/* ====== Estilos base ====== */
body {
  font-family: Arial, sans-serif;
  background: #023047;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  padding: 10px; /* margen en móviles */
}

.container {
  background: #ffb703;
  padding: 20px;
  border-radius: 8px;
  width: 100%;
  max-width: 700px; /* adaptable */
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

h1 {
  font-family: 'Courier New', Courier, monospace;
  color: #000;
  text-align: center;
  margin-bottom: 20px;
}

h3 {
  font-family: 'Courier New', Courier, monospace;
  color: #023047;
  margin-bottom: 10px;
  text-align: center;
}

/* ====== Layout principal ====== */
.content-wrapper {
  display: flex;
  gap: 20px;
  flex-wrap: wrap; /* seguridad en pantallas intermedias */
}

.controls {
  flex: 1 1 45%;
  display: flex;
  flex-direction: column;
  gap: 15px;
  min-width: 250px;
}

.tasks-panel {
  flex: 1 1 55%;
  background: #fff;
  border-radius: 8px;
  padding: 10px;
  box-shadow: inset 0 0 5px rgba(0,0,0,0.1);
  max-height: 500px;
  overflow-y: auto;
  min-width: 250px;
}

/* ====== Inputs y botones ====== */
.input-group {
  display: flex;
  gap: 10px;
}

input {
  flex: 1;
  padding: 8px;
  border-radius: 4px;
  border: 1px solid #ccc;
}

button {
  font-family: 'Courier New', Courier, monospace;
  font-weight: bold;
  padding: 8px;
  cursor: pointer;
  border: none;
  border-radius: 4px;
  background: #023047;
  color: #fff;
  transition: background 0.3s ease;
}

button:hover {
  background: #035c82;
}

/* ====== Dropdown ====== */
.custom-dropdown {
  position: relative;
  width: 100%;
}

.dropdown-btn {
  width: 100%;
  padding: 8px;
  background: #023047;
  color: #fff;
  border: none;
  border-radius: 4px;
  text-align: center;
}

.dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  width: 100%;
  background: #fff;
  border: 1px solid #ccc;
  max-height: 150px;
  overflow-y: auto;
  z-index: 10;
  padding: 5px;
  box-shadow: 0px 2px 5px rgba(0,0,0,0.2);
}

.dropdown-content label {
  display: block;
  padding: 4px;
  font-size: 14px;
  cursor: pointer;
}

.dropdown-content label:hover {
  background: #979797;
}

#addSelectedTasksBtn {
  width: 100%;
  background: #8ecae6;
  color: #000;
}

#addSelectedTasksBtn:hover {
  background: #b00000;
  color: #fff;
}

/* ====== Filtros y acciones ====== */
.filters,
.bulk-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.filters button {
  background: #023047;
  color: #fff;
}

.filters button:hover {
  background: #035c82;
}

.bulk-actions button {
  background: #8ecae6;
  color: #000;
}

.bulk-actions button:hover {
  background: #b00000;
  color: #fff;
}

/* ====== Lista de tareas ====== */
ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px;
  border-bottom: 1px solid #023047;
}

.completed {
  text-decoration: line-through;
  color: #e36414;
}

.task-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.delete-btn {
  background: red;
  color: white;
  border: none;
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
}

.delete-btn:hover {
  background: #b00000;
}

/* =====================================================
   🔹 Media Queries
   ===================================================== */

/* Pantallas muy grandes (≥1920px) */
@media (min-width: 1920px) {
  .container {
    max-width: 1200px;
    padding: 30px;
  }

  h1 {
    font-size: 2.5rem;
  }
}

/* Pantallas grandes (≥1440px) */
@media (min-width: 1440px) and (max-width: 1919px) {
  .container {
    max-width: 1000px;
  }

  .content-wrapper {
    gap: 40px;
  }
}

/* Pantallas medianas (768px – 1023px) */
@media (max-width: 1023px) and (min-width: 768px) {
  .container {
    max-width: 90%;
  }

  .controls, 
  .tasks-panel {
    flex: 1 1 50%;
  }
}

/* Pantallas pequeñas (≤767px) */
@media (max-width: 767px) {
  body {
    padding: 5px;
  }

  .container {
    padding: 15px;
  }

  .content-wrapper {
    flex-direction: column;
    gap: 15px;
  }

  .controls, 
  .tasks-panel {
    width: 100%;
  }

  .tasks-panel {
    max-height: 300px;
  }

  button,
  input,
  .dropdown-btn,
  #addSelectedTasksBtn {
    font-size: 14px;
    padding: 6px;
  }

  h1 {
    font-size: 20px;
  }

  h3 {
    font-size: 16px;
  }
}

/* Pantallas ultra pequeñas (≤350px, hasta mínimo 320px) */
@media (max-width: 350px) {
  .container {
    padding: 10px;
  }

  button,
  input,
  .dropdown-btn,
  #addSelectedTasksBtn {
    font-size: 12px;
    padding: 5px;
  }

  h1 {
    font-size: 18px;
  }

  h3 {
    font-size: 14px;
  }

  li {
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
  }
}