primary);
  border-radius: 16px;
  padding: 16px 20px;
  max-width: 320px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 6px;

  
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s ease;
}

.notificacion-visual.show {
  opacity: 1;
  transform: translateY(0);
}

.notificacion-titulo {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-primary);
}

.notificacion-cuerpo {
  font-size: 0.85rem;
  color: var(--text-soft);
}

.notificacion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.btn-cerrar {
  background: none;
  border: none;
  color: var(--text-soft);
  cursor: pointer;
  font-size: 1rem;
  padding: 0;
  transition: color 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-cerrar:hover {
  color: var(--accent-primary);
}

.btn-completar-notif {
  background: rgba(34, 197, 94, 0.15);
  color: var(--baja);
  border: none;
  border-radius: 8px;
  padding: 8px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.3s ease;
}