/* ==================== TAREAS.CSS – Planificador de Tareas ==================== */

:root {
  --color-principal: #5b4cdb;
  --tareas-bg: #eef1f8;
  --tareas-card: #ffffff;
  --tareas-text: #1a1a2e;
  --tareas-text-secondary: #8b8db1;
  --tareas-accent: var(--color-principal, #5b4cdb);
  --tareas-accent-light: color-mix(in srgb, var(--color-principal, #5b4cdb) 12%, white);
  --tareas-success: #00d084;
  --tareas-success-light: #e0f7ef;
  --tareas-danger: #ff6b6b;
  --tareas-border: #e2e5f0;
  --tareas-shadow: 0 4px 24px color-mix(in srgb, var(--color-principal, #5b4cdb) 8%, transparent);
  --tareas-shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.04);
  --tareas-radius: 24px;
  --tareas-radius-sm: 16px;
  --tareas-radius-xs: 12px;
}

/* ==================== OVERLAY ==================== */
.tareas-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: var(--tareas-bg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: tareasFadeIn 0.3s ease;
}

@keyframes tareasFadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==================== HEADER ==================== */
.tareas-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: var(--tareas-card);
  border-bottom: 1px solid var(--tareas-border);
  flex-shrink: 0;
}

.tareas-btn-volver,
.tareas-btn-config {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--tareas-text);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.tareas-btn-volver:hover,
.tareas-btn-config:hover {
  background: var(--tareas-bg);
}

.tareas-titulo {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--tareas-text);
  margin: 0;
  letter-spacing: 0.5px;
}

/* ==================== CONTENIDO ==================== */
.tareas-contenido {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
}

/* ==================== SECCIÓN HEADER ==================== */
.tareas-seccion-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.tareas-seccion-icono {
  width: 40px;
  height: 40px;
  border-radius: var(--tareas-radius-xs);
  background: var(--tareas-accent);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.tareas-seccion-nombre {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--tareas-text);
  letter-spacing: 1.5px;
  flex: 1;
}

.tareas-btn-nueva-lista {
  padding: 10px 18px;
  border-radius: 50px;
  border: none;
  background: var(--tareas-accent);
  color: white;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.tareas-btn-nueva-lista:hover {
  background: color-mix(in srgb, var(--color-principal, #5b4cdb) 85%, black);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px color-mix(in srgb, var(--color-principal, #5b4cdb) 30%, transparent);
}

/* ==================== ESTADO VACÍO ==================== */
.tareas-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 60px 20px;
}

.tareas-btn-agregar-central {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 2px dashed var(--tareas-border);
  background: transparent;
  color: var(--tareas-text-secondary);
  font-size: 2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}

.tareas-btn-agregar-central:hover {
  border-color: var(--tareas-accent);
  color: var(--tareas-accent);
  background: var(--tareas-accent-light);
  transform: scale(1.05);
}

.tareas-empty-texto {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--tareas-accent);
  letter-spacing: 2px;
}

/* ==================== LISTA DE TAREAS ==================== */
.tareas-lista {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tareas-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: var(--tareas-card);
  border-radius: var(--tareas-radius-sm);
  box-shadow: var(--tareas-shadow-sm);
  transition: all 0.2s;
  animation: tareasItemIn 0.3s ease;
}

@keyframes tareasItemIn {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

.tareas-item:hover {
  box-shadow: var(--tareas-shadow);
  transform: translateX(2px);
}

.tareas-item.completada {
  opacity: 0.6;
}

.tareas-item.completada .tareas-item-texto {
  text-decoration: line-through;
  color: var(--tareas-text-secondary);
}

/* ==================== CHECK ==================== */
.tareas-check {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--tareas-border);
  background: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s;
  color: white;
  font-size: 0.75rem;
  padding: 0;
}

.tareas-check:hover {
  border-color: var(--tareas-success);
}

.tareas-item.completada .tareas-check {
  background: var(--tareas-success);
  border-color: var(--tareas-success);
}

/* ==================== TEXTO TAREA ==================== */
.tareas-item-texto {
  flex: 1;
  font-size: 0.95rem;
  color: var(--tareas-text);
  line-height: 1.4;
  word-break: break-word;
}

/* ==================== BOTÓN BORRAR ==================== */
.tareas-item-borrar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--tareas-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all 0.2s;
  flex-shrink: 0;
}

.tareas-item:hover .tareas-item-borrar {
  opacity: 1;
}

.tareas-item-borrar:hover {
  background: #fff0f0;
  color: var(--tareas-danger);
}

/* ==================== SEPARADOR ==================== */
.tareas-separador {
  height: 1px;
  background: var(--tareas-border);
  margin: 8px 0;
}

/* ==================== FOOTER AGREGAR ==================== */
.tareas-footer-agregar {
  margin-top: 20px;
  padding-bottom: 20px;
}

.tareas-btn-agregar-otra {
  width: 100%;
  padding: 16px;
  border-radius: var(--tareas-radius-sm);
  border: 2px dashed var(--tareas-border);
  background: transparent;
  color: var(--tareas-text-secondary);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s;
  letter-spacing: 1px;
}

.tareas-btn-agregar-otra:hover {
  border-color: var(--tareas-accent);
  color: var(--tareas-accent);
  background: var(--tareas-accent-light);
}

/* ==================== FORMULARIO ==================== */
.tareas-form-card {
  background: var(--tareas-card);
  border-radius: var(--tareas-radius);
  padding: 32px;
  max-width: 500px;
  margin: 40px auto;
  box-shadow: var(--tareas-shadow);
  animation: tareasFadeIn 0.3s ease;
}

.tareas-form-titulo {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--tareas-text);
  margin-bottom: 24px;
  text-align: center;
}

.tareas-campo {
  margin-bottom: 24px;
}

.tareas-campo-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--tareas-text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.tareas-campo-input {
  width: 100%;
  padding: 16px 18px;
  border: 2px solid var(--tareas-border);
  border-radius: var(--tareas-radius-sm);
  background: var(--tareas-bg);
  font-size: 1rem;
  color: var(--tareas-text);
  outline: none;
  transition: all 0.2s;
  font-family: inherit;
}

.tareas-campo-input:focus {
  border-color: var(--tareas-accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-principal, #5b4cdb) 10%, transparent);
}

.tareas-form-botones {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.tareas-btn-cancelar {
  padding: 14px;
  border-radius: var(--tareas-radius-sm);
  border: 2px solid var(--tareas-border);
  background: white;
  color: var(--tareas-text-secondary);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s;
}

.tareas-btn-cancelar:hover {
  border-color: var(--tareas-danger);
  color: var(--tareas-danger);
  background: #fff5f5;
}

.tareas-btn-guardar {
  padding: 14px;
  border-radius: var(--tareas-radius-sm);
  border: none;
  background: var(--tareas-accent);
  color: white;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s;
  box-shadow: 0 4px 16px color-mix(in srgb, var(--color-principal, #5b4cdb) 25%, transparent);
}

.tareas-btn-guardar:hover {
  background: color-mix(in srgb, var(--color-principal, #5b4cdb) 85%, black);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px color-mix(in srgb, var(--color-principal, #5b4cdb) 35%, transparent);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 480px) {
  .tareas-header {
    padding: 12px 16px;
  }
  
  .tareas-titulo {
    font-size: 1rem;
  }
  
  .tareas-contenido {
    padding: 16px;
  }
  
  .tareas-seccion-header {
    gap: 8px;
  }
  
  .tareas-btn-nueva-lista {
    padding: 8px 14px;
    font-size: 0.75rem;
  }
  
  .tareas-item {
    padding: 14px;
  }
  
  .tareas-item-borrar {
    opacity: 1;
  }
  
  .tareas-form-card {
    margin: 20px auto;
    padding: 24px;
  }
  
  .tareas-form-botones {
    grid-template-columns: 1fr;
  }
}