/* RESET */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", sans-serif;
}

body {
  background: #f3f4f6;
  color: #333;
}

/* HEADER */
.app-header {
  background: white;
  padding: 40px 20px;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  margin-bottom: 30px;
}

.app-header h1 {
  font-size: 32px;
  margin-bottom: 8px;
}

.app-header p {
  color: #6b7280;
}

/* MAIN */
main {
  max-width: 800px;
  margin: auto;
  padding: 20px;
}

/* SECCIONES */
section {
  background: white;
  padding: 25px;
  margin-bottom: 25px;
  border-radius: 14px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.05);
}

/* TITULO FORM */
.form-section h2 {
  margin-bottom: 20px;
  font-size: 20px;
  border-bottom: 1px solid #eee;
  padding-bottom: 10px;
}

/* FORM */
form div {
  display: flex;
  flex-direction: column;
  margin-bottom: 15px;
}

label {
  font-size: 14px;
  margin-bottom: 5px;
  font-weight: 500;
}

input,
select,
textarea {
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid #ddd;
  font-size: 14px;
  transition: 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
  border-color: #6366f1;
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
  outline: none;
}

textarea {
  resize: none;
}

/* BOTON PRINCIPAL */
form button {
  background: #6366f1;
  color: white;
  padding: 12px;
  border-radius: 10px;
  border: none;
  font-weight: 500;
  cursor: pointer;
  transition: 0.25s ease;
}

form button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(99,102,241,0.3);
}

/* FILTROS */
.filters-section {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.filters-section button {
  padding: 8px 16px;
  border-radius: 20px;
  border: none;
  background: #e5e7eb;
  cursor: pointer;
  transition: 0.2s ease;
}

.filters-section button.active {
  background: #6366f1;
  color: white;
  box-shadow: 0 4px 12px rgba(99,102,241,0.3);
}

/* LISTA */
#task-list {
  list-style: none;
}

/* TAREA */
.task-item {
  padding: 18px;
  border-radius: 12px;
  margin-bottom: 15px;
  background: #f9fafb;
  border-left: 6px solid transparent;
  transition: 0.2s ease;
}

.task-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

.task-item.completed {
  opacity: 0.6;
  text-decoration: line-through;
}

/* COLORES PRIORIDAD */
.priority-baja {
  border-left: 6px solid #22c55e;
}

.priority-media {
  border-left: 6px solid #facc15;
}

.priority-alta {
  border-left: 6px solid #ef4444;
}

/* BOTONES DE TAREA */
.task-buttons {
  margin-top: 12px;
  display: flex;
  gap: 10px;
}

.task-buttons button {
  padding: 6px 12px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-size: 13px;
  transition: 0.2s ease;
}

.complete-btn {
  background: #22c55e;
  color: white;
}

.edit-btn {
  background: #facc15;
}

.delete-btn {
  background: #ef4444;
  color: white;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 20px;
  margin-top: 40px;
  color: #6b7280; 
  font-size: 14px;
  background: #f9fafb; 
  border-top: 1px solid #ddd; 
}